Contents Indication of alarm lamp ....................................... 15 Specifications ........................................................ 16 Optional accessories ............................................. 17 After-sale service ................................................... 18 Structural drawing, parts list ................................ 19 Connection diagram .............................................. 21 General checklist for maintenance of dust collectors ... 22 Precautions ............................................................ 1 Construction .......................................................... 3 Operation panel ..................................................... 4 Installation ............................................................. 5 Before use .............................................................. 8 After use ................................................................. 9 Operating display selection switch ...................... 12 PULSE JET DUST COLLECTOR (for normal dust particles) RG 700YA HANDLING INSTRUCTIONS Congratulations on your wise decision to purchase this Hitachi Dust Collector. We suggest that you carefully read this Handling Instructions prior to using the Dust Collector, so that its inherent operating functions can be fully demonstrated.
Transcript
Contents
Indication of alarm lamp....................................... 15Specifications ........................................................ 16Optional accessories ............................................. 17After-sale service ................................................... 18Structural drawing, parts list ................................ 19Connection diagram.............................................. 21General checklist for maintenance of dust collectors ... 22
PULSE JETDUST COLLECTOR (for normal dust particles)
RG 700YAHANDLING INSTRUCTIONS
Congratulations on your wise decision to purchase this Hitachi Dust Collector. Wesuggest that you carefully read this Handling Instructions prior to using the DustCollector, so that its inherent operating functions can be fully demonstrated.
Meanings of WARNING , CATION , NOTE
Precautions during use are divided to [ WARNING] and [ CATION] and these meanings are explainedrespectively along with the meaning of [NOTE] as follows:
WARNING : Caution against cases in which possibilities for death of the user or serious injuries to be
sustained on the user are assumed when this dust collector is erroneously handled.
CAUTION : Caution against cases in which possibilities for injuries to be sustained on the user and
only material damages are assumed when this dust collector is erroneously handled.
Even a seemingly trivial matter described in [ CAUTION] can lead to serious consequences depending on thesituation. Accordingly, make sure that all the tips for safety mentioned above are observed without fail.
NOTE : Key points to be noted concerning installation, operation and maintenance of the product.
PRECAUTIONS To prevent accidents such as a fire, electric shock, injury, etc., make absolutely sure that the following points
are observed. Read these [PRECAUTIONS] in every respect before use and abide by the given instructions. After reading, be sure to keep this manual at a place where anybody can access for reading before use.
WARNING
Inflammables such asgasoline, thinner,benzene, kerosene,paints, etc.
Dust particles caused bya high-speed cutter, beltsander, grinder, etc.
Fumes generated bywelding and soldering.
Explosive dust particlesof materials such asaluminum, zinc, magne-sium, titanium, etc.
Objects with hightemperatures such assmoldering cigarettebutts, matches, etc.
Carbon powder and finedust particles of up to 5µmas well as tacky or stickymaterials such aschemicals, water, oil,paints, cement powder, etc.
2. For power source, use the voltage and frequency specified in the name plate.
Use of power source other than what is specified can result in an electric shock, fire and machine failure.3. Be sure that the dust collector is grounded.
Otherwise, there is a risk of an electric shock in case of a machine failure and electric leakage. (For details,refer to the item of (1) Installing ground/earth-leakage breaker in Page 5.)
4. Note that this dust collector is designed for indoor use. Never use this dust collector outdoor.
1. Never allow the dust collector to suck in the following substances.
Doing so can result in a fire and machine failure.
111
PRECAUTIONS
WARNING
5. Ask a repair shop for the repair of this dust collector.
Do not remodel this product since this is in conformity with relevant safety standards.
Be sure to ask your dealer, where you purchased this product for repair.
Repair undertaken by a person without technical knowledge can result not only in a poor machine
performance but also in accidents and injuries.
222
CAUTION
Be sure to check before applyingair pulses
Use compressed air with specifiedpressure
For the pressure of com-
pressed air, use the one with
4 - 7 (kg/cm2).
Use of pressure other than what isspecified can result in the damageof an air tank and the failure of anelectromagnetic valve.
Set a regular filter properly
Use of the dust collector with afilter having torn sections andholes or without the filter canresult in the failure of the dustcollector.
Wing bolt
Tear, holeFilter
Set the dust collector at a
horizontal place
Otherwise, the dust collectoris subject to vibrations or afall.
Protect power supply cords
Do not bring the power supplycords close to heat and oil andinto contact with sharpcorners. Do not tug the cords.Do not place heavy articles onthe cords. Avoid placing thecords between other objects.
Move the main unit properly
Be sure to use both of the fourhanging bolts and move themain unit quietly to protect itfrom any possible damage.
Do not turn
ON an opera-
tion switch
and manual
pulse switch in
a state where
clamps are off.
This caution must beexercised to prevent accidentscaused by scattered dustparticles and by the door.
NOTE The dust collector can come across with unexpected accidents and failures when maintenance is
not performed properly. Operate this dust collector safely and effectively by using the list of
check points for maintenance provided at the end of this manual.
Discharge port
Motor
Air tank
Electromagneticvalve
Pulse pipe
CONSTRUCTION
Operation panel
For details aboutindividual swit-ches, refer to Page4.
Dust box
Remove the clamp, open the dustcover, draw out the dust box, anddiscard accumulated dustparticles from the dust box at theearliest possible opportunity.
Scrape out of the main unit anydust particles spilled to theoutside of the dust box.
Dust cover
Dust box
Clamp
Filter
This filter col-lects sucked-indust particlesquite efficiently.
It is necessary toperform clean-ing and inspec-tion more thanonce in every 1 -2 months on aperiodic basis.
Suction port
Connect the hose.(Inner diameter 250 mm)
HoseSuction port flange
Air filter
Install the air filterattached to thecompressed airconnecting port ofthe main unit, andconnect the air tubeto the air filter.(Pressure 4 – 7 kg/cm2)
Panel cover
Filter cover
Dust cover
3
Fan
OPERATION PANEL
Display selection switch
Press this switch to display thefilter’s differential pressure,hours till dust discard, hours tillfilter inspection, and air volume.
Digital display
Contents selectedby the displayselection switchare displayed.
Alarm display
A lamp informs you of abnormality andthe period of inspection.
1 If a reverse connection is made on thethree-phase power, a reverse rotation ofthe fan occurs, ending up in an operationalfailure.
2 Overload applied to the motor stopsoperation.
3 The lamp informs you of abnormal pipingof the pressure sensor.
4 The lamp informs you of the period forfilter inspection and dust discard.
Alarm reset switch
When a warning lamplights up on the alarmdisplay, find out why itlights up and removethe cause of trouble,press this switch andmake preparations tostart operation.
Set/register button
Use this button tochange or registerset values. Fordetails, refer toPage 12.
Set-value-changingbutton
It is possible tochange the setvalues asdesired usingthe up-buttonand down-button.
Manual pulse switch
It is possible to elimi-nate dust particlesby applying pulsesusing hands.
After operation isstopped, dustparticles can beeliminated moreeffectively if manualpulses are applied.
Operation switch
This switch startsand stops opera-tion of the fan.
4
INSTALLATION
1 Installation of ground/earth-leakage breaker
WARNING
To prevent accidents by electric shocks if electric leakage should occur,
Install an earth-leakage breaker on the power source to which this dust collector is to be connected.
Make sure before use that this dust collector is grounded. It is recommended that grounding is
performed for safety even in case of a dust collector with the power source for which a current-
operating-type earth-leakage breaker is installed. The earth-leakage breaker features less than 15
milliampere (mA) rated sensitivity current and less than 0.1 second operating time.
Perform settings according to following procedures:
Fasten with screws the grounding terminal of a groundinggreen wire tip of the power supply cord, and connect it tothe grounding wire as illustrated in the right figure.
Be sure that no tension is applied to the grounding greenwire.
Specialized work is required for the installation of an earth-leakage breaker as well as groundingaccording to the technical standards on electric installation and indoor wiring regulations. (Anelectrician with a diploma is required for the grounding installation, and therefore consult withyour electrical work shop. Fee-charging.)
For grounding work
s Specify the third class grounding work.s If there is a grounding terminal already installed, check if grounding capacity is sufficient.
For earth-leakage breaker work
s Install an earth-leakage breaker with a capacity that is above the rated current.(Rated current of the dust collector is indicated in the name plate.)
s If there is an earth-leakage breaker already installed, check out the above-mentioned capacity.
Gro
un
din
gIn
sta
llati
on
wo
rk
Dustcollector Power
supplycord
Groundinggreenwire(with
terminal)
Grounding terminal
5
WARNNG
The construction of this dust collector is not explosion-proof. Do not use this dust collector at a
place near inflammables such as gasoline, thinner, etc., to prevent possible accidents.
This dust collector is for indoor use. Never use this dust collector outdoor. Use of this dust
collector outdoor can result in an electric shock and fire due to electric leakage.
Choose a horizontal and flat place on the floor to facilitate operation of the dust collector. Secure a sufficient floor strength in consideration of the product weight (280 kg).
4 Installation of hose
Suction ports are provided on two
sides. Use the suction ports as
desired in the following manners
according to working conditions.
s To remove the suction port, removefour bolts on the suction port flange.
s To install the suction port, positionthe suction port flange, and fasten itusing bolts.
s Fix a suction port cover onto thesuction port that is not in use.
3 Place for installation
Suction port cover
Bolt
Suction port flangeBolt
6
When the cord is extended in conjunction with
installation, a sufficiently thick one is required to prevent
malfunction due to a voltage drop. Relation between
the maximum length (total length of cord) and the cord
thickness is shown on the right table.
(The attached cord is 5 meter long.)NOTE The cord length shown in the
above table differs to some extent
depending on the power situation.
Cord thicknessNominal conductive crosssection of cord (mm2)
Cord length
Maximum length
3.5 5.5
20m 31m
Standard of Maximum Cord Length
2 Extension of power supply cord
WARNING
When extending the power supply cord, be sure to replace the whole cord with a completely new
one. Because, addition of a new cord to the existing cord can result in a risk for a fire and electric
shock.
INSTALLATIONNOTE Proper work with a minimum loss is essential for the piping of hoses and hoods, considering the
surrounding conditions, working environment, etc. Procure separately sold component parts and
ask your dealer for installation.
When using metal piping parts, be sure to perform complete insulation between a wall surface and
the metal piping parts inside the wall surface.
Some dust particles may blow out of the discharge port immediately after installation or elimination
of dust particles. Installation of an exhaust duct is recommended depending on the working
environment.
5 Connection of compressed air
Compressed air connecting holes are provided on two sides.
Use the compressed air connecting holes as desired in the following manners according to working
conditions.
s When connecting compressed air, perform connection in order of 1 1/4 nipple, 2 air filter and 3 airtube.
s Check and confirm that a 1/4 plug is firmly secured to a joint on the side to which the air tube is notconnected.
NOTE Before operation of this dust collector, make sure that the above-mentioned connection is
completely carried out and that a panel cover, filter cover, and dust cover are all fixed with clamps.
Be sure to use specified pressure (4 - 7 [kg/cm2]) for compressed air.
Use of pressure other than what is specified can result in the damage of an air tank and the failure
of an electromagnetic valve. (When the 1/4 plug and 1/4 nipple are once removed, prevent air
leakage with sealing tapes, etc.)
1/4 plug
1/4 nipple fixing hole (joint)
Prevent air leakage usingsealing tapes, etc.
Sealing agent is coatedat the time of deliveryClamps
7
Filter cover
Dust cover
3 Air tube(to be purchased separately)
1 1/4 nipple (standard accessory)
2 Air filter(standard accessory)
BEFORE USE
1 Check the following points at first
Check and confirm that the dust box is empty. If dust particles are accumulated, get rid of them by
cleaning before use.
Make sure that there is no air leakage in the packing, suction hose and other piping parts and that they
are all set properly.
Make sure that the panel cover, filter cover and dust cover are completely secured with clamps.
2 Connection of power supply cord
Connect the power supply cord correctly to the power source specified in the name plate. In this case,
connect a grounded phase (S phase) among three power supply wires to the white wire of the power
supply cord.
3 Check direction of motor rotation
Turn ON the operation switch on the operation panel and check that a [FAN REVERSE] lamp of
the alarm display does not light up. In case of a reverse rotation, a lamp lights up and the motor does
not rotate.
In this case, turn OFF the main power switch of the original installation and switch over the connection
of R phase and T phase of the power supply cord.
To re-start operation, press the alarm reset switch and then press the operation switch.
R phase (red wire)
S phase (white wire)
T phase (black wire)
Ground (green wire)
8
Switch connection
Wait for more than a minute after eliminating dust particles in the filter, remove one piece of clamp,
draw out the dust box, and then discard accumulated dust particles.
Try to discard the dust particles at the earliest opportunity, and the dust articles spilled out of the dust
box should also be scraped out of the main unit.
WARNING
AFTER USE
1 Elimination of dust particles from filter
Manual pulses after the stop of operation can eliminate dust particles more effectively. Remember
that a pulse noise is made four times during pulse application. During manual pulse application after
the stop of operation, dust particles flow backward and therefore do not look into the suction port, etc.
NOTE Before taking actions listed in the following items, make sure that the operation switch is turned OFF,
the main power switch is turned OFF and suction is completely stopped.
2 Cleaning of dust box
WARNING
Discard dust particles accumulated in the dust box every day. Otherwise, there is not only a re-
adhesion of blown-up dust particles to the filter in subsequent operation but also a cloud of dust
articles is produced, causing a risk for explosion of dust particles.
3 Cleaning and inspection of filter
Never open the panel cover, filter cover and dust cover while a mark is displayed on the digital
display of the operation panel. Do not look into the suction port for dust particles as there is a risk
of the dust particles to scatter.
Dust eliminating operation by pulse alone is not enough when the filter is heavily clogged up. Under
such circumstances, suction power naturally downs. Clean up the filter on a periodic basis (more than
once in every 1 - 2 months).
s Extracting filter
(1) Remove two clamps andopen the filter cover.
(2) Remove the wing bolt and then quietly extractthe filter along with the filter holder.
9
Filter holder
Filter cover
Filter
Wing bolt
Filter Clamp
s Installing filter
1 To begin with, insert the filters into thefilter holder. Insert two filters into onefilter holder. Be sure to insert the filtervertically.
2 Mount the filters on the left and right filter guiding plates and thrust them in until they contact the filter stop.
3 Then, lift the front of the filter holder up and fasten it scurely with the wing bolt until it hits the filter supportplate. If a male screw and a female screw of the wing bolt do not engage well each other when fastening thefilter holder, the filter holder is not pushed in sufficiently. Be sure to push it in completly.
WARNING
Install the filter properly before use.
Do not use the dust collector with the filter removed or at an erroneously installed position. Avoid
the use of a torn filter, too. Otherwise, dust particles can enter into the motor and can result in
the machine failure and damage of motor by a fire.
NOTE It is recommended that some spare filters be stocked since the filters are expendable.
Try to maintain the performance of the filter and restore its suction capacity by brushing
and washing the filter with water and eliminating clogged dust particles as illustrated
below. After washing the filter with water, dry it completely in the shade before use.
Depending on the kind of dust particles, think about how to treat waste fluid while
washing the filter with water.
Filter* Scrape out dust particles
using a brush and othereffective tools.
* Wash off dust particles underrunning water.
Filter
AFTER USE
4 Drain-out of air filter
WARNING
Wear protective glasses during work since
drain liquid scatters.
After completion of work or before
working, perform drain-out of the air
filter more than once a day on a
periodic basis with the drain’s upper
limit mark.
5 Drain-out of air tank
NOTE After completion of work,
make sure that the fan
rotation is stopped.
Remove the air tube, and
perform drain-out after
discharging compressed
air filled in the air tank.
When removing the 1/4
plug, provide a tray
underneath, and then
perform drain-out.
Drain-out is necessary on a
periodic basis of more than
once a year.
Caution must be exercised
not to expose the filter to
the drained liquid.
Drain-out button
Air tube
Air filter
Drain’s upperlimit mark
Pulse pipe
1/4 plug
Air tank
11
[ ]1 2 3 4
8 7 6 5
OPERATING DISPLAY SELECTION SWITCH
When the main power switch is turned ON, the following character or numeric appears on the digital display.
Abbreviation of model name (RG700YA) is displayed
Two seconds later
Then, press the button, and when the dust collector starts to operate, the current filter’s differential
pressure value is displayed.
For individual names of switches, refer to Page 4.
1 Operating filter’s differential pressure switch
Press the filter’sdifferential pressureswitcha lamp on the upperleft of the switchlights up
Display the current filter’sdifferential pressurevalue.
Press (starts to set)
Press the set-adjusting switch(up/down) andadjust the setvalue.
The set value changes.
The numeric of set valueflashes, indicating comple-tion of registration.
Press(setting is completed)
12
⟨Filter’s differential switch⟩
The filter gets clogged gradually as it continues to suck in dust articles. The degree of clogging exhibited
in numerical values is the filter’s differential pressure.
This dust collector is designed to apply pulses to the filter automatically upon reaching the differential
pressure values set in advance and to discard the dust particles adhered on the filter.
The differential pressure values set at the time of factory shipment is 180 mm H2O. To change the set
value, follow the instructions described below.
When registration is completed, the set value flashes and notifies the user to that effect.
Several seconds after the completion of registration, the digital display automatically turns to filter’s
differential pressure display.
If dust particles of particularly high adhesive power are sucked in, lower the set value and eliminate
the dust particles at the earliest opportunity.
Display the current setvalue.It is possible to set thevalue, ranging from 50to 300 mm H2O.[ ]
1 2
3 Using filter inspection hours
This switch displays how many hours are still left till filter inspection.
1 2
1 2 3 4
8 7 6 5Set/register
Press the set-adjusting switch(up/down), andadjust the setvalue.
The set value changes.
The numeric of the set valueflashes, indicating comple-tion of registration.
Press(to complete setting)
The remaining hours till dustdiscard is displayed.
Press the dust-discardswitcha lamp on the upper leftof the switch lights up
Display the currenthours till dust discard.
Press (to start setting)
When registration is completed, the set value flashes and notifies the user to that effect.
In several seconds after the completion of registration, the digital display automatically turns to the
filter’s differential pressure display.
The number of hours till filterinspection is displayed.
13
[ ]
OPERATING DISPLAY SELECTION SWITCH
2 Using dust-discard hours
This switch displays remaining hours till dust discard.
Although this is set for 25 hours at the time of factory shipment, lower the setting to the smaller number
of hours in case there are many dust particles accumulated.
To display the remaining hours till dust discard, carry out the following.
NOTE If the alarm reset switch is pressed while the remaining hours till dust discard are being
displayed, the remaining hours are reset, returning to the initial set value. Be careful.
Try to discard the dust particles accumulated in the dust box at the earliest opportunity. The
accumulated dust particles can result in the reduced air volume due to the clogged filter,
declined suction power, etc.
To change the remaining hours till dust discard, carry out the following.
Display the current setvalue.It is possible to set,ranging from 1 to 99hours.
Press the filter inspectionswitcha lamp on the upper leftof the switch lights up[ ]
Press the dust discardswitcha lamp on the upper leftof the switch lights up[ ]
[ ][ ]
1 2
4 Using air volume switch
To display the air volume, carry out the following.
Press the air volume switcha lamp on the upper left ofthe switch lights up
Air volume is displayed.
14
[ ]
NOTE Note that there can be instances where some errors occur in the displayed values.
1 2 3 4
8 7 6 5Press the set-adjusting switch(up/down), andadjust the setvalue.
The set value changes.
The numeric of the set valueflashes, indicating comple-tion of registration.
Press(to complete setting)
Press (to start setting)Display the currenthours till filterinspection.
Press the filter inspectionswitcha lamp on the upper leftof the switch lights up
When registration is completed, the set value flashes and notifies the user to that effect.
In several seconds after the completion of registration, the digital display automatically turns to the
filter’s differential pressure display.
[ ]
Display the current setvalue.It is possible to set,ranging from 10 to1000 hours.[ ]
NOTE If the alarm reset switch is pressed while the hours till filter inspection are being displayed, the
remaining hours are reset, returning to the initial set value. Be careful.
The hours till filter inspection are set to 200 hours at the time of factory shipment, but it is necessary
to inspect torn parts and holes of the filter depending on the accumulated quantity and the kind of dust
particles.
To change the hours till filter inspection, carry out the following.
INDICATION OF ALARM LAMPA
bn
orm
al
lam
p
1 Reverse rotation of fan .......... When a motor rotates reversely, the motor automatically stops,and a fan-reverse-rotation lamp lights up. Refer to the proceduresmentioned in Page 8 and re-connect the power supply cords.
2 Overload .................................. When a motor is overloaded, the motor automatically stops andat the same time an overload lamp lights up. If the dust collectoris operated with an open-phase connection, the overload lamplights up.
3 Pressure sensor ...................... A pressure-sensor lamp lights up when there is some abnormalityin the piping of the pressure sensor.
When abnormality lamps of 2 and 3 above light up, consult with your dealer.
1 Filter inspection ...................... A filter-inspection lamp lights up when the set inspection time forthe filter comes. When the filter’s differential set value is notrestored even after the dust-eliminating operation of 4 - 5 cyclesis continuously performed by pulse application, a filter-inspectionlamp lights up.
2 Dust discard ............................ Upon reaching the set dust-discard hour, a dust-discard lamplights up.
15
Even when an abnormality lamp lights up, the dust collector can be operated again if the alarm reset
switch is pressed and the operation switch is turned ON after the cause of abnormality is removed. Even
when an inspection lamp lights up, if the alarm reset switched is pressed, the dust collector can be
operated again.
If the alarm reset switch is pressed while the hours till filter inspection and the hours till dust discard are
being displayed, the remaining hours are reset, returning to the initial set value. When the alarm reset
switch is pressed before an inspection lamp lights up, do not forget the inspection work for the filter and
the job to discard the dust particles from the dust box.
Insp
ecti
on
lam
p
RG700YA
Motor (KW) 3.7
Maximum air volume (m3/min.) 70
Maximum static pressure (mm H2O) 300
Filter area (m2) 18
Dust elimination system Clog-detecting automatic pulse jet
Compressed air pressure (kg/cm2) 4~7
Standard consumption of compressed air (Nr /min.) 28
Volume of dust box ( r ) 46
Diameter of hose (mm) 250
Length of power supply cord (m) 5
Weight (kg) 280
<Approximate dimensions>1000 × 700 × 1730Width x Depth x Height (mm)
NOTE Note that the maximum air volume and static pressure differ largely depending on the
length and thickness of the pipes to be connected.
ASK YOUR DEALER FOR INFORMA-TION ABOUT THESE PARTS
AFTER-SALE SERVICE
For abnormality during use
WARNING
Before you ask for repair, read this instruction manual carefully and check according to the table
below. If abnormality still persists after checking and taking necessary measures, do not try to repair
by yourself and be sure to consult with your dealer.
Contact your dealer for any questions about troubles.
Check and remedy
Check if the power supply cord is properly connected. If an overload lamp lights up, turn OFF the main power switch
immediately and ask your electrician for a complete checkup asit may be caused by open-phase operation or other faults.
Remove two M6 bolts, roll the controller box to your front, andyou will find the electromagnetic switch.
Check if a thermal relay of the electromagnetic switch isfunctioning. If the thermal relay is functioning, find out why it isfunctioning and remove the cause, and press a red reset buttonprovided on the electromagnetic switch.
Get rid of dust particles in the filter and discard the dust particlesfrom the dust box.
If dust particles are clogged up in the hose and wire nets of thedischarge port, eliminate them.
Check if there are some defective joints (gaps, etc.) on the hoseand if the front door is firmly fixed with clamps.
Check if the filter is not broken or if it is installed properly.
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