GORMAN-RUPP 80 Series Self Priming Pump Instruction Manual

GORMAN-RUPP80 Series Self Priming Pump

80 Series Pump – Model 81 1/2E9-B
The 80 Series Pump Model 81 1/2E9-B is manufactured by The Gorman-Rupp Company based in Mansfield, Ohio, USA. This pump is commonly used for water transfer applications and is suitable for use in residential, commercial, and industrial settings.

Installation Instructions

1. Before installation, inspect the pump for any damage that may have occurred during shipping. Refer to the Preinstallation Inspection section in the manual for a list of things to look for.

2. Position the pump in a location that is level and stable.
   Follow the instructions in the Positioning Pump section to ensure proper placement.

3. Refer to the Pump Dimensions section to determine the appropriate pipe size for your installation.

4. Connect the suction and discharge pipes to the pump. Use appropriate fittings and valves as needed.

5. Prime the pump by filling the suction pipe and pump casing with water. Follow the instructions in the Priming section of the manual.

6. Start the pump and check for proper rotation. Follow the instructions in the Starting section of the manual.

Product Usage Instructions

To operate the pump, follow these steps:

1. Ensure that the pump is properly primed before starting.
2. Start the pump and monitor for any unusual sounds or vibrations. If you notice anything abnormal, stop the pump immediately and refer to the Troubleshooting section of the manual.
3. Regularly inspect the pump and perform any necessary maintenance as outlined in the Preventive Maintenance section of the manual.
4. If you need to disassemble or repair the pump, refer to the Pump Maintenance and Repair section of the manual for detailed instructions.

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:

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 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 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. It is designed for handling mildly corrosive industrial residues and slurries containing specified entrained solids. The basic material of construction for wetted parts is type 316 stainless steel..
• 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 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

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:

DANDER
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.

WARNING
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.

CAUTION
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.

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.

WARNING
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.

WARNING

• This pump is designed to handle mildly corrosive industrial residues and slur-ries containing specified entrained sol-ids. Do not attempt to pump liquids for which the pump, driver and/or controls have not been approved, or which may damage the pump or endanger person-nel 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.
• 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.
• 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.

Overheated pumps can cause severe burns and injuries. If overheating of the pump occurs:

1.  Stop the pump immediately.
2. Ventilate the area.
3. llow 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.

WARNING
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. Never run this pump backwards. Be cer-tain that rotation is correct before fully engaging the pump.

CAUTION
Pumps and related equipment must be in-stalled and operated according to all na-tional, local and industry standards.

INSTALLATION

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.
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. 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 specific application. This pump is equipped with a Gorman-Rupp double grease lubricated seal, therefore the maximum incoming pressure must be limited to 10 p.s.i. For further assistance, contact your Gorman-Rupp distributor or the Gorman-Rupp Company.

Pump Dimensions
See Figure 1 for the approximate physical dimen-sions of this pump.

OUTLINE DRAWING

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:

• Inspect the pump for cracks, dents, damaged threads, and other obvious damage.1
• Check for and tighten loose attaching hard-ware. Since gaskets tend to shrink after dry-ing, check for loose hardware at mating sur-faces.
• Carefully read all tags, decals, and markings on the pump assembly, and perform all duties indicated.

CAUTION
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. 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. 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. 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

WARNING
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
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.

CAUTION
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 mounting is essential for proper operation. The pump may have to be supported or shimmed to provide for level operation or to eliminate vibration.

SUCTION AND DISCHARGE PIPING
Pump performance is adversely effected by increased suction lift, discharge elevation, and friction losses. See the performance curve on Page E−1 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. Using piping couplings in suction lines is not recommended.

Line Configuration
Keep suction and discharge lines as straight as possible to minimize friction losses. Make mini-mum use of elbows and fittings, which substantially 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 exactly with the pump port. Never pull a pipeline into place by tightening the flange bolts and/or couplings.
Lines near the pump must be independently supported 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 that could affect pump priming, 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 installed with the flat part of the reducers uppermost to avoid creating air pockets. Valves are not normally used in suction lines, but if a valve is used, install it with the stem horizontal to avoid air pockets.

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 5/8 inch (15,8 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 recommendations 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 diameter 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 suction inlet because the inflow will carry air down into the sump, and air entering the suction line will reduce pump efficiency. If it is necessary to position inflow close to the suction 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. velocity.

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).

Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity

DISCHARGE LINES

Siphoning
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.
With high discharge heads, it is recommended that a throttling valve and a system check valve be installed in the discharge line to protect the pump from excessive shock pressure and reverse rotation when it is stopped.

CAUTION
If the application involves a high discharge head, gradually close the discharge throttling valve before stopping the pump.

Bypass Lines
If a system check valve is used due to high discharge 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 prevent 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.

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. Misalignment 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.

warning
When checking alignment, disconnect the power source to ensure that the pump will remain inoperative

caution
Adjusting the alignment in one direction may alter the alignment in another direction. 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 degrees. The coupling is in alignment when the hub ends are the same distance apart at all points (see Figure 3A).

Aligning Spider Type Couplings

Align non-spider type couplings by using a feeler gauge or taper gauge between the coupling halves every 90 degrees. 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 misalignment.

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 pulleys 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.

Tighten the belts in accordance with the belt manufacturer’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 ratio; overspeeding the pump may damage both pump and power source. 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 personnel.

V-BELT TENSIONING

General Rules of Tensioning
For new v-belts, check the tension after 5, 20 and 50 hours of operation and re-tension as required (see the following procedure for measuring belt tension). Thereafter, check and re-tension if required monthly or at 500 hour intervals, whichever comes first. Ideal v-belt tension is the lowest tension at which the belt will not slip under peak load conditions. Do not over- tension v-belts. Over-tensioning will shorten both v-belt and bearing life. Under-tensioning will cause belt slippage. Always keep belts free from dirt, grease, oil and other foreign material which may cause slippage.

Tension Measurement
Correct v-belt tension can be achieved using a vbelt tension tester and Table 1 or 2. Use the tables to find the v-belt size (cross-section), the smallest sheave diameter, the belt type for your application. The corresponding deflection force required for  new or used belts is shown opposite the RPM range of the pump.

The ratio of deflection to belt span is 1:64 for both ASA and metric units. Therefore, a belt with a span of 64 inches would require a deflection of 1 inch at the force shown on the Tables for your particular application. For example, if the span as measured in Figure 4 is 32 inches (813 mm), the v-belt cross-section is C, the smallest sheave diameter is 8 inches, the pump speed is 1250 RPM, and the belts are uncogged Yy-T type, then 11.5 lbs. of force on the tensioner should show 1/2-inch (12,7 mm) of deflection. A tension tester is available as an option from Gorman- Rupp (P/N 29513−001). Other tension testers are available from your local belt/sheave distributor, and work on a similar principal. To use the Gorman-Rupp tensioner, measure the belt span as shown in Figure 4. Position the bottom of the large O-ring on the span scale of the tension er at the measured belt span. Set the small O-ring on the deflection force scale to zero. Place the tension tester squarely on the belt at the center of the belt span. Apply force on the plunger, perpendicular to the belt span, until the bottom of the large O-ring is even with the top of the next belt, or with the bottom of a straight edge laid across the sheaves Read the force applied from the bottom of the small O-ring on the deflection force scale. Compare this force with the value shown in Table 1 or 2 and adjust the tension accordingly. Note that the tension for new belts is higher than that for used belts to allow for expected belt stretching. Do not over- tension used belts to the higher deflection forces shown for new belts

Cross Section

|

Smallest Sheave Diameter Range

|

R.P.M.

Range

| Belt Deflection Force
---|---|---|---
Uncogged Hy-T Belts & Uncogged Hy-T Torque Team| Cogged Torque-Flex & Machined Edge torque Team Belts
Used Belt| New Belt| Used Belt| New Belt

A,AX

|

3.0 – 3.6

| 1000-2500

2501-4000

| 3.7

2.8

| 5.5

4.2

| 4.1

3.4

| 6.1

5.0

3.8 – 4.8| 1000-2500

2501-4000

| 4.5

3.8

| 6.8

5.7

| 5.0

4.3

| 7.4

6.4

5.0 – 7.0| 1000-2500

2501-4000

| 5.4

4.7

| 8.0

7.0

| 5.7

5.1

| 9.4

7.4

B,BX

| 3.4 – 4.2| 860-2500

2501-4000

| | | 4.9

4.2

| 7.2

6.2

4.4 – 5.6

| 860-2500

2501-4000

| 5.3

4.5

| 7.9

6.7

| 7.1

7.1

| 10.5

9.1

5.8 – 8.6

| 860-2500

2501-4000

| 6.3

6.0

| 9.4

8.9

| 8.5

7.3

| 12.6

10.9

C,CX

|

7.0 – 9.0

| 500-1740

1741-3000

| 11.5

9.4

| 17.0

13.8

| 14.7

11.9

| 21.8

17.5

9.5 – 16.0

| 500-1740

1741-3000

| 14.1

12.5

| 21.0

18.5

| 15.9

14.6

| 23.5

21.6

D

|

12.0 – 16.0

| 200-850

851-1500

| 11.5

9.4

| 17.0

13.8

| 14.7

11.9

| 21.8

17.5

18.0 – 20.0

| 200-850

851-1500

| 30.4

25.6

| 45.2

38.0

| |

3V,

3VX

| 2.2 – 2.4| 1000-2500

2501-4000

| | | 3.3

2.9

| 4.9

4.3

2.65 – 3.65| 1000-2500

2501-4000

| 3.6

3.0

| 5.1

4.4

| 4.2

3.8

| 6.2

5.6

4.12 – 6.90

| 1000-2500

2501-4000

| 4.9

4.4

| 7.3

6.6

| 5.3

4.9

| 7.9

7.3

5V,

5VX

|

4.4 – 6.7

| 500-1749

1750-3000

3001-4000

| | | 10.2

8.8

5.6

| 15.2

13.2

8.5

7.1 – 10.9| 500-1740

1741-3000

| 12.7

11.2

| 18.9

16.7

| 14.8

13.7

| 22.1

20.1

11.8 – 16.0| 500-1740

1741-3000

| 15.5

14.6

| 23.4

21.8

| 17.1

16.8

| 25.5

25.0

8V

|

12.5 – 17.0

| 200-850

851-1500

| 33.0

26.8

| 49.3

39.9

| |
18.0 – 22.4| 200-850

851-1500

| 39.6

35.3

| 59.2

52.7

| |

Sheave Diameter (Millimeters) Deflection Force (KG.)

Cross Section

|

Smallest Sheave Diameter Range

|

R.P.M.

Range

| Belt Deflection Force
---|---|---|---
Uncogged Hy-T Belts & Uncogged Hy-T Torque Team| Cogged Torque-Flex & Machined Edge torque Team Belts
Used Belt| New Belt| Used Belt| New Belt

A,AX

|

75 – 90

| 1000-2500

2501-4000

| 1.7

1.3

| 2.5

1.9

| 1.9

1.5

| 2.8

2.3

91 – 120| 1000-2500

2501-4000

| 2.0

1.7

| 3.1

2.6

| 2.3

2.0

| 3.4

2.9

125 – 175| 1000-2500

2501-4000

| 2.4

2.1

| 3.6

3.2

| 2.6

2.3

| 4.3

3.4

B,BX

| 85 – 105| 860-2500

2501-4000

| | | 2.2

1.9

| 3.3

2.8

106 – 140

| 860-2500

2501-4000

| 2.4

2.0

| 3.6

3.0

| 3.2

3.2

| 4.8

4.1

141 – 220

| 860-2500

2501-4000

| 2.9

2.7

| 4.3

4.0

| 3.9

3.3

| 5.7

4.9

C,CX

|

175 – 230

| 500-1740

1741-3000

| 5.2

4.3

| 7.7

6.3

| 6.7

5.4

| 9.9

7.9

231 – 400

| 500-1740

1741-3000

| 6.4

5.7

| 9.5

8.4

| 7.2

6.6

| 10.7

9.8

D

|

305 – 400

| 200-850

851-1500

| 11.3

9.6

| 16.8

14.2

| |

401 – 510

| 200-850

851-1500

| 13.8

11.6

| 20.5

17.2

| |

3V,

3VX

| 55 – 60| 1000-2500

2501-4000

| | | 1.5

1.3

| 2.2

2.0

61 – 90| 1000-2500

2501-4000

| 1.6

1.4

| 2.3

2.0

| 1.9

1.7

| 2.8

2.5

91 – 175

| 1000-2500

2501-4000

| 2.2

2.0

| 3.3

3.0

| 2.4

2.2

| 3.6

3.3

5V,

5VX

|

110 – 170

| 500-1749

1750-3000

3001-4000

| | | 4.6

4.0

2.5

| 6.9

6.0

3.9

171 – 1275| 500-1740

1741-3000

| 5.8

5.1

| 8.6

7.6

| 6.7

6.2

| 10.0

9.1

276 – 400| 500-1740

1741-3000

| 7.0

6.6

| 10.6

9.9

| 7.8

7.6

| 11.6

11.3

8V

|

315 – 430

| 200-850

851-1500

| 15.0

12.2

| 22.4

18.1

| |
431 – 570| 200-850

851-1500

| 18.0

16.0

| 26.8

23.9

| |

OPERATION

Review all SAFETY information in Section A. Follow the instructions on all tags, labels and decals attached to the pump

WARNING
This pump is designed to handle mildly corrosive industrial residues and slurries containing specified entrained solids. Do not attempt to pump liquids for which the pump, driver and/or controls have not been approved, or which may damage the pump or endanger personnel as a result of pump failure.

CAUTION
Pump speed and operating condition points must be within the continuous performance range shown on the curve (see Section E, Page 1).

PRIMING
Install the pump and piping as described in INSTALLATION. Make sure that the piping connections are tight, and that the pump is securely mounted. Check that the pump is properly lubricated (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.

CAUTION
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 considerable length of time.
3. The liquid in the pump casing has evaporated.

Once the pump casing has been filled, the pump will prime and reprime as necessary

WARNING
After filling the pump casing, reinstall and tighten the fill plug. Do not attempt to operate the pump unless all connecting piping is securely installed. Otherwise, liquid in the pump forced out under pressure could cause injury to personnel. 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
Consult the operations manual furnished with the power source.

Rotation
The correct direction of pump rotation is counterclockwise 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 .

CAUTION

Only operate this pump in the direction indicated by the arrow on the pump body and on the accompanying decal. Otherwise, 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, remove 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 cooling 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 literature supplied with the motor for specific instructions

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 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 pressure 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 surfaces, or at pump connections or fittings. Keep all line connections and fittings tight to maintain maximum pump efficiency.

Liquid Temperature And Overheating
The maximum liquid temperature for this pump is 160 F (71C). 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 rupture or explode. If overheating occurs, stop the pump and allow it to completely cool before servicing it. Refill the pump casing with cool liquid.

WARNING
Do not remove plates, covers, gauges, pipe plugs, or fittings from an overheated pump. Vapor pressure within the pump can cause parts being disengaged to be ejected with great force. Allow the pump to completely 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 installed, 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 necessary,
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 operating 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 discharge 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.

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 remain inoperative.

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 rotating parts. If the pump will be idle for more than a few hours, or if it has been pumping liquids containing 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 preventing 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.

BEARING TEMPERATURE CHECK
Bearings normally run at higher than ambient temperatures because of heat generated by friction. Temperatures up to 160F (71C) are considered normal for bearings, and they can operate safely to at least 180F (82C). Checking bearing temperatures by hand is inaccurate. Bearing temperatures can be measured accurately 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 correct level (see LUBRICATION in Section E). Bearing 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. Continued operation should bring the temperatures down to normal levels

TROUBLESHOOTING

Review all SAFETY information in Section A. 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 opening 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| Not enough liquid in cas- ing.| Add liquid to casing. See

PRIMING.

| Suction check valve contaminated or| Clean or replace check valve.
| damaged.|
| Air leak in suction line.| Correct leak.
| Lining of suction hose collapsed.| 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| Clean valve.
| clogged or binding.|
| 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.
PUMP STOPS OR| Air leak in suction line.| Correct leak.
FAILS TO DELIVER

RATED FLOW OR

| Lining of suction hose collapsed.| Replace suction hose.
PRESSURE| Leaking or worn seal or pump gasket.| Check  pump  vacuum.  Replace
| | leaking or worn seal or gasket.

TROUBLE

|

POSSIBLE CAUSE

|

PROBABLE REMEDY

---|---|---
PUMP STOPS OR FAILS TO DELIVER RATED FLOW OR

PRESSURE (cont.)

| Suction intake not submerged at proper level or sump too small.

Impeller or other wearing parts worn

| Check installation and correct submergence as needed.

Replace worn or damaged parts.

| or damaged.| Check that impeller is properly
| | centered and rotates freely.
| Strainer clogged.| Check strainer and clean if neces-
| | sary.
| Impeller clogged.| 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 REQUIRES| Pump speed too high.| Check driver output; check that
TOO MUCH| | sheaves or couplings are correctly
POWER| | sized.
| Discharge head too low.| Adjust discharge valve.
| Liquid solution too thick.| Dilute if possible.
PUMP CLOGS| Discharge flow too slow.| Open discharge valve fully to in-
FREQUENTLY| | crease flow rate, and run engine at
| | maximum governed speed.
| Suction  check  valve  or  foot  valve| Clean valve.
| clogged or binding.|
EXCESSIVE NOISE| Cavitation in pump.| Reduce suction lift and/or friction losses in suction line. Record vac- uum 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.
| Suction and discharge lines not prop- erly supported.| Check    piping installation              for proper support.
BEARINGS RUN| Bearing temperature is high, but within| Check bearing temperature regu-
TOO HOT| limits.| larly to monitor any increase.
| Low or incorrect lubricant.| Check for proper type and level of lu-
| | bricant.
| Drive misaligned.| Align drive properly.
| Pump speed too high.| Reduce speed of power source.
| Bearing(s) frozen.| Disassemble  pump  and  check
| | bearing(s).

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 preventive maintenance schedule will help assure trouble-free performance and long life from your Gorman-Rupp pump. For specific questions concerning 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 inspections can indicate problems that can be corrected before system damage or catastrophic failure occurs. 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 sameduty 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 inspections should be performed at the intervals shown on the chart below. Critical applications should be inspected more frequently.

Preventive Maintenance Schedule

Item

| Service Interval*
Daily| 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 C I I I I I

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.

PUMP MAINTENANCE AND REPAIR

MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK OPERATING PERFORMANCE

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 difference due to such factors as viscosity, specific gravity, elevation, temperature, and impeller trim. 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 performance or part numbers. Pump speed and operating condition points must be within the continuous performance range shown on the curve.

SECTION DRAWING

PARTS LIST
Pump Model 81 1/2E9−B (From S/N 334698 Up)

ITEM NO. PART NAME PART NUMBER QTY MAT’L CODE

1. PUMP CASING 6477 17070 1
2. IMPELLER 6479A 17070 1
3. SEAL ASSY 25271−715 −−− 1
4. FILL PLUG ASSY 48271−090 −−− 1
5. RD HD MACH SCREW X#10−02 17090 1
6. LOCKWASHER J#10 17090 1
7. STUD C0605 17090 6
8. HEX NUT D06 17090 6
9. HEX HD CAPSCREW B0605 15991 4
10. LOCKWASHER J06 15991 4
11. HEX NUT D06 15991 4
12. RD HD MACHINE SCREW X0403 15991 3
13. LOCK WASHER J04 15991 3
14. SLINGER RING 31131−062 19410 1
15. INBOARD BALL BEARING S528 −−− 1
16. OUTBOARD BALL BRG S528 −−− 1
17. SHAFT KEY N0303 15990 1
18. IMP ADJ SHIM SET 5889 17090 1
19. SPACER WASHER 6087A 17090 1
20. IMPELLER SHAFT 10673 17130 1
21. RETAINING RING S494 −−− 1
22. BEARING ADJ SHIM SET 2X 17090 1
23. BEARING HOUSING 10671 10010 1
24. SEAL CAP 7166 10010 1
25. INTERMEDIATE BRACKET 6103E 17070 1
26. CASING GASKET 6103GB 19410 1
27. VANE PLATE 7724 17070 1
28. PIPE PLUG P06 17090 1
29. RD HD MACH SCREW X#10−05 17090 1
30. PIPE PLUG P04 17090 1
31. PIPE PLUG P04 17090 1
32. JAM NUT AT07S 17090 1
33. NAME PLATE BM#04−03 17000 1
34. DRIVE SCREW BM#04−03 17000 4
35. VANE PLATE O-RING 25153−225 −−− 1

NOT SHOWN:

• G-R DECAL GR−03 −−− 1
• ROTATION DECAL 2613M −−− 1
• INSTRUCTION TAG 38817−046 −−− 1
• SUCTION STICKER 6588AG −−− 1
• PRIMING STICKER 6588AH −−− 1
• DISCHARGE STICKER 6588BJ −−− 1

PUMP AND SEAL DISASSEMBLY AND REASSEMBLY

Review all SAFETY information in Section A. Follow the instructions on all tags, label and decals attached to the pump. This pump requires little service due to its rugged, minimum-maintenance design. However, if it becomes necessary to inspect or replace the wearing parts, follow these instructions which are keyed to the sectional view (see Figure 1) and the accompanying parts list. This manual will alert personnel to known procedures 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 personnel to ensure that only safe, established maintenance procedures are used, and that any procedures not addressed in this manual are performed only after establishing that neither personal safety nor pump integrity are compromised by such practices. 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.

WARNING

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 opening any covers, plates, or plugs.
5. Close the suction and discharge valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.

WARNING

Use lifting and moving equipment in good repair and with adequate capacity to prevent injuries to personnel or damage to equipment. Suction and discharge hoses and piping must be removed from the pump before lifting.

Pump Casing and Vane Plate Removal
Before attempting to service the pump, remove the pump casing drain plug (28) and drain the pump. Clean and reinstall the drain plug. To service the impeller (2), vane plate (27) or seal assembly (3), disconnect the suction and discharge piping. Remove the nuts (8) securing the pump casing (1) to the intermediate (23). Remove the pump casing by pulling straight away. Remove the casing gasket (26) and vane plate Oring (35). To remove the vane plate, disengage the hardware (5, 6, 29 and 30). Use a thin-bladed putty knife or other suitable tool to separate the vane plate from the intermediate.

Impeller Removal
Immobilize the impeller by wedging a block of wood or a brass rod between the vanes. Remove the impeller jam nut (32). Install the shaft key (17). Install a lathe dog on the drive end of the shaft (20) with the V” notch positioned over the shaft key. With the impeller rotation still blocked, see Figure 2 and use 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). Use caution not to damage the shaft or keyway. When the impeller breaks loose, remove the lathe dog, key and wood block. Unscrew the impeller in a counterclockwise direction.

Inspect the impeller and replace it if cracked or badly worn. Slide the impeller adjusting shims (18) off the impeller shaft. Tie and tag the shims, or measure and record their thickness for ease of reassembly.

Seal Removal
Remove the seal washer (19). Slide the rotating portion of the seal assembly (3) off the shaft. Remove the hardware (9, 10 and 11) securing the intermediate (25) to the bearing housing (23). Slide the intermediate and stationary portion of the seal off the shaft as a unit. Remove the hardware (12 and 13) and separate the seal cap (24) and stationary seal components from the intermediate. If no further disassembly is required, see Seal

Reassembly and Installation.
Shaft And Bearing Removal And Disassembly When the pump is properly operated and maintained, the bearing housing should not require disassembly. Disassemble the shaft and bearings only when there is evidence of wear or damage.

CAUTION
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 slinger ring (14) from the shaft. Remove the bearing housing 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 retaining ring (21) from the bearing housing bore. Remove the bearing shim set (22); 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, and tap the shaft and assembled bearings (15 and 16) out of the bearing housing. After removing the shaft and bearings, clean and inspect the bearings in place as follows.

CAUTION
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 bearings are removed. Clean the bearing housing, shaft and all component parts (except the bearings) with a soft cloth soaked in cleaning solvent. Inspect the parts for wear or damage and replace as necessary.

WARNING
Most cleaning solvents are toxic and flammable. Use them only in a well- ventilated area free from excessive heat, sparks, and flame. Read and follow all precautions printed on solvent containers. 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. Replace the shaft if defective. Clean the bearings thoroughly in fresh cleaning solvent. Dry the bearings with filtered compressed air and coat with light oil

CAUTION
Bearings must be kept free of all dirt and foreign material. Failure to do so will greatly shorten bearing life. Rotate the bearings by hand to check for roughness or binding. If rotation is rough, replace the bearings. The bearing tolerances provide a tight press fit onto the shaft and a snug slip fit into the bearing housing. Replace the bearings, shaft, or bearing housing if the proper bearing fit is not achieved. If bearing replacement is required, use a bearing 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 bearings as indicated in Shaft and Bearing Removal and Disassembly

CAUTION
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 (15 and 16) may be heated to ease installation. An induction heater, electric oven, or hot plate may be used to heat the bearings. Bearings should never be heated with a direct flame or directly on a hot plate. Heat the bearings to a uniform temperature no higher than 250F (120C), and slide the bearings onto the shaft, one at a time, until they are fully seated. This should be done quickly, in one continuous motion, to prevent the bearings from cooling and sticking on the shaft.

WARNING
Use caution when handling hot bearings 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 occurred, use a suitably sized sleeve and a press to reposition the bearings. If heating the bearings is not practical, use a suitably sized sleeve and an arbor (or hydraulic) press to install the bearings on the shaft.

CAUTION
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 bearing housing until the inboard bearing (15) is fully seated against the bore shoulder

CAUTION
When installing the shaft and bearings into the bearing bore, push against the outer race. Never hit the balls or ball cage. Install the same thickness of bearing adjusting shims (22) as previously removed. Reinstall the retaining ring (21) and check shaft endplay.

NOTE
Shaft endplay should be .002 to .010 inch (0,05 to 0,25 mm). Add or remove bearing adjusting shims to obtain this endplay. Install the slinger ring (14). Install any leveling shims used under the bearing housing feet. Secure the bearing housing to the base using the previously removed mounting hardware

Seal Reassembly and Installation

Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent. Most cleaning solvents are toxic and flammable. Use them only in a well- ventilated area free from excessive heat, sparks, and flame. Read and follow all precautions printed on solvent containers. The seal is not normally reused because wear patterns on the finished faces cannot be realigned during reassembly. This could result in premature failure. If necessary to reuse an old seal in an emergency, 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. Inspect the seal components for wear, scoring, grooves, and other damage that might cause leakage. Clean and polish the seal area of the shaft. Small nicks and burrs can be removed using a fine file or emery cloth. If any components 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 seal area of the shaft with water or a very small amount of oil, and apply a drop of light lubricating oil on the finished faces. Assemble the seal as follows (see Figure 3).

CAUTION
This seal is not designed for operation at temperatures above 160F (71C). Do not use at higher operating temperatures. Install the sealing washers and stationary seal seat in the intermediate the seal cap as shown in Figure 3. Secure the seal cap to the intermediate with the hardware (12 and 13). Carefully slide the assembled intermediate and stationary portion of the seal over the shaft (20) until the intermediate seats against the bearing housing (23). Use caution not to damage the stationary seat on the shaft threads. Secure the intermediate to the bearing housing with the hardware (9, 10 and 11). Slide the rotating portion of the seal onto the shaft until the seal faces contact and install the seal washer (19).

Impeller Installation
Inspect the impeller, and replace it if cracked or badly worn. Install the same thickness of impeller shims (18) as previously removed. Apply ‘Loctite Retaining Compound No. 242’ or equivalent compound on the shaft threads and screw the impeller onto the shaft until tight. A clearance of .008 to .015 inch ( 0,20 to 0,38mm) between the impeller and the vane plate (27) is necessary for maximum pump efficiency. Position the vane plate over the impeller, and use a feeler gauge to measure this clearance. Add or remove impeller shims until the proper clearance is achieved. After the impeller clearance is set, secure the impeller to the shaft with the impeller nut (32).

Vane Plate and Pump Casing Installation
Before installing the vane plate, clean all of the old adhesive from the mating surfaces of the vane plate and the intermediate. These surfaces must be completely clean before installation. Apply ‘3-M Adhesive EC-847’ or equivalent compound to the back of the vane plate, and secure the vane plate to the intermediate with the hardware (5, 6, 29 and 30). Check the impeller- to-vane plate clearance as described in Impeller Installation. Install the vane plate O-ring (35) and the pump casing gasket (26). Carefully slide the pump casing over the vane plate, and secure it to the intermediate with the nuts (8). Install the shaft key (17).

Final Pump Assembly
Be sure the pump and power source are securely mounted to the base. Reconnect the power source to the pump. Install the suction and discharge lines and open all valves. Make certain that all piping connections are tight, properly supported and secure. 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.

LUBRICATION

Seal Assembly
The seal assembly is lubricated by the medium being pumped. No additional lubrication is required.

Bearings
The bearings in this pump are lubricated from the manufacturer and permanently sealed. No additional lubrication is required.

Power Source
Consult the literature supplied with the power source, or contact your local power source representative.

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

References

• Industry-Leading Warranty
• Welcome to Gorman-Rupp Pumps
• Industry-Leading Warranty

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