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Table of Contents
Related Manuals for WDM ME Series
Summary of Contents for WDM ME Series
- Page 1 Operation Manual Medium Pressure 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...
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Page 3: Safety Recommendations
ME 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: Installation
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 ME Pumps. • Always allow sufficient access for maintenance and inspection, plus space for the use of a crane strong enough to lift the unit. • Be sure to have an adequate power supply for the pump motor. The electrical characteristics should fall within the range specified on the engine data plate.
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Page 6: Suction (Inlet) Piping
Operation Manual. Steel base plate .25” .75” to 1.5” Grout Shims Suction (inlet) piping. Suction piping must be selected and installed in such a way to minimize pressure loss and allow for a sufficient liquid flow during the starting and operation of the pump. Many NPSH problems can be traced directly to improper sizing of suction piping systems. - Page 7 ME Pumps. • For best results all horizontal suction lines should follow an even gradient. In suction lift conditions the gradient should be a gradual slope upward. For positive suction head, the gradient should be a gradual downward slope. • In order to avoid air pockets that can throttle the system or cause erratic pumping, high points, such a pipe loops, should be avoided.
- Page 8 Operation Manual. Negative suction installation Diagram Shut-off Expansion Valve Joint Check Valve Concentric Reducer Elbow Piping Support Eccentric Reducer Foot Valve & Strainer...
- Page 9 ME Pumps. 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.
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Page 10: 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 11: Electrical Installation
Pumps with mechanical seals require no adjustment. If the mechanical seal is altered or replaced with a packing gland, adjustments may become necessary. All pumps on ME line of WDM Pumps are equipped with mechanical seals matched to the specific conditions for which the pump was sold. -
Page 12: Overload Protection
In case of overload, the cause should be reviewed and corrected. Priming. • As WDM ME pumps are not self-priming, they must be fully primed before starting. To prime the pump completely fill the suction line with liquid. •... -
Page 13: Pre-Start Checklist
ME Pumps. Pre-start checklist. WARNING. The pump should be operated within the conditions on the name plate in order to protect the safety of the operator. If operated outside such conditions, the pump could fail causing injury to operating personal. In order to properly operate and maintain the pump and its components, an instruction book should be consulted. -
Page 14: Starting The Pump
Operation Manual. Before checking motor rotation, make sure all components in the system are wired and properly connected. If so then check the motor rotation as follows:: If a 3 phase unit (only) – energize the motor briefly to make sure the rotation is going in the direction indicated by the arrow in the pump volute. - Page 15 ± 5%. Pump shutdown. The following shutdown procedures will apply in most normal shut- downs for the WDM pumps types ME. 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.
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Page 16: Maintenance
Operation Manual. Restart: Any time the pump is restarted, but especially when the pump has been drained, you should check to make sure the pump is refilled back to the level required. 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.. - Page 17 ME Pumps. 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.
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Page 18: 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 19 ME Pumps. Below is a chart with the specifications necessary for the identification of each of the pump parts listed above. ME Parts List...
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Page 20: Reassembly Of Pumps
Operation Manual. ITEM Description Slinger Mechanical Seal Impeller Washer Steel base brackets Shaft Sleeve Lock Washer Impeller Hex Bolt Bracket Lock Washer Bracket Hex Bolt Base Hex Bolt Washer Motor Motor Bracket Casing Gasket Impeller Casing (Volute) Reassembly of pumps. •... -
Page 21: Troubleshooting
ME Pumps. Trouble shooting. Symptom Possible cause(s) Possible solution(s) Pump does not start Motor not connected Revise that motor connections have been properly done. 1. Fill pump casing. Using a foot 1. Casing not filled with water. valve will extend pump life and facilitate immediate priming. - Page 22 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.
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Page 23: Warranty
ME Pumps. 10. Warranty. WDM guarantees its ME 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 24 4034 Mint Way Dallas, Texas 75237. Tel. 800-783-6756 / 214-337-8780 support@wdmpumps.com...