Wilo PE-350EA, Owner'S Manual

Page: 13 / 16

TROUBLES AND COUNTER-MEASURES
13
Troubles Causes
Counter-Measures
(The indication
●
can be done by user.)
Motor does
not start.
Water is not
pumped out
although
motor runs.
Thermal protector
for motor works
too often.
Water does not
come out at the
first few minutes
after switch on.
Pump starts
though no water
is being used.
Too low power supply voltage.
Trouble in motor.
Cord disconnected.
Faulty cord connection.
Thermal protector.
Air drawn into pump from
mechanical seal. Replace the new mechanical seal.
Repair the defects.
Repair the capacitor.
Repair piping, pump parts and faucets etc.
Repair the mechanical seal.
Replace the impeller.
Replace the defects of piping
(To prevent air leaking)
Take off the check valve case.
Then, clean the valve the valve seat
and the valve hole.
● Consult with power supply company.
Air drawn into suction pipe. After checking the joints of piping, shut
them perfectly.
Trouble in check valve. Take off the check valve case. Then, clean the
valve, the valve seat and the valve hole.
Water level of well is lower
than standard level.
Too low or high power supply
voltage.
Impeller is contact with
another part.
Water leaks at piping or pump.
Water leaks at mechanical seal.
Trouble in check valve.
Defacement or transformation
of the impeller.
Short or open circuit of the
capacitor.
Air drawn into suction pipe.
● Check the water level of well.
●
If the motor is overheated, it doesn’t
operate.Then, wait till getting cold.
(20~30 minutes)
● Insert the plug securely.
Replace the new cord.
Repair or replace the motor.
●
Consult with the power supply company.