Wacker Neuson PS2 1503 Operator's Manual

Contents

Wacker Neuson PS2 1503 Operator's Manual Manual pdf 21 page image

PS (3-Phase) Series Operationwc_tx000131gb.fm 194.5 OperationBefore OperationImproper voltage and frequency of the power supply will prevent thepump from attaining its full potential, and may also lead to currentleakage, electrical shock, or fire.4.5.1 Once again, check the nameplate of the pump to verify that its voltageand frequency are correct.4.5.2 Check the wiring, power supply voltage, the capacity of the groundleakage circuit breaker, and the insulation resistance of the motor.Insulation resistance reference value = 20MW min.Note:The insulation reference value of 20MWmin. is based on a newor repaired pump. For reference values for a pump that has alreadybeen installed, refer to Maintenance and Inspection in this manual.4.5.3 Adjust the setting of the overload protector (i.e. circuit breaker) to thepump’s rated current.Note:Verify the rated current on the pump’s nameplate.4.5.4 When using a generator, as much as possible avoid operating thepump in conjunction with other types of equipment.Trial OperationNEVER start the pump while it is suspended, as the pump may jerkand cause a serious accident involving injury.NEVER start the pump where people are present, as they may sufferelectrical shock from current leakage.Be sure to check the pump’s direction of rotation when the pump isexposed to atmosphere (a). Utilize a hoist to stabilize the pump on alevel surface while performing this check. Operating the pump inreverse while it is submerged in water will damage the pump, whichmay lead to current leakage, electrical shock, or fire.4.5.5 The impeller will rotate counterclockwise (b), as viewed from thebottom of the pump. Operate the pump for a short time (1 to 2 seconds)to check the rotational direction of the impeller.Before changing the connections for reverse rotation, make sure thatthe power supply (i.e. circuit breaker) is properly disconnected and thatthe impeller has stopped completely. Failure to observe this may leadto serious accidents, including electrical shock, short, or injury.• To reverse the rotation, the following countermeasure must be taken.COUNTERMEASURE: Interchange two of the three wires designatedU, V and W respectively (c), or follow control system manufacturer'sinstructions to utilize rotary field control and phase inverter function ofthe control system supplied with the pump.CAUTIONWARNINGCAUTIONWARNING