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WDM GE Series Operation Manual

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Operation Manual
GE & GU Pumps

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Summary of Contents for WDM GE Series

  • Page 1 Operation Manual GE & GU Pumps...
  • Page 2 WDM is not responsible for any damage or accidents that occur when the instructions given in this manual have not been followed. The warranty is only valid when using WDM original spare parts. Failure to follow these guidelines in installing and starting your...

  • Page 3: Safety Recommendations

    GS Pumps. 2. Safety Recommendations. • WDM pumps are designed to operate safely when used and maintained according to this manual. • Rotating parts of the pumps are dangerous and can cause injury. Operators and maintenance personnel should be aware of and follow safety recommendations.
  • Page 4 Operation Manual. • The pump should not be operated without the proper safety devices in place. If such devices are removed during service and repair work, make sure they are replaced before operating the pump again. • Do not operate the pump when holding the cable assembly. •...

  • Page 5: Installation

    GS Pumps. Installation. Location. • Place the pump as close to the suction source as possible. • Suction piping should be as short and direct as possible. • Place the pump below the water level whenever possible. This will facilitate priming, ensures a constant flow of liquid, and provides a positive suction.

  • Page 6: Suction (Inlet) Piping

    Operation Manual. pump’s base plate should be placed on loose fitting wedges or shims located near each anchor bolt. Intervals between the wedges or shims should be less than 24” per side. • Wedges or shims should raise the bottom of the pump about ¾...
  • Page 7 GS Pumps. The following precautions should be noted when installing suction piping: • Suction piping should be as direct as possible, and ideally the length should be at least ten times the pipe diameter. • Short suction piping can be the same diameter as the suction opening.
  • Page 8 Operation Manual. • In order to shut down the pump for maintenance or removal, a valve should be installed in the suction line. If more than one pump is on the same suction line, multiple values should be placed in the line in order to shut down each pump individually.
  • Page 9 GS Pumps. Negative suction installation Diagram Shut-off Expansion Valve Joint Check Valve Concentric Reducer Elbow Piping Support Eccentric Reducer Foot Valve & Strainer...
  • Page 10 Operation Manual. Positive Suction installation Diagram 1. Y fitting 2. Tank 3. Shut-off Valve 4. Elbow Expansion Joint Shut-off Valve Check Valve Concentric Reduction Eccentric Reduction Support Discharge (outlet) piping. • Discharge line should be at least the same diameter as discharge opening for short piping, for longer piping size should be 1 or 2 sizes larger according to piping length.

  • Page 11: Electrical Connections

    The green wire is the grounding wire. ATTENTION. Always use the installed handle, never the cord, to lift the pump, ATTENTION. WDM does not supply all the accessories (valves, gauges, pipes, extensions, etc.) mentioned in this operation manual and installation.

  • Page 12: Packing Gland Adjustment

    All pumps on GE & GU line of WDM Pumps are equipped with mechanical seals matched to the specific conditions for which the pump was sold.
  • Page 13 GS Pumps. Use the following diagrams as guidance for correct alignment. Angular Alignment Parallel Alignment Correct Incorrect...

  • Page 14: Electrical Installation

    Operation Manual. Install coupling and guard Electrical installation. • A device that can disconnect both the controller and motor from their power sources should be installed. Such devices are typically circuit breakers or fusible disconnect switches. The motor starter should be seen from the disconnecting device, and the two should never be more than about 50 feet apart from each other.

  • Page 15: Pre-Start Checklist

    In case of overload, the cause should be reviewed and corrected. Priming. • As WDM GS pumps are not self-priming, they must be fully primed before starting. To prime the pump completely fill the suction line with liquid. •...

  • Page 16: Motor Rotation

    Operation Manual. been in storage for any length of time, whether used or new, then consult the motor instructions before starting. Use the motor data plate to check the voltage, phase, and line circuit frequency. • In order to make sure it rotates freely, use your hands to turn the rotating element..

  • Page 17: Starting The Pump

    GS Pumps. Starting the pump. WARNING. If a pump is operated without an approved coupling guard in place, it may result in injury to personnel operating the pump. Coupling guard should be installed on flexible coupled units. Once the pump is primed, start the pump by turning on the power to the motor as instructed in the motor manual and follow this recommendation: •...

  • Page 18: Pump Shutdown

    Operation Manual. Pump shutdown. The following shutdown procedures will apply in most normal shut- downs for the WDM pumps types GE and GU. If pump will be inoperative for an extended length of time, follow storage procedures: • Close the discharge gate valve slowly to prevent hydraulic shock, and then cut power to the motor.

  • Page 19: Maintenance

    GS Pumps. Maintenance. WARNING. If equipment is rotating, do not attempt to complete any maintenance, inspection, repair, or cleaning until rotation has stopped as such actions could result in injury to personnel.. Before attempting any inspection or repair on the pump, the driver controls must be in the “OFF”...
  • Page 20 Operation Manual. One-half to one cubic inch of grease is sufficient for motors 5.0 hp and under, with proportionately more grease for greater HP motors. • “Sealed-for-life” bearings do not require any further lubrication during the life of the motor. These are most fractional motors and some integral frame motors.
  • Page 21 GS Pumps. Service Engine and mechanical seal. The first oil change should occur after the first 200 hours of operation. In order to change the oil, remove the drain plug and the filler plug (or vent plug) from the bottom of the bearing cover, (located at the top of the housing).

  • Page 22: Disassembling The Pump

    Operation Manual. Disassembling the pump Below are outlined instructions to completely disassemble the pump. In order to perform maintenance, only disassemble as far as required. • Turn off power. • Drain system, including. flushing, if necessary. • Closed coupled units and remove bolts that hold down the motor.
  • Page 23 GS Pumps. • Observe the following when reassembling the bearing frame. • Replace lip seals if worn or damaged. • Replace bearings if loose, rough or noisy when rotated. • Check shaft for runout at the sleeve area. Below is a chart with the specifications necessary for the identification of each of the pump parts listed above.
  • Page 24 Operation Manual. ITEM Description Bearing Frame Casing (Volute) Seal Support Impeller Shaft Mechanical Seal Shaft Sleeve Backplate Gasket Casing Gasket Slinger Back Bearing Front Bearing Back Lip Seal Front Lip Seal Back Snap Ring Front Snap Ring Back Ext Snap Ring Backplate Hex Bolt Casing Hex Bolt Impeller Hex Bolt...
  • Page 25 GS Pumps. GE Parts List...
  • Page 26 Operation Manual. ITEM Description Motor bracket Casing (Volute) Steel Motor Base Impeller Motor Mechanical Seal Shaft Sleeve Backplate Gasket Casing Gasket Slinger Ext Snap Ring Backplate Hex Bolt Casing Hex Bolt Impeller Hex Bolt Motor Bracket Hex Bolt Backplate Lock Washer Impeller Lock Washer Drain Plug Priming Plug...

  • Page 27: Reassembly Of Pumps

    GS Pumps. Reassembly of pumps. • Before reassembly, all parts should be thoroughly cleaned. • To identify required replacement items refer to the parts list. When ordering the parts, have the pump serial or catalog number available. • To reassemble follow the reverse of the disassembly instructions.
  • Page 28 Operation Manual. 10. Increase pipe size to pump 10. Suction piping too small inlet size or larger. 11. Casing gasket leaking 11. Replace. 12. Suction or discharge line 12. Open. valves closed. 13. Piping is fouled or 13. Clean or replace. damaged.

  • Page 29: Warranty

    10. Warranty. WDM guarantees its GS Pumps for a period of 12 months from the date of delivery, against defects in material and workmanship, according the indicated in its general conditions of sale. Failure to follow the suggestions and recommendations in this manual, as well as improper product use or handling, will completely invalidate the warranty.
  • Page 30 Operation Manual.
  • Page 31 GS Pumps.
  • Page 32 4034 Mint Way Dallas, Texas 75237. Tel. 800-783-6756 / 214-337-8780 support@wdmpumps.com...

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Gu series

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