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8. Maintenance and service
The motors are maintenance-free.
All motors are easy to service.
Service kits and service tools are available from
Grundfos.
The motors can also be serviced at a Grundfos
service centre.
If you want Grundfos to service the motor, you must
contact Grundfos with details about the possible
contamination, etc. before you dispatch the motor.
Otherwise, Grundfos may refuse to accept the motor
for service.
Any costs of returning the motor must be paid by the
customer.
9. Fault finding
Warning
If a motor has been used in a liquid which
is injurious to health or toxic, the motor will
be classified as contaminated. Clean the
motor properly before starting service.
Be aware that the motor liquid may also be
contaminated.
Fault Cause Remedy
1. The motor does
not run.
a) The fuses are blown. Replace the blown fuses. If the new ones
blow too, check the electrical installation
and the submersible drop cable.
b) The ELCB or the voltage-
operated ELCB has tripped.
Cut in the circuit breaker.
c) No power supply. Contact the power supply company.
d) The motor-protective circuit
breaker has tripped.
Reset the motor-protective circuit breaker
(automatically or possibly manually). If it
trips again, check the voltage. If the voltage
is OK, see items e) - h).
e) Motor-protective circuit breaker/
contactor is defective.
Replace the motor-protective circuit
breaker/contactor.
f) Starter device is defective. Repair/replace the starter device.
g) The control circuit has been
interrupted or is defective.
Check the electrical installation.
h) The pump/submersible drop
cable is defective.
Repair/replace the pump/cable.
www.motralec.com / service-commercial@motralec.com / 01.39.97.65.10
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