Gorman-Rupp Pumps 02K52-B 1255789 and up User Manual 28 Pages
advertisement
C OM-01163-02
June 11, 2002
Rev. B 06‐05‐2013
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
0 SERIES PUMP
MODEL
02K52-B
THE GORMAN‐RUPP COMPANY MANSFIELD, OHIO
www.grpumps.com
GORMAN‐RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA
Printed in U.S.A.
2009 The Gorman‐Rupp Company
Register your new
Gorman‐Rupp pump online at www.grpumps.com
Valid serial number and e‐mail address required.
RECORD YOUR PUMP MODEL AND SERIAL NUMBER
Please record your pump model and serial number in the spaces provided below. Your Gorman‐Rupp distributor needs this information when you require parts or service.
Pump Model:
Serial Number:
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE I - 1
SAFETY ‐ SECTION A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE A - 1
INSTALLATION - SECTION B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE B - 1
Pump Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREINSTALLATION INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POSITIONING PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUCTION AND DISCHARGE PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connections to Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUCTION LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strainers
Sealing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Line Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISCHARGE LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siphoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coupled Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V‐Belt Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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OPERATION - SECTION C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE C - 1
PRIMING
STARTING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rotation
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lines With a Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lines Without a Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liquid Temperature And Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strainer Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Vacuum Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STOPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BEARING TEMPERATURE CHECK
Cold Weather Preservation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE C - 1
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TROUBLESHOOTING - SECTION D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE D - 1
PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE D - 3 i
TABLE OF CONTENTS
(continued)
PUMP MAINTENANCE AND REPAIR ‐ SECTION E . . . . . . . . . . . . . . . . .
PAGE E - 1
STANDARD PERFORMANCE CURVE
PARTS LISTS:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY
Pump Disassembly
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impeller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shaft and Bearing Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shaft and Bearing Reassembly and Installation
Seal Reassembly and Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impeller Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Final Pump Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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PAGE E - 8 ii
0 SERIES OM-01163
INTRODUCTION
This Installation, Operation, and Maintenance manual is designed to help you achieve the best performance and longest life from your Gorman‐
Rupp pump.
This pump is an 0 Series, closed impeller, self‐prim ing centrifugal model, designed with straight‐in suction, without a suction check valve. It is de signed to handle clear liquids containing specified entrained solids. The basic material of construc tion for wetted parts is gray iron, with cast iron im peller and steel shaft.
If there are any questions regarding the pump or its application which are not covered in this man ual or in other literature accompanying this unit, please contact your Gorman‐Rupp distributor, or write:
The Gorman‐Rupp Company
P.O. Box 1217
Mansfield, Ohio 44901-1217
Phone: (419) 755-1011 or:
Gorman‐Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
Phone: (519) 631-2870 cording to all national, local and industry stan dards.
The following are used to alert maintenance per sonnel to procedures which require special atten tion, to those which could damage equipment, and to those which could be dangerous to personnel:
Immediate hazards which WILL result in severe personal injury or death. These instructions describe the procedure re quired and the injury which will result from failure to follow the procedure.
Hazards or unsafe practices which
COULD result in severe personal injury or death. These instructions describe the procedure required and the injury which could result from failure to follow the procedure.
For information or technical assistance on the pow er source, contact the power source manufactur er's local dealer or representative.
Because pump installations are seldom identical, this manual cannot possibly provide detailed in structions and precautions for every aspect of each specific application. Therefore, it is the re sponsibility of the owner/installer of the pump to ensure that applications not addressed in this manual are performed only after establishing that neither operator safety nor pump integrity are com promised by the installation. Pumps and related equipment must be installed and operated ac
Hazards or unsafe practices which COULD result in minor personal injury or product or property damage. These instructions describe the requirements and the possi ble damage which could result from failure to follow the procedure.
NOTE
Instructions to aid in installation, operation,and maintenance, or which clarify a procedure.
INTRODUCTION PAGE I - 1
0 SERIES OM-01163
SAFETY ‐ SECTION A
This information applies to 0 Series en gine driven pumps. Gorman‐Rupp has no control over or particular knowledge of the power source which will be used.
Refer to the manual accompanying the power source before attempting to be gin operation.
This manual will alert personnel to known procedures which require spe cial attention, to those which could damage equipment, and to those which could be dangerous to personnel.
How ever, this manual cannot possibly antici pate and provide detailed instructions and precautions for every situation that might occur during maintenance of the unit. Therefore, it is the responsibility of the owner/maintenance personnel to ensure that only safe, established main tenance procedures are used, and that any procedures not addressed in this manual are performed only after estab lishing that neither personal safety nor pump integrity are compromised by such practices.
This pump is designed to handle clear liquids containing specified entrained solids. Do not attempt to pump volatile, flammable or corrosive materials, or any liquids which may damage the pump or endanger personnel as a result of pump failure.
Use lifting and moving equipment in good repair and with adequate capacity to prevent injuries to personnel or dam age to equipment. Suction and dis charge hoses and piping must be re moved from the pump before lifting.
Before attempting to open or service the pump:
1. Familiarize yourself with this man ual.
2. Disconnect or lock out the power source to ensure that the pump will remain inoperative.
3. Allow the pump to completely cool if overheated.
4. Check the temperature before opening any covers, plates, or plugs.
5. Close the suction and discharge valves.
6. Vent the pump slowly and cau tiously.
7. Drain the pump.
SAFETY
After the pump has been installed, make certain that the pump and all piping or hose connections are tight, properly supported and secure before operation.
Do not operate the pump against a closed discharge valve for long periods of time. If operated against a closed dis charge valve, pump components will deteriorate, and the liquid could come to a boil, build pressure, and cause the pump casing to rupture or explode.
PAGE A - 1
OM-01163 0 SERIES
Overheated pumps can cause severe burns and injuries. If overheating of the pump occurs:
1. Stop the pump immediately.
2. Ventilate the area.
3. Allow the pump to completely cool.
4. Check the temperature before opening any covers, plates, gauges, or plugs.
5. Vent the pump slowly and cau tiously.
6. Refer to instructions in this manual before restarting the pump.
Never run this pump backwards. Be cer tain that rotation is correct before fully engaging the pump.
Pumps and related equipment must be in stalled and operated according to all na tional, local and industry standards.
Do not remove plates, covers, gauges, pipe plugs, or fittings from an over heated pump. Vapor pressure within the pump can cause parts being disen gaged to be ejected with great force. Al low the pump to cool before servicing.
PAGE A - 2 SAFETY
0 SERIES OM-01163
INSTALLATION - SECTION B
Review all SAFETY information in Section A.
Since pump installations are seldom identical, this section offers only general recommendations and practices required to inspect, position, and ar range the pump and piping.
configuration, and priming must be tailored to the specific application. Since the pressure supplied to the pump is critical to performance and safety, be sure to limit the incoming pressure to 50% of the maximum permissible operating pressure as shown on the pump performance curve.
Most of the information pertains to a standard static lift application where the pump is positioned above the free level of liquid to be pumped.
For further assistance, contact your Gorman‐Rupp distributor or the Gorman‐Rupp Company.
Pump Dimensions
If installed in a flooded suction application where the liquid is supplied to the pump under pressure, some of the information such as mounting, line
See Figure 1 for the approximate physical dimen sions of this pump.
OUTLINE DRAWING
Figure 1. Pump Model 02K52-B
PREINSTALLATION INSPECTION
The pump assembly was inspected and tested be fore shipment from the factory. Before installation, inspect the pump for damage which may have oc curred during shipment. Check as follows: a. Inspect the pump and engine for cracks, dents, damaged threads, and other obvious damage.
b. Check for and tighten loose attaching hard ware. Since gaskets tend to shrink after dry ing, check for loose hardware at mating sur faces.
c. Carefully read all tags, decals, and markings on the pump assembly, and perform all duties indicated.
d. Check levels and lubricate as necessary. Re fer to LUBRICATION in the MAINTENANCE
INSTALLATION PAGE B - 1
OM-01163 0 SERIES
AND REPAIR section of this manual and per form duties as instructed.
e. If the pump and engine have been stored for more than 12 months, some of the compo nents or lubricants may have exceeded their maximum shelf life. These must be inspected or replaced to ensure maximum pump serv ice.
If the maximum shelf life has been exceeded, or if anything appears to be abnormal, contact your
Gorman‐Rupp distributor or the factory to deter mine the repair or updating policy. Do not put the pump into service until appropriate action has been taken.
POSITIONING PUMP
Use lifting and moving equipment in good repair and with adequate capacity to prevent injuries to personnel or dam age to equipment. Suction and dis charge hoses and piping must be re moved from the pump before lifting.
Lifting
Use lifting equipment with a capacity of at least 280 pounds (127 kg.) . The pump weighs approxi mately 56 pounds (25 kg.) , not including the weight of any customer installed options. Cus tomer installed equipment such as suction and dis charge piping must be removed before attempting to lift.
The pump assembly can be seriously damaged if the cables or chains used to lift and move the unit are improperly wrapped around the pump.
Mounting
Locate the pump in an accessible place as close as practical to the liquid being pumped. Level mount ing is essential for proper operation.
PAGE B - 2
The pump may have to be supported or shimmed to provide for level operation or to eliminate vibra tion.
SUCTION AND DISCHARGE PIPING
Pump performance is adversely effected by in creased suction lift, discharge elevation, and fric tion losses. Contact the factory to be sure your overall application allows pump to operate within the safe operation range.
Materials
Either pipe or hose maybe used for suction and discharge lines; however, the materials must be compatible with the liquid being pumped. If hose is used in suction lines, it must be the rigid‐wall, rein forced type to prevent collapse under suction. Us ing piping couplings in suction lines is not recom mended.
Line Configuration
Keep suction and discharge lines as straight as possible to minimize friction losses. Make mini mum use of elbows and fittings, which substan tially increase friction loss. If elbows are necessary, use the long‐radius type to minimize friction loss.
Connections to Pump
Before tightening a connecting flange, align it ex actly with the pump port. Never pull a pipe line into place by tightening the flange bolts and/or cou plings.
Lines near the pump must be independently sup ported to avoid strain on the pump which could cause excessive vibration, decreased bearing life, and increased shaft and seal wear. If hose‐type lines are used, they should have adequate support to secure them when filled with liquid and under pressure.
Gauges
Most pumps are drilled and tapped for installing discharge pressure and vacuum suction gauges.
If these gauges are desired for pumps that are not tapped, drill and tap the suction and discharge lines not less than 18 inches (457 mm) from the suction and discharge ports and install the lines.
Installation closer to the pump may result in erratic readings.
INSTALLATION
0 SERIES OM-01163
SUCTION LINES
To avoid air pockets which could affect pump prim ing, the suction line must be as short and direct as possible. When operation involves a suction lift, the line must always slope upward to the pump from the source of the liquid being pumped; if the line slopes down to the pump at any point along the suction run, air pockets will be created.
Fittings
Suction lines should be the same size as the pump inlet. If reducers are used in suction lines, they should be the eccentric type, and should be in stalled with the flat part of the reducers uppermost to avoid creating air pockets. Valves are not nor mally used in suction lines, but if a valve is used, install it with the stem horizontal to avoid air pock ets.
Strainers
If a strainer is furnished with the pump, be certain to use it; any spherical solids which pass through a strainer furnished with the pump will also pass through the pump itself.
If a strainer is not furnished with the pump, but is installed by the pump user, make certain that the total area of the openings in the strainer is at least three or four times the cross section of the suction line, and that the openings will not permit passage of solids larger than the solids handling capability of the pump.
This pump is designed to handle up to 3/8‐inch
(9,53 mm) diameter spherical solids.
Sealing
Since even a slight leak will affect priming, head, and capacity, especially when operating with a high suction lift, all connections in the suction line should be sealed with pipe dope to ensure an air tight seal. Follow the sealant manufacturer's rec ommendations when selecting and applying the pipe dope. The pipe dope should be compatible with the liquid being pumped.
Suction Lines In Sumps
If a single suction line is installed in a sump, it should be positioned away from the wall of the sump at a distance equal to 1 1/2 times the diame ter of the suction line.
If there is a liquid flow from an open pipe into the sump, the flow should be kept away from the suc tion inlet because the inflow will carry air down into the sump, and air entering the suction line will re duce pump efficiency.
If it is necessary to position inflow close to the suc tion inlet, install a baffle between the inflow and the suction inlet at a distance 1‐1/2 times the diameter of the suction pipe. The baffle will allow entrained air to escape from the liquid before it is drawn into the suction inlet.
If two suction lines are installed in a single sump, the flow paths may interact, reducing the efficiency of one or both pumps. To avoid this, position the suction inlets so that they are separated by a dis tance equal to at least 3 times the diameter of the suction pipe.
Suction Line Positioning
The depth of submergence of the suction line is critical to efficient pump operation.
Figure 2 shows recommended minimum submergence vs. veloc ity.
NOTE
The pipe submergence required may be reduced by installing a standard pipe increaser fitting at the end of the suction line. The larger opening size will reduce the inlet velocity. Calculate the required submergence using the following formula based on the increased opening size (area or diameter).
INSTALLATION PAGE B - 3
OM-01163 0 SERIES
Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity
DISCHARGE LINES head, gradually close the discharge throttling valve before stopping the pump.
Siphoning
ALIGNMENT
Do not terminate the discharge line at a level lower than that of the liquid being pumped unless a si phon breaker is used in the line. Otherwise, a si phoning action causing damage to the pump could result.
Valves
If a throttling valve is desired in the discharge line, use a valve as large as the largest pipe to minimize friction losses. Never install a throttling valve in a suction line.
The alignment of the pump and its power source is critical for trouble‐free mechanical operation. In either a flexible coupling or V‐belt driven system, the driver and pump must be mounted so that their shafts are aligned with and parallel to each other. It is imperative that alignment be checked after the pump and piping are installed, and before opera tion.
NOTE
Check Rotation , Section C, before final alignment of the pump.
With high discharge heads, it is recommended that a throttling valve and a system check valve be in stalled in the discharge line to protect the pump from excessive shock pressure and reverse rota tion when it is stopped.
If the application involves a high discharge
When mounted at the Gorman‐Rupp factory, driver and pump are aligned before shipment. Misalign ment will occur in transit and handling. Pumps must be checked and realigned before operation.
Before checking alignment, tighten the foundation bolts. The pump casing feet and/or pedestal feet, and the driver mounting bolts should also be tightly secured.
PAGE B - 4 INSTALLATION
0 SERIES OM-01163
When checking alignment, disconnect the power source to ensure that the pump will remain inoperative.
Adjusting the alignment in one direction may alter the alignment in another direc tion. check each procedure after altering alignment.
Coupled Drives
When using couplings, the axis of the power source must be aligned to the axis of the pump shaft in both the horizontal and vertical planes.
Most couplings require a specific gap or clearance between the driving and the driven shafts. Refer to the coupling manufacturer's service literature.
Align spider insert type couplings by using calipers to measure the dimensions on the circumference of the outer ends of the coupling hub every 90 .
The coupling is in alignment when the hub ends are the same distance apart at all points (see Fig ure 3A).
Figure 3B. Aligning Non‐Spider Type Couplings
Align non‐spider type couplings by using a feeler gauge or taper gauge between the coupling halves every 90 . The coupling is in alignment when the hubs are the same distance apart at all points (see
Figure 3B).
Check parallel adjustment by laying a straightedge across both coupling rims at the top, bottom, and side. When the straightedge rests evenly on both halves of the coupling, the coupling is in horizontal parallel alignment. If the coupling is misaligned, use a feeler gauge between the coupling and the straightedge to measure the amount of misalign ment.
V‐Belt Drives
When using V‐belt drives, the power source and the pump must be parallel. Use a straightedge along the sides of the pulleys to ensure that the pul leys are properly aligned (see Figure 3C). In drive systems using two or more belts, make certain that the belts are a matched set; unmatched sets will cause accelerated belt wear.
Figure 3A. Aligning Spider‐Type Couplings
INSTALLATION
MISALIGNED:
SHAFTS
NOT PARALLEL
MISALIGNED:
SHAFTS
NOT IN LINE
ALIGNED: SHAFTS
PARALLEL AND
SHEAVES IN LINE
Figure 3C. Alignment of V‐Belt Driven Pumps
PAGE B - 5
OM-01163 0 SERIES
Tighten the belts in accordance with the belt manu facturer's instructions. If the belts are too loose, they will slip; if the belts are too tight, there will be excessive power loss and possible bearing failure.
Select pulleys that will match the proper speed ra tio; over speeding the pump may damage both pump and power source.
Do not operate the pump without the guard in place over the rotating parts .
exposed rotating parts can catch cloth ing, fingers, or tools, causing severe in jury to personnel.
DRIVE BELT TENSIONING
General Rules of Tensioning
For new drive belts, check the tension after 5, 20 and 50 hours of operation and re‐tension as re quired (see the following procedure for measuring belt tension). Thereafter, check and re‐tension if re quired monthly or at 500 hour intervals, whichever comes first.
Ideal drive belt tension is the lowest tension at which the belt will not slip under peak load condi tions. Do not over‐tension drive belts. Over‐ten sioning will shorten both drive belt and bearing life.
Under‐tensioning will cause belt slippage. Always keep belts free from dirt, grease, oil and other for eign material which may cause slippage.
PAGE B - 6 INSTALLATION
0 SERIES OM-01163
OPERATION - SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and decals attached to the pump.
coming liquid to evacuate the air. After the pump and piping system have completely filled, evacu ate any remaining air pockets in the pump or suc tion line by loosening pipe plug or opening bleeder valves.
Once the pump casing has been filled, the pump will prime and reprime as necessary.
This pump is designed to handle clear liquids containing specified entrained solids. Do not attempt to pump volatile, corrosive, or flammable materials, or any liquids which may damage the pump or endanger personnel as a result of pump failure.
PRIMING
Install the pump and piping as described in IN
STALLATION . Make sure that the piping connec tions are tight, and that the pump is securely mounted. Check that the pump is properly lubri cated (see LUBRICATION in MAINTENANCE
AND REPAIR ).
This pump is self priming, but the pump should never be operated unless there is liquid in the pump casing.
Never operate this pump unless there is liquid in the pump casing. The pump will not prime when dry. Extended operation of a dry pump will destroy the seal assembly.
Add liquid to the pump casing when:
1. The pump is being put into service for the first time.
2. The pump has not been used for a consider able length of time.
3. The liquid in the pump casing has evapo rated.
When installed in a flooded suction application, simply open the system valves and permit the in
OPERATION
After filling the pump casing, reinstall and tighten the fill plug. Do not attempt to operate the pump unless all connect ing piping is securely installed. Other wise, liquid in the pump forced out un der pressure could cause injury to per sonnel.
To fill the pump, remove the pump casing fill cover or fill plug in the top of the casing, and add clean liquid until the casing is filled. Replace the fill cover or fill plug before operating the pump.
STARTING
Rotation
The correct direction of pump rotation is indicated by an arrow on the pump body, and on the accom panying decal. If the pump is operated in the wrong direction, the impeller could become loos ened from the shaft and aseriously damage the pump.
If an electric motor is used to drive the pump, re move V‐belts, couplings, or otherwise disconnect the pump from the motor before checking motor rotation. Operate the motor independently while observing the direction of the motor shaft, or cool ing fan.
If rotation is incorrect on a three‐phase motor, have a qualified electrician interchange any two of the three phase wires to change direction. If rotation is incorrect on a single‐phase motor, consult the liter
PAGE C - 1
OM-01163 0 SERIES ature supplied with the motor for specific instruc tions.
OPERATION
Overheating can occur if operated with the valves in the suction or discharge lines closed. Operating against closed valves could bring the liquid to a boil, build pressure, and cause the pump to rup ture or explode. If overheating occurs, stop the pump and allow it to cool before servicing it. Refill the pump casing with cool liquid.
Lines With a Bypass
Close the discharge throttling valve (if so equipped) so that the pump will not have to prime against the weight of the liquid in the discharge line. Air from the suction line will be discharged through the bypass line back to the wet well during the priming cycle. When the pump is fully primed and liquid is flowing steadily from the bypass line, open the discharge throttling valve. Liquid will then continue to circulate through the bypass line while the pump is in operation.
Lines Without a Bypass
Open all valves in the discharge line and start the power source. Priming is indicated by a positive reading on the discharge pressure gauge or by a quieter operation. The pump may not prime imme diately because the suction line must first fill with liquid. If the pump fails to prime within five minutes, stop it and check the suction line for leaks.
After the pump has been primed, partially close the discharge line throttling valve in order to fill the line slowly and guard against excessive shock pres sure which could damage pipe ends, gaskets, sprinkler heads, and any other fixtures connected to the line. When the discharge line is completely filled, adjust the throttling valve to the required flow rate.
Leakage
No leakage should be visible at pump mating sur faces, or at pump connections or fittings. Keep all line connections and fittings tight to maintain maxi mum pump efficiency.
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
160 F (71 C). Do not apply it at a higher operating temperature.
PAGE C - 2
Do not remove plates, covers, gauges, pipe plugs, or fittings from an over heated pump. Vapor pressure within the pump can cause parts being disen gaged to be ejected with great force. Al low the pump to cool before servicing.
Strainer Check
If a suction strainer has been shipped with the pump or installed by the user, check the strainer regularly, and clean it as necessary. The strainer should also be checked if pump flow rate begins to drop. If a vacuum suction gauge has been in stalled, monitor and record the readings regularly to detect strainer blockage.
Never introduce air or steam pressure into the pump casing or piping to remove a blockage. This could result in personal injury or damage to the equipment. If backflushing is absolutely neces sary, liquid pressure must be limited to 50% of the maximum permissible operating pressure.
Pump Vacuum Check
With the pump inoperative, install a vacuum gauge in the system, using pipe dope on the threads.
Block the suction line and start the pump. At oper ating speed the pump should pull a vacuum of 20 inches (508,0 mm) or more of mercury. If it does not, check for air leaks in the seal, gasket, or dis charge valve.
Open the suction line, and read the vacuum gauge with the pump primed and at operation speed.
Shut off the pump. The vacuum gauge reading will immediately drop proportionate to static suction lift, and should then stabilize. If the vacuum reading falls off rapidly after stabilization, an air leak exists.
OPERATION
0 SERIES OM-01163
Before checking for the source of the leak, check the point of installation of the vacuum gauge.
STOPPING
Never halt the flow of liquid suddenly. If the liquid being pumped is stopped abruptly, damaging shock waves can be transmitted to the pump and piping system. Close all connecting valves slowly.
After stopping the pump, lock out or disconnect the power source to ensure that the pump will re main inoperative.
Do not operate the pump against a closed discharge throttling valve for long periods of time. If operated against a closed discharge throttling valve, pump components will deteriorate, and the liquid could come to a boil, build pressure, and cause the pump casing to rupture or explode.
BEARING TEMPERATURE CHECK
Bearings normally run at higher than ambient tem peratures because of heat generated by friction.
Temperatures up to 160 F (71 C) are considered normal for bearings, and they can operate safely to at least 180 F (82 C).
Checking bearing temperatures by hand is inaccu rate. Bearing temperatures can be measured ac curately by placing a contact‐type thermometer against the housing. Record this temperature for future reference.
A sudden increase in bearing temperatures is a warning that the bearings are at the point of failing to operate properly. Make certain that the bearing lubricant is of the proper viscosity and at the cor rect level (see LUBRICATION in Section E). Bear ing overheating can also be caused by shaft misalignment and/or excessive vibration.
When pumps are first started, the bearings may seem to run at temperatures above normal. Con tinued operation should bring the temperatures down to normal levels.
Cold Weather Preservation
In below freezing conditions, drain the pump to prevent damage from freezing. Also, clean out any solids by flushing with a hose. Operate the pump for approximately one minute; this will remove any remaining liquid that could freeze the pump rotat ing parts. If the pump will be idle for more than a few hours, or if it has been pumping liquids con taining a large amount of solids, drain the pump, and flush it thoroughly with clean water. To prevent large solids from clogging the drain port and pre venting the pump from completely draining, insert a rod or stiff wire in the drain port, and agitate the liquid during the draining process. Clean out any remaining solids by flushing with a hose.
OPERATION PAGE C - 3
0 SERIES
TROUBLESHOOTING - SECTION D
Review all SAFETY information in Section A.
OM-01163
Before attempting to open or service the pump:
1. Familiarize yourself with this manual.
2. Disconnect or lock out the power source to ensure that the pump will remain inoperative.
3. Allow the pump to completely cool if overheated.
4. Check the temperature before open ing any covers, plates, or plugs.
5. Close the suction and discharge valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
Not enough liquid in casing.
Suction check valve contaminated or damaged.
Air leak in suction line.
Lining of suction hose collapsed.
Add liquid to casing. See
Correct leak.
Replace suction hose.
PRIMING
Clean or replace check valve.
Leaking or worn seal or pump gasket.
Check pump vacuum. Replace leaking or worn seal or gasket.
Suction lift or discharge head too high.
Check piping installation and install bypass line if needed. See
INSTALLATION .
Strainer clogged.
Suction check valve or foot valve clogged or binding.
Check strainer and clean if necessary.
Clean valve.
.
Air leak in suction line.
Correct leak.
Lining of suction hose collapsed.
Strainer clogged.
Replace suction hose.
Leaking or worn seal or pump gasket.
Check pump vacuum. Replace leaking or worn seal or gasket.
Check strainer and clean if necessary.
TROUBLESHOOTING PAGE D - 1
OM-01163 0 SERIES
TROUBLE
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE (cont.)
PUMP REQUIRES
TOO MUCH
POWER
PUMP CLOGS
FREQUENTLY
EXCESSIVE NOISE
BEARINGS RUN
TOO HOT
POSSIBLE CAUSE PROBABLE REMEDY
Suction intake not submerged at proper level or sump too small.
Impeller or other wearing parts worn or damaged.
Impeller clogged.
Check installation and correct submergence as needed.
Replace worn or damaged parts.
Check that impeller is properly centered and rotates freely.
Free impeller of debris.
Pump speed too slow.
Check driver output; check belts or couplings for slippage.
Suction lift or discharge head too high.
Check piping installation and install bypass line if needed. See
INSTALLATION .
Pump speed too high.
Discharge head too low.
Liquid solution too thick.
Bearing(s) frozen.
Check driver output.
Adjust discharge valve.
Dilute if possible.
Disassemble pump and check bearing(s).
Liquid solution too thick.
Discharge flow too slow.
Discharge line clogged or restricted; hose kinked.
Suction check valve or foot valve clogged or binding.
Dilute if possible.
Open discharge valve fully to increase flow rate, and run power source at maximum governed speed.
Check discharge lines; straighten hose.
Clean valve.
Cavitation in pump.
Reduce suction lift and/or friction losses in suction line. Record vacuum and pressure gauge readings and consult local representative or factory.
Pumping entrained air.
Locate and eliminate source of air bubble.
Pump or drive not securely mounted.
Secure mounting hardware.
Impeller clogged or damaged.
Clean out debris; replace damaged parts.
Bearing temperature is high, but within limits.
Low or incorrect lubricant
Suction and discharge lines not properly supported.
Drive misaligned.
Check bearing temperature regularly to monitor any increase.
Check for proper type and level of lubricant.
Check piping installation for proper support.
Align drive properly.
PAGE D - 2 TROUBLESHOOTING
0 SERIES
PREVENTIVE MAINTENANCE
Since pump applications are seldom identical, and pump wear is directly affected by such things as the abrasive qualities, pressure and temperature of the liquid being pumped, this section is intended only to provide general recommendations and practices for preventive maintenance. Regardless of the application however, following a routine pre ventive maintenance schedule will help assure trouble‐free performance and long life from your
Gorman‐Rupp pump. For specific questions con cerning your application, contact your Gorman‐
Rupp distributor or the Gorman‐Rupp Company.
Record keeping is an essential component of a good preventive maintenance program. Changes in suction and discharge gauge readings (if so
OM-01163 equipped) between regularly scheduled inspec tions can indicate problems that can be corrected before system damage or catastrophic failure oc curs. The appearance of wearing parts should also be documented at each inspection for comparison as well. Also, if records indicate that a certain part
(such as the seal) fails at approximately the same duty cycle, the part can be checked and replaced before failure occurs, reducing unscheduled down time.
For new applications, a first inspection of wearing parts at 250 hours will give insight into the wear rate for your particular application. Subsequent inspec tions should be performed at the intervals shown on the chart below. Critical applications should be inspected more frequently.
Item
Preventive Maintenance Schedule
Daily
Service Interval*
Weekly Monthly Semi‐
Annually
Annually
General Condition (Temperature, Unusual
Noises or Vibrations, Cracks, Leaks,
Loose Hardware, Etc.)
Pump Performance (Gauges, Speed, Flow)
Bearing Lubrication
Seal Lubrication (And Packing Adjustment,
If So Equipped)
V‐Belts (If So Equipped)
Air Release Valve Plunger Rod (If So Equipped)
Front Impeller Clearance (Wear Plate)
Rear Impeller Clearance (Seal Plate)
Check Valve
Pressure Relief Valve (If So Equipped)
Pump and Driver Alignment
Shaft Deflection
Bearings
Bearing Housing
Piping
Driver Lubrication - See Mfgr's Literature
I
I
I
I
I
I
C
I
I
R
R
I
I
I
I
I
I
C
Legend:
I = Inspect, Clean, Adjust, Repair or Replace as Necessary
C = Clean
R = Replace
* Service interval based on an intermittent duty cycle equal to approximately 4000 hours annually.
Adjust schedule as required for lower or higher duty cycles or extreme operating conditions.
TROUBLESHOOTING PAGE D - 3
0 SERIES OM-01163
PUMP MAINTENANCE AND REPAIR ‐ SECTION E
MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK
OPERATING PERFORMANCE.
STANDARD PERFORMANCE FOR PUMP MODEL 02K52-B
Based on 70 F (21 C) clear water at sea level with minimum suction lift. Since pump installations are seldom identical, your performance may be dif ference due to such factors as viscosity, specific gravity, elevation, temperature, and impeller trim.
Contact the Gorman‐Rupp Company to verify per formance or part numbers.
If your pump serial number is followed by an “N”, your pump is NOT a standard production model.
Pump speed and operating condition points must be within the continuous per formance range shown on the curve.
MAINTENANCE & REPAIR PAGE E - 1
OM-01163
PARTS PAGE
SECTION DRAWING
0 SERIES
PAGE E - 2
Figure 1. 02K52-B Pump Model Assembly
MAINTENANCE & REPAIR
0 SERIES OM-01163
PARTS LIST
Pump Model 02K52-B
(From S/N 1255789 up)
If your pump serial number is followed by an “N”, your pump is NOT a standard production model. Contact the Gorman‐Rupp Company to verify part numbers.
ITEM
NO.
PART NAME
15
16
17
18
19
10
11
12
13
14
5
6
7
8
9
3
4
1
2
25
26
27
28
29
20
21
22
23
24
PUMP HOUSING
IMPELLER
SEAL ASSEMBLY
FILL PLUG ASSY
RD HD MACH SCREW
RD HD MACH SCREW
STUD
HEX NUT
HEX HD CAPSCREW
HEX NUT
LOCK WASHER
BEARING
BEARING HOUSING
BEARING
IMP ADJ SHIM SET
IMP SHAFT KEY
IMPELLER SHAFT
RETAINING RING
BRG ADJ SHIM SET
INTERMEDIATE BRCKT
SLINGER RING
HOUSING GASKET
VANE PLATE
HOUSING DRAIN PLUG
NAME PLATE
DRIVE SCREW
PIPE PLUG
IMPELLER NUT
VANE PLATE O‐RING
NOT SHOWN:
G‐R DECAL
ROTATION DECAL
INSTRUCTION TAG
SUCTION STICKER
PRIMING STICKER
DISCHARGE STICKER
PART
NUMBER
See Note Below
38621-007
25285-852
48271-060
X0402
X0405
C0606
D06
B0606
D06
J06
S528
10671
S528
10486
N0303-1/2
10673
S494
2X
6367C
31131-062
2958GB
10204
P08
38818-020
BM#04-03
P04
AT07S
S1487
MAT'L
CODE
17040
15990
15000
---
17090
10010
19120
20000
10010
15079
10010
---
---
17090
17090
15991
15991
15991
15991
15991
---
10010
---
13990
17000
15079
15991
---
GR-03
2613M
38817-046
6588AG
6588AH
6588BJ
---
---
---
---
---
---
QTY
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
4
4
1
8
4
1
1
1
1
2
8
1
1
INDICATES PARTS RECOMMENDED FOR STOCK
INCLUDED WITH REPAIR PUMP CASING ASSY
MAINTENANCE & REPAIR
46471-213 --1
PAGE E - 3
OM-01163 0 SERIES
PUMP AND SEAL DISASSEMBLY
AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de cals attached to the pump.
This pump requires little service due to its rugged, minimum‐maintenance design. However, if it be comes necessary to inspect or replace the wearing parts, follow these instructions which are keyed to the sectional view (see Figure 1) and the accompa nying parts list.
This manual will alert personnel to known proce dures which require special attention, to those which could damage equipment, and to those which could be dangerous to personnel. However, this manual cannot possibly anticipate and provide detailed precautions for every situation that might occur during maintenance of the unit. Therefore, it is the responsibility of the owner/maintenance per sonnel to ensure that only safe, established main tenance procedures are used, and that any proce dures not addressed in this manual are performed only after establishing that neither personal safety nor pump integrity are compromised by such prac tices.
Before attempting to service the pump, disconnect the power source to ensure that the pump will re main inoperative. Close all valves in the suction and discharge lines.
For power source disassembly and repair, consult the literature supplied with the power source, or contact your local representative.
Before attempting to open or service the pump:
1. Familiarize yourself with this man ual.
2. Disconnect the power source to ensure that the pump will remain inoperative.
PAGE E - 4
3. Allow the pump to completely cool if overheated.
4. Check the temperature before opening any covers, plates, or plugs.
5. Close the suction and discharge valves.
6. Vent the pump slowly and cau tiously.
7. Drain the pump.
Pump Disassembly
Before attempting to service the pump, remove the pump housing drain plug (24) and drain the pump.
Clean and reinstall the drain plug.
To service the impeller (2), seal assembly (3), or va ne plate (23), the pump housing (1) must be sepa rated from the intermediate (20).
Remove the suction and discharge lines. Remove the nuts (8) and use a suitable hoist and sling to separate the pump housing and gasket (22) from the intermediate bracket.
Use lifting and moving equipment in good repair and with adequate capacity to prevent injuries to personnel or dam age to equipment. Suction and dis charge hoses and piping must be re moved from the pump before lifting.
Impeller Removal
For access to the impeller (2), disengage the hard ware (5 and 6) and remove the vane plate (23). In sert a pry bar between the vanes of the impeller be ing careful not to damage the vanes. Disengage the impeller nut (28). Remove the impeller (2). Use caution when removing the impeller; tension on the seal spring will be released as the impeller is re moved.
Remove the impeller adjusting shims (15). Tie and tag the shims or measure and record their thick ness for ease of reassembly.
MAINTENANCE & REPAIR
0 SERIES OM-01163
Seal Removal and Disassembly
Remove the spring. Apply oil to the shaft and work it up under the rubber bellows. Slide the rotating portion of the seal off the shaft.
Remove the hardware (9, 10 and 11) securing the intermediate bracket (20) to the bearing housing
(13). Slide the intermediate bracket off the shaft and use a suitably sized dowel to press the seal stationary element and seat out of the intermediate from the back side.
Remove the slinger ring (21).
Shaft and Bearing Removal and Disassembly
When the pump is properly operated and main tained, the shaft and bearing should not require disassembly. Disassemble the shaft and bearing only when there is evidence of wear or damage.
Clean the bearing housing, shaft and all compo nent parts (except the bearing) with a soft cloth soaked in cleaning solvent. Inspect the parts for wear or damage and replace as necessary.
Most cleaning solvents are toxic and flammable. Use them only in a well ven tilated area free from excessive heat, sparks, and flame. Read and follow all precautions printed on solvent contain ers.
Clean the bearing thoroughly in fresh cleaning sol vent. Dry the bearing with filtered compressed air and coat with light oil.
Shaft and bearing disassembly in the field is not recommended. These operations should be performed only in a properly equipped shop by qualified personnel.
Use snap ring pliers to remove the bearing retain ing ring (18) from the bearing housing bore. Re move the bearing shim set (19); tie and tag the shims, or measure and record their thickness for ease of reassembly.
Place a block of wood against the impeller end of the shaft (17) and tap the shaft and bearings (12 and 14) from the bearing bore.
After removing the shaft and bearing, clean and in spect the bearing in place as follows.
The bearing must be kept free of all dirt and foreign material. Failure to do so will great ly shorten bearing life. Do not spin dry bearings. This may scratch the balls or races and cause premature bearing fail ure.
Rotate the bearing by hand to check for roughness or binding. If rotation is rough, replace the bearing.
The bearing tolerances provide a tight press fit onto the shaft and a snug slip fit into the bearing housing. Replace the bearing, shaft, or bearing housing if the proper bearing fit is not achieved.
If bearing replacement is required, use a suitable puller or an arbor (or hydraulic) press to remove the bearings from the impeller shaft.
Shaft and Bearing Reassembly and Installation
Clean and inspect the bearing as indicated in
Shaft and Bearing Removal and Disassembly .
To prevent damage during removal from the shaft, it is recommended that the bear ing be cleaned and inspected in place . It is strongly recommended that the bearing be replaced any time the shaft and bearing are removed.
MAINTENANCE & REPAIR
To prevent damage during removal from the shaft, it is recommended that the bear ing be cleaned and inspected in place . It
PAGE E - 5
OM-01163 0 SERIES is strongly recommended that the bearing be replaced any time the shaft and bear ings are removed.
Inspect the shaft for distortion, nicks or scratches or damage. Dress small nicks and burrs with a fine file or emery cloth. Replace the shaft if defective.
The bearing may be heated to ease installation. An induction heater, hot oil bath, electric oven, or hot plate may be used to heat the bearing. Bearings should never be heated with a direct flame or di rectly on a hot plate.
NOTE
If a hot oil bath is used to heat the bearing, both the oil and the container must be absolutely clean. If the oil has been previously used, it must be thor oughly
filtered.
Slide the shaft and assembled bearings into the bearing housing until the inboard bearing is fully seated against the bore shoulder.
When installing the shaft and bearing into the bearing bore, push against the outer race. Never hit the balls or ball cage.
Install the same thickness of bearing adjusting shims (19) as previously removed. Reinstall the re taining ring (18) and check the shaft endplay.
NOTE
Shaft endplay should be .002 to .010 inch (0,05 mm to 0,25 mm). Add or remove bearing adjusting shims to obtain this endplay.
Heat the bearing to a uniform temperature no higher than 250 F (120 C), and slide the bearing onto the shaft until fully seated against the shaft shoulder. This should be done quickly, in one con tinuous motion, to prevent the bearing from cool ing and sticking on the shaft.
Install the slinger ring (21) and shaft key (16).
Seal Reassembly and Installation
Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent.
Use caution when handling hot bear ings to prevent burns.
After the bearing has been installed and allowed to cool, check to ensure that it has not moved out of position in shrinking. If movement has occurred, use a suitable sized sleeve and a press to reposi tion the bearing.
If heating the bearing is not practical, use a suitable sized sleeve and an arbor (or hydraulic) press to in stall the bearing on the shaft.
When installing the bearing on the shaft, never press or hit against the outer race, balls, or ball cage. Press only on the inner race.
PAGE E - 6
Most cleaning solvents are toxic and flammable. Use them only in a well ven tilated area free from excessive heat, sparks, and flame. Read and follow all precautions printed on solvent contain ers.
The seal is not normally reused because wear pat terns on the finished faces cannot be realigned during reassembly. This could result in premature failure. If necessary to reuse an old seal in an emer gency, carefully wash all metallic parts in fresh cleaning solvent and allow to dry thoroughly.
Handle the seal parts with extreme care to prevent damage. Be careful not to contaminate precision finished faces; even fingerprints on the faces can shorten seal life. If necessary, clean the faces with a non‐oil based solvent and a clean, lint‐free tissue.
Wipe lightly in a concentric pattern to avoid scratching the faces.
MAINTENANCE & REPAIR
0 SERIES OM-01163
Inspect the seal components for wear, scoring, grooves, and other damage that might cause leak age. If any components are worn, replace the com plete seal; never mix old and new seal parts .
If a replacement seal is being used, remove it from the container and inspect the precision finished
SPRING
RETAINER faces to ensure that they are free of any foreign matter.
To ease installation of the seal, lubricate the bel lows with water or a very small amount of light lu bricating oil, and apply a drop of light lubricating oil on the finished faces. Assemble the seal as follows,
(see Figure 2).
BEARING
HOUSING
IMPELLER
IMPELLER
SHAFT
IMPELLER
SHIMS
BELLOWS
ROTATING
ELEMENT
STATIONARY
ELEMENT
STATIONARY
SEAT
DRIVE BAND
Figure 2. Seal Assembly
Subassemble the rotating element into the retainer and bellows. Lubricate the I.D. of the bellows with water, and slide this subassembly onto the shaft until the polished faces contact. Install the seal spring.
This seal is not designed for operation at temperatures above 160 F (71 C). Do not use at higher operating temperatures.
Impeller Installation
Inspect the impeller, and replace it if cracked or badly worn.
Lay the intermediate bracket (20) on a flat surface with the impeller side facing up. Subassemble the stationary seat and use even pressure to press this subassembly into the intermediate bracket until it seats squarely against the shoulder bore.
For maximum pump efficiency, the impeller should be centered within the vane plate scroll.
Carefully slide the assembled bracket and station ary seal element over the shaft. Secure the inter mediate to the bearing housing with the hardware
(9, 10 and 11).
To verify the impeller positioning, measure the vane plate and impeller as shown in Figure 3. Use these measurements to calculate the required im peller location (dimension E). Add or remove im peller adjusting shims (15) until dimension E is ob tained.
MAINTENANCE & REPAIR PAGE E - 7
OM-01163 0 SERIES
C
D
2
D
A
B
2
B
Step 1
E
A+
B
2
Step 2
-
C+
D
2
= E
Step 3
Figure 3. Centering Impeller Within Vane Plate Scroll
Install the correct thickness of impeller shims.
Screw the impeller onto the shaft until fully seated.
Make sure the seal spring seats squarely over the shoulder on the back of the impeller.
Final Pump Assembly
Install the suction and discharge lines and open all valves. Make certain that all piping connections are tight, properly supported and secure.
Apply “Loctite Threadlocker No. 242” or equivalent compound to the impeller shaft threads and se cure the impeller with the impeller nut (28). Torque the nut to 30 ft. lbs. (360 in lbs. or 4,15 m. kg.).
Fill the pump casing with clean liquid. Reinstall the fill plug (4) and tighten it.
Refer to OPERATION , Section C, before putting the pump back into service.
Clean all of the old adhesive from the vane plate and its mating surface on the intermediate. Apply a thin film of “3M Gasket Adhesive No. 847” or equiv alent compound to the vane plate and secure the vane plate to the intermediate bracket using the hardware (5 and 6). Assemble the shorter machine screw (5) at the 11 o'clock position on the vane plate.
LUBRICATION
Seal Assembly
The seal assembly is lubricated by the medium be ing pumped and no additional lubrication is re quired.
NOTE
After the vane plate has been installed, check for free shaft rotation. Correct any scraping binding before further reassembly.
Bearings
Pump Reassembly
The bearings in this pump are lubricated from the manufacturer and permanently sealed. No addi tional lubrication is required.
Install the vane plate O‐ring (29) onto the vane plate. Install the casing gasket (22). Ease the pump housing over the vane plate. Be careful not to damage the O‐ring. Secure the housing to the in termediate bracket with the nuts (8).
PAGE E - 8
Power Source
Consult the literature supplied with the power source, or contact your local representative.
MAINTENANCE & REPAIR
For U.S. and International Warranty Information,
Please Visit www.grpumps.com/warranty or call:
U.S.: 419-755-1280
International: +1-419-755-1352
For Canadian Warranty Information,
Please Visit www.grcanada.com/warranty or call:
519-631-2870
THE GORMAN‐RUPP COMPANY MANSFIELD, OHIO
GORMAN‐RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA
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