EBARA 4WN Series - User Manual

Questions and Answers

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vicki21Aug 4, 2025
Why is my EBARA 4WN Water Pump running but not pumping any water?
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  Cameron MartinAug 5, 2025
  Several issues could be the cause: * The water level in the borehole might be too low. Try reducing the pumping volume, lowering the pump further, or using a pump with a smaller output. * The non-return valve could be closed or blocked. In that case, pull the pump out of the borehole and clean or replace the non-return valve. * The non-return valve on the pressure side is closed. You should open the non-return valve. * The intake screen might be blocked. Pull the pump out of the borehole and clean or replace the intake screen. * Motor malfunction. * The pump is faulty. In this case, repair or replace the pump.
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guerrerojasonAug 19, 2025
How to troubleshoot reduced performance in my EBARA Water Pump?
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  Michael HughesAug 19, 2025
  If your pump is running but with reduced performance, consider the following: * The pressure pipe might be partially blocked by dirt, leaking, or damaged. Clean the pressure pipe, mend the leak, or replace it. * The pump may be immersed too deep into the borehole and is covered by sand or solids. Reduce the immersion depth. * The non-return valve might be only partially open. Pull the pump out of the borehole and clean or replace the non-return valve. * The intake screen might be dirty. Pull the pump out of the borehole and clean or replace the intake screen. * Pump getting too hot. Fit the pump with a cooling jacket. * Motor malfunction. Measure motor current.
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Edward GrahamAug 27, 2025
What to do if my EBARA Water Pump won’t start?
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  Dustin JohnsonAug 27, 2025
  If your EBARA water pump won’t start, here are a few things to check: * The motor protection switch may have been triggered. Remove the plug from the socket for at least one minute. * There might be no power supply. Have the electrical installation checked by a qualified electrician. * There could be a faulty pump or underwater cable. Repair or replace the pump or underwater cable.
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jonathansavageNov 10, 2025
What to do if my EBARA 4WN Water Pump switching on and off frequently?
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  mary44Nov 10, 2025
  If your pump is switching on and off frequently, especially with an installed pressure compensation tank or pressure switch, consider these potential causes: * The inlet pressure in the compensation tank might be too low. The inlet pressure of the compensation tank should be about 10% lower than the pump’s switch-on pressure. * The compensation tank could be too small. Increase the volume of the compensation tank by installing a further tank or replace it. * The compensation tank membrane might be damaged. Replace the compensation tank. * The difference between switch-on and switch-off pressure set on the pressure switch is too low. Increase the pressure difference on the pressure switch. The switch-on pressure should be about 10 % higher than the pressure of the compensation tank...