Gorman-Rupp Pumps 82H20-B 737048 and up User Manual 30 Pages
Gorman-Rupp Pumps 82H20-B 737048 and up User Manual
advertisement
ACE OM-00830-02
January 8, 1980
Rev. F 08‐29‐12
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
80 SERIES PUMP
MODEL
82H20-B
THE GORMAN‐RUPP COMPANY
D MANSFIELD, OHIO
www.grpumps.com
GORMAN‐RUPP OF CANADA LIMITED
D
ST. THOMAS, ONTARIO, CANADA
Printed in U.S.A.
e
1980 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 Lines In Sumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Line Positioning
DISCHARGE LINES
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Siphoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bypass Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coupled Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V‐Belt Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE B - 1
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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cold Weather Preservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BEARING TEMPERATURE CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE C - 1
PAGE C - 1
PAGE C - 1
PAGE C - 2
PAGE C - 2
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PAGE C - 3
PAGE C - 3
PAGE C - 3
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
PERFORMANCE CURVE
PARTS LIST:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY
Pump Casing Removal
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impeller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shaft And Bearing Removal And Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shaft And Bearing Reassembly And Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Reassembly and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impeller Installation and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Casing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Check Valve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Final Pump Assembly
LUBRICATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seal Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE E - 1
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PAGE E - 10 ii
80 SERIES OM-00830
INTRODUCTION
Thank You for purchasing a Gorman‐Rupp pump.
Read this manual carefully to learn how to safely install and operate your pump. Failure to do so could result in personal injury or damage to the pump.
This pump is an 80 Series, semi‐open impeller, self‐ priming centrifugal model. The pump is designed for straight‐in suction where the medium being pumped enters directly into the impeller eye. The basic material of construction for wetted parts is gray iron, with a steel impeller shaft.
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 cording to all national, local and industry stan dards.
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
The Gorman‐Rupp Company:
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
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.
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
80 SERIES OM-00830
SAFETY ‐ SECTION A
This information applies to 80 Series ba sic pumps. Gorman‐Rupp has no con trol over or particular knowledge of the power source which will be used. Refer to the manual accompanying the power source before attempting to begin oper ation.
Because pump installations are seldom identical, this manual cannot possibly provide detailed instructions and pre cautions for each specific application.
Therefore, it is the owner/installer's re sponsibility to ensure that applications not addressed in this manual are per formed only after establishing that nei ther operator safety nor pump integrity are compromised by the installation.
non‐volatile, non‐flammable liquids containing specified entrained solids.
Do not attempt to pump volatile or flam mable 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. Lock out or disconnect 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.
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 without the shields and/or guards in place over the drive shaft, belts, and/or couplings, or other rotating parts. Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to person nel.
This pump is designed to handle most
SAFETY
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-00830 80 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.
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 completely cool before servicing.
Overheating may produce dangerous fumes. Use extreme caution when vent ing the pump, or when removing covers, plates, plugs, or fittings.
Never run this pump backwards. Be cer tain that rotation is correct before fully engaging the pump.
PAGE A - 2 SAFETY
80 SERIES OM-00830
INSTALLATION - SECTION B
Review all SAFETY 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.
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.
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 (see Sec tion E, Page 1).
For further assistance, contact your Gorman‐Rupp distributor or the Gorman‐Rupp Company.
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 configuration, and priming must be tailored to the
Pump Dimensions
See Figure 1 for the approximate physical dimen sions of this pump.
OUTLINE DRAWING
INSTALLATION
Figure 1. Pump Model 82H20-B
PAGE B - 1
OM-00830
PREINSTALLATION INSPECTION
80 SERIES
POSITIONING PUMP
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 for cracks, dents, damaged threads, and other obvious damage.
c. Carefully read all tags, decals, and markings on the pump assembly, and perform all duties indicated.
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.
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.
Lifting
Pump unit weights will vary depending on the mounting and drive provided. Check the shipping tag on the unit packaging for the actual weight, and use lifting equipment with appropriate capacity.
Drain the pump and remove all customer‐installed equipment such as suction and discharge hoses or piping before attempting to lift existing, installed units.
Only operate this pump in the direction in dicated by the arrow on the pump body and on the accompanying decal. Other wise, the impeller could become loosened from the shaft and seriously damage the pump. Refer to Rotation in OPERATION,
Section C.
d. Check levels and lubricate as necessary. Re fer to LUBRICATION in the MAINTENANCE
AND REPAIR section of this manual and per form duties as instructed.
e. If the pump has been stored for more than 12 months, some of the components or lubri cants may have exceeded their maximum shelf life. These must be inspected or re
placed to ensure maximum pump service.
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.
The pump may have to be supported or shimmed to provide for level operation or to eliminate vibra tion.
SUCTION AND DISCHARGE PIPING
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.
PAGE B - 2
Pump performance is adversely effected by in creased suction lift, discharge elevation, and fric tion losses. See the performance curve on Page
E‐1 to be sure your overall application allows pump to operate within the safe operation range.
INSTALLATION
80 SERIES OM-00830
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 (457,2 mm) from the suction and discharge ports and install the lines.
Installation closer to the pump may result in erratic readings.
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
INSTALLATION 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 3/4 inch
(19,1 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.
PAGE B - 3
OM-00830 80 SERIES
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.
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.
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
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).
DISCHARGE LINES
Siphoning
Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity phoning action causing damage to the pump could result.
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
Valves
If a throttling valve is desired in the discharge line, use a valve as large as the largest pipe to minimize
PAGE B - 4 INSTALLATION
80 SERIES OM-00830 friction losses. Never install a throttling valve in a suction line.
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.
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.
If the application involves a high discharge head, gradually close the discharge throttling valve before stopping the pump.
When checking alignment, disconnect the power source to ensure that the pump will remain inoperative.
Bypass Lines
If a system check valve is used due to high dis charge head, it may be necessary to vent trapped air from the top of the pump during the priming process. This may be accomplished by installing a bypass line from the top of the pump, back to the source of liquid. The end of the bypass line must be submerged. The line must be large enough to pre vent clogging, but not so large as to affect pump discharge capacity.
ALIGNMENT
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.
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).
NOTE
Check Rotation, Section C, before final alignment of the pump.
When mounted at the Gorman‐Rupp factory, driver and pump are aligned before shipment. Misalign ment will occur in transit and handling. Pumps
INSTALLATION
Figure 3A. Aligning Spider Type Couplings
PAGE B - 5
OM-00830 80 SERIES
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.
MISALIGNED:
SHAFTS
NOT PARALLEL
MISALIGNED:
SHAFTS
NOT IN LINE
ALIGNED: SHAFTS
PARALLEL AND
SHEAVES IN LINE
Figure 3C. Alignment of V‐Belt Driven Pumps
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; overspeeding the pump may damage both pump and power source.
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.
Do not operate the pump without the shields and/or guards in place over the drive shaft, belts, and/or couplings, or other rotating parts. Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to person nel.
PAGE B - 6 INSTALLATION
80 SERIES OM-00830
OPERATION - SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and decals attached to the pump.
This pump is designed to handle most non‐volatile, non‐flammable liquids containing specified entrained solids.
Do not attempt to pump volatile or flam mable liquids which may damage the pump or endanger personnel as a result of pump failure.
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.
Once the pump casing has been filled, the pump will prime and reprime as necessary.
Pump speed and operating condition points must be within the continuous per formance range shown on the curve (See
Section E, Page 1).
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.
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.
STARTING
Consult the operations manual furnished with the power source.
Rotation
The correct direction of pump rotation is counter clockwise when facing the impeller. If the pump is operated in the wrong direction, the impeller could become loosened from the shaft and seriously damage the pump.
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.
OPERATION
Only operate this pump in the direction in dicated by the arrow on the pump body and on the accompanying decal. Other
PAGE C - 1
OM-00830 80 SERIES wise, the impeller could become loosened from the shaft and seriously damage the pump.
Consult the operating manual furnished with the power source before attempting to start the power source.
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 lit erature supplied with the motor for specific instruc tions.
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.
OPERATION
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.
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.
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.
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 completely cool before servicing.
Lines Without a Bypass
Open all valves in the discharge line and start the engine. Priming is indicated by a positive reading on the discharge pressure gauge or by a quieter operation. The pump may not prime immediately 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
PAGE C - 2
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
OPERATION
80 SERIES OM-00830 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 shown on the pump performance curve (see Section E,
Page 1).
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.
Before checking for the source of the leak, check the point of installation of the vacuum gauge.
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.
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.
If the application involves a high discharge head, gradually close the discharge throttling valve before stopping the pump.
After stopping the pump, lock out or disconnect the power source to ensure that the pump will re main inoperative.
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.
OPERATION PAGE C - 3
80 SERIES
TROUBLESHOOTING - SECTION D
Review all SAFETY information in Section A.
OM-00830
Before attempting to open or service the pump:
1. Familiarize yourself with this manual.
2. Lock out or disconnect 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
PUMP FAILS TO
PRIME
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
POSSIBLE CAUSE PROBABLE REMEDY
Not enough liquid in casing.
Add liquid to casing. See
PRIMING.
Clean or replace check valve.
Suction check valve contaminated or damaged.
Air leak in suction line.
Lining of suction hose collapsed.
Correct leak.
Replace suction hose.
Leaking or worn seal or pump gasket.
Check pump vacuum. Replace leaking or worn seal or gasket.
Suction check valve or foot valve clogged or binding.
Clean valve.
Suction lift or discharge head too high.
Check piping installation and install bypass line if needed. See INSTAL
LATION.
Strainer clogged.
Check strainer and clean if neces sary.
Air leak in suction line.
Lining of suction hose collapsed.
Correct leak.
Replace suction hose.
Leaking or worn seal or pump gasket.
Check pump vacuum. Replace leaking or worn seal or gasket.
TROUBLESHOOTING PAGE D - 1
OM-00830 80 SERIES
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE (cont.)
PUMP REQUIRES
TOO MUCH
POWER
PUMP CLOGS
FREQUENTLY
Suction intake not submerged at proper level or sump too small.
Impeller or other wearing parts worn or damaged.
Strainer clogged.
Impeller clogged.
Replace worn or damaged parts.
Check that impeller is properly centered and rotates freely.
Check strainer and clean if neces sary.
Free impeller of debris.
Suction lift or discharge head too high.
Check piping installation and install bypass line if needed. See INSTAL
LATION.
Pump speed too slow.
Check driver output; check belts or couplings for slippage.
Pump speed too high.
Check installation and correct submergence as needed.
Discharge head too low.
Liquid solution too thick.
Discharge flow too slow.
Suction check valve or foot valve clogged or binding.
EXCESSIVE NOISE Cavitation in pump.
Check driver output; check that sheaves or couplings are correctly sized.
Adjust discharge valve.
Dilute if possible.
Open discharge valve fully to in crease flow rate, and run engine at maximum governed speed.
Clean valve.
Pumping entrained air.
Reduce suction lift and/or friction losses in suction line. Record vac uum and pressure gauge readings and consult local representative or factory.
Locate and eliminate source of air bubble.
Pump or drive not securely mounted.
Impeller clogged or damaged.
Suction and discharge lines not prop erly supported.
Secure mounting hardware.
Clean out debris; replace damaged parts.
Check piping installation for proper support.
BEARINGS RUN
TOO HOT
Bearing temperature is high, but within limits.
Low or incorrect lubricant.
Drive misaligned.
Pump speed too high.
Bearing(s) frozen.
Check bearing temperature regu larly to monitor any increase.
Check for proper type and level of lu bricant.
Align drive properly.
Reduce speed of power source.
Disassemble pump and check bearing(s).
PAGE D - 2 TROUBLESHOOTING
80 SERIES OM-00830
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 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
80 SERIES
OM-00830
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 82H20-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-00830
PARTS PAGE
SECTION DRAWING
80 SERIES
PAGE E - 2
Figure 1. Pump Model 82H20-B
MAINTENANCE & REPAIR
80 SERIES
OM-00830
PARTS LIST
Pump Model 82H20-B
(From S/N 737048 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 PART
NUMBER
MAT'L
CODE
QTY ITEM
NO.
PART NAME PART
NUMBER
MAT'L
CODE
QTY
1 PUMP CASING
2 IMPELLER
3 SEAL ASSY
4 BOTTLE OILER
5 PIPE COUPLING
6 PIPE NIPPLE
7 OIL SEAL
8 SPRING SEAT
8149
7947B
46512-034
46711-505
AE04
T0406
S2102
3929A
9 IMPELLER SHIM SET 2X
10 SHAFT SLEEVE
11 PIPE PLUG
12 SLINGER RING
3447
P04
3272
13 BALL BEARING
14 VENTED PLUG
15 PEDESTAL
16 ROTATION DECAL
17 BALL BEARING
23275-008
S1703
3114B
2613M
23275-008
18 O‐RING
19 RETAINING RING
25152-235
S247
20 SHAFT KEY
21 IMPELLER SHAFT
N0407
38514-549
22 ALLEN HD SETSCREW GA#10-01S
23 BEARING RETAINER 38322-521
24 OIL SEAL 25227-303
25 BRG ADJ SHIM SET 48261-009
26 SIGHT GAGE
27 PIPE PLUG
28 PIPE PLUG
26714-011
P06
P06
29 OIL SEAL
30 STUD
31 HEX NUT
32 SEAL PLATE ASSY
33 GASKET SET
25227-311
C0607
D06
38272-341
3G
---
15991
15991
10010
18000
34 WEAR PLATE ASSY 2634B 15990
INDICATES PARTS RECOMMENDED FOR STOCK
10010
10010
---
---
15079
15079
---
17000
17090 REF
16000
15079
19120
1
1
1
---
---
10010
---
---
---
---
15990
15010
15990
26000
---
15990
---
15079
15079
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
8
1
1
8
1
1
1
1
1
1
1
1
1
1
35 WASHER 3118
36 T TYPE LOCKWASHER AK06
37 HEX HD CAPSCREW B0603
38 HEX NUT
39 LOCK WASHER
D06
J06
40 PIPE PLUG P16
41 HEX HD CAP SCREW B0616
42 FIBER WASHER
43 STUD
44 HEX NUT
45 SUCTION FLANGE
KF06
C0606
D06
1361
46 CHECK VALVE ASSY 1361A
47 -VALVE GASKET
48 -LGE VALVE WT
1361G
19B
49 -SML VALVE WT 1354
50 -RD HD MACH SCR X0403
51 -LOCK WASHER
52 FILL PLUG ASSY
53 NAME PLATE
54 DRIVE SCREW
J04
48271-062
38818-019
BM#04-03
NOT SHOWN:
G‐R DECAL
LUBE DECAL
INSTRUCTION TAG
INSTRUCTION TAG
GR-03
38816-079
38817-011
38817-028
SUCTION STICKER 6588AG
PRIMMING STICKER 6588AH
DISCH STICKER 6588BJ
OPTIONAL:
STRAINER
2” STRAINER
2362
26841-025
STREET ELBOW RS32
CSG HTR ASSY 120V 47811-046
CSG HTR ASSY 240V 47811-047
---
---
---
---
---
---
---
24001
---
11999
---
---
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
4
1
1
4
1
1
1
1
1
1
1
1
15990
15991
15991
15991
15991
10009
15991
18040
15991
15991
10010
---
19070
10010
15160
17090
17090
---
13990
17000
MAINTENANCE & REPAIR PAGE E - 3
OM-00830 80 SERIES
PUMP AND SEAL DISASSEMBLY
AND REASSEMBLY
Review all SAFETY information 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 lists.
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, lock out or disconnect the power source to ensure that it will remain 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 power source representative.
Before attempting to open or service the pump:
1. Familiarize yourself with this man ual.
2. Lock out or disconnect the power source to ensure that the pump will remain inoperative.
3. Allow the pump to completely cool if overheated.
PAGE E - 4
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.
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.
Suction Check Valve Disassembly
Before attempting to service the pump, remove the pump casing drain plug (40) and drain the pump.
Clean and reinstall the drain plug.
To service the suction check valve, remove the suc tion piping. Remove the nuts (44) securing the suc tion flange (45) and the check valve assembly (46) to the pump casing (1). Pull the check valve assem bly from the suction port.
Inspect the check valve parts for wear or damage.
If replacement is required, remove the hardware
(50 and 51) and separate the valve gasket (47) and weights (48 and 49).
If no further disassembly is required, see Suction
Check Valve Installation.
Pump Casing Removal
To service the impeller (2), wear plate assembly
(34) and seal assembly (3), disconnect the dis charge piping. Remove the hardware securing the pump casing (1) to the base.
Remove the nuts (31) securing the pump casing and gasket set (33) to the pedestal (15) and seal plate (32). Install a standard 5/8-11 UNC lifting eye in the tapped hole in the top of the pump cas ing. Be sure to screw the eye into the casing until fully engaged. Use a hoist and sling of suitable ca pacity to separate the casing from the seal plate and pedestal.
MAINTENANCE & REPAIR
80 SERIES OM-00830
Turn
Counterclockwise
Do not attempt to lift the complete pump unit using the lifting eye. It is designed to facilitate removal or installation of in dividual components only. Additional weight may result in damage to the pump or failure of the eye bolt.
Remove the gasket set (33) from the pedestal and seal plate. Tie and tag the gaskets, or measure and record their thickness for ease of reassembly. Tie and tag any leveling shims used under the casing mounting feet to ease reassembly.
Inspect the wear plate assembly (34) and replace it if badly scored or worn. To remove the wear plate assembly, remove the capscrew (41) and fiber washer (42) just below the suction port. Reach through the suction port and disengage the hard ware (38 and 39) from the wear plate. Tap the wear plate assembly free of the casing.
Impeller Removal
Before attempting to remove the impeller, remove the bottle oiler (4) and piping (5 and 6) from the seal plate. Remove the drain plug (11) and drain the seal cavity. Clean and reinstall the drain plug.
Immobilize the impeller by wedging a block wood between the vanes. Remove the hardware (35, 36 and 37) securing the impeller to the shaft. If re moved, install the shaft key (20). Install a lathe dog on the drive end of the shaft (21) with the “V” notch positioned over the shaft keyway.
With the impeller rotation still blocked, strike the lathe dog sharply in a counterclockwise direction
(when facing the drive end of the shaft). The impel ler may also be loosened by using a long piece of heavy bar stock to pry against the arm of the lathe dog in a counterclockwise direction (when facing the drive end of the shaft) as shown in Figure 2.
Use caution not to damage the shaft or keyway.
When the impeller breaks loose, remove the lathe dog and wood block and unscrew the impeller from the shaft.
MAINTENANCE & REPAIR
Lathe Dog Arm
Heavy
Bar Stock
“V” Notch
Shaft Key
Impeller Shaft
Lathe Dog
Setscrew
Figure 2. Loosening Impeller
Unscrew the impeller from the shaft. Use caution when removing the impeller; tension on the seal spring will be released as the impeller is un screwed.
Inspect the impeller and replace it if cracked or badly worn. Slide the impeller adjusting shims (9) off the impeller shaft. Tie and tag the shims, or measure and record their thickness for ease of reassembly.
Seal Removal and Disassembly
(Figures 1 or 3)
Remove the spring centering washer (8) and seal spring.
Carefully slide the shaft sleeve (10) and rotating portion of the seal off the shaft (21) as a unit. Apply oil to the sleeve and work it under the rubber bel lows. Slide the rotating portion of the seal off the sleeve.
Carefully slide the seal plate (32) and stationary portion of the seal off the shaft as a unit.
Position the seal plate on a flat surface with the im peller side down. Pry the oil seal (7) out of the seal plate. Use a suitably sized dowel to press the sta tionary seat and O‐ring out of the seal plate from the back side.
If no further disassembly is required, see Seal
Reassembly and Installation.
PAGE E - 5
OM-00830 80 SERIES
Shaft And Bearing Removal And Disassembly
When the pump is properly operated and main tained, the pedestal should not require disassem bly. Disassemble the shaft and bearings only when there is evidence of wear or damage.
Shaft and bearing disassembly in the field is not recommended. these operations should be performed only in a properly‐ equipped shop by qualified personnel.
Remove the pedestal drain plug (28) and drain the pedestal. Clean and reinstall the plug.
Remove the slinger ring (12) from the shaft. Re move the pedestal mounting hardware from the base. Tie and tag any shims used under the mounting feet for leveling.
Use snap ring pliers to remove the bearing retain ing ring (19) from the pedestal bore. Remove the bearing shim set (25); tie and tag the shims, or measure and record their thickness for ease of reassembly.
Remove the setscrews (22) from the bearing re tainer (23) and install two machine screws
(#10-32 X 1-inch long, not supplied). Pry the re tainer from the pedestal bore using a pair of screw drivers against the heads of the machine screws.
Do not use the machine screws to jack against the ball bearing. Remove the machine screws and re install the setscrews.
Press the oil seal (24) from the bearing retainer, and remove the O‐ring (18) from the pedestal bore.
Place a block of wood against the impeller end of the shaft and tap the shaft and assembled bear ings (13 and 17) out of the pedestal.
Press the oil seal (29) from the pedestal bore.
After removing the shaft and bearings, clean and inspect the bearings in place as follows.
PAGE E - 6
To prevent damage during removal from the shaft, it is recommended that bearings be cleaned and inspected in place. It is
strongly recommended that the bearings be replaced any time the shaft and bear ings are removed.
Clean the pedestal, shaft and all component parts
(except the bearings) with a soft cloth soaked in cleaning solvent. Inspect the parts for wear or dam age 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.
Inspect the shaft for distortion, nicks or scratches, or thread damage on the impeller end. Dress small nicks and burrs with a fine file or emery cloth. Re place the shaft if defective.
Clean the bearings thoroughly in fresh cleaning solvent. Dry the bearings with filtered compressed air and coat with light oil.
Bearings 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 bearings by hand to check for rough ness or binding and inspect the bearing balls. If ro tation is rough or the bearing balls are discolored, replace the bearings.
The bearing tolerances provide a tight press fit onto the shaft and a snug slip fit into the pedestal.
MAINTENANCE & REPAIR
80 SERIES OM-00830
Replace the bearings, shaft, or pedestal if the proper bearing fit is not achieved.
If bearing replacement is required, use a bearing puller to remove the inboard and outboard bear ings from the impeller shaft.
curred, use a suitably sized sleeve and a press to reposition the bearings.
If heating the bearings is not practical, use a suit ably sized sleeve and an arbor (or hydraulic) press to install the bearings on the shaft.
Shaft And Bearing Reassembly And Installation
Clean and inspect the bearings as indicated in
Shaft and Bearing Removal and Disassembly.
When installing the bearings onto the shaft, never press or hit against the outer race, balls, or ball cage. Press only on the inner race.
Slide the shaft and assembled bearings into the pedestal until the inboard bearing is fully seated against the bore shoulder.
To prevent damage during removal from the shaft, it is recommended that bearings be cleaned and inspected in place. It is
strongly recommended that the bearings be replaced any time the shaft and and bearings are removed.
The bearings may be heated to ease installation.
An induction heater, hot oil bath, electric oven, or hot plate may be used to heat the bearings. Bear ings should never be heated with a direct flame or directly on a hot plate.
NOTE
If a hot oil bath is used to heat the bearings, both the oil and the container must be absolutely clean. If the oil has been previously used, it must be thor
oughly filtered.
Heat the bearings to a uniform temperature no
higher than 250
_
F (120
_
C), and slide the bearings onto the shaft, one at a time, until they are fully seated. This should be done quickly, in one con tinuous motion, to prevent the bearings from cool ing and sticking on the shaft.
When installing the shaft and bearings into the bearing bore, push against the outer race. Never hit the balls or ball cage.
Position the oil seal (29) in the pedestal bore with the lip positioned as shown in Figure 1. Press the oil seal into the bore until fully seated.
Position the oil seal (24) in the bearing retainer (23) with the lip positioned as shown in Figure 1. Press the oil seal into the retainer until fully seated.
Replace the bearing retainer O‐ring (18) in the ped estal, and lubricate it with grease. Press the bear ing retainer into the pedestal until it seats against the bearing. Be careful not to cut the oil seal lip on the shaft keyway. Be sure the setscrews (22) in the bearing retainer are positioned horizontally inline.
Install the same thickness of bearing adjusting shims (25) as previously removed. Reinstall the re taining ring (19) and check shaft endplay.
Use caution when handling hot bear ings to prevent burns.
After the bearings have been installed and allowed to cool, check to ensure that they have not moved out of position in shrinking. If movement has oc
MAINTENANCE & REPAIR
NOTE
Shaft endplay should be .002 to .005 inch (0,05 to
0,12 mm). Add or remove bearing adjusting shims to obtain this endplay.
Install the slinger ring (12) and shaft key (20). Install any leveling shims used under the pedestal feet.
PAGE E - 7
OM-00830 80 SERIES
Seal Reassembly and Installation
(Figures 1 and 3)
Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent.
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.
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.
ROTATING ELEMENT
DRIVE BAND
Inspect the seal components for wear, scoring, grooves, and other damage that might cause leak age. Clean and polish the shaft sleeve, or replace it if there are nicks or cuts on either end. If any com ponents are worn, replace the complete 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 faces to ensure that they are free of any foreign matter.
To ease installation of the seal, lubricate the O‐ rings and shaft sleeve (10) with water or a very
small amount of oil, and apply a drop of light lubri cating oil on the finished faces. Assemble the seal as follows, (see Figure 3).
STATIONARY ELEMENT
O‐RINGS
IMPELLER
ADJUSTING
SHIMS
BELLOWS
IMPELLER
SHAFT
IMPELLER
SPRING
CENTERING
WASHER
PAGE E - 8
SHAFT
SLEEVE
STATIONARY SEAT
SPRING
RETAINER
Figure 3. 46512-034 Seal Assembly
MAINTENANCE & REPAIR
80 SERIES OM-00830
This seal is not designed for operation at temperatures above 160 _F (71_C). Do not use at higher operating temperatures.
Position the seal plate (32) on a flat surface with the impeller side down. Position the lip seal (7) in the seal plate bore with the lip position as shown in Fig ure 1. Press the lip seal into the seal plate bore until fully seated.
Position the seal plate on a flat surface with the im peller side facing up. Lubricate the stationary seat
O‐ring with water or light oil, and press the station ary subassembly into the seal plate until fully seated. After installation, wipe the face of the sta tionary element lightly in a concentric pattern with a clean, lint‐free tissue.
Slide the assembled seal plate and stationary seat over the impeller shaft (20) and temporarily secure the seal plate to the pedestal (12) using two cap screws and nuts (1/2 UNC X 1 1/2 inch long, not supplied).
Lubricate the O.D. of the shaft sleeve with water or a very small amount of oil, and slide the rotating portion of the seal assembly (consisting of the ro tating element, bellows and retainer) onto the shaft sleeve until the face of the rotating element is just
flush with the chamfered end of the sleeve.
Slide the assembled seal and sleeve onto the shaft until the seal faces contact. Continue to press the shaft sleeve through the rotating portion of the seal until it is fully seated against the shaft shoulder. Use caution not to roll or damage the lip of the seal (7).
Install the seal spring and spring centering washer
(8).
Lubricate the seal as indicated in LUBRICATION at the end of this section.
Impeller Installation and Adjustment
Inspect the impeller, and replace it if cracked or badly worn. Install the same thickness of impeller shims (9) as previously removed, and screw the impeller onto the shaft until tight.
MAINTENANCE & REPAIR
A clearance of .010 to .020 inch (0,25 to 0,51 mm) between the impeller and the seal plate is neces sary for maximum pump efficiency. Measure this clearance and add or remove impeller shims until this clearance is reached.
NOTE
Be sure the seal plate is tight against the pedestal while measuring this clearance.
After the back clearance is set, secure the impeller with the hardware (35, 36 and 37). Reinstall the bottle oiler and piping (4, 5 and 6).
Pump Casing Installation
If the wear plate assembly (34) was removed, posi tion the replacement wear plate assembly squarely against the casing shoulder and secure it with the mounting hardware (38, 39, 41 and 42). Replace the fiber washer (42) if badly worn or compressed.
Remove the hardware temporarily securing the seal plate to the pedestal. Install the same thick ness of pump casing gaskets (33) as previously re moved. Secure the pump casing (1) to the seal plate and pedestal with the nuts (31). Do not fully tighten the nuts at this time.
A clearance of .008 to .015 inch (0,20 to 0,38 mm) between the impeller and the wear plate is also rec ommended for maximum pump efficiency. Set this clearance by adding or removing gaskets in the pump casing gasket set (33) until the impeller scrapes against the wear plate when the shaft is turned by hand. After the impeller scrapes, add ap proximately .008 inch (0,20 mm) of gaskets.
Secure the pump casing to the base with the pre viously removed hardware. Be sure to reinstall any leveling shims used under the mounting feet of the pump casing.
If a lifting eye was used to move the pump casing,
be sure to remove the lifting eye from the pump casing.
Do not attempt to lift the complete pump unit using the lifting eye. It is designed
PAGE E - 9
OM-00830 80 SERIES to facilitate removal or installation of in dividual components only. Additional weight may result in damage to the pump or failure of the eye bolt.
Suction Check Valve Installation
LUBRICATION
Seal Assembly
(Figures 1 and 4)
Fill the bottle oiler (4) approximately 2/3 full with
SAE No. 30 non‐detergent oil. Check the oil level regularly and keep the bottle oiler full.
Inspect components of the check valve assembly
(46) and replace as required. If separated at disas sembly, assemble the check valve weights (48 and
49) to the check valve gasket (47) with the hard ware (51 and 52).
Position the check valve assembly in the suction port with the large weight (48) facing toward the in side of the pump casing. Install the suction flange
(45) and secure with the nuts (44). Check the oper ation of the check valve to ensure proper seating and free movement.
Bearings
The pedestal was fully lubricated when shipped from the factory. Check the oil level regularly through the sight gauge (26) and maintain it at the middle of the gauge. When lubrication is required, add SAE No. 30 non‐detergent oil through the hole for the air vent (14). Do not over‐lubricate. Over‐lu brication can cause the bearings to over‐heat, re sulting in premature bearing failure.
NOTE
The white reflector in the sight gauge must be posi tioned horizontally to provide proper drainage.
Final Pump Assembly
Be sure the pump and power source are securely mounted to the base. Reconnect the power source to the pump.
Under normal conditions, drain the pedestal once each year and refill with approximately 5 ounces
(0,2 liters) of clean oil. Change the oil more fre quently if the pump is operated continuously or in stalled in an environment with rapid temperature change.
Install the suction and discharge lines and open all valves. Make certain that all piping connections are tight, properly supported and secure.
If a lifting eye was used to move the pump casing,
be sure to remove the lifting eye from the pump casing.
Be sure the pump and power source have been properly lubricated, see LUBRICATION.
Fill the pump casing with clean liquid. Reinstall the fill plug (52) and tighten it.
Refer to OPERATION, Section C, before putting the pump back into service.
PAGE E - 10
Monitor the condition of the bearing lubri cant regularly for evidence of rust or mois ture condensation. This is especially im portant in areas where variable hot and cold temperatures are common.
For cold weather operation, consult the factory or a lubricant supplier for the recommended grade of oil.
Power Source
Consult the literature supplied with the power source, or contact your local power source repre sentative.
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
D MANSFIELD, OHIO
GORMAN‐RUPP OF CANADA LIMITED
D
ST. THOMAS, ONTARIO, CANADA
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