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Donaldson Company, Inc. © 1995 1
Torit® Installationand Operation Manual
FOR TORIT FILTER CARTRIDGE SYSTEM DUST COLLECTORSTorit Downflo® Models SDF–2, SDF–4, SDF–6
Includes Installation, Operation, and Service Instructions
IOM-46740-00Revision 5
WITH QUICK-CHANGEULTRA-WEB® II
FIBRA-WEB®
ULTRA-TEK®
FILTER ELEMENTS
This manual contains specific precautionary statements relative to workersafety in appropriate sections. Read this manual thoroughly and comply asdirected. It is impossible to list all of the potential hazards of dust controlequipment. It is imperative that use of the equipment be discussed with a Toritrepresentative. Personnel involved with the equipment or systems should beinstructed to conduct themselves in a safe manner.
IMPORTANT
2 Donaldson Company, Inc. © 1995
TORIT PRODUCTS is the leading designer andmanufacturer of dust collector systems for thecontrol of industrial air pollution. Its systems aredesigned to help reduce occupational hazards,lengthen machine life, reduce in-plant maintenancerequirements, and improve product quality.
CAUTIONApplication of Dust Control Equipment:
• Special care must be exercised in the use ofdust collection equipment when combustibleequipment, such as buffing lint paper, wooddust, aluminum, and magnesium are present.These materials may present a fire orexplosion hazard. A prudent user of Toritequipment should consult and must complywith all National and Local Fire Codes and/or other appropriate codes when determiningthe location and operation of dust collectionequipment.
• Under no conditions should anyone, includingthe machine operator, be allowed to putburning objects or lit cigarettes into the hoodor ducting of any dust control system.
• Avoid mixing combustible materials withdust generated from grinding of ferrousmetals due to the potential fire hazard causedby sparks being pulled into the dust collectionequipment.
• When collection equipment is used to collectflammable or explosive dusts, the dust
collection equipment should be locatedoutside the building. Also, an installer offire extinguishing equipment, familiar withthis type of fire hazard and local fire codes,should be consulted for recommendationsand installation of the proper fireextinguishing equipment. Torit equipmentdoes NOT contain fire extinguishingequipment.
• Explosion relief vents are required on someapplications. Consult with an insuranceunderwriter or a NFPA Manual todetermine proper vent sizing requirements.Vents installed on dust collection equipmentwithin a building must relieve to the outsideof the building to minimize chances of asecondary explosion. Consult the properauthority to determine proper method ofventing the dust collection equipment. Toritequipment does NOT contain explosionrelief vents, except on special order.
• To insure optimum collector performance,always use Torit-Built® replacementfilters.
NOTE CAUTION
Statements indicate precautions necessaryto avoid potential equipment failure. Statements indicate potential safety hazards.
Donaldson Company, Inc. © 1995 3
Customer Name
Address
Shipping Date Installation Date
Model Number Serial Number
Filter Medium
Accessories
Other
Data Sheet
Table of Contents2.6 Electrical Installation ............. 20-23,29-302.6.1 Electrical Operation ............................ 302.6.2 Checker™ Board, Diagnostics and
Control Panel Specifications ............... 302.6.3 Solid State Control Timer
Specifications ................................... 30-312.6.4 Magnehelic®* Gage ............................ 312.6.5 Torit ∆P Control .............................. 33-352.6.6 Photohelic®* Gage .............................. 372.7 Compressed Air Supply Installation.... 382.7.1 Air Manifold Assembly ....................... 392.7.2 Blower Compartment ......................... 392.7.3 Dust Storage Compartment ................ 394.0 Start-up ............................................... 395.0 Operating Adjustment ........................ 405.1 Checker Board .................................... 405.2 Solid State Control Timer ................... 405.3 ∆P Control Calibration ....................... 415.4 Outlet Damper Adjustment ................. 415.5 Operating Checks ............................... 416.0 Service ................................................ 426.1 Filter Element Removal ...................... 426.2 Filter Element Installation ................... 426.3 Bag-Out Filter Element Removal ..... 42-436.4 Dust Removal Dust Container ........ 43-446.4.1 Dust Removal—Hopper Model .......... 446.5 Compressed Air Components ............. 456.6 Electrical Service ................................ 457.0 Troubleshooting Guide .................... 46-52
Parts Ordering Information ................ 54Warranty ............................................ 54
Notes and Cautions ............................. 2Data Sheet ........................................... 3Figures ................................................. 4
1.0 Introduction ......................................... 61.1 Operational Explanation ..................... 61.1.1 Normal Operation ............................... 61.1.2 Filter Cleaning ..................................... 72.0 Installation ........................................... 72.1 Inspection ............................................. 72.2 Ship Loose Items .................................. 72.3 Equipment/Tools Required ................... 72.4 Assembly of Standard Equipment ........ 72.5 Assembly of Optional Equipment ........ 82.5.1 Compressed Air Inlet Adapter ............. 82.5.2 Leg Levelers ......................................... 82.5.3 Inlet Collar ........................................... 82.5.4 Adapter to Round Outlet ..................... 82.5.5 Adapter Auto-Lok™/Ultra-Lok™ ....... 82.5.6 Adapter HEPA/Activated Carbon ...... 122.5.7 Leg Pack SDF ..................................... 122.5.8 55-Gallon Drum Pack ......................... 142.5.9 5-Gallon Pail Pack .............................. 142.5.10Bin Vent Base Pack ............................. 142.5.11Flex-Trunk™ Assembly
7-Foot/10-Foot SDF ............................ 162.5.12Weather Hood Pack ........................... 162.5.13Explosion Vent Pack ........................... 162.5.14Explosion Vent Cabinet ...................... 20
* Magnehelic and Photohelic are registered trademarksof Dwyer® Instruments, Inc..
4 Donaldson Company, Inc. © 1995
FiguresFigure 1 – SDF-4 Phantom View.............. 5Figure 2 – Operational Schematic ............ 6Figure 3 – Compressed Air Inlet Adapter 8Figure 4 – Leg Levelers ............................ 8Figure 5 – Inlet Collar .............................. 9Figure 6 – Adapter Pack to
Round Outlet .......................... 9Figure 7 – Adapter Pack
Auto-Lok/Ultra Lok ................ 10Figure 8 – Adapter Pack HEPA/
Activated Carbon.................... 11Figure 9 – Leg Pack SDF .......................... 12Figure 10 – 55-Gallon Drum Pack &
5-Gallon Pail Pack................... 13Figure 11 – Bin Vent Base Pack ................. 14Figure 12 – Flex-Trunk Assembly
7-Foot/10-Foot SDF................. 15Figure 13 – Weatherhood Pack .................. 17Figure 14 – Explosion Vent Pack ............... 18Figure 15 – SDF-4 with Explosion Vents—
Phantom View......................... 19Figure 16 – Prewired with Checker Board
on Unit .................................... 21Figure 17 – Unwired with Checker Board
on Unit .................................... 21Figure 18 – Prewired with Checker Board
in Remote Enclosure ............... 22Figure 19 – Unwired with Checker Board
in Remote Enclosure ............... 23Figure 20 – Wiring Diagram 575V 60Hz
3PH 3, 5, 7-1/2, 10 hp ............ 24Figure 21 – Wiring Diagram 380V 50Hz
3PH 3, 5 hp ............................. 24Figure 22 – Wiring Diagram 380V 50Hz
3PH 7-1/2 hp ........................... 25Figure 23 – Wiring Diagram 230V 60Hz
3PH 3, 5, 7-1/2, 10 hp ............ 25Figure 24 – Wiring Diagram 200V 50/60Hz
3PH 3, 5 hp ............................. 26Figure 25 – Wiring Diagram 200V
50/60Hz 3PH 7-1/2, 10 hp ...... 26
Figure 26 – Wiring Diagram 460V 60Hz3PH 3, 5, 7-1/2, 10 hp ............. 27
Figure 27 – Wiring Diagram 208 V60Hz 3PH 3, 5, 7-1/2, 10 hp ... 27
Figure 28 – Remote Checker BoardAssembly ................................. 28
Figure 29 – SDF Solid-State Timer WiringDiagram .................................. 29
Figure 30 – Magnehelic Gage .................... 32Figure 31 – Remote-Mounted Magnehelic
Gage ....................................... 32Figure 32 – ∆P Control Display ................. 33Figure 33 – Printed Circuit Board .............. 35Figure 34 – Photohelic Gage ...................... 36Figure 35 – Remote-Mounted Photohelic
Gage ....................................... 36Figure 36 – Photohelic Gage
Wiring Diagram ...................... 37Figure 37 – Air Manifold Assembly ........... 38Figure 38 – Bag-Out Assembly .................. 43Figure 39 – Bag-Out Filter Removal .......... 43Figure 40 – Dust Container Support
System ..................................... 44Figure 41 – Typical Electrical
Component Assembly ............. 45
Donaldson Company, Inc. © 1995 5
Figure 1SDF–4 Phantom View
Lifting Eyes
Outlet with Damper
Filter Yoke
Filter Element
Filter WingNut
Legs or Casters
Hinged Accessto ElectricalCompartment
Blower Pack
Screwed-on RearAccess Panel to
Blower Compartment
Air ManifoldAssembly
Screwed-onRear Access
Panel to CleanAir Manifold
Inlet Collar
Venturi
Lift Assembly DustContainer
T–HandleQuick Latch
Hinged AccessDoor to Dust
Container
Tool OperatedFastener
Compressed Air Inlet—1/2 National Pipe
Threads or British PipeThreads
Dust Container
Checker™ BoardDiagnostic andControl Panel
Sprinkler Taps (not shown) (not supplied standard with the SDF)
6 Donaldson Company, Inc. © 1995
1.1 Operational Explanation(See Figure 2 Operational Schematic)
1.1.1 Normal Operation
During normal operation, contaminated airenters through the top inlet area and passesdown and through the filter elements. Dust iscollected on the outside surface of the filterelements. The clean, filtered air flows throughthe center of the filter elements and into theclean air plenum, where it exits through theclean air outlet.
1.0 Introduction
The Torit® Downflo® model SDF dust collectoris used for the collection of airborne dust andparticulate. The model SDF collector provideshighly efficient, continuous, on-line dustcollection.
The Torit-Built® filter elements are the heart ofthe model SDF dust collector. These filterelements help ensure that clean air is returned tothe plant environment.
Technical and field support are always availablefrom your local Torit representative anddistributors.
Normal Operation Filter Element Purge
Figure 2Operational Schematic
Dirty Air Inlet Clean Air Outlet
Dirty Air Plenum
Deflector
FilterElements
Filter Section
Dirty Air Inlet
Clean AirPlenum
Fan Outlet
SilencerSection
Blower Pack
CompressedAir Inlet Fitting
(Purge Air)
CompressedAir Manifold
DiaphragmCleaning Air
Valve
Donaldson Company, Inc. © 1995 7
1.1.2 Filter Cleaning
Filter elements are cleaned automatically andsequentially. The result is that only one filtercartridge will be off-line for cleaning at anygiven time.
During the filter element cleaning purge, asolenoid valve is energized, causing thecorresponding diaphragm valve to send a pulseof compressed air through the filter element(from the inside outward), removing thecollected dust from the outside surfaces of thefilter element. The dust falls into the dust storagecontainer.
2.0 Installation
2.1 Inspection
The Downflo SDF is normally shipped bycommon carrier and should be checked fordamage that may have occurred en route. Anydamage should be noted and the carrier notifiedimmediately.
2.2 Ship Loose Items
Items shipped loose with the dust collector mayinclude:
• Bag-out Assembly• Inlet Collar• Compressed Air Inlet Adapter• (4) Leveling Mount Foot Pads• (4) Metric Hex Bolts• Hopper• Legs and Crossbracing• Outlet Adapters• Auto-Lok/Ultra-Lok/HEPA/Carbon Filter• Remote Checker Board/
Magnehelic Gage/Photohelic Gage• Slide Gate/55-Gallon Drum Cover Pack• 5-Gallon Pail Pack• Flex-Trunk Assembly• Weather Hood• Explosion Vents
Most cabinets are shipped completely assembledwith the filter cartridges installed.
2.3 Equipment/Tools Required
The following is a list of typical tools andequipment required to install and assemble aDownflo SDF unit.
• Crane/Lift Truck• Pipe Wrenches• Socket Wrenches• Pipe Sealant
2.4 Assembly of Standard Equipment
Remove all crating and strapping from the unit.Remove all miscellaneous parts (bolts, nuts, etc.)before lifting the unit off of the truck. Check theparts received against the packing list. If thereare parts missing, the carrier and your localTorit representative should be notifiedimmediately.
• Connect lifting slings to the four liftlugs on top of the dust collector whenusing a crane to unload the unit.
• Insert the fork under the dustcollector between the casters or legswhen using a forklift truck to unloadthe unit.
NOTEA crane or forklift truck is recommendedfor the unloading of the dust collector.
CAUTION
NOTEIf the lift lugs are removed, they must bereplaced with the four (4) metric hexbolts (provided) before the dust collectoris operated.
8 Donaldson Company, Inc. © 1995
Figure 3Compressed Air Inlet Adapter
Compressed Air Inlet
Compressed AirInlet Adapter
Collector
Leg or Caster
Sealant
Figure 4Leg Levelers
LevelingMount Foot
Pad
CollectorLeg
2.5 Assembly of Optional Equipment
2.5.1 Compressed Air Inlet Adapter(See Figure 3 Compressed Air InletAdapter)
The compressed air inlet adapter is used forconverting the compressed air inlet fromNational Pipe Threads to British Pipe Threads.Install the compressed air inlet adapter as shownin Figure 3 Compressed Air Inlet Adapter. Usethread-sealing tape or pipe sealant on thethreaded adapter before screwing it into thecompressed air inlet.
2.5.2 Leg Levelers (See Figure 4 Leg Levelers)
The leveling mount foot pads screw into thebottom of the collector legs as illustrated inFigure 4 Leg Levelers.
2.5.3 Inlet Collar (See Figure 5 Inlet Collar)
Place 1/4" diameter sealant between the cabinetside or top and the inlet collar. Attach the collarusing the eight (8) #6-32 thread cutting screwsprovided.
2.5.4 Adapter to Round Outlet (See Figure 6Adapter Pack to Round Outlet)
Place the 3/16" x 1/2" rubber seal between thecabinet top and the outlet adapter. Attach theoutlet adapter to the cabinet using the clamphook, wing nut, and washer as shown. Thesliding damper will still operate with thisadapter.
2.5.5 Adapter Auto-Lok / Ultra-Lok (See Figure 7 Adapter Pack
Auto-Lok / Ultra-Lok )
Remove the lift lug on the cabinet top andreplace it with the set screw. Place the 3/16" x1-1/4" gasket between the cabinet top and theadapter. Attach the adapter to the cabinet topusing the clamp hooks, wing nuts, and washersas shown. Place the 3/8" x 1-1/4" gasketbetween the adapter and the Auto-Lok or Ultra-Lok filter as shown. Use the 10-24 x 7/16 screwsto attach the filter to the adapter. The slidingdamper will not operate with these adapters.
Donaldson Company, Inc. © 1995 9
Wing Nut3/8 Flat Washer
Outlet Adapter
Rubber Seal
Cabinet Top(Ref)
Clamp Hook
Figure 6Adapter Pack to Round Outlet
Cabinet Top or Side1/4" Diameter Sealant
#6-32 Screws Inlet Collar
Figure 5Inlet Collar
10 Donaldson Company, Inc. © 1995
Figure 7Adapter Pack Auto-Lok / Ultra-Lok
Auto-Lok /Ultra-LokAssembly
Cabinet Top (Ref)
Adapter
3/16 x 1-1/4 Gasket
3/8 x 1-1/4 Gasket
10-24 x 7/16 Screw
Wing Nut
3/8 Flat Washer
Set Screw
Clamp Hook
Donaldson Company, Inc. © 1995 11
Figure 8Adapter Pack HEPA / Activated Carbon
Cabinet Top (Ref)
Adapter
3/16 x 1-1/4 Gasket
Filter Retainer Bar
1/4-20 x 3/4 Bolt
1/4 Flat Washer
1/4 x 3/4Gasket
3/8 Flat Washer
Set Screw
Wing Nut
HEPA /Carbon Filter
Clamp Hook
12 Donaldson Company, Inc. © 1995
Figure 9Leg Pack SDF
SDF Base
Crossbrace
Washer
Bolt
Crossbracing
Washer
Bolt
WasherNut
WasherBolt
Washer
Nut
Leg
Crossbrace
Washer
Nut
2.5.6 Adapter HEPA / Activated Carbon(See Figure 8 Adapter Pack HEPA /Activated Carbon)
Remove the lift lug on the cabinet top andreplace it with the set screw. Place the 3/16" x1-1/4" gasket between the cabinet top and theadapter. Attach the adapter to the cabinet usingthe clamp hooks, wing nuts, and washers asshown. Place the 1/4" x 3/4" gasket between theadapter and the HEPA or Activated Carbonfilter as shown. Use the filter retainer bar andthe 1/4" bolts and washers to attach the filter tothe adapter. The sliding damper will not operatewith these adapters.
2.5.7 Leg Pack SDF(See Figure 9 Leg Pack SDF)
The SDF units that are not furnished with a dustcontainer will have an internal hopper with abase to attach to legs and crossbracing.Assemble the legs and crossbracing to the SDFbase as shown in Figure 9 Leg Pack SDF. The55-gallon drum pack leg crossbraces should beinstalled on the three sides only, in order toallow access to the drum. The 5-gallon pail packdoes not require crossbracing.
Donaldson Company, Inc. © 1995 13
Figure 1055-Gallon Drum Pack and 5-Gallon Pail Pack
Attach to SDF Base as Shown
5-Gallon Pail PackWith or Without Gate
55-Gallon Drum PackWith or Without Gate
With or Without Latches
SDF Base
1/4" Dia. Seal
Bolts, Washers,& Nuts
14 Donaldson Company, Inc. © 1995
Bin Vent Base
1/2" Diameter Holes (28)
Figure 11Bin Vent Base Pack
2.5.8 55-Gallon Drum Pack(See Figure 10 55-Gallon Drum Packand 5-Gallon Pail Pack)
The 55-gallon drum cover and the 55-gallondrum cover with gate can be attached to thebase as shown in Figure 10 55-Gallon DrumPack and 5-Gallon Pail Pack. Use the existingbolts, washers, and nuts that are on the base.Access to the bolts is through the hinged door.Be sure to use sealant to seal between the drumcover and the base.
2.5.9 5-Gallon Pail Pack(See Figure 10 55-Gallon Drum Packand 5-Gallon Pail Pack)
Attach the 5-gallon pail cover and the 5-gallonpail cover with gate as shown in Figure 1055-Gallon Drum Pack and 5-Gallon Pail Pack.
2.5.10 Bin Vent Base Pack(See Figure 11 Bin Vent Base Pack)
The Bin Vent pack for the SDF consists of abase, as shown in Figure 11 Bin Vent Base Pack.The Bin Vent base has twenty-eight (28) 1/2"diameter holes for attachment in the field.
Donaldson Company, Inc. © 1995 15
Figure 12Flex-Trunk Assembly 7-Foot/10-Foot SDF
M-6 Thread CuttingBolts (12 Req'd)
M-6 Hex Bolts(8 Req'd)
Detail A
1/4" DiameterSealant
Flex-TrunkAdapter
Use the bolts that areremoved from the cover
plate in Detail A
See Detail A
Flex-Trunk Assembly(7-Foot Shown)
Swivel Base
5/16 Screw5/16 Washer
Cover Plate
~
1/4" DiameterSealant
16 Donaldson Company, Inc. © 1995
2.5.11 Flex-Trunk Assembly 7 Ft/10 Ft(See Figure 12 Flex-Trunk Assembly)
Remove the cover plate bolts and the coverplate from either the right or left side of the SDFcabinet. Using the same cover plate bolts, attachthe Flex-Trunk Adapter to the side of the SDFcabinet. Be sure to place 1/4" diameter sealantbetween the adapter and the cabinet, as shownin Figure 12 Flex-Trunk Assembly. Next, attachthe Flex-Trunk assembly to the adapter, beingsure to install more 1/4" sealant between theadapter and the Flex-Trunk assembly. With theswivel base positioned as shown in Figure 12Flex-Trunk Assembly, secure the Flex-Trunk tothe adapter using the four (4) 5/16 slottedscrews and lock washers. For the adjustmentand operation of the Flex-Trunk, see theInstallation and Operation Manual for the Flex-Trunk IOM-40779-00.
2.5.12 Weatherhood Pack (See Figure 13 Weatherhood Pack)
Remove the bolts and the rear access panel tothe SDF. If the SDF is equipped with an outletdamper (see Figure 1 SDF-4 Phantom View), thisdamper must be removed. The weather hoodcannot be used with the outlet damper. Also,remove the lift lug from the corner of the cabinetand replace it with the M-16 set screw provided.Place 1/4" diameter sealant between the cabinettop and the weatherhood. Position theweatherhood over the cabinet outlet, as shownin Figure 13 Weatherhood Pack, and attach theweather hood to the cabinet using the four M-6bolts provided. These bolts should be insertedthrough the slots on the cabinet roof andscrewed into the weld nuts on the weatherhood.Replace the rear access panel and bolts.
2.5.13 Explosion Vent Cabinet (See Figure 15SDF-4 with Explosion Vents—PhantomView)
When explosion vents are furnished on an SDF,a special cabinet is required (see Figure 15 SDF-4 with Explosion Vents—Phantom View). Somefeatures on this cabinet include:
• A hinged access door to the dust containerwith threaded handles and a reinforcingbar.
• Two 1/8" NPT couplings for dirty air (highpressure) and clean air (low pressure)fittings.
• Two 3/4" NPT couplings for electricalconnections.
• Openings for two 12 x 12 explosion vents.
Options available with this SDF cabinet inaddition to the 12 x 12 explosion vents include:
• Explosion-Proof Motors.
• Aluminum Blower Wheels.
• NEMA 9 Explosion-Proof SolenoidEnclosures.
• Checker board in remote enclosure withunwired electrical only.
NOTE• Explosion vent SDF units do not
contain an electrical compartment.They are furnished from Toritunwired.
• All electrical work must be done by aqualified electrician according to localcodes.
Donaldson Company, Inc. © 1995 17
Figure 13Weatherhood Pack
Weatherhood
1/4" Dia Sealant
Cabinet Shown withRear Access Panel
Removed
M-6 Bolt
Replace Lift Lugwith Set Screw
18 Donaldson Company, Inc. © 1995
Figure 14Explosion Vent Pack
Cabinet (Ref)
SiliconeSealant
12 x 12Weather Cover
1/4" Wide TabUse the bolts that are removed from thecover plate in Detail A.Tighten bolts only until vent flangebegins to deform. Do not overtighten.
Hex Bolt
12 x 12 Explosion Vent
Lock Washer
Hex Nut
12 x 12Explosion Vent
Detail A
Remove cover plate.
Remove all bolts on cover plate andsave the bolts for attaching theexplosion vents to the cabinet.
See Detail A
Donaldson Company, Inc. © 1995 19
Figure 15SDF-4 with Explosion Vents Phantom View
Outlet with Damper
Filter Yoke
Filter Wing Nut
Inlet Collar
Hinged AccessDoor to Dust
Container
Lift Assembly Dust Container
Legs
Compressed Air Inlet—1/2 National Pipe
Threads or British PipeThreads
Dust Container
Blower Pack
Screwed-on RearAccess Panel to
Blower Compartment
Lifting Eyes
Opening forExplosion Vents
1/8 NPT Coupling(High Pressure)
1/8 NPT Coupling(Low Pressure)
3/4" NPTCouplings for
ElectricalConnections
Air ManifoldAssembly
Screwed-onRear Access
Panel to CleanAir Manifold
Filter Element
Venturi
Sprinkler Taps (not shown) (not supplied standard with the SDF)
20 Donaldson Company, Inc. © 1995
2.5.13 Explosion Vent Pack(See Figure 14 Explosion Vent Pack)
Remove the cover plate bolts and the cover platefrom the side of the SDF cabinet. Using the samecover plate bolts, attach the 12 x 12 explosionvents to the side of the SDF cabinet. Be sure toapply silicone sealant between the bolted flangesand the cabinet, as shown in Figure 14 ExplosionVent Pack. Tighten the bolts only until the ventframe flange starts to bend. Do not overtighten.
The 12 x 12 weather cover should be used foroutside applications. Apply silicone sealant onlyalong the bolted flange of the weather cover.Attach the weather cover to the explosion ventflange using bolts, lock washers and nuts asshown. Also bend the 1.4 inch wide tab 180degrees over and press firmly against theexplosion vent frame. Do this on both sides ofthe weather cover.
For operating precautions, technical data andrearming instructions for the explosion vents, seethe Torit Explosion Vent ManualIOM-72087-01.
2.6 Electrical Installation
The Downsized Downflo dust collector isavailable with four versions of electricalcomponents:
1. Pre-wired with the Checker board on theunit (see Figure 16 Pre-Wired with CheckerBoard on Unit)
2. Unwired with the Checker board on theunit (see Figure 17 Unwired with CheckerBoard on Unit)
3. Pre-wired with the Checker board in aremote enclosure (see Figure 18 Pre-Wiredwith Checker Board in Remote Enclosure)
4. Unwired with the Checker board in aremote enclosure (see Figure 19 Unwiredwith Checker Board in Remote Enclosure).
The pre-wired version with the Checker boardon the unit has been completely wired at thefactory. Before it is ready for operation, a plugmust be attached to the power cord and the unitmust be connected to a duct.
The unwired version with the Checker board onthe unit has only the solenoid valves and thetemperature sensor wired at the factory.A proper-sized motor starter needs to bemounted externally or in the electricalcompartment. A proper-sized power cord andplug also needs to be installed. Using the wiringdiagrams (Figures 20 through 27) make theproper connections to the blower motor, blowermotor starter, and the Checker board.All electrical apparatus should be properly sizedfor the required voltage and motor full loadamperage.
NOTE• All electrical work must be done by a
qualified electrician according to localcodes.
• The plug attached to the power cordmust be for the correct voltage asdesignated.
CAUTION• Explosion relief vents are required on
some applications.
• Consult with an insurance underwriteror a NFPA Manual to determine propervent sizing requirements.
• Vents installed on dust collectionequipment within a building must relieveto the outside of the building tominimize chances of a secondaryexplosion.
• Consult the proper authority todetermine proper method of venting thedust collection equipment.
• Torit equipment does NOT containexplosion relief vents, except on specialorder.
CAUTION
Remote controls are required for unitshandling combustible or explosive dusts.
Donaldson Company, Inc. © 1995 21
Figure 16Prewired with Checker Board on Unit
Power Cord
To Low Pressure
To High PressureVinyl Tubing
Vinyl TubingSafety Filters
Checkerboard
Door Shown inOpen Position
Figure 17Unwired with Checker Board on Unit
Safety FiltersVinyl Tubing Access for Wiring
to MotorMounting Panel for
Motor Starter
Access forPower Cord
To Low Pressure
To High Pressure
Wiring toSolenoid Valves
Wiring toTemperature Sensors
Door Shown inOpen Position
Checker board
22 Donaldson Company, Inc. © 1995
Figure 18Prewired with Checker Board in Remote Enclosure
Power Cord
Terminal Strip MountingPanel
Ground Lug
Factory WiredMotor Starter
Door Shown inOpen Position
High PressureFitting
Low Pressure FittingFuse Kits andTransformer
The pre-wired version with the Checker boardin the remote enclosure should be installedaccording to the following steps.
1. Mount the Checker board enclosure in alocation convenient for the machineoperator (see Figure 28 Remote CheckerBoard Assembly).
2. Install conduit between the electricalcompartment and the remote enclosure. Usesealed fittings, making all connections leaktight.
3. Wire from the terminal strip in the electricalcompartment to the terminal strip in theremote enclosure (see Wiring DiagramsFigures 20 through 27).
4. Drill mounting holes in the electricalcompartment to accept the bulkheadpneumatic fittings shipped with thecollector. Install them on the mostconvenient side of the collector, typicallyadjacent to the conduit. Connect the 1/8"ID vinyl tubing from the pressure taps insidethe electrical compartment to the bulkheadfittings, and then from the bulkhead fittingsto the mating fittings on the Checker boardenclosure. Loosely fasten the vinyl tubing tothe conduit for support, being careful not toflatten the tubing.
5. The pneumatic fitting located on the verticalsurface of the electrical compartment is thelow pressure fitting, and the fitting on thehorizontal surface is the high pressurefitting. The Checker board enclosure has thelow pressure fitting closest to the front coverand the high pressure fitting located closestto the back of the enclosure.
Donaldson Company, Inc. © 1995 23
The unwired version with the Checker board inthe remote enclosure should be installedaccording to the following additionalinstructions.
1. Remove the back panel to access the blowermotor (see Figure 1 SDF-4 Phantom View).
2. Install and wire the motor starter, controlcircuit transformer, and other motor controlcomponents as required (see Figure 19Unwired with Checker Board in RemoteEnclosure).
3. Wire the motor to the motor starter usingthe factory installed conduit between themotor connection box and the electricalcompartment.
NOTE• Explosion vent SDF collectors do not
contain an electrical compartment orinternal conduit for wiring.
• Two 3/4" couplings are provided onthe outside of the collector forelectrical wiring access (see Figure 15SDF-4 with Explosion Vents PhantomView).
• All wiring on these units must be doneby a qualified electrician according tolocal codes.
Figure 19Unwired with Checker Board in Remote Enclosure
Access for Wiringto Motor
Wiring toTemperature Sensor
Terminal Strip
MountingPanel forMotor Starter(By others)
High PressureFitting
Door Shown inOpen Position
Low Pressure Fitting
Wiring to SolenoidValves
24 Donaldson Company, Inc. © 1995
Figure 21Wiring Diagram 380 Volt - 50 Hz, 3PH – 3, 5 hp
From 575VAC 60Hz, 3 PhaseDisconnect means and circuit protection by others
MOTOR STARTER
NOTE: From CUR 3 wrap wire lead 1 turn (2 turns for 3,5 hp) through sensor
core CUR 1 before returning to CUR 3.
NOTE: From CUR 3 wrap wire lead 1 turnthrough sensor core CUR 1 beforereturning to CUR 3.
Figure 20Wiring Diagram 575 Volt - 60 Hz, 3PH – 3, 5, 7-1/2, 10 hp
From 380VAC 50Hz, 3 PhaseDisconnect means and circuit protection by others
L1 L2 L3
BLOWER3,5,7-1/2,10 hp
CONTROL BOARD
IN OU
T
IN OU
T
N1 2
HO
T
NE
UT
G
FU11A H3
H4
H2
H1 X3
X1
X2
FU33-2/10A
115VAC
NT1
250VA1AFU2
L1 L2 L3
M1
OL1
T1 T2 T3
IT3 N1 4 5
CL
EA
N A
IR T
EM
PER
A-
TU
RE
ON
/OFF
TE
MP
1
TE1
T3 IT3
CU
R 1
2
INT
ER
FAC
EB
OA
RD
RELAY1
M1 OL176A1 A2 95 96
RELAY2
RELAY 3
RELAY 4
RELAY5
RELAY 6
9
8
10
11
12
13
SV1
SV2
SV3
SV4
SV5
SV6
CLEANINGVALVE NO. 1
CLEANINGVALVE NO. 2
CLEANINGVALVE NO. 3
CLEANINGVALVE NO. 4
CLEANINGVALVE NO. 5
CLEANINGVALVE NO. 6
RELAY 7
TB7
TB8
TB9
TB6
TB10
TB11
TB12
TB
1
TB
1A
TB
4
TB
2
CU
R 3
G L2 L3L1
FU11.5A
L1 L2 L3
M1
IT3
T1 T3T2
OL1
BLOWER3,5 hp
(V1) (W1)(U1)
FU2
N
PSI
+24VDCLINE-24VDC
3A
NEUTRAL
GND
+DC-DC
HO
T
IN OU
T
OU
TIN
TB
1
TB
1A
TB
2
ON
/OFF
TB
4
4
CONTROL BOARD
NE
UT
TE1
T3C
UR
1
5N1 23.75KW
IT3
TE
MP
1
CU
R 3
TB6
RELAY1
2
RELAY2
6 OL1
A1 A29695
8
MOTOR STARTER
7 M1
RELAY 3
RELAY 4
RELAY5
RELAY 6
RELAY 7
TB9
TB8
TB12
TB11
TB10
TB7
13
12
11
10
9
SV1
SV2
SV3
SV4
SV5
SV6CLEANINGVALVE NO. 6
CLEANINGVALVE NO. 4
CLEANINGVALVE NO. 3
CLEANINGVALVE NO. 5
CLEANINGVALVE NO. 2
CLEANINGVALVE NO. 1
L1N1
24VDC PowerSupply
N1 CL
EA
N A
IR T
EM
PER
A-
TU
RE
INT
ERFA
CE
BOA
RD
Donaldson Company, Inc. © 1995 25
NOTE: From CUR 3 wrap wire lead 1 turnthrough sensor core CUR 1 beforereturning to CUR 3.
From 380VAC 50Hz, 3 PhaseDisconnect means and circuitprotection by others
NOTE: From CUR 3 wrap wire lead 1 turnthrough sensor core CUR 1 beforereturning to CUR 3.
Figure 23Wiring Diagram 230 Volt - 60 Hz, 3PH – 3, 5, 7-1/2 , 10 hp
Figure 22Wiring Diagram 380 Volt - 50 Hz, 3PH – 7-1/2 hp
From 230VAC 60Hz, 3 PhaseDisconnect means and circuit protection by others
MOTOR STARTER
L2 L3L1 NGFU11.5A
M1
5.5KW
BLOWER7-1/2 hp
OL1
(V1) (W1)(U1)T1 T3T2
L1 L2 L3
M3T3 L3
T2
T1
L2
L1
T5
T4
T6
(V2)
(W2)
(U2)
19
INT
B1
IL1
HO
TO
UT
TB
1A
INN
EU
TO
UT
N
TB
2
ON
/OFF
TB
4T
EM
P 1
4
TE1
2
CU
R 3
5
CU
R 1
INT
ERFA
CE
BOA
RD
L3 IL3
CONTROLBOARD
RELAY1
TB6PSI
L1N1
24VDC PowerSupply
+DCLINE -24VDC
FU2
NEUTRAL
GND
-DC
CLEANINGVALVE NO.6
CLEANINGVALVE NO.4
CLEANINGVALVE NO.3
CLEANINGVALVE NO.5
SV6TB1213
12
11
10
9
RELAY 7
SV5
SV4
SV3
SV2
SV1
CLEANINGVALVE NO.2
CLEANINGVALVENO. 1
TB8
TB9
TB11
TB10
TB7
RELAY5
RELAY 4
RELAY 3
RELAY 6
RELAY2
N1
N1
M5
M3
M1
TR1
695 96
OL1
M1
M3 A1
A1
A1
8 A1 A2
A2TR1
A2
A2
7 8 915
15 21
13 14
5453
18 21 22
16 22
CL
EA
N A
IRT
EM
PE
RA
TU
RE
DELTACONTACTOR
MAINCONTACTOR
WYECONTACTOR
TIME DELAYONENERGIZE
3A+24VDC
L3 L2 L1
T3T1 T2M5
T1 T3T2
Y- STARTER
IT3
T1 T2
OL1
T3
L3L2
BLOWER3,5,7-1/2,10 hp
L1 G
L1 L2
M1
L3
H3
H4 X1
X2
3AFU1
250VAT1
H1
H2 115VAC
X3 N
CONTROL BOARD
TB
1
HO
T
IN OU
T
1
TB
1A
IN
2 N N1
OU
TN
EU
T
TB
2
ON
/OFF
CL
EA
N A
IR T
EM
PER
A-
TU
RE
TB
4
TE
MP
1
5
TE1
4
CU
R 1
CU
R 3
T3
IT3
INT
ER
FAC
EB
OA
RD
2
13
TB1212
11
RELAY 3TB9
TB10
TB8
10
9
8
TB7
TB11
RELAY1
TB6
CLEANINGVALVE NO. 6
CLEANINGVALVE NO. 5
CLEANINGVALVE NO. 4
CLEANINGVALVE NO. 3
CLEANINGVALVE NO. 2
CLEANINGVALVE NO. 1
OL1M1 79695A2A1
RELAY5
RELAY 6
RELAY 7
6
SV6
SV5
SV4
SV3
SV2
SV1RELAY2
RELAY 4
3AFU2
3-2/10AFU3
26 Donaldson Company, Inc. © 1995
NOTE: From CUR 3 wrap wire lead 1 turnthrough sensor core CUR 1 beforereturning to CUR 3.
From 200VAC 50/ 60Hz, 3 PhaseDisconnect means and circuit protection by others
Figure 24Wiring Diagram 200 Volt - 50/60 Hz, 3PH – 3, 5 hp
NOTE: From CUR 3 wrap wire lead 1 turnthrough sensor core CUR 1 beforereturning to CUR 3.
Figure 25Wiring Diagram 200 Volt - 50/60 Hz, 3PH – 7-1/2, 10 hp
From 200VAC 50/60Hz, 3 PhaseDisconnect means and circuit protection by others
L2L1 L3GFU13A
FU23A
L2
M1
L3L1
OL1
T2T1 T3(U1) (V1) (W1)
3.75KW
IT3T
B1
HO
T
IN OU
T
CL
EA
N A
IR T
EM
PER
A-
TU
RE
TB
1A
OU
TN
EU
T
IN
ON
/OFF
TB
2
TE
MP
1
TB
4
4
TE1
51 2 N N1
CONTROL BOARD T3 IT3
CU
R 3
CU
R 1
INT
ER
FAC
EB
OA
RD
RELAY1
TB7
TB8
RELAY2
TB6
RELAY 3TB9
RELAY 4TB10
RELAY5
TB11
RELAY 6TB12
RELAY 7 13
2
12
11
10
9
8
6A1
M1
A27
OL1
95 96
SV6
SV5
SV4
SV3
SV2
SV1
CLEANINGVALVE NO. 6
CLEANINGVALVE NO. 5
CLEANINGVALVE NO. 4
CLEANINGVALVE NO. 3
CLEANINGVALVE NO. 2
CLEANINGVALVE NO. 1
MOTOR STARTER
BLOWER3,5 hp
L3L2L1GFU1
FU23A
3A
L2L1
T1 T2
L3
T3M1
OL1T1 T2
(V1)(U1)T3
(W1)
5.5KWBLOWER
7-1/2, 10 hp
M5T1L1
L3
L2 T2
T3
(V2)T5
(U2)T4
T6 (W2)
L1 21T1M3
T2 L2
L3T3
Y– STARTER
9815
15
18
16M1
43 44
M3
M3
21 22
21
13
10
TR1 M5
14
A2A1M3M5 11
12
722 A1 A2
TR1
A1 A2M1
A1 A2
CLEANINGVALVE NO. 6
RELAY1
TB12
TB8
TB9
TB10
RELAY2
RELAY 3
RELAY 4
6
TB7
TB6
13
14
15
16
18
17TB11
RELAY5
RELAY 6
RELAY 7
SV1
SV5
SV6
SV4
SV3
SV2
CLEANINGVALVE NO. 5
CLEANINGVALVE NO. 4
CLEANINGVALVE NO. 3
CLEANINGVALVE NO. 2
CLEANINGVALVE NO. 1
INTE
RFAC
EBO
ARD
CONTROLBOARD
IN
HO
TO
UT
INN
EU
TO
UT
ON
/OFF
2
MAINCONTACTOR
TIME DELAYON ENERGIZE
96
WYECONTACTOR
DELTACONTACTOR
CL
EA
N A
IR T
EM
PER
AT
UR
E
IL1
IL2 22
TB
2
TB
1A
TB
1
TB
4
TE
MP
1
TE1
4 5
CU
R 1
CU
R 3
19
20
2
Donaldson Company, Inc. © 1995 27
NOTE: From CUR 3 wrap wire lead 1 turnthrough sensor core CUR 1 beforereturning to CUR 3.
From 460VAC 60Hz, 3 PhaseDisconnect means and circuit protection by others
Figure 27Wiring Diagram 208 Volt - 60 Hz, 3PH – 3, 5, 7-1/2, 10 hp
FFFFFigure 26Wiring Diagram 460 Volt - 60 Hz, 3PH – 3, 5, 7-1/2, 10 hp
MOTOR STARTER
From 208VAC 60Hz, 3 PhaseDisconnect means and circuit protection by others
NOTE: From CUR 3 wrap wire lead 1 turnthrough sensor core CUR 1 beforereturning to CUR 3.
L2 L3
T1
115VAC
250VA
GL1
FU1
FU21-1/2A
1-1/2A
H4
H3
H2
H1
X1
X3
X2FU3
3-2/10A
N
L2L1 L3M1
OL1T1 T2 T3
IT3
BLOWER3,5,7-1/2,10 hp
IN
1
TB
1
OL176 MOTOR STARTER
8 CLEANINGVALVE NO. 1
TB9
TB6
OU
T
TB
1A
IN
HO
T
2 N1N CL
EA
N A
IR T
EM
PER
A-
TU
RE
OU
TN
EU
T
TB
2
ON
/OFF
TE1
4 5C
UR
1
INT
ER
FAC
EB
OA
RD
TB
4T
EM
P 1
CONTROL BOARD T3 IT3
CU
R 3
2RELAY1
RELAY2
RELAY 3
RELAY 4
RELAY5
RELAY 6TB12
RELAY 7
A1
M1
A2 95 96
SV1
SV2
SV3
SV4
SV5
SV6
CLEANINGVALVE NO. 2
CLEANINGVALVE NO. 3
CLEANINGVALVE NO. 4
CLEANINGVALVE NO. 5
CLEANINGVALVE NO. 6
9
10
11
12
13
TB10
TB11
TB8
TB7
IT3
T1 T2
OL1
T3
L3L2
BLOWER3,5,7-1/2,10 hp
L1 G
L1 L2
M1
L3
H3
H4 X1
X2
3AFU1
250VAT1
H1
H2 115VAC
X3 N
CONTROL BOARD
TB
1
HO
T
IN OU
T
1
TB
1A
IN
2 N N1
OU
TN
EU
T
TB
2
ON
/OFF
CL
EA
N A
IR T
EM
PER
A-
TU
RE
TB
4
TE
MP
1
5
TE1
4
CU
R 1
CU
R 3
T3
IT3
INT
ER
FAC
EB
OA
RD
2
13
TB1212
11
RELAY 3TB9
TB10
TB8
10
9
8
TB7
TB11
RELAY1
TB6
CLEANINGVALVE NO. 6
CLEANINGVALVE NO. 5
CLEANINGVALVE NO. 4
CLEANINGVALVE NO. 3
CLEANINGVALVE NO. 2
CLEANINGVALVE NO. 1
OL1M1 79695A2A1
RELAY5
RELAY 6
RELAY 7
6
SV6
SV5
SV4
SV3
SV2
SV1RELAY2
RELAY 4
3AFU2
3-2/10AFU3
28 Donaldson Company, Inc. © 1995
Figure 28Remote Checker Board Assembly
Control Panel Label
Remote Checker boardAssembly Kit Low Pressure (Clean Air)
Control Box
Terminal Strip
Flat CableHigh Pressure (Dirty Air)
High and Low Pressure Fittings
Control Box
Cover of Control Box
Donaldson Company, Inc. © 1995 29
With the blower motor starter turned on, checkoperation of the solenoid valves. When theChecker board is used, press and hold theCONSTANT CLEAN push button and pulsingwill begin. The valves should open and closecontinuously with a factory set interval time of10 seconds between each cleaning pulse.
Figure 29SDF Solid-State Timer Wiring Diagram
POWERSUPPLY
TIMINGLOGIC
CONTROLLOGIC
CONTROL BOX
ON TIMEOFF TIME
PRESSURESWITCH
PROGRAM PINS PROGRAM LUG
SOLENOID VALVES
4FU 3AMPL1 L2
SOLCOM 1
3 42 5 6
X1 115V X2
H2
460V
ITGS
H3H1
IM
IM
STOP START
X1 115V X2
H3 H2H1
H4
H4
230V
FANI MTR
IOL
IT3
IT2
IT1IM
IL3
IL2
IL1
3FU
2FU
1FUL1
L2
L3
230V 3060N
If the model SDF is purchased with a solid statetimer in the unit instead of the Checker board,the timer will be wired to the solenoid valves.If the timer is to be remote mounted, it will befurnished unwired. A properly sized motorstarter needs to be mounted in addition to thetimer. Using the wiring diagram in Figure 29SDF Solid-State Timer Wiring Diagram, makethe proper connections to the blower motor,blower motor starter, and solid state timer.
After attaching the plug and starting the blowermotor, check for proper rotation. It should beclockwise when looking down at the top of theblower motor. Also, reference the rotationsticker on the blower housing (see Figure 1SDF-4 Phantom View). Proper blower rotation isextremely important. If the blower is running inthe wrong direction, it will only deliverapproximately 40% of its rated air volume.Interchange any two power wire leads (3 phaseonly) on the plug to reverse rotation.
CAUTION
Do not interchange a power lead andthe ground wire.
Disconnect electrical power beforeservicing any electrical component.
CAUTION
30 Donaldson Company, Inc. © 1995
2.6.2 Checker Board Diagnostics and ControlPanel Specifications
See the Installation and Operation Manual forthe Checker Board diagnostic and control panelfor complete information (IOM-72202-00)
2.6.3 Solid-State Timer Specifications(See Figure 29 SDF Solid-State TimerWiring Diagram)
COMPONENTS: Standard Downflo modelSDF dust collectors are equipped with 115volt AC solenoid valves rated at 19.7 wattseach and a solid-state 115 volt AC/50-60Hz/1timer when ordered.
The timer is factory-adjusted at 100 milliseconds(1/10 second) pulse time and a 10 secondduration (elapsed time) between pulses.
Input power to the solid-state timer is applied toL1 and L2 terminals on the timer control circuitboard, which is in parallel with the low voltage(115/60/1) coil of the blower fan magneticstarter (see Figure 29 SDF Solid-State TimerWiring Diagram). Upon fan start-up, power issupplied to the control board and the preset OFFtime is initiated. At the end of the OFF time, thecontrol board timer will energize acorresponding solenoid valve to provide the ONtime cleaning pulse for one filter element andthen step to the next filter element.
This cycle is continuous unless an auxiliarycontrol such as a Photohelic pressure switch or a1TGS toggle switch is used to control the timer(see Figure 29 SDF Solid-State Timer WiringDiagram).
When the ® is used on the Checker boarddiagnostic and control panel, or when thePhotohelic gage is used as an internal control ofthe solid-state timer, the valves will pulse onlywhen the differential pressure reaches the highset point and will continue the pulse sequenceuntil the lowest pressure setting is reached (seeFigure 1 SDF-4 Phantom View and Figure 29SDF Solid-State Timer Wiring Diagram).
2.6.1 Electrical Operation
All functions on the Downflo model SDF arecontrolled from the Checker board diagnosticand control panel (see Figure 1 SDF-4 PhantomView).
For starting and operation, refer to theInstallation and Operations Manual for theChecker board diagnostic and control panel. Forwiring diagrams, see Figures 20, 21, 22, 23, 24,25, 26, and 27 in this manual.
Each dust collector comes equipped withsolenoid valves that control the pulse cleaningvalves which clean the filter elements. Thesolenoids are connected electrically to theChecker board diagnostic and control panel (seeFigure 1 SDF-4 Phantom View). A wiringdiagram for each size of model SDF is suppliedwith the unit.
On versions of the Downsized Downflo withoutthe Checker board diagnostic and control panel,the solenoid valves are connected electrically tothe solid-state control timer. A wiring diagramfor each model is supplied with this version.
NOTEThe end user assumes responsibility forproviding all necessary disconnectingmeans and overload protection inaccordance with all local codes andregulations governing this installation.
NOTEThe SDF model solid-state timer requiresa low voltage (105 to 135 volt AC)control circuit in the fan starter. This isnot supplied by Torit.
Donaldson Company, Inc. © 1995 31
When all of the available outputs are notrequired, programming the control board forfewer outputs is accomplished by resetting theprogram pin selection wire on the solid-statecontrol board to the correct number of solenoidvalves being used (see Figure 29 SDF Solid-StateTimer Wiring Diagram).
The 1TGS is an optional switch (not supplied byTorit) and provides a means of control when thepulse sequence is activated. Consult your localTorit representative before using this method.
In grounded systems, neutral to control boxmust be connected to L2.
Input: 105-135 VAC/50-60 Hz/1
Output Solenoids: Type—solid-state switch(Triac). The load is carried by and turned onand off by the Triac. Rating–200 wattsmaximum load per output.
Pulse Width (ON Time): Factory set at 100milliseconds (1/10 second).
OFF Time: Adjustable–1 to 1.5 secondsminimum, 30 seconds maximum, factory setat 10 seconds.
Operating Temperature Range:-20°F to 130°F.
Transient Protection: 50kW transient of20ms duration once every 2 seconds.
Solenoid Valves: 115 volts AC at 19.7 wattseach.
2.6.4 Magnehelic Gage (See Figure 30Magnehelic Gage & Figure 31 Remote-Mounted Magnehelic Gage)
Some units are supplied with an optionalMagnehelic gage where the gage, pressure taps,and tubing have been preinstalled in our factory.Zero and maintain the Magnehelic gage per theoperating and maintenance instructions providedby the manufacturer of the Magnehelic gage.
For remote-mounted gages, the plastic tubingwill determine the distance away from the unitthat the gage can be located. If more tubing isrequired, please contact your local Toritrepresentative.
Mount the remote gages as shown in Figure 31Remote-Mounted Magnehelic Gage. Make theconnections as shown in Figure 30 MagnehelicGage. The high pressure port is connected to thedirty air plenum. The low pressure port isconnected to the clean air plenum. The high andlow pressure connections are located in theelectrical compartment of the collector. Usebulkhead fittings and mount them through thecabinet to the electrical compartment. Zero andmaintain the gage per operating instructions.
NOTEDo not adjust ON time unless theproper test equipment is used.Too much or too little ON time cancause shortened filter element life.Consult with your local Toritrepresentative.
32 Donaldson Company, Inc. © 1995
Figure 31Remote-Mounted Magnehelic Gage
MagnehelicGage
Screw Self-Drilling
Mounting Panel
Figure 30Magnehelic Gage
Plastic Tubing
Tubing Male Adapters1/8" NPT
Low Pressure Port (Ref)
High Pressure Port (Ref)
Dirty Air Plenum
Clean Air Plenum
MagnehelicGage
Donaldson Company, Inc. © 1995 33
2.6.5 Torit ∆∆∆∆∆P Control (See Figure 32Torit ∆∆∆∆∆P Control Wiring Diagram &Figure 33 Printed Circuit Board )
CAUTION
• All electrical work is to be done by aqualified electrician according to thenational and local electrical codes thatapply.
• All electrical power must be shut offduring installation.
• Do not apply in hazardous (classified)atmospheres.
NOTE• Do not mount controls in a high
vibration area without shock mounts.
• Do not mount controls in corrosiveatmospheres without an appropriateenclosure.
• Do not operate with the enclosure open.
Figure 32∆P Control Display
34 Donaldson Company, Inc. © 1995
Some units are supplied with an optional Torit∆P Control, with the control, pressure taps, andtubing preinstalled in our factory.
1. Using the wiring diagram (Figure 33 PrintedCircuit Board), wire all connections for themotor, ∆P Control (TB1), the solenoid timercontrol, and solenoid valves.
2. Wire the alarm circuit labeled AUXILIARY,if desired. When the pressure drop reachesthe preset ALARM value, the relay willactuate and the LED light labeled ALARMon the user interface will illuminate. TheAUXILIARY relay can be used to actuatevisual and/or audible alarms (by others).
CAUTION
STATIC-SENSITIVE ELECTRONIC ASSEMBLY
• Use proper grounding and handlingprocedures to prevent permanentdamage to this device.
• If it is necessary to remove the printedcircuit board, handle only by the edges.
• Avoid touching the socketed E2PROMpins.
NOTEThis control has a factory defaultvoltage selection of 115 VAC. If you planto operate at 230 VAC, change thejumper settings as shown on the printedcircuit board and as described inOPTIONAL SETTINGS in Section 2.6.5Torit ∆∆∆∆∆P Control.
3. Apply power to the ∆P Control, adjust thesetpoints for the High and Low setpoints—the pressure drops that start and stop thecleaning process—and the Alarm setpoint.
4. Press and hold one of the setpoint pushbuttons. While holding down the pushbutton, use the up and down arrow keys toadjust that setting. The setpoints will alwaysbe in the same units as chosen for thepressure display. Adjust the remainingvalues in the same manner.
Optional Settings
230 Volt Power Supply
To operate at 230 VAC remove the two jumperslabeled W1 and W3, reinsert one of the jumpersin position W2.
Change Units from Inches of Water toMillimeters of Water
To have all units displayed as mm wg, locate thejumper block labeled J1, located just above thePROG DISABLE terminals at the bottom edge ofthe printed circuit board. Remove the jumperfrom the center and left pins (numbered 2 & 3),and reinstall on the center and right pins(numbered 1 & 2).
Disabling the Setpoint Adjustments
To restrict the ability to change the setpoints,install a jumper wire across the PROGRAMDISABLE terminals on Terminal Block 2 (TB2).This will allow the operator to press theappropriate set keys to determine the currentsettings, but will not allow any changes until thejumper wire is removed.
Installing a key-operated, normally closedswitch through the door of the enclosure thatinterrupts the jumper wire will providetemporary access to the setting function withoutopening the control enclosure.
Donaldson Company, Inc. © 1995 35
External Alarm Reset
Locate the terminal block in the lower rightquadrant of the printed circuit board labeledARM. RESET (TB2). Wire this terminal block toa normally open key-operated switch. Closingthe switch will turn off the alarm and disable ituntil the switch is reopened. Momentarilyclosing the switch will turn off the alarm, but ifthe alarm conditions still exist, the alarm relaywill latch on again in 10 seconds (see Figure 33Printed Circuit Board).
Disable the Alarm
Locate the jumper block in the lower rightquadrant of the printed circuit board labeledMODE (J5). Remove the jumper from theALARM position. Disabling the Alarm Relayreduces the alarm function to lighting the LEDon the user interface.
Reinstalling the jumper in the SLAVE position(upper and middle pins) causes the AUXILIARYrelay to operate in parallel with the HI/LOCONTROL relay.
If the jumper is not installed in either position,the AUXILIARY relay does not function.
Analog Output
Locate the terminal block in the upper leftquadrant labeled SENSOR OUT (TB4). Thisconnector provides a 1-5 VDC outputproportional to the 0 to maximum span of thepressure sensor, 10K ohm load minimum (seeFigure 33 Printed Circuit Board).
Figure 33Printed Circuit Board
Alarm Disable
Alarm orAuxiliary Relay
Hi/Lo TimerControl Relay
{ {
{ {
Remote Alarm Reset
Disable ProgrammingUnits ("wg or mm wg)
Power ConnectionsVoltage Choice Jumpers
36 Donaldson Company, Inc. © 1995
Figure 35Remote-Mounted Photohelic Gage
Screw Self-Drilling
Photohelic Gage
Mounting Bracket
Figure 34Photohelic Gage
Tubing MaleAdapters 1/8" NPT
Low Pressure Port (Ref)
High Pressure Port (Ref)
Plastic TubingPhotohelic
Gage
Dirty Air Plenum
Clean Air Plenum
Donaldson Company, Inc. © 1995 37
2.6.6 Photohelic Gage (See Figure 34Photohelic Gage & Figure 35 Remote-Mounted Photohelic Gage)
Some units are supplied with an optionalPhotohelic gage where the gage, pressure taps,and tubing have been preinstalled in our factory.Proper wiring of the gage is necessary.
1. Remove the four (4)#6-32 x 5/16 longscrews and plastic enclosure on the back ofthe Photohelic gage and set aside.
2. Add the two jumper wires (not supplied byTorit) and wire the gage using 3/4" conduitopening, as shown in Figure 36 PhotohelicGage Wiring Diagram.
3. Reassemble the plastic enclosure and fastensecurely, using the #6-32 x 5/16" longscrews previously removed.
4. Zero and maintain the Photohelic gage perthe operating and maintenance instructionsprovided by the manufacturer of thePhotohelic gage.
For remote-mounted gages, the plastic tubingwill determine the distance away from the unitthat the gage can be located. If more tubing isrequired, please contact your local Toritrepresentative.
Mount the remote gages as shown in Figure 35Remote-Mounted Photohelic Gage. Make theconnections as shown in Figure 32 PhotohelicGage. The high pressure port is connected to thedirty air plenum. The low pressure port isconnected to the clean air plenum. The high andlow pressure connections are located in theelectrical compartment. Use bulkhead fittingsand mount them through the cabinet to theelectrical compartment. Wire the Photohelicgage per the instructions previously stated in thissection.
Figure 36Photohelic Gage Wiring Diagram
Wiring by others*For use with Solid State Timer only
Timer Board
Solenoid Valves
∆P Control
PRESSURESWITCH
110VACNEUT
From maincontrol panel
Remove factory installedjumper on timer labeled
(Pressure Switch)
38 Donaldson Company, Inc. © 1995
Figure 37Air Manifold Assembly
Solenoid Coil
Solenoid Valve
DiaphragmAir Valve
Manifold Weldment
Manifold Mounting Bracket
2.7 Compressed Air Supply Installation(See Figure 1 SDF-4 Phantom View)
Remove the plastic pipe plug from thecompressed air connection at the bottom of thecollector (see Figure 1 SDF-4 Phantom View)and connect the compressed air supply line. Usethread-sealing tape or pipe sealant on allcompressed air connections. Use quick-disconnect fittings if possible. Be sure that allcompressed air components are adequately sizedto meet the maximum system requirements of1.1 scf per pulse at 90-100 psig supply pressure.
If the compressed air inlet adapter is used toconvert the NPT threads to British pipe threads,see Figure 3 Compressed Air Inlet Adapters forassembly.
NOTEIt is important that the compressed airsupply be both oil and moisture free.Contamination in the compressed airline that is used to clean filter elementswill result in poor cleaning or cleaningvalve failure and a reduction in dustcollector performance.
Donaldson Company, Inc. © 1995 39
2.7.1 Air Manifold Assembly(See Figure 37 Air Manifold Assembly)
To access the air manifold assembly, remove thescrews on the back (see Figure 1 SDF-4 PhantomView) and lift the rear access panel off. Themanifold assembly contains diaphragm airvalves, solenoid valves, the manifold weldment,and the manifold brackets. See the ReplacementParts List for authorized Torit replacementparts.
When replacing the rear access panel, be surethe gasket is not damaged and the screws aretight, or leakage may occur.
2.7.2 Blower Compartment (See Figure 1SDF-4 Phantom View)
Remove the rear access panel as described inSection 2.8.1 Air Manifold Assembly in order toaccess the blower compartment.
2.7.3 Dust Storage Compartment
Access to the dust storage compartment isthrough the hinged door on the front of the unit(see Figure 1 SDF-4 Phantom View). The dustcontainer and cover are in the dust storagecompartment. The dust container support systemis located at the base of the dust storagecompartment and is removable. The dustcontainer support system may be lifted from itstwo mounting pins and removed through thedust compartment door.
4.0 START–UP
1. Turn on the compressed air supply to theDownflo model SDF dust collectorcompressed air manifold. Adjust to 90 psigof pressure, minimum. Pressure of90-100 psig is the most typical setting forsatisfactory cleaning performance (seeSection 5.0 Operating Adjustments).The lower the compressed air setting, thelower the pulse valve air consumption.
2. Turn on the blower motor by pressing thegreen BLOWER ON button on the Checkerboard diagnostic and control panel.
3. Adjust the blower for the proper systemairflow that is desired by adjusting thevolume control damper on the blower fanexhaust discharge if applicable (see Figure 1SDF-4 Phantom View). The outlet damper isnot designed to be used when either theoutlet adapter for ducting or after filtering,or the weather hood are attached to thecabinet.
Disconnect the SDF from all electricalpower sources and compressed air supplyand bleed off any residual pressure beforeperforming any service work.
CAUTION
NOTEMake sure the dust storage compartmentdoor is closed tightly. Handles should beturned clockwise to seal the door properly.
Stand clear of blower fan exhaust area asdebris can be exhausted and cause injury.
CAUTION
40 Donaldson Company, Inc. © 1995
* ∆P = Pressure Drop across filter elementsin inches water gage.
NOTE• Do not increase compressed air
pressure beyond 100 psig ascomponent damage may result.
• Do not increase or decrease the pulseON TIME on the solid state timer.Longer or shorter pulse ON times donot aid in cleaning of filter elements,they just waste compressed air andcause shortened filter element life.
5.0 OPERATING ADJUSTMENTS
Compressed air is recommended to be set at90 psig. The control is factory set to clean onefilter element every ten seconds.
5.1 Checker Board
Refer to the Start-up Procedure in theInstallation and Operations Manual for theChecker board diagnostic and control panel(IOM-72202-00) and follow this procedure forany operating adjustments that may benecessary.
5.2 Solid-State Control Timer
The optional solid-state control timer is also setto clean one filter element every ten seconds.Either the Magnehelic or Photohelic gage can beused with the solid-state timer.
If the filter elements are operating at a higherthan design ∆P*, it may be lowered byincreasing the frequency of cleaning. Theminimum off time (elapsed time), between pulsesis 1-1.5 seconds. Additional cleaning energy maybe obtained by adjusting the pressure upward toa maximum of 100 psig.
Pulse ON TIME can be checked or adjusted byconsulting your local Torit representative.
If operating at a low ∆P, you may want to raiseto a higher pressure drop by increasing the OFFTIME between pulses on the solid state timerboard. This will greatly reduce your compressedair consumption. Use of the optional pressureswitch control (Photohelic gage) is an alternativeto provide compressed air savings. This controlsthe solid-state timer board to only pulse at thedesired high and low ∆P* set needle. The pulsecycle starts when the filter elements obtain thatset point and continues the pulse cycle until thelow ∆P set point is reached, at which time thepulse cycle stops. This method of using thePhotohelic gage can save additional compressedair, especially when collecting low levels ofcontaminants (low loading).
Donaldson Company, Inc. © 1995 41
5.3 ∆∆∆∆∆P Control Calibration
The only user calibration is the zero adjustmentof the display. Due to either slight changes inelectronic components over time or pressuredifferentials within the plant environment,occasionally the display may show somethingother than 0.0 while at rest. Use the followingprocedure to recalibrate the zero point.
1. Power the ∆P Control for a minimum of30 minutes to stabilize the operatingtemperature.
2. Remove power from the ∆P Control so thatthe display shuts down.
3. Press and hold the LOW SET, HIGH SET,and ALARM SET keys while reapplyingpower to the ∆P Control. Continue to holdthese keys while the ∆P Control goesthrough a power-up routine. This isindicated by sequentially displaying "8" ineach digit, and then displaying "0.0" (seeFigure 32 ∆P Control Display).
4. Release all three keys. The new calibrationautomatically stores in memory.
5.4 Outlet Damper Adjustment
Blower adjustments can be made by testing theduct system flow rate and adjusting the volumecontrol damper to the desired system flow rate.
The airflow through the Downsized Downflocollector may be adjusted by using the outletdamper located on the top of the unit (seeFigure 1 SDF-4 Phantom View). Turn the twoknobs to loosen them. While still grasping theknobs, slide the damper plate. The more thedamper is closed, the more the airflow will berestricted. The damper will give the maximumairflow through the collector when fully open.
5.5 Operating Checks
Monitor the exhaust visually. Exhaust shouldremain visually clean. If a leak develops, it willbe first noticed as a visual puff of dustimmediately after a cleaning pulse. A red lighton the Checker board will also indicate thatthere may be a problem.
Monitor filter element pressure drop by meansof the visual display on the Checker board. Seethe Installation and Operations Manual for theChecker board diagnostic and control panel.Equilibrium pressure drop (stabilized ∆P) isgenerally 3-4 inches water gage for seasonedfilters, but 1-6 inches water gage is considerednormal.
NOTECompare the blower motor amperagedraw to the motor manufacturer'snameplate amperage rating. Operatingamperage greater than the manufacturer'srecommendation will cause damage.
NOTEAt initial start-up or with any new filterelements, the blower may overloadbecause of airflow higher than designlevel. If this happens, partially close thevolume control damper and check blowermotor amperage draw.
42 Donaldson Company, Inc. © 1995
This procedure must be followed in orderto ensure safe changeover of filters.
CAUTION
NOTECheck to make sure that the wing nutsare securely tightened. Excessivecompression of the filter gaskets cancause leakage. Hand tighten only.
6.2 Filter Element Installation(See Figure 1 SDF-4 Phantom View)
1. Slide new Torit-Built filter elements ontoeach suspension yoke.
2. Hand tighten filters by turning wing nutclockwise onto suspension yoke threads untiltightened securely.
6.3 Bag-Out Filter Element Removal(See Figure 38 Bag-Out Assembly &Figure 39 Bag-Out Filter Removal)
The bag-out option allows removal of filterswithout exposure to atmosphere. Each filter isremoved in its own bag according to thefollowing procedure.
1. Attach the polyethylene bag to the bag-outcollar using the strap as shown in Figure 38Bag-Out Assembly.
2. Reaching into the bag collar, using the bagas a rubber glove, loosen the filter byunscrewing the wing nut counterclockwiseby hand.
6.0 SERVICE
6.1 Filter Element Removal
1. Loosen filters, beginning with the top row,by unscrewing the wing nutscounterclockwise by hand (see Figure 1SDF-4 Phantom View).
2. Move the filters to break the gasket sealsbetween the filter and the sealing surface.Rotate the filter slowly 1/2 turn to dump anyloose dust off the top of the filter. Slide thefilter along the suspension yoke and out thefront of the access port.
3. Inspect the sealing surface to make sure thatthe gasket sealing area is free of dust.
4. Check for an accumulation of dust in thestorage area. If cleaning is required, seeSection 6.4 Dust Removal/Dust Container.
Disconnect the SDF from all electricalpower sources and compressed air supplyand bleed off any residual pressure beforeperforming any service work.
CAUTION
NOTE• Do not drop or rap element on the
floor or other hard surface, as damageto the filter element will occur, resultingin leakage.
• It is necessary to clean the dust off thegasket sealing area to ensure a positiveseal of the filter gasket.
Donaldson Company, Inc. © 1995 43
Bag
Collar
Strap
Cut Ties
Cable Ties
Cut Between Cable Ties
Figure 38Bag-Out Assembly
Figure 39Bag-Out Filter Removal
3. Move the filter to break the gasket sealbetween the filter and the sealing surface.Rotate the filter 1/2 turn to dump any loosedust off the top of the filter. Slide the filteralong the suspension yoke and out theaccess port into the bag as far as possible.
4. Use cable ties or tape to close the bag nearthe filter in two places about one or twoinches apart (see Figure 39 Bag-Out FilterRemoval). Cut the bag between the cableties. Dispose of the filter properly.
5. Remove the strap and the remainder of thebag from the collar. Dispose of properly.
6.4 Dust Removal / Dust Container
Turn off the dust collector and empty as neces-sary keeping the dust in the dust container to amaximum of 2/3 full. See Service Interval settingin the Maintenance Required portion of theInstallation and Operations Manual for theChecker board diagnostic and control panel(IOM-72202-00).
NOTEDo not let the dust storage containeroverfill. It can cause poor collectorperformance and require an extensiveclean-up due to overflow of dust whenremoving the container.
44 Donaldson Company, Inc. © 1995
*Note: The dust container and its contents maybe sealed by placing the top cover on thecontainer and then disposing of the entirecontainer completely. Another dustcontainer may then be placed in theDownsized Downflo.
Figure 40Dust Container Support System
HandleDust Container
Top cover is storedunder dust container.
Interior hopper notshown for clarity.
~
1. Open the hinged access door on the front byturning the two latches counterclockwise(see Figure 1 SDF-4 Phantom View).
2. Reach inside the model SDF and grasp thehandle on the dust container support system(see Figure 40 Dust Container SupportSystem). Pull the handle down to loosen thedust container from the gasketed flange.Remove the dust container by grasping thehand holds on the sides and pulling thecontainer forward. Lift the container anddispose of the contents into the properreceptacle.* Replace the dust container andseal it against the gasketed flange by pullingthe handle on the dust container up and in.Close the hinged access door and turn thetwo latches clockwise to seal the door.
6.4.1 Dust Removal—Hopper Model
1. The hopper, with or without gate, is not forstorage. Empty the dust containerperiodically as necessary to keep dust in thehopper at a minimum. If a drum or pail isused, empty it when 2/3 full. Shut off thecollector fan before emptying the drum orpail.
2. When using the hopper with gate, close thegate and empty the drum/pail. Reinstall thedrum/pail and open the gate. The collectorfan does not need to be shut down if thisprocedure is followed.
Donaldson Company, Inc. © 1995 45
Figure 41Typical Electrical Component Assembly
Door shown inan open position
Checker boardPC Assembly
Checker boardInterface
Vinyl Tubing
Conductor Cable
Safety Filters Mounting Panel
GroundingLug
MotorStarter
(Contactor)
Power Cord
Overload RelayTransformer
Plastic Bushings
Primary Fuse
Connectors Secondary Fuse
Shut off and bleed off residual pressurebefore performing any service work.
CAUTION
Disconnect the Downflo model SDF fromall electrical power sources and compressedair supply and bleed off any residualpressure before performing any servicework.
CAUTION
6.5 Compressed Air Components
1. Periodically check any compressed air filter/dryer components and service them byinstalling new compressed air filters anddraining any moisture off by followingmanufacturer's instructions.
2. Check the Downsized Downflo compressedair manifold for contamination, oil and/orwater. Clean or drain if necessary.
3. With the compressed air supply turned on,check the cleaning valves, solenoid valves,and tubing for any leakage. Replace anycomponents that are leaking compressed air(reference the Replacement Parts List).
6.6 Electrical Service (See Figure 41 TypicalElectrical Component Assembly)
A model SDF dust collector prewired electricalcompartment equipped with the Checker boarddiagnostic and control panel is shown inFigure 41 Typical Electrical ComponentAssembly. For a detailed description of theseparts see the Checker Board Replacement PartsList RPL-46813-00.
46 Donaldson Company, Inc. © 1995
A. Blower motor does notstart.
B. Blower motor starts, butdoes not keep running.
1. Wiring.
a. Proper wire size notused for motor.
b. Not wired correctly.
c. Unit not wired foravailable voltage.
d. Input circuit down.
e. Electrical supply circuitdown.
1. Starter kicks out.
a. Incorrect starteroverload relay isinstalled.
b. Collector access panelsare off or not closedtight.
c. Blower damper controlnot adjusted properly.
1a. Rewire per local andnational codes for properwire size.
1b. Check and correct internalmotor wiring for properconnections for yourvoltage (reference MotorManufacturer WiringDiagram on motor).
1c. Correct wiring for properinput voltage.
1d. Check input to motorcircuits for voltage on allleads.
1e. Check the electrical supplycircuit for proper outputvoltage or fuse, circuitbreaker fault. Replace ifnecessary.
1a. Check for proper motorstarter overload relay.Replace with proper valueoverload relay if needed.
1b. Tighten access panel(s) byhand securely (see Figure 1SDF-4 Phantom View andSection 6.2 Filter ElementInstallation located in thismanual).
1c. Check airflow in ductingfor proper requirements.Adjust the damper controluntil the proper airflow isachieved and the blowermotor amperage draw iswithin manufacturer motorratings.
7.0 Troubleshooting GuideTROUBLE POSSIBLE CAUSE REMEDY
Donaldson Company, Inc. © 1995 47
7.0 Troubleshooting GuideTROUBLE POSSIBLE CAUSE REMEDY
B. Blower motor starts, butdoes not keep running(cont.).
C. Dust discharge out ofclean air outlet.
D. Insufficient airflow.
1. Starter kicks out (cont.).
d. Electrical circuitoverload.
1. Filter element damage,dents in the end caps,gasket damage or holes inpleated media.
2. Filter wing nuts are loose.
1. Blower rotation backwards.
2. Collector openings not tightor closed.
1d. Check that the supplycircuit has sufficient powerto run all equipment.
1. Replace the filter elements.Use only Torit-Built filterelements (see Figure 1SDF-4 Phantom View andinstall as in Section 6.2Filter Element Installationlocated in this manual).
2. Tighten filter wing nutssecurely (see Figure 1SDF-4 Phantom ViewandSection 6.2 Filter ElementInstallation located in thismanual).
1. Check blower rotation.The rotation should beclockwise, looking down ontop of the blower motor(see Figure 1 SDF-4Phantom View and Section4.0 Start-up located in thismanual).
2. Check that access panelsare in place and tightenedsecurely (see Figure 1SDF-4 Phantom View andSection 6.2 Filter ElementInstallation located in thismanual). Also check thataccess door to dustcontainer is securedproperly (see Figure 1SDF-4 Phantom View andSection 6.4 Dust Removal /Dust Container located inthis manual).
48 Donaldson Company, Inc. © 1995
TROUBLE POSSIBLE CAUSE REMEDY7.0 Troubleshooting Guide
D. Insufficient airflow(cont.).
3. Blower exhaust area isrestricted.
4. Filter elements pluggedwith particulate.
a. Filter elements need tobe replaced.
b. Lack of compressed air.
c. Pulse cleaning notenergized.
3. Check exhaust area forblockage. Remove materialor debris that is blockingthe exhaust area or adjustdamper flow control onexhaust area.
4a. Remove and replace usingonly Torit-Built filterelements (see Figure 1SDF-4 Phantom View andSection 6.2 Filter ElementInstallation located in thismanual).
4b. Check compressed airsupply for 90 psigminimum. See Figure 1SDF-4 Phantom View.Increase pressure asdescribed in Section 5.0Operating Adjustmentslocated in this manual.
4c. Check supply voltage to thetimer board with a voltohm meter. Check the fuseon the timer board. If thefuse is blown, replace itwith one of equal value. SeeWiring Diagram in Figure29 SDF Solid-State TimerWiring Diagram andSection 2.6.3 Solid-StateTimer Specifications. Alsosee the Installation andOperations Manual for theChecker board diagnosticand control panel (IOM-72202-00) Section 7.0Troubleshooting Guide.
Donaldson Company, Inc. © 1995 49
TROUBLE POSSIBLE CAUSE REMEDY
7.0 Troubleshooting Guide
4. Filter elements pluggedwith particulate.
d. Dust storage area is toofull or plugged.
5. Pulse valves are notfunctioning.
a. Pulse valves areleaking compressed air.
b. Pulse control solid-statetimer board has failed.
D. Insufficient airflow(cont.).
4d. Clean out dust storage areaas described in the Section6.4 Dust Removal / DustContainer in this manual,reference Figure 1 SDF-4Phantom View and Section6.1 Filter Element Removaland 6.2 Filter ElementInstallation.
5a. Lock out all electricalpower to the model SDFand bleed off thecompressed air supply.Check for debris, valvewear, or diaphragm failureby removing the diaphragmcover on the pulse valves.Also check for solenoidleakage and/or damage.If pulse valves or solenoidvalves and solenoid tubingare damaged, replacepart(s).
5b. Check supply voltage to thetimer board with a voltohm meter. Check the fuseon the timer board. If thefuse is blown, replace itwith one of equal value. Ifthe fuse and input power tothe control board are okay,but there is not any outputvoltage to the solenoidpulse control valves,replace the pulse controltimer board (referenceSection 2.6.3 Solid-StateTimer Specifications andFigure 29 SDF Solid-StateTimer Wiring Diagram).
50 Donaldson Company, Inc. © 1995
TROUBLE POSSIBLE CAUSE REMEDY
7.0 Troubleshooting Guide
5. Pulse valves are notfunctioning.
c. Pulse control timerboard is out ofadjustment.
1. No power to the control.
2. Fuse blown.
1. Out of calibration.
2. Differential pressurepresent from indoor tooutdoor with collectordischarging outside.
1. Not properly wired to thetimer board.
2. Faulty relay.
3. Pressure tubingdisconnected, ruptured, orplugged.
D. Insufficient airflow(cont.).
E. ∆∆∆∆∆P Control shows nodisplay.
F. ∆∆∆∆∆P Control display doesnot read zero when atrest.
G. ∆∆∆∆∆P Control is on, butdoes not start thecleaning system.
5c. Refer to Section 2.6.3 Solid-State Timer Specificationslocated in this manual andto Figure 29 SDF Solid-State Timer WiringDiagram.
1. Use multimeter to check forvoltage at the terminals ofTB1.
2. Check the fuse in fusetower F1. Replace if bad.
1. Disconnect pressure tubing.Recalibrate per Section 5.3∆P Control Calibration.
2. Recalibrate with tubingattached per Section 5.3 ∆PControl Calibration. Ignoreif desired.
1. Be sure that the PressureSwitch connection on thetimer board is connected toterminals 7 & 8 on TB3.
2. Test the relay for properclosure with multimeter. Ifnonfunctional, replace the∆P Control.
3. Check the tubing for kinks,breaks, contamination, andloose connections.
Donaldson Company, Inc. © 1995 51
TROUBLE POSSIBLE CAUSE REMEDY
7.0 Troubleshooting Guide
1. Jumper wire across thePressure Switch terminalson the timer board.
2. Not properly wired to thetimer board.
3. HIGH SET and/orLOW SET are improperlyadjusted for systemconditions.
4. Pressure tubing isdisconnected, ruptured, orplugged.
1. Alarm setpoint too low.
2. Excessive pressure drop.
3. Pressure tubing isdisconnected ruptured, orplugged.
1. Improper operation.
2. Programming keysdisabled.
1. Remove the PressureSwitch jumper wire beforewiring to the ∆P Control.
2. Be sure that the PressureSwitch connection on thetimer board is connected toterminals 7 & 8 on TB3.
3. Adjust setpoints to usablevalues.
4. Check tubing for kinks,breaks, contamination, andloose connections.
1. Adjust alarm setpoint to ahigher value.
2. Check cleaning system andcompressed air supply;replace filter elements ifthey will not clean down.
3. Check tubing for kinks,breaks, contamination, andloose connections.
1. Press and hold one of thethree setpoint keys to usethe arrow keys.
2. Remove Program Disablejumper from terminals3 & 4, TB2.
H. Pulse cleaning neverstops.
I. Alarm light is on.
J. Arrow keys do not work.
52 Donaldson Company, Inc. © 1995
TROUBLE POSSIBLE CAUSE REMEDY7.0 Troubleshooting Guide
1. Improper wiring.
2. Defective solenoids.
3. Timer board not powered.
4. Possible defective timerboard.
1. Check all wiring betweenthe ∆P Control and timerboard and between thetimer board and solenoidvalve coils.
2. Check all solenoid valvecoils.
3. Check the Power On LEDon the timer board. If notilluminated, check thesupply voltage to the timerboard with multimeter.Check the fuse on the timerboard. Replace with identi-cal fuse if necessary.
4. If LED is illuminated,observe the output LEDs.Install a temporary jumperacross the Pressure Switchterminals. Output LEDsshould flash in sequence.Check output using ananalog multimeter set to150 VAC range. Measurefrom SOL COM to asolenoid output. The meterneedle will deflect if voltageis present when LEDflashes for that output.Replace the board if eitherthe LEDs do not flash or novoltage is present at theoutput terminals duringflash.
K. Control CLEANINGlight on, but no pulsecleaning occurs.
Donaldson Company, Inc. © 1995 53
NOTESNOTESNOTESNOTESNOTES
54 Donaldson Company, Inc. © 1995
The Torit® Warranty
Donaldson warrants that it will, at its option, repair or replace the goods, or return thepurchase price thereof, which are found to be defective in material or workmanship, or notin conformity with the contract requirements provided that, within one (1) year of shipmentthereof, Purchaser gives written notice of such defect to Donaldson, the Purchaser returns thegood to a Donaldson Company designated point of manufacture, with transportationcharges prepaid by Purchaser, and an examination by Donaldson discloses to its satisfactionthe existence of such defect or nonconformity with the contract requirements. In no eventshall Donaldson be liable for any incidental, special, or consequential damages resulting fromsaid defects or nonconformity.
The foregoing does not apply to components which were not manufactured by Donaldson,and is expressly in lieu of all other warranties expressed or implied, including any warrantyof merchantability or fitness for a particular purpose or use. There are no warranties whichextend beyond the foregoing. No agent, employee or representative of Donaldson has anyauthority to bind Donaldson to any affirmation, representation, or warranty concerning thegoods sold under this sales contract and unless affirmation, representation, or warranty madeby an agent, employee, or representative is specifically included within this written agreement,it shall not be enforceable by the Purchaser.
PARTS ORDERING INFORMATION
When ordering parts, give model number andserial number of dust collector, part number,
description and quantity of parts desired.
IOM-46740-00August 1999 Revision 5© Copyright 1995 TORITPrinted in U.S.A.
Parts and Service ProgramFor genuine TORIT-BUILT® replacement filters
and parts, call the TORIT EXPRESS Line:
1-800-365-1331
Donaldson Company, Inc.Torit ProductsP.O Box 1299Minneapolis, MN55440-1299 U.S.A.toritmktg@mail.donaldson.com