DEAN PUMP® SERIES FW 1200
Instruction Manual MC 1.4.48
DO NOT INSTALL, OPERATE, OR SERVICE THIS PUMP BEFORE READING THE ENTIRE MANUAL
MET-PROA Met-Pro Fluid Handling Technologies Business
Combining the Resources of Dean Pump, Fybroc & Sethco
Global Pump Solutions
Vertical/Horizontal Water Pumps
INDEX
Product Inspection and Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Receiving Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Mechanical Design Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Standard Materials of Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Allowable Working Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Application and Reapplication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Casing Foot Mounting and Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Suction and Discharge Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Allowable Piping Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Pump Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Mechanical Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Starting the Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Pump Start-Up Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Ordering Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Pump Section Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10FW 1200 Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10FW 1200 Horizontal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Disassembly and Reassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Reassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
The Products of Dean Pump are subject to thorough and rigorousquality control and inspection procedures throughout the whole ofthe manufacturing process to assure proper operation in full confor-mity with established performance standards. On completion ofinspection, each unit is sprayed internally with rust inhibitor (if material is subject to atmospheric corrosion), sealed against the
PRODUCT INSPECTION AND TEST
Read the instruction manual completely before installing, filling,operating, or maintaining this equipment.Obtain, read and heed the MSDS (Material Safety Data Sheet) for thefluids being handled before attempting to fill, operate or maintain thisequipment. Obtain instructions from the Safety Engineer responsible foryour facility before performing any work on the pumping equipmentand systems.Proper storage while not in use and proper installation and startup areessential for successful pump operation. Misuse or improper storage,installation or operation of pumps may result in serious loss or damage.Dean Pump is not responsi ble for any loss or damage resulting fromcauses beyond its control, and is not liable for charges for work per-formed or materials furnished to repair such loss or damage.All installation, operation, and maintenance must be done by thoroughly qualified personnel in strict accordance with this manualand must comply with all local, state and Federal codes. Only Deanauthorized service parts must be used in the repair of these pumps.RECEIVING PUMPWhen the pump is received from the transportation company it shouldbe promptly inspected for damage and such damage noted on the billof lading before it is signed. Claims for shipping damage must be filedagainst the carrier. Care must be exercised in unloading and handling the pump.
STORAGEPumps must be properly covered and protected against mois ture, dirt,and physical damage during storage prior to installa tion.If prolonged storage is anticipated, do the following:
1) Seal the suction and discharge opening of the pump with ablind flange, gasket, and bolts.
2) Apply a heavy protective coating to all exposed machined surfaces. A rust preventive must be used to protect all steeland iron parts.
3) Rotate the pump shaft “by hand” each month. Wear heavygloves when rotating the shaft, to protect your hands.
When you are ready to place the pump in service;1) Remove and discard the suction and discharge bolts, blind
flange, and gasket. WARNING:Be sure that there is nothing remaining in the pump that could react withthe liquid that will be pumped or that would have an excessive vaporpressure at the system operating temperature.
2) Remove the “storage” protective coating from all surfaces of the pump.
Pumps must also be protected from moisture, dirt, and physical damage, during and after installation while the system is being completed. Pumps “stored” on their foundations must be completelychecked for proper installation prior to start-up. Care in storage and installation will preserve the built-in quality of eachDean Product.
WARNING
HAZARDOUS SITUATIONS MAY OCCUR UNLESS THIS EQUIPMENT IS APPLIED, INSTALLED, OPERATED,AND MAINTAINED BY THOROUGHLY QUALIFIED PERSONNEL IN STRICT ACCORDANCE WITH THEINSTRUCTION MANUAL AND ALL APPLICABLE DRAWINGS AND CODES.
entrance of dirt, and tagged with a signed certificate of inspection prior to shipment. Each pump when shipped is ready to perform the service for which it was designed with minimum maintenance and expense if properly installed and operated in accordance with the instructions furnished.
1
2
VERTICAL/HORIZONTAL, SINGLE STAGE, END SUCTION, ENCLOSED IMPELLER CENTRIFUGAL PUMPS
THESE PUMPS ARE DESIGNED SPECIFICALLY FOR USE WITH WATER
MECHANICAL DESIGN SPECIFICATIONS
PUMP TYPE FW1220 FW1280
Direction of Rotation (Viewed from Motor End) CW CCW
Casing Thickness, Minimum 3/8” (10 mm) 1/2” (13 mm)
Corrosion Allowance 1/8” (3 mm) 1/8” (3 mm)
Impeller BalanceStandard
Optional ExtraSingle Plane
DynamicSingle Plane
Dynamic
FlangesANSI Class
FacingFinish
300Raised Face
125 Ra
300Raised Face
125 Ra
Suction Pressure, Maximum 50 PSIG (345 kPa) 50 PSIG (345 kPa)
Power Rating, Maximum@1750 RPM@1150 RPM
40 hp (30 kW)15 hp (11 kW)
125 hp (93 kW) 30 hp (22 kW)
Seal Chamber DimensionsLength (Depth)
Inside Diameter (Bore Dia.)3” (76 mm)
5 3/8” (137 mm)3.75” (95 mm)6” (152 mm)
Material Class 22 (Ductile Iron) 22 (Ductile Iron)
Maximum Working Pressure 100 PSIG (690 kPa) 100 PSIG (690 kPa)
Pumping TemperatureMinimumMaximum
-20ºF @ 100 PSIG (-29ºC @ 690 kPa) 250ºF @ 100 PSIG (121ºC @ 690 kPa)
-20ºF @ 100 PSIG (-29ºC @ 690 kPa) 250ºF @ 100 PSIG (121ºC @ 690 kPa)
Hydrostatic Test Pressure 150 PSIG (1034 kPa) 150 PSIG (1034 kPa)
3
VERTICAL/HORIZONTAL, SINGLE STAGE, END SUCTION, ENCLOSED IMPELLER CENTRIFUGAL PUMPS
THESE PUMPS ARE DESIGNED SPECIFICALLY FOR USE WITH WATER
(1) Cast Iron(2) AISI 1020(3) Bronze ASTM B584
(4) ANSI 304 S/S(5) ANSI 316 S/S(6) Ductile Iron – ASTM A536
(7) Teflon(8) Viton® Elastomer(9) Buna-N Rubber
Viton® is a registered Trademark of E.I. DuPont Co.Teflon® is a registered Trademark of E.I. DuPont Co.
STANDARD MATERIALS OF CONSTRUCTION
ALLOWABLE WORKING PRESSURE VS. PUMPING TEMPERATUREPUMPING TEMPERATURE – DEGREES C.
WORK
ING PRESSURE - kPa
WORK
ING PRESSURE - PSIG
PUMPING TEMPERATURE – DEGREES F.
-46 -26 14 34 54 74 94 114 134
300250200150100500-50
140
120
100
80
60
40
20
0
1000
800
600
400
200
0
-6
FW 6X8X12.5
FW 4X6X10
PART # PART NAME FW 1220/1280 CLASS 223 Impeller Bronze (3)4 Impeller Key Steel (2)5 Casing D.I. (6)5A Casing Drain Plug Steel (2)5B Suction Gauge Plug Steel (2)5C Jack Screw Steel (2)5D Casing Bolts Steel (2)7 Cradle C.I. (1)7A Cradle Bolts Steel (2)10 Shaft Extension 316SS (4)10A Shaft Fasteners Steel (2)12 Impeller Nut/Bolt Steel (2)12A Impeller Washer Steel (2)22 Backhead D.I. (6)22A Backhead Bolts Steel (2)22B Vent Plug Steel (2)33 Bent Steel Base (Horizontal Option) Steel (2)56 Casing Foot (Horizontal Only) C.I. (1)56A Casing Foot Bolts (Horizontal Only) Steel (2)75 Snap Ring Steel (2)77 Casing Gasket Teflon (7)95A Mechanical Seal Stationary Ceramic95B Mechanical Seal Rotary S/S, Carbon & Viton (8)98 Shaft Guard Steel (2)98A Shaft Guard Bolts Steel (2)431 Strainer (Vertical Only) 304SS (4)432 Strainer Tank (Vertical Only) C.I. (1)432A Tank Gasket (Vertical Only) Buna-N (9)432B Tank Plug (Vertical Only) Steel (2)433 Strainer Tank Cover (Vertical Only) Steel (2)433A Cover Bolts (Vertical Only) Steel (2) / Cast Iron (1)433B Cover Gasket (Vertical Only) Buna-N (9)
Obtain MSDS data sheets for all liquids (from the manufacturers ofthose liquids) being used with the pump, and heed all cautions.Always wear the appropriate protective apparel when working onor around the pumping equipment. Safety glasses with side shields,heavy work gloves (use insulated work gloves when handling hotitems), steel-toed shoes, hard hat, and any other protective gear asneeded for protection. Use lifting devices, manufactured expresslyfor the purpose of lifting, to move the pumping machinery. Do notattempt to lift the assembly or its components manually. Use onlydevices with lifting capabilities in excess of the weight of the unitbeing lifted. Inspect straps, chains, hooks, etc. for damage and lift-ing capability before use.APPLICATION AND REAPPLICATIONAt the time of installation, the equipment received should havealready been selected for the service required. You must read thepaperwork for the installation and check the serial number of thepump to assure that you are installing the correct pump into the service for which it was selected.Many pumps look identical from the outside but can be made of different materials and/or be constructed differently inside. Do not transfer an existing pump to any other service conditionsuntil you have thoroughly reviewed the pump construction, materi-als, sizing, sealing, pressure containing capability, head/capacitycapability, and temperature capability with respect to the requiredservice. Consult your Dean Pump sales engineer with all the servicerequirements and a full description of the existing pump (includingthe serial number), seal, and sub-systems so that we can assist youin a successful reapplication.MOUNTING AND ALIGNMENTThe sequence of mounting which must be observed for proper pump mounting is:
1) Place tank (432) or baseplate (33), with pump and drivermounted thereon, on the pump foundation.
2) Use wedges under the tank (432) or baseplate (33), at eachfoundation bolt, to properly support and level the unit.Check this with a spirit level. Pull down the mounting boltnuts tightly and recheck for level. Correct if necessary.
3) Install “new” gaskets, of the correct material for the service,and the correct size per ASME B16.20, or ASME B16.21at the suction and the discharge flanges of the pump. Useonly new gaskets.Connect the suction and discharge piping without forcingthe piping into position. See “Suction and Discharge Piping”below. The pipe flanges must line up with the pump flanges “freely”.Install a “new” bolt, of the correct size per ASME/ANSIB16.5, and of the correct material per ASME/ANSI B16.5,in every bolt hole. Tighten all bolts evenly. Use only newuncorroded fasteners.
WARNING:Strain caused by “forcing”, improper flange bolting, and/or mis-alignment may cause failure of the pumping unit, flanges, pipingand/or fluid (pumpage) release which could cause personal injury,death, and/or damage to this and/or other equipment.
WARNING:Make sure that all piping is installed into its correct connection.Installation of a pipe into an incorrect location could result in an explosion.Install pressure relief valves in any cavities that could be subjectedto pressures in excess of the allowable working pressure.
INSTALLATION
SUCTION AND DISCHARGE PIPINGSuction and discharge nozzle sizes of Dean pumps are selected forproper performance of the pumping unit and are not intended todetermine the suction and discharge pipe sizes. Pipe sizes must bedetermined by the user based on the system requirements.Suction piping should have a minimum friction loss and thus shouldbe as short and straight as possible with a pipe diameter as largeas economically feasible for the flow rate handled. Suction piping should never be smaller in diameter than the suctionnozzle size. When the suction piping is larger than the suction nozzle size an eccentric reducer is required at the suction flangeand must be installed with the taper located on the underside toeliminate air or vapor pockets. The section of piping attached to thesuction flange of the pump should be straight for a length of eightpipe diameters or more.Discharge piping may be the same size as, larger, or smaller thanthe discharge nozzle as the system flow may demand.In the vertical orientation the discharge of the pump can be oriented every 30 degrees to accommodate the desired pipingarrangement. See figure “FW 1200 Rotation Views” on page 5.
FLOW
FLOW
FLOW
FLOW
TYPICAL PUMP PIPING
4
FW 1200 VERTICAL ORIENTATION
FW 1200 HORIZONTAL ORIENTATION
ALLOWABLE PIPING LOADS FOR FW 1200SERIES PUMPS
NOZZLE STRESSThe maximum stress developed in the pump flanges by the appliednozzle loads combined with internal pressure will not exceed26,250 PSI tensile and 13,125 shear. This in accordance with theallowable stress for ASTM A351 (A 744/743) - Grade CF8M perASME Boiler and Pressure Vessel Code.The suction nozzle stress is calculated using three-dimensional stressis calculated based on the method contained in the ASME Boilerand Pressure Vessel Code, 1983 Edition, Section III, NC 3653, dueto its complex geometry.
PRESSURE-TEMPERATUREThe temperature shown for a corresponding allowable nozzle loadis the temperature of the pressure-containing components of thepump. In general, this temperature is the same as that of the contained liquid.Use of a pressure rating as specified in ANSI/ASME B16.5 corresponding to a temperature other than that of the contained liquid is the responsibility of the user, subject to the requirements ofthe applicable code or regulation.Low-temperature and high-temperature considerations addressed inANSI/ASME B16.5 should be examined.
PUMP NOZZLE LOADSLoads given in Table 2 are applicable for ASME B73.1M pumpsconstructed of ASTM A 743/744 - Grade CF8M (Type 316SS)operated between -20°F and 100°F.For an individual force or moment or for a combination of morethan one force and/or moment, pumps must be capable of satisfactory operation when subjected to loads shown in Table 2(adjusted if applicable), while meeting the criteria of Equation Set 1. Each load in the Table 2 is such that it is the maximum valuefor that particular load regardless of whether or not any other external loads are applied.When applying loads, the absolute value of any individual loadmust not exceed the value given in Table 2.
TEMPERATURE AND MATERIAL ADJUSTMENT FACTORSAdjustment of allowable load values using Table 1 is required if anyof the following occur:
a) Temperature is above 100°F.b) The pump material construction is not ASTM A744 -
Grade CF8M.
ADJUSTMENT FACTOR BASISAdjustment factors are determined by taking the ANSI/ASME B16.5 Class 300 pressure-temperature rating of ASTM A 351 - GradeCF8M Class 300 at 100°F as specified in ANSI/ASME B16.5.In the case of ductile cast iron, adjustment factors were determinedby taking the ANSI/ASME B16.42 Class 300 pressure-tempera-ture ratings and dividing by the pressure-temperature rating ofASTM A 351 - Grade CF8M Class 300 at 100°F as specified inANSI/ASME B16.5.
ADJUSTMENT FACTORSFor temperatures above 100°F and/or the use of a material otherthan ASTM A 744 - Grade CF8M, the loads in Table 2 should bereduced by multiplying them by the proper adjustment factor fromTable 1.For intermediate temperatures not shown in Table 1, linear interpolation is permitted.
TERM DEFINITIONS (REFER TO FIG. 1)
Fx = Applied force on X-Axis on suction or discharge nozzle Mx = Applied moment on X-Axis on suction or discharge nozzle
Fy = Applied force on Y-Axis on suction or discharge nozzle My = Applied moment on Y-Axis on suction or discharge nozzle
Fz = Applied force on Z-Axis on suction or discharge nozzle Mz = Applied moment on Z-Axis on suction or discharge nozzle
5
FW 1200 ROTATION VIEWS
TABLE 2
The allowable nozzle loads for Table 2 are based on the following formula:
Fxs≤ 1.0, ≤ 1.0,Fx max
Fys
Fy max
Fzsx
Fz max ≤ 1.0, ≤ 1.0,≤ 1.0,Mys
My max
Mzs
Mz max
Mxs
Mx max
Fxd≤ 1.0, ≤ 1.0,Fx max
Fyd
Fy max
Fzd
Fz max ≤ 1.0, ≤ 1.0,≤ 1.0,Myd
My max
Mzd
Mz max
Mxd
Mx max
Y
MATERIAL GROUP NO.1 1.1 2.1 2.2 2.3 2.4 2.8 3.1 3.2 3.4 3.5 3.7 3.8
TEMP.(°F)
DUCTILECASTIRON
CARBONSTEEL
AUSTENITIC STEELS NICKEL AND NICKEL ALLOYS
TYPE304
TYPE316
TYPE304L
TYPE316L
TYPE321
C-4MUCU
ALLOY20 NICKEL MONEL INCONEL HAST B. HAST C.
-20-100 0.89 1 1 1 0.83 1 1 0.83 0.5 0.83 1 1 1200 0.83 0.94 0.83 0.86 0.7 0.98 1 0.77 0.5 0.74 0.93 1 1300 0.78 0.91 0.74 0.78 0.63 0.83 1 0.73 0.5 0.69 0.89 1 1400 0.73 0.88 0.65 0.72 0.58 0.69 0.98 0.67 0.5 0.67 0.85 0.98 0.98500 0.69 0.83 0.6 0.67 0.53 0.64 0.92 0.65 0.5 0.66 0.83 0.92 0.92600 0.65 0.76 0.58 0.63 0.5 0.6 0.84 0.63 0.5 0.66 0.8 0.84 0.84650 0.63 0.74 0.57 0.62 0.49 0.6 0.82 0.63 – 0.66 0.78 0.82 0.82700 – 0.74 0.56 0.6 0.48 0.58 0.79 0.62 – 0.66 0.77 0.79 0.79
TABLE 1
PUMP LUBRICATIONBEARINGSThe FW pump is a closed coupled pump that relies on the radial and thrust bearings of the motor. Refer to themotor manufacturer for the recommended lubricant and maintenance frequency of the motor bearings.MECHANICAL SEALThe FW Pumps are arranged with a mechanical face seal (95A & 95B) that was specifically selected for thesealing of water. The mechanical seal faces are lubricated by the liquid being pumped – it is therefore necessaryto have liquid at the seal faces at all times. To accomplish this, the mechanical seal cavity of the pump must bevented when filling the pump with liquid to allow the seal cavity to also fill with liquid.
EQUATION SET 1
6
PUMPGEOMETRY ALLOWABLE SUCTION LOADS ALLOWABLE DISCHARGE LOADS
PUMPTYPE
PUMPSIZE
FORCES (LB.) MOMENTS (FT.-LB.) FORCES (LB.) MOMENTS (FT.-LB.)
FXSMAX
FYSMAX
FZSMAX
MXSMAX
MYSMAX
MZSMAX
FXDMAX
FYDMAX
FZDMAX
MXDMAX
MYDMAX
MZDMAX
FW1220 4X6X10 2700 1350 1500 1300 1100 1100 1400 1350 3250 1200 1500 690
FW1280 6X8X12.5 3500 3180 2000 1500 1170 1170 1500 3000 3500 1250 2840 2840
Z
Z
XZ
X
Y
X Y
X
Z
Y
FW 1200 HORIZONTAL LOAD
FW 1200 VERTICAL LOAD
7
It is important that a pump should never be subjected to thermalor pressure shock. The liquid should therefore be allowed to flow into the casing slowly. A centrifugal pump should never bestarted until all the parts are up to the temperature of the liquidto be pumped.
FILLINGWARNING: Before filling the pump with liquid, check to see that all possibleleak locations are sealed. See that all of the connections into thepressure containing cavity are sealed or connected to a related piping system that also has all possible leak paths sealed. Do notplug unused cavities, as this could develop dangerous pressurebuild-up. Use a wrench on all bolted joints to apply torque toassure that all gaskets are sealed in a tight joint. Check to seethat all threaded pipe connections are also tight enough to sealthe Liquid pressure that will be applied when the system is started.WARNING: Filling directions below refer to venting of “air” to the atmos-phere, but dependent upon the physical properties of the liquidintended to be pumped, temperature, pressure, and other variables related to the system and its operational requirements,this may not be allowed by federal or local regulations, or maynot be acceptable for whatever other reasons. Consult your plantor corporate safety engineer for instruction on possible requiredprocedures for the specific liquid, operating conditions and legal requirements.
When the source of the liquid to be pumped is below atmos-pheric pressure or located below the pump, the filling may be ac complished in any of several ways, three of which are listedbelow:1) An exhauster may be connected to the discharge piping
between the pump and the discharge isolation valve. Withthe discharge isolation valve closed and the suction valveopen, the air can be exhausted from the pump and the suction piping. When all the air has been removed, closethe suction valve, remove the exhauster, plug the access portwhere the exhauster was connected, and then open the discharge valve. Remove the seal vent plug from the side ofthe backhead, refer to the drawings on pages 9, 10 & 11.Allow the air to flow from this port until the pumpage startsto flow.
2) With a foot valve installed in the suction piping, the pumpmay be filled with pumpage introduced somewhere abovethe pump in the discharge piping. A foot valve may createextensive losses and therefore must be allowed for in calculating the available NPSH. When the pump is filled,plug the port through which you were filling. Remove theseal vent plug from the top of the backhead, refer to thedrawings on pages 9, 10 & 11. Allow the air to flow fromthis port until the pumpage starts to flow.
3) A vacuum pump (preferably a wet vacuum pump) may beused for evacuating air from the pump and piping. The vacuum pump should be connected as is the exhauster covered in No. 1 above and the procedure is the same.
When the source of the liquid to be pumped is above atmos-pheric pressure or above the pumps discharge flange, the pumpmay be filled by venting through a bleed-off line to atmosphere.When the source of the liquid is above the pumps dischargeflange the venting could be back to the suction source, insteadof to atmosphere. When all of the air has been expelled throughthe bleed-off, seal it. Remove the seal vent plug from the side ofthe backhead, refer to the drawings on pages 9, 10 and 11.Allow the air to flow from this connection until the pumpagestarts to flow. It is most important to check the direction of rotation of the pumpbefore allowing the pump to come up to speed. To check rotationdirection, push the starting button and instantly push the stop button. This will allow the motor to turn over a few revolutionsand the direction of rotation to be observed. A direction ofrotation arrow is shown on the front of the pump casing. If rotation is incorrect, change the wiring connections and recheckrotation. Operating the pump in reverse rotation may causeextensive damage.WARNING: Lock-out the power to the driver (motor, turbine, engine, etc.)
OPERATING
WARNING:Before starting the unit, see that all personnel are a safe distanceaway from all possible hazards, that all sub-systems are connected and operating, that all debris has been removed, thatthe shaft guard is securely in place, and that the pump is full of liquid.Do not operate this pump at shut-off (no flow) as an explosionmay result. This can occur with any liquid, even “cold water”. WARNING:Do not operate a pump at a low flow condition, unless provisionhas been made to prevent dangerous heat build up within thepump casing. The liquid in the pump will heat up and this mayresult in high pressure in the pump in a short time. Such pres-sure may result in a rupture of the pressure-containing parts andcause severe hazard to personnel and/or damage to the system.A centrifugal pump should never be run without liquid in the casing. Extensive damage may result, particularly to the bearingor the mechanical seal. Vent or fill the pump seal chamber throughthe seal vent connection to provide lubrication to the mechanicalseal faces.A centrifugal pump should be started with the suction valve fullyopen and the discharge valve opened a slight amount. Start the pump.As soon as the pump is up to speed, the discharge valve must beopened slowly. A centrifugal pump cannot be operated with the discharge valve closed without heating up dangerously.During the first several minutes of operating watch the pumpcarefully for overheating, vibration, and other abnormal condi-tions. If trouble develops, stop the pump at once and correct the problem.Restart the pump.
STARTING THE PUMP
8
Read instruction manual thoroughly and understand it.
DEAN PUMP® SERIES FW 1200 VERTICAL/HORIZONTAL WATER PUMPSOPERATIONAL START-UP CHECKLIST
Review pump order head sheet for the service rating of the pump and any special features.
Check to see that the seal chamber has been vented.
Check all piping connections making certain that they are both tightand in the proper places.
Check the electrical connections to the driver.
Bump the motor starting button to check motor rotation. Operating the pump in reverserotation may cause extensive damage. If the rotation is incorrect, connect the wiring forproper rotation and recheck.
Rotate the pump shaft by hand to be sure that there is no binding orrubbing within the pump or driver. Wear heavy gloves to protect yourhands. Correct any problems before proceeding.
Remove all dirt, waste, tools, and construction debris from the area.
These points must be checked after pump installation and before starting up the pump.
Check to see that the shaft guard (98) is fastened securely in place.
9
To avoid prolonged down time and facilitate rapidrepair of damaged pump parts, Dean recommendsthat the pump user maintain a minimum stock ofspare parts. If the pump service is critical, a spareparts stock is even more important to the user. Consult your Dean representative who will assist youin selecting your spares stock.
ORDERING SPARE PARTSSpare part orders will be handled with a minimumdelay if the following information is furnished by thecustomer with the order:1) Give the pump serial number and size. These may be
found on the pump name plate. The serial number isalso stamped on the suction flange of the pump.
2) Give the part name, part number, and material ofpart. These should agree with the standard parts list.
3) Give the quantity of each part required.4) Give complete shipping instructions.
SPARE PARTS
10
7A
98A
433A433B
431
432
432B
5D
5A
5
12
77
3
95C
95A
10A
22
22A
98
433
7
5C
5B
95C
75
7A
5 5B
10A
7712A 12
33
56A
43
98
98A
107 22A 95E
22
22B
95D95B95A
432A
22B
95B
95D
75
4
12A
95E
5A56
FW 1200 VERTICALEXPLODED VIEW
FW 1200 HORIZONTALEXPLODED VIEW
* For a list of part numbers, please refer to the Standard Materials of Construction table on page 3, or to the tables adjacent to the sectional assembly drawings on pages 10-11.
OPTIONAL PROTECTION SYSTEMSSECTIONAL ASSEMBLY DRAWINGS
FW 1200 SERIES VERTICAL SECTIONAL DRAWING: FW1200-C1
10
Part # Part Name
StandardMaterial
3 Impeller Bronze
4 Impeller Key Steel
5 Casing Ductile Iron
5A Casing Drain Plug Steel
5B Discharge Gauge Plug Steel
5C Jack Screw Steel
5D Casing Bolts Steel
7 Cradle Cast Iron
7A Cradle Bolts Steel
10 Shaft Extension 316SS
10A Shaft Fasteners Steel
12 Impeller Bolt Steel
12A Impeller Washer Steel
22 Backhead Ductile Iron
22A Backhead Bolts Steel
22B Backhead Vent Plug Steel
75 Snap Ring Steel
77 Casing Gasket Teflon
95A Mech Seal Stationary Ceramic
95B Mech Seal Rotary Carbon
95C Spring 316SS
95D Retainer 316SS
95E Bellows Viton
98 Shaft Guard Steel
98A Shaft Guard Bolts Steel
431 Strainer 304SS
432 Strainer Tank Cast Iron
432A Tank Gasket Buna-N
432B Tank Drain Plug Steel
433 Strain Tank Cover Steel
433A Cover Bolts Steel/Cast Iron
433B Cover Gasket Buna-N
10A95A
95B
95E
95C
95D
7
5
22B
77
75
98
98A
5C
7A
22A
22
10
12A
12
5A
433A
433
433B432B
432
432A
5B
3
4
431
5D
SECTIONAL ASSEMBLY DRAWINGS
FW 1200 SERIES HORIZONTAL SECTIONAL DRAWING: FW1200-C2
11
10A 10 5C 98 22A 7A 22 56A 5633
5A
12A
12
4
75
3
5B
95D95C95B95A 22B
5
7 77
95E
98A
Part # Part Name
StandardMaterial
3 Impeller Bronze
4 Impeller Key Steel
5 Casing Ductile Iron
5A Casing Drain Plug Steel
5B Discharge Gauge Plug Steel
5C Jack Screw Steel
7 Cradle Cast Iron
7A Cradle Bolts Steel
10 Shaft Extension 316SS
10A Shaft Fasteners Steel
12 Impeller Bolt Steel
12A Impeller Washer Steel
22 Backhead Ductile Iron
22A Backhead Bolts Steel
Part # Part Name
StandardMaterial
22B Vent Plug Steel
33 Bent Steel Baseplate Steel
56 Casing Foot Cast Iron
56A Casing Foot Bolts Steel
75 Snap Ring Steel
77 Casing Gasket Teflon
95A Mech Seal Stationary Ceramic
95B Mech Seal Rotary Carbon
95C Spring 316SS
95D Retainer 316SS
95E Bellows Viton
98 Shaft Guard Steel
98A Shaft Guard Bolts Steel
WARNING:Work must be performed only by thoroughly trained and qualified personnel to assure quality repair and to reduce thepossibilities of injury to personnel and/or damage to equipment.If you do not have personnel who are capable of safe qualityrepair of this equipment, we advise you to return the equipmentto DEAN PUMP to be repaired.When it is necessary to open the pump and/or the pumping system the fluid will be exposed to the atmosphere and personnel in the area. For the safety of all involved, the risk ofexposure of personnel to the hazards of the pumpage can bereduced by flushing the entire system with a compatible, non-toxic, non-hazardous, stable fluid before opening the pumpor the system. In all cases, where the system is flushed or not, usethe utmost care around the pumpage and the pumping system. Always wear the appropriate protective apparel when workingon or around the pumping equipment. Use only top quality tools.a) Stop the pump. Turn off the power supply (electricity) to the
pump driver (motor) and lock the switching device so that itcan not be restarted. Tag the switching device so that noone will attempt to restart the unit.
b) Close the suction and discharge valves completely to isolatethe pump from the system. Lock the valves in the closed posi-tion and tag them so that no one will attempt to open them.
c) Turn off, lock out, and tag all sub-systems and auxiliaryequipment and auxiliary supply lines to isolate the pumpingunit from any and all power, energy, and/or fluids.
WARNING:Do not attempt to perform any work on the unit until you areconfident that the pump and its contents have been stabilized atambient temperature, and atmospheric pressure.d) Remove the shaft guard. e) Carefully bleed off any pressure remaining in the pump.
Pressure remaining in the pump will be dependent upon thepressure in the system when the pump was stopped; the quality, type, and condition of the isolation valves; the thermalexpansion values of the fluid and the pump material; and thechange in the vapor pressure of the fluid between the temperature at the time the isolation valves were closed andthe ambient temperature. After the initial rush of fluid from thepump relieves the pressure, the system drain valve can beopened further to speed the draining operation. If the system was constructed without any drain connections, itwill be necessary to consult the designers of the system for safedraining procedures.
WARNING:Even though it might appear that the cavity being drained has completely drained, be extremely careful about opening the systemand/or opening the pump. If something solid in the pumpagemoves to the vicinity of the drain connection, it could seal-off the drain and maintain pressure in the cavity thought to have beendrained. It is also possible that the isolation valves are not sealingand therefore allowing liquid to flow from the system into the pump.
f) Loosen the cradle bolts (7A) only one full turn. Then use jack-screws (two, 180° apart) through the flange of the cradle to“break” the gasket seal. If fluid and/or pressure remains in thepump, it will spray out now. Do not proceed with disassemblyuntil leakage ceases completely. If leakage does not cease, the isolation valves may not be sealing. Note that if the pump waspurchased without a drain, the pump will contain fluid whichwill flow out at the time the nuts or capscrews are loosenedand the gasket seal is “broken”.
g) Remove the cradle bolts (22A), and using mechanical liftingapparatus to support the weight, pull the rotating unit from thecasing (5). Un-screw the two jack-screws until they are not protruding through the “casing side” of the cradle (7) flange.
h) Flush the wetted parts, now exposed, with a compatible, non-toxic, non-hazardous, stable liquid.
i) Remove the gasket (77) from the face of the casing (5) or back-head (22) dependent on which one the gasket may haveadhered to. The type of gasket and material of constructionwill vary with service requirements. Attack by prying and then,if necessary, layering off the old gasket with a sharp scraper,attempting to remove it in the largest possible pieces.
j) Inspect the inside of the casing (5) and strainer tank (432)for any signs of wear, corrosion or any other damage. If the casing or strainer tank (432) needs to be removed,remove the bolts from the suction and discharge flanges.The casing or strainer tank (432) can now be removed.Remove the suction and discharge flange gaskets using theprocedure as in paragraph “i” above. (Note: Horizontal configuration does not include the strainer tank).
k) The rotating assembly of the pump can now be moved to amore convenient location for further disassembly. Use mechan-ical lifting equipment to move assemblies and components.
DISASSEMBLY PROCEDURETo further dismantle the pump, perform the following steps in thesequence shown:WARNING:Use only high quality tools.Obtain MSDS data sheets for all liquids (from the manufacturers ofthose liquids) being used with the pump, and heed all cautions.Flush parts as disassembled to remove hazardous residue fromthe pumpage and/or sub-system fluids.Wear protective equipment as advised at the beginning of this section.Use mechanical lifting equipment to lift assemblies and components.Do not apply heat to parts to assist in disassembly. Do not attempt to drill, saw or otherwise cut parts to remove them. Do not hammer on any parts.
DISASSEMBLY AND ASSEMBLY PROCEDURES
12
a) Remove the impeller bolt (12) while holding the flats on theshaft extension (10) to prevent rotation. Remove the impellerwasher (12A). Slide the impeller (3) off of the shaft extension (10) (Note: Two crowbars placed between theimpeller (3) and the backhead (22) may be needed in orderto slide the impeller (3) off the shaft extension (10)). Remove the impeller key (4).
b) Remove the snap ring (75) from the shaft extension (10)using snap ring pliers. The seal retainer (95D) and spring(95C) should now be removed.
c) Remove the backhead bolts (22A) using caution to not allowthe backhead (22) to drop onto the shaft extension (10).Next, pull the backhead (22) away from the cradle (7). Themechanical seal rotary (95B) and bellows (95E) will comewith the backhead (22) as it is removed. Use caution to notdrop the seal components as the backhead (22) is removed.
d) The stationary portion of the mechanical seal (95A) ispressed into the now removed backhead (22). Use a punchand from the backside of the backhead (22) remove the stationary seal component (95A). (use caution)
e) If the motor is to be replaced remove the bolts fastening thecradle (7) to the motor. If the motor is to be reused leave thecradle (7) intact and move onto section (f).
f) Inspect the shaft extension (10) for excessive wear and scoring. If the shaft extension (10) does not need to bereplaced, tear down is complete. If the shaft extensionneeds replaced continue to section (g).
g) Remove all four of the shaft fasteners (10A). Slide the shaftextension (10) off of the motor shaft. Tear down is now complete.
REASSEMBLY PROCEDUREWARNING:Use only high quality tools.Wear protective equipment as advised at the beginning of thissection.Use mechanical lifting equipment to lift assemblies and components.Do not hammer on any parts.Do not attempt to manufacture parts or modify Dean Pump partsin any manner.Replace all gaskets, seals, bearings, and lubricants. Replace all partsthat have worn corroded, eroded, or otherwise deteriorated.Use only Dean Pump of Met-Pro Corporation parts.To reassemble the pump, perform the following steps:a) Clean all parts, thoroughly inspect them, and replace where
necessary.b) Measure the depth of the shaft extension (10) bore then take
that length and mark it on the motor shaft. Apply a lubricantto the motor shaft, careful not to wipe off the mark on themotor shaft. Two of the four shaft extension fasteners (10A)will be the same width as the keyway in the motor shaft.Thread those two fasteners into the shaft extension (10) sothey protrude into the ID of the extension, but not deeperthat the depth of the keyway of the motor shaft. Use the fasteners to align the shaft extension with the motor shaftand slide the extension on. Verify the shaft extension meetsthe mark applied to the motor shaft.
c) Insert the other two extension fasteners (10A) and tighten allfour fasteners alternately to the below torque specification.
d) Slide the cradle (7) over the shaft extension (10) and fastenit to the motor verifying it is completely seated into the cradle bore.
e) Apply P-80 lubricant or equivalent to the backhead (22) stationary seal bore and the stationary seal (95A) OD andO-Ring. Gently press the stationary seal into the backhead(22) until it is fully seated using caution to not damage theseal face.
f) Slide the backhead (22) over the shaft extension (10) andseat it against the cradle. Fasten the backhead to the cradle using the backhead bolts (22A) and align the OD of the cradle and backhead before lightly tightening thebackhead bolts (22A).
g) Apply P-80 lubricant or equivalent to the shaft extension(10) OD and the bellows (95E) of the mechanical seal.Slide the rotary (95B) and bellows (95E) assembly of themechanical seal onto the shaft extension until it is flatagainst the stationary face of the mechanical seal.
h) Slide the spring (95C) and retainer (95D) onto the shaftextension (10). Take the snap ring (75), using snap ring pliers to expand it, and slide it over the shaft extension (10)until it snaps into the groove of the shaft extension (10).The snap ring (75) should be seated on the shaft extension(10) against the retainer (95D) and compressing the spring(95C) against the rotary (95B) and bellows (95E) assemblyof the mechanical seal.
i) Insert the impeller key (4) into the shaft extension (10) keyway and slide the impeller (3) onto the shaft extension.(Note: It is acceptable to lightly tap the impeller (3) onto theshaft extension (10) with a rubber mallet).
j) Replace the casing gasket (77) and slide the completedrotating assembly into the casing (5). Fasten the cradle bolts(7A) to the casing and fully tighten the backhead bolts(22A).
k) Rotate the pump using the flats on the shaft extension (10)to verify the pump rotates smoothly.
DISASSEMBLY AND ASSEMBLY PROCEDURES
13
Screw Nominal Size (in.) Tightening Torque (in. - lbs.)
1/4 77.9
5/16 156
3/8 273
7/16 428
1/2 615
5/8 1315
3/4 2150
Read the instruction manual completely, before installing, filling, operating, or maintaining this equipment.Obtain, read, and heed the MSDS ( Material Safety Data Sheet) for the fluids being handled before attempting tofill, operate or maintain this equipment.Obtain instructions from the Safety Engineer responsible for your facility before performing any work on the pump-ing equipment and systems.APPLICATION AND REAPPLICATION - At the time of installation, the equipment received should have already beenselected for the service required. You must read the paperwork for the installation and check serial number of thepump to assure that you are installing the correct pump into the service for which it was selected.Many pumps look identical from the outside but can be made of different materials and/or be constructed differentlyinside. Personal injury, death, equipment damage, product (pumpage) damage, and/or product loss could occur if theincorrect pump is installed.Do not transfer an existing pump to any other service conditions until you have thoroughly reviewed the pump construction, materials, sizing, sealing, pressure containing capability, head/capacity capability, and temperature capability with respect to the required service. Consult your DEAN PUMP sales engineer with all theservice requirements and a full description of the existing pump (including the serial number), seal, and sub-systemsso that we can assist you in a successful reapplication.INSTALLATION - Always wear the appropriate protective apparel when working on or around the pumping equipment.Safety glasses with side shields, heavy work gloves (use insulated work gloves when handling hot items), steel toedshoes, hard hat, and any other protective gear as needed for protection. One example of other gear would be breathing apparatus when working near toxic materials.Use lifting devices, manufactured expressly for the purpose of lifting, to move the pumping machinery. Do not attemptto lift the assembly or its components manually. Use only devices with lifting capabilities in excess of the weight ofthe unit being lifted. Inspect straps,chains, hooks, etc. for damage and lifting capability before use. Lift only at thecenter of gravity.Personal injury, death, and/or equipment damage could occur if good lifting practices are not used.Install the equipment on a properly designed and built foundation. Assure that the driver (motor, turbine,or engine)shaft is properly aligned to the pump shaft.Connect the suction and discharge piping without forcing the piping into position. The pipe flanges must line upwith the pump flanges “freely”. Strain caused by “forcing” and/or misalignment may cause failure of the pumpingunit, flanges, and/or the piping resulting in fluid (pumpage) release. This could cause personal injury, death and/ordamage to this and/or other equipment.Install a “new” bolt, of the correct size per ASME/ANSI B16.5 and the correct material per ASME/ANSI B16.5,in every bolt hole. Tighten all bolts evenly. Use only new uncorroded fasteners.Improper flange bolting may cause failure of the pumping unit, flanges, piping, and/or fluid (pumpage) releasewhich could cause personal injury, death, and/or damage to this and/or other equipment.Connect all other (auxiliary) piping necessary for safe and successful operation of the equipment in the specific ser-vice conditions of the application. Make sure that all piping is installed into it’s correct connection. Installation of apipe into an incorrect location could result in an explosion and personal injury or death as well as damage to thisand/or other equipment.Install pressure relief valves in any cavities that could be subjected to pressures in excess of the allowable workingpressure of that cavity. Explosion, personal injury, death, and/or damage to this and/or other equipment may occurif pressure exceeds allowable.Recheck the alignment between the driver (motor, turbine, or engine) and pump shafts. Installation of piping may haveforced the pump out of alignment. If so, correct the piping to remove the distorting load.Check to be certain that the shaft coupling spacer is not installed, and then gently bump the motor starter to checkthe rotational direction of the motor. If this is not in the direction of rotation required for the pump, make the neces-sary corrections.Lock-out the power to the driver (motor, turbine, engine, etc.)Install the shaft coupling spacer. Be sure that you install all the retaining devices and bolts and that they are tight.Read and comply with the coupling manufacturer’s instructions. Personal injury, death, and/or equipment damagecould occur if the coupling spacer is not properly installed. Remove all debris and tools from the area near the shaftsand the shaft coupling. Do this to assure that nothing is caught and thrown by the rotating parts when the pump isstarted. Bolt the coupling guard securely to the baseplate, checking to assure that it is not contacting any parts thatwill rotate when the pump is started.FILLING - Before filling the pump with liquid, check to see that all possible leak locations are sealed. See that all ofthe connections into the pressure containing cavity are sealed or connected to a related piping system that also hasall possible leak paths sealed. Do not plug unused jacket cavities, as this could develop dangerous pressure build-up. Use a wrench on all bolted joints to apply torque to assure that all gaskets are sealed in a tight joint. Check tosee that all threaded pipe connections are also tight enough to seal the liquid pressure that will be applied whenthe system is started.OPERATING - Before starting the unit, see that all personnel are a safe distance away from all possible hazards,that all sub-systems are connected and operating, that all debris has been removed, that the shaft coupling guardis securely in place, and that the pump is full of liquid.Do not operate this pump at shut-off (no flow) as an explosion may result. This can occur with any liquid, even “coldwater”. Personal injury, death, equipment damage, and/or loss of product (pumpage) is likely to occur. If your sys-tem is operated where it is possible for all outlets for the discharge from the pump to be closed while the pump isstill operating, a modification of the system needs to be made to assure a continual flow of pumpage through thepump. Note that some people have a belief that a bypass line from the discharge side of the pump to the suctionside of the pump will relieve this problem, this is “NOT TRUE”; DO NOT ATTEMPT THIS.MAINTENANCE, DISASSEMBLY AND REPAIR - Work must be performed only by thoroughly trained and qualifiedpersonnel to assure quality repair and to reduce the possibilities of injury to personnel and/or damage to equip-ment. If you do not have personnel who are capable of safe quality repair of this equipment, we advise you to returnthe equipment to DEAN PUMP to be repaired.When it is necessary to open the pump and/or the pumping system, the fluid will be exposed to the atmosphereand personnel in the area. For the safety of all involved, the risk of exposure of personnel to the hazards of thepumpage can be reduced by flushing the entire system with a compatible non-toxic, non-hazardous,stable liquidbefore opening the pump or the system. In all cases, where the system is flushed or not, use the utmost care aroundthe pumpage and the pumping system.Always wear the appropriate protective apparel when working on or around the pumping equipment. Safety glass-es with side shields, heavy work gloves (use insulated work gloves when handling hot items), steel-toed shoes, hardhat, and any other protective gear as needed for protection. One example of other gear would be breathing apparatus when working near toxic materials.Use only top quality tools.
Stop the pump. Turn off the power supply (electricity, steam, etc.) to the pump driver (motor, turbine, engine, etc.)and lock the switching device so that it cannot be restarted. Tag the switching device so that no one will attempt torestart the unit.Close the suction and discharge valves completely to isolate the pump from the system. Lock the valves in the closedposition and tag them so that no one will attempt to open them.Turn off, lock out, and tag all sub-systems and auxiliary equipment and auxiliary supply lines to isolate the pump-ing unit from any and all power, energy, and/or fluids.Do not attempt to perform any work on the unit until you are confident that the pump and its contents have beenstabilized at ambient temperature, and atmospheric pressure.Put on protective wear to protect human tissue from attack by the fluids contained in the pump and any sub-systems,and from any vapors or fumes that could possibly be released from these fluids. This could mean breathing apparatus,face shields, heavy long sleeve rubber gloves, rubber apron, hood, and possibly more, dependent of course on theproperties of the fluids involved and the installed drain and vent piping arrangement. Personal injury and/or deathcan occur if adequate precautions are not taken with regard to the fluid, the installation, and the possibilities of therelease of fluid, vapors, and/or fumes.Remove the coupling guard. Remove the coupling spacer.Drain all the fluids from the auxiliary sub-systems (lubrication, cooling, heating, seal barrier, etc.) that are connect-ed to the pump. Drain each fluid into a separate container. Use caution required for each fluid after reading theMSDS (Material Safety Data Sheet) for each.Flush each sub-system with a compatible, non-toxic, non-hazardous, stable liquid. Drain into individual containersfor each fluid. Disconnect and remove all auxiliary piping.Carefully bleed off any pressure remaining in the pump. Pressure remaining in the pump will be dependent uponthe pressure in the system when the pump was stopped; the quality, type, and condition of the isolation valves; thethermal expansion valves of the fluid and the pump material; and the change in the vapor pressure of the fluidbetween the temperature at the time the isolation valves were closed and the ambient temperature. Bleeding mustbe through a valved drain line piped to a closed container mounted lower than the pump. The container must bearranged with a relief passage to some point where pressure and fumes will not be harmful to personnel. The container must also have a level device so that determination can be made that sufficient fluid has been drained toempty the pump cavity and the volume of fluid that was contained in the run of suction and discharge pipe betweenthe isolation valves and the pump. After the initial rush of fluid from the pump relieves the pressure, the drain valvecan be opened further to speed the draining operation. When fluid quits running into the drain tank, gauge the volume to see if it is sufficient to have fully drained the contents of the pump and the suction and discharge pipesbetween the isolation valves.If the system was constructed without any drain connections, it will be necessary to consult the designers of the systemfor safe draining procedures.Now drain any small piping, that contains the fluid pumped, from all low points, into the same container used to drainthe pump. Do not drain any other fluids (different than the pumpage) into this container as they may not be compatible. Personal injury, death, and/or equipment damage could occur.Even though it might appear that, the cavity being drained has completely drained, be extremely careful about opening the system and/or opening the pump. If something solid in the pumpage moves to the vicinity of the drainconnection, it could seal-off the drain and maintain pressure in the cavity thought to have been drained. It is also possible that the isolation valves are not sealing and therefore allowing liquid to flow from the system into the pump.Personal injury, death, and/or equipment damage may occur if intense caution is not exercised.Because of the above possibility, when you loosen the gasketed joint at the back of the casing (5), loosen the bolts ornuts only one full turn, and then use jack screws to break the gasket seal. If fluid and/or pressure remains in the pump,it will spray out now. Use extreme caution, wearing protective gear, to avoid injury. Do not proceed with disas-sembly until leakage ceases completely. If leakage does not cease, the isolation valves may not be sealing. Notethat if the pump was purchased with out a drain, the pump will contain fluid which will flow out at the time the boltsare loosened and the gasket seal is broken. When you open the pump, the fluid will be exposed to the atmosphere and personnel in the area. For the safety ofall involved, the risk of exposure can be reduced by flushing the cavity that was just drained, with a compatible non-toxic, non-hazardous, stable liquid, before disassembling the pump.Remove the casing bolts or nuts and using mechanical lifting apparatus to support the weight, pull the rotating unitfrom the casing.Flush the wetted parts now exposed with compatible, non-toxic, non-hazardous, stable liquid.Remove the gasket from the face of the casing (5) or the bearing housing (26) dependent on which one the gasket mayhave adhered to. The type of gasket and material of construction will vary with service requirements. Attack by pryingand then, if necessary, layering off the old gasket with a sharp scraper, attempting to remove it in the largest possiblepieces. Wear heavy leather, long sleeve work gloves when using the scraper. Wet the gasket before and during thescraping operation to reduce the possibility of fibers becoming airborne. Wear a respirator during this operation anduntil all debris has been disposed of in a plastic bag. Remove all of the gasket material down to clean metal surfaceson both parts that contacted the gasket. Place all of the gasket residue in a plastic bag, seal the bag and dispose of itin compliance with all government requirements.The rotating assembly of the pump can now be moved to a more convenient location for further disassembly. Useonly high quality tools. Flush parts as disassembled to removed hazardous residue from the pumpage and/or sub-system fluids.Wear protective equipment as advised at the beginning of these warnings.Use mechanical lifting equipment to lift assemblies and components.Do not apply heat to parts to assist in disassembly. Explosion could occur causing personal injury, death, and/ordamage to equipment.Do not attempt to drill, saw, or otherwise cut parts to remove them. Explosion and/or fuming could occur causingpersonal injury, death, and/or equipment damage.Do not hammer on any parts. Personal injury and/or damage to equipment may occur.Do not attempt to manufacture parts or modify Dean Pump parts in any manner. Death, personal injury, and/ordamage to equipment may occur.One example of the above would be overboring the seal chamber, which removes metal that is required to containfluids. Removal of this metal reduces the pressure containing capability of the part, and may create a leak paththrough the part.Replace all gaskets, seals, bearings, and lubricants. Replace all parts that have worn, corroded, eroded, or other-wise deteriorated.Use only Dean Pump Met-Pro Corporation parts.
HAZARDOUS SITUATIONS MAY OCCUR UNLESS THIS EQUIPMENT IS APPLIED, INSTALLED, OPERATED, AND MAINTAINED BY THOROUGHLY QUALIFIED PERSONNEL IN STRICT ACCORDANCE WITH THE INSTRUCTION MANUAL AND ALL APPLICABLE DRAWINGS AND CODES.
READ WARNINGS
6040 Guion Road • Indianapolis, IN 46254(317) 293-2930 • FAX: (317) 297-7028E-mail: [email protected] • Web Site: www.deanpump.com
MET-PROA Met-Pro Fluid Handling Technologies Business
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Global Pump Solutions
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