Spare Parts - Wilo FLA-Serie Einbau- Und Betriebsanleitung

Fault
Motor protection switch triggers
(malfunction only occurs in test
operation)
Pump generates no or insufficient
power
Pump generates no or insufficient
power
Dry-running protection switches off
despite presence of water
(malfunction only occurs in test
operation)
You can find information on pump or control
device faults not dealt with here in the supplied
documentation for the components concerned.
If the operating fault cannot be remedied,
please consult a specialist company or your
nearest Wilo customer service or representa-
tive.

11 Spare parts

Spare parts or repairs may be ordered from local
specialist retailers or Wilo customer service.
To avoid queries and incorrect orders, all data of
the rating plate should be submitted for each
order.
Subject to change without prior notice
Installation and operating instructions Wilo-FLA
Cause
Non-return valve defective
Flow rate too high
Contactor defective
Turn-to-turn fault in the motor
Mains voltage: a phase is missing
Intake pipe blocked or shut off
Nominal diameter of the inlet pipe too
small
Inlet pipe installed incorrectly
Air in the inlet
Impellers blocked
Non-return valve leaking
Non-return valve blocked
Gate valve in the system closed or not
sufficiently open
Incorrect direction of rotation of the
motors
Turn-to-turn fault in the motor
Nominal diameter of the inlet pipe too
small
Inlet pipe installed incorrectly
Electrodes or low-water signal trans-
mitter connected incorrectly or
adjusted incorrectly
Low-water signal transmitter defective
Remedies
Check and replace the non-return valve
if necessary.
Check the pump data and default values
and correct them if necessary.
Check it and replace it if necessary.
Check, if necessary replace motor or
have repaired.
Check the fuses, cables and connec-
tions.
Check the inlet pipe and remove the
blockage or open the check valve if
necessary.
Check the inlet pipe and increase the
cross-section of the inlet pipe if neces-
sary.
Check the inlet pipe and change the
pipe routing if necessary.
Check and shut off the piping and vent
the pumps if necessary.
Check the pump and replace it or have it
repaired if necessary.
Check and replace the seal or non-
return valve if necessary.
Check and remove the blockage or
replace the non-return valve if neces-
sary.
Check and open the check valve com-
pletely if necessary.
Check direction of rotation and correct
by changing over phases if necessary
Check, if necessary replace motor or
have repaired.
Check the inlet pipe and increase the
cross-section of the inlet pipe if neces-
sary.
Check the inlet pipe and change the
pipe routing if necessary.
Check the installation or setting and
correct it.
Check and, if necessary, replace the
low-water signal transmitter.
English
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