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GORMAN-RUPP S Series Manual

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S SERIES PUMPS
All Materials And Voltages
GORMAN‐RUPP PUMPS
PUBLICATION NUMBER MR-04319
August 8, 1995
Rev. C 08‐08‐15
S8D
www.grpumps.com
e
1995 Gorman‐Rupp Pumps
Printed in U.S.A.

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  • Page 1 PUBLICATION NUMBER MR-04319 August 8, 1995 Rev. C 08‐08‐15 S SERIES PUMPS All Materials And Voltages GORMAN‐RUPP PUMPS www.grpumps.com 1995 Gorman‐Rupp Pumps Printed in U.S.A.
  • Page 2 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:...

  • Page 3: Table Of Contents

    MR-04319 S SERIES PUMPS INTRODUCTION Thank You for purchasing a Gorman‐Rupp S quire special attention, to those which could dam­ Series Pump. Read this manual carefully to learn age equipment, and to those which could be dan­ how to safely maintain and service your pump. Fail­...
  • Page 4 S SERIES PUMPS MR-04319 RECORDING MODEL AND who operate and maintain their equipment as de­ scribed in this and the other accompanying litera­ SERIAL NUMBERS ture. The integral electric motor must be operated Please record the pump model, serial number, volt­...

  • Page 5: Safety - Section A

    4. Close the discharge valve (if throughout this manual to Gorman‐ used). Rupp S Series submersible motor driv­ en pumps. This manual will alert personnel to This pump is not designed to pump vol­ known procedures which require spe­...
  • Page 6 S SERIES PUMPS MR-04319 phase of the pump and control before tion of electrical parts not supplied or connecting the power source. Do not approved by the manufacturer, can re­ run the pump if the voltage is not within sult in severe injury or death and void the limits.

  • Page 7: Troubleshooting - Section B

    MR-04319 S SERIES PUMPS TROUBLESHOOTING - SECTION B Review all SAFETY information in Section A. The electrical power used to operate this pump is high enough to cause inju­ The following precautions should be ry or death. Obtain the services of a qu­...
  • Page 8 S SERIES PUMPS MR-04319 Table 1. Trouble Shooting Chart (cont.) TROUBLE POSSIBLE CAUSE PROBABLE REMEDY (AUTOMATIC MODE) Float type sensing device(s) tangled Check installation for free move­ or obstructed. ment of float. (CONT'D.) Defective liquid level sensing de­ Repair or replace defective unit(s).

  • Page 9: Electrical Testing

    MR-04319 S SERIES PUMPS Table 1. Trouble Shooting Chart (cont.) TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP RUNS WITH Pumping entrained air. Check liquid level in sump; check position of pump and liquid level EXCESSIVE NOISE OR VIBRATION sensing device(s). Damaged or unbalanced impeller.

  • Page 10: Motor And Power Cable Continuity

    S SERIES PUMPS MR-04319 be the same at each condition, as accurate­ place the tubing or potting and allow adequate dry­ ly as the meter will read. Nominal amperage ing time before putting the pump back into service. values are listed in Table 1, but these apply (See Power Cable Reassembly, Section E).

  • Page 11: Pump Maintenance And Repair - Section C

    MR-04319 S SERIES PUMPS PUMP MAINTENANCE AND REPAIR - SECTION C GENERAL INFORMATION Review all SAFETY information in Section A. All repairs to the pump motor must be per­ formed by a Gorman‐Rupp authorized Submersible repair facility or the factory.
  • Page 12 S SERIES PUMPS MR-04319 SECTION DRAWING Figure C-1. Typical S8D Series Pump Assembly PAGE C - 2 MAINTENANCE AND REPAIR...
  • Page 13 MR-04319 S SERIES PUMPS Typical S8D Series Pump Assembly Parts Identification List Refer to the separate Parts List Manual for serviceable parts, part numbers and quantities. ITEM ITEM PART NAME PART NAME 1ST STAGE DIFFUSER DEFORM HEX NUT 2ND STAGE DIFFUSER...
  • Page 14 S SERIES PUMPS MR-04319 SECTION DRAWING Figure C-2. Terminal Housing And Cable Assembly PAGE C - 4 MAINTENANCE AND REPAIR...

  • Page 15: Terminal Housing And Cable Assembly Parts Identification List

    MR-04319 S SERIES PUMPS Terminal Housing And Cable Assembly Parts Identification List Refer to the separate Parts List Manual for serviceable parts, part numbers and quantities. ITEM PART NAME #2/0 POWER CABLE - 50 FT. CABLE GRIP STUD HEX NUT...

  • Page 16: Pump End Disassembly

    S SERIES PUMPS MR-04319 PUMP END DISASSEMBLY assembly. Tag electrical circuits to pre­ vent accidental start‐up. References are to Figure C-1 and Figure C-2. Use the lifting device fitted on the pump to remove Review all SAFETY information in Section A.
  • Page 17 MR-04319 S SERIES PUMPS be determined and corrected before reassembly. Positioning Pump For Disassembly All gaskets and most O‐rings must be replaced if (Figure C-1) disturbed. Repair gaskets and O‐rings are listed in the Parts List manual. It is recommended that the pump be positioned upside‐down during disassembly.
  • Page 18 S SERIES PUMPS MR-04319 Remove the socket head capscrews (64) and sep­ ing the pump for disassembly. Use wood arate the vane plate from the first stage diffuser. blocks to support and level the pump while performing maintenance, and leave the lift­...

  • Page 19: Pump End Reassembly

    MR-04319 S SERIES PUMPS the shaft so the keystock engages the slots in the the procedure under Motor Disassembly locknut. Use a pipe wrench to turn the tool and re­ in this section. Do not attempt to loosen move the locknut and washer.
  • Page 20 S SERIES PUMPS MR-04319 and compression existed prior to disassembly. If fine file or hand honing stone to restore original sealing was faulty or questionable, the cause must contours. If the shaft is bent or severely damaged, be determined and corrected before reassembly.
  • Page 21 MR-04319 S SERIES PUMPS ROTOR O‐RING SHAFT INTERMEDIATE STATIONARY SEAT BELLOWS AND ROTATING RETAINING ASSY ELEMENT SPRING SEAL SPRING RETAINING RING RETAINER SEAL O‐RING PLATE STATIONARY STATIONARY SEAL SEAT ELEMENT ROTATING BELLOWS AND ELEMENT RETAINING ASSY SPRING IMPELLER KEY IMPELLER Figure C-5.
  • Page 22 S SERIES PUMPS MR-04319 may not stay in the bellows retainer when turned seal plate bore and the outer O‐ring. Keep the seal­ upside down, place a small amount of grease at ing face dry. equal spaces on the back of the element and posi­...
  • Page 23 MR-04319 S SERIES PUMPS Slide the seal spring over the shaft and bellows re­ (8 and 9), and secure the diffuser to the intermedi­ tainer. See Figure C-5 for proper order of seal as­ ate by torquing the hardware (8 and 11) evenly in a sembly.

  • Page 24: Motor Disassembly

    S SERIES PUMPS MR-04319 into place (see MOTOR DISASSEMBLY and MO­ MOTOR DISASSEMBLY TOR REASSEMBLY). Disassembly of the motor is rarely required except to replace the motor rotor, stator or bearings. Do After the impeller has been installed, coat the...
  • Page 25 MR-04319 S SERIES PUMPS Secure the pump in an upright position. Remove cable leads from the terminal collars, and separate the deformed locknuts (41) securing the terminal the terminal plate (16) from the terminal housing housing assembly to the motor housing assembly (8).
  • Page 26 S SERIES PUMPS MR-04319 Intermediate And Rotor Removal Before removing the bearings from the rotor shaft, clean and inspect the bearings in place as follows. (Figure C-1) Clean the bearings thoroughly in fresh cleaning solvent. Dry the bearings with filtered compressed Install three lifting eyes (not supplied) in the holes air and coat with light oil.

  • Page 27: Motor Reassembly

    MR-04319 S SERIES PUMPS The motor housing (27) must be heated with a NOTE torch to expand them enough for the stator to be Reuse of old O‐rings, gaskets, shaft seal parts will removed. Apply heat evenly to the outside of the result in premature leakage or reduce pump per­...
  • Page 28 S SERIES PUMPS MR-04319 keyway. If the bearings were removed, inspect the NOTE bearing areas for scoring or galling. Remove nicks Remove any drops of varnish from the ends of the and burrs with a fine file or emery cloth. Inspect the stator before installation to ensure proper stack‐up...
  • Page 29 MR-04319 S SERIES PUMPS cap (48). The bearing must be installed in the bear­ in the instructions accompanying the bear­ ing cap before assembling the bearing on the ing or as shown in Figure C-6. Improper shaft. Position the bearing as indicated in the in­...
  • Page 30 S SERIES PUMPS MR-04319 Lower the intermediate, rotor and shaft assembly pump motor and cable must be com­ down into the stator until the upper bearing (26) is pletely waterproof. Injury or death may fully seated in the bore of the motor housing.
  • Page 31 MR-04319 S SERIES PUMPS ing Terminal Plate Connections With Potting Compound. Use only materials and heating equip­ ment approved by Gorman‐Rupp for field repairs. Use only Dow‐Corning 737 Silicone Adhe­ sive (see the Parts List Manual for the part Before resealing the power and control cables, re­...
  • Page 32 S SERIES PUMPS MR-04319 Figure C-8. Terminal Housing Wiring Connections Sealing Terminal Housing Connections up over the leads of the power cable and control With Potting Compound cable. (Figure C-2) Secure each cable lead as described in the pre­ vious section. Slide the potting mold down over the terminal collars and onto the terminal plate.

  • Page 33: Final Assembly

    MR-04319 S SERIES PUMPS until the electrical connections are completely in­ sulated. Tamp the potting material to eliminate air bubbles and ensure the material has completely covered the area around the terminal posts. The motor cable leads must be connected...

  • Page 34: Vacuum Testing

    S SERIES PUMPS MR-04319 ket (28). Apply `Never‐Seez' or equivalent com­ uum gauge. Vacuum gauges are not sensitive pound on the flange studs (30), and secure the enough to detect minor leaks. flange with the nuts (31). It is recommended that a vacuum pump be used to draw the vacuum on the cavities.

  • Page 35: Lubrication

    MR-04319 S SERIES PUMPS If the oil level is abnormally low, or if the oil contains LUBRICATION water, dirt, or appears cloudy, the lower seal or gaskets may require replacement. If the oil is clear, remove the pipe nipple previously installed and re­...
  • Page 36 S SERIES PUMPS MR-04319 Table C-3. Pump Oil Specifications Specifications: Type ......
  • Page 37 For Warranty Information, Please Visit www.grpumps.com/warranty or call: U.S.: 419-755-1280 Canada: 519-631-2870 International: +1-419-755-1352 GORMAN‐RUPP PUMPS...

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S8d series

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