Wilo PBI-L203MA, Installation, Operation And Maintenance Manual

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The pump does not
deliver water even
when the water tap is
opened.
The pump does not
stop when the tap is
turned off.
•
Main valve is closed.
•
Air is in the pump or piping.
•
Pump or motor malfunction
•
The motor reverses.
•
Water tank is too low.
•
Pressure sensor malfunction.
•
No power supply.
•
The pump is in “STOP” mode.
•
Main power, motor, sensors, or
connections are faulty or disconnected.
•
Missing phase
•
Operating pressure is too low.
•
Open the main valve.
•
Extract air out from the pump or piping.
•
Check and repair the pump.
•
In case of three wire connections,
exchange the connection of two wires
each other.
•
Fill the tank.
•
Move to Pressure regulation mode.
•
Check and repair the pump.
•
Remove the cause of missing phase.
•
Adjust the operating pressure.
•
Input switching off pressure is too high.
•
Pressure sensors or switches
malfunction.
•
Control board malfunction.
•
The piping leaks.
•
Worn pump or pump backlash
•
Adjust the input switching-off pressure.
•
Check and repair the pump.
•
Check and repair the pump.
•
Check and repair the pump.
•
Check and repair the pump.
•
The piping leaks.
•
The check valve leaks.
•
Check and repair the pump.
•
Check and repair the pump.
•
The range between the working
pressure and the switching off
pressure is too narrow.
•
Pressure tank malfunction or low pressure
•
DFR(Dynamic Flow Range) by piping
•
Adjust the working pressure and
switching off pressure.
•
Check and repair the pump. Fill air into
pressure tank up to rated value.
•
Repair the piping (remove the airpocket).
•
Input pressure is too low
•
Capacity lack of the pump
•
Worn pump
•
Adjust the working pressrue.
•
Check the specifications of the pump.
•
Check and repair the pump.
•
The pump is in Constant speed mode.
•
Control board malfunction.
•
Pressure sensors or switches malfunction.
•
Pump or motor malfunction.
•
Move to Pressure regulation mode.
•
Check and repair the pump.
•
Check and repair the pump.
•
Check and repair the pump.
•
Electrical wiring short
•
Circuit short or breaker short
•
Power short
•
Check and repair the pump.
•
Check and repair the pump.
•
Check and repair the pump.
The pump runs even
when water is not
flowing
The pump vibrates
irregolarly (The pump
stops and starts too
often.)
The pump runs but
does not deliver
expected flow.
The pump does not run in
Pressure regulation
mode.
Th ecircuit breakers trip.
Trouble Cause
Trouble shooting
운반·설치상의 주의사항
SWITCHING-OF TROUBLE SHOOTING (PUMP)
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