WDM AG Series Operation Manual
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WDM AG Series Operation Manual

Self-priming pumps
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Self-Priming Pumps
Operation Manual

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Summary of Contents for WDM AG Series

  • Page 1 Self-Priming Pumps Operation Manual...
  • Page 2 Self-Priming pump. Read these recommendations carefully before use. Keep this manual for future reference. Congratulations! You have purchased a product developed with the latest technology from WDM Pumps, Inc. (referred to as “WDM”). WDM designs and manufactures our products with the highest quality components.

  • Page 3: Self-Priming Pumps

    Self-Priming Pumps. WARNING. 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 pump will void your warranty.
  • Page 4 Heat buildup inside end-suction and self-priming pumps may generate steam, resulting in dangerous pressures. WDM recommends that a high temperature switch or pressure relief valve be installed on the pump body.

  • Page 5: General Information

    Self-Priming Pumps. 3. General Information. Receiving. Pumps should be inspected upon receipt. Make note of damage or missing parts, if any, and immediately file a claim with the shipping company. During inspection, if the manual is removed, do not lose or misplace it.

  • Page 6: Installation

    Operation Manual. 4. Installation. Location. The pump should a l w a y s be as close as possible to the liquid s u p p l y and in no case should the pump be more than 25 feet above the surface of the liquid supply.

  • Page 7: Pump Foundation

    Self-Priming Pumps. Pump Foundation. Steel base plate .25” .75” to 1.5” Shims Rotation. Check the direction of the rotation of the pump to be sure that it agrees with direction indicated on the rotation plate. If the direction of the rotation is incorrect, consult the following instructions. F o r a 3 phase, exchange any two incoming wire leads.
  • Page 8 Operation Manual. The suction line must not have holes. The slightest air leak in the suction line can prevent the pump from priming. To insure an air tight joint, use pipe thread compound in all threaded connections in the suction line. . Suction flanges should also be pulled up tight to prevent air leaks.
  • Page 9 Self-Priming Pumps. Positive Suction Shut-off Valve Check Valve Priming plug Shut-off Valve Union Frame Mounted Units Foot Valve & Strainer. Elbow. Incline suction line, 2% grade min. Eccentric Reducer Check Valve Shut-off Valve Flexible Coupling Discharge line.

  • Page 10: Discharge System

    Discharge System. Connect the discharge hose or pipe to the side outlet on the discharge tee, or to the discharge elbow. ATTENTION. WDM does not supply all the accessories (valves, gauges, pipes, extensions, etc.) mentioned in this operation manual.

  • Page 11: Pump Lubrication

    Self-Priming Pumps. Electric motor & connections. Read the motor manufacturer’s instructions, or consult the connection diagram located either on the motor name plate or inside the cover on the conduit box. The wiring of the motor and control panel, overload protection and grounding should be in accordance with State, Province, Local and National Electrical Code (NEC) or Canadian Electrical Code (CEC).

  • Page 12: Pump Service And Repair

    Operation Manual. top of pump body, and fill the pump body completely with liquid. Liquid should be as free of solids as possible. In freezing weather, the pump should be primed with warm water whenever possible, to prevent damage that might be caused by ice forming inside the pump.
  • Page 13 Self-Priming Pumps. ATTENTION. Do not pry the flange off, but rather bump it off with a block of wood and a hammer. Pull off the gasket together with the weights, round head screw and lockwasher. All parts should be examined and parts showing wear or damage should be replaced.

  • Page 14: Motor Service

    Operation Manual. intermediate coupling. CAUTION. All seal parts should be handled with extreme care. Do not scratch or mar lapped faces. Lightly oil the ring and press the replacement stationary member over motor shaft and into intermediate coupling. The motor shaft and inner surface of bellows of rotating member should be lightly oiled.
  • Page 15 Self-Priming Pumps. 7. Sectional. AE Series.
  • Page 16 Operation Manual. Item Description Shaft Sleeve Impeller Volute Motor Bracket Washer Casing Suction Discharge Gasket / O ring Mechanical Seal Volute Pin Slinger Check Valve Gasket Volute Gasket Discharge Base brackets Big Weight Small Weight Motor Square Head Plug Heavy Helical Spring Lock Washers (Inch Series) Hex Cap Screw Hex Bolt - UNC (Regular Thread - Inch) Hex Cap Screw...
  • Page 17 Self-Priming Pumps. AG/AD Series.
  • Page 18 Operation Manual. Item Description 1 Engine 2 Impeller 3 Shaft Seal 4 Casing 5 Engine Bracket 6 Volute 7 Suction 8 Suction Gasket 9 Volute Gasket 10 Discharge 11 Shaft Sleeve 12 Base Brackets 13 Big Weight 14 Small Weight 15 Hex Nut 16 Round Screw 17 Lock Washer...
  • Page 19 Self-Priming Pumps. AAG/AAD...
  • Page 20 Operation Manual. Item Description 1 Casing 2 Engine Bracket 3 O-ring 4 Gasket 5 Suction 6 Discharge Gasket 7 Discharge 8 Volute 9 Volute Gasket 10 Mechanical Seal 11 Impeller 12 Lock Washer 13 Plastic Coupling 14 O-ring 15 Plastic Plug 16 Gasket 17 Engine 18 Hex Socket Head Cap Screw...
  • Page 21 Self-Priming Pumps. AU Series. Item Description Discharge Suction...
  • Page 22 Operation Manual. Suction Gasket Gasket Casing Impeller Big Weight Small Weight Hex Bolt Lock Washer Volute Discharge Studs Suction Studs Lock Washer Impeller Lock Washer Volute Gasket Drain Plug Hex Nut Discharge Lock Washer Impeller Lock Washer Hex Bolt Bearing Frame Shaft 24/25 Bearing...

  • Page 23: Troubleshooting

    Self-Priming Pumps. 8. Troubleshooting. Symptom Possible cause(s) Possible solution(s) 1. Fill pump casing. Using a foot valve will extend pump life and 1. Casing not filled with water. facilitate immediate priming. 2. Total head too high. 2. Shorten suction head. 3.
  • Page 24 Operation Manual. 4. Increase inlet pressure by 4. Insufficient inlet pressure or adding more water to tank or in- suction head. creasing back pressure by turning gate valve on discharge line to partially closed position. 5. Clogged foot-valve, strainer, 5. Unclog, clear or replace as or pump.

  • Page 25: Warranty

    Self-Priming Pumps. 9. Warranty. WDM guarantees it’s Self-Priming Pumps for a period of 12 months from the date of delivery, against defects in material and workmanship, as 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 26 Operation Manual. Notes:...
  • Page 27 Self-Priming Pumps. Notes:...
  • Page 28 4034 Mint Way Dallas, Texas 75237 800-783-6756 / 214-337-8780 support@wdmpumps.com [Type text]...

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