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32 WILO SE 01/2016
11 Spare parts
Spare parts may be ordered via a local installer
and/or Wilo customer service. To avoid queries
and incorrect orders, all data from the rating plate
must be specified with every order.
Subject to change without prior notice.
Motor overheating
Motor protection trips
Inadequate voltage Check voltage
Pump not running smoothly:
Foreign object
Impellers blocked
Bearing damaged
Clean pump
Clean pump
Have the pump repaired by customer
service
Ambient temperature too high Improve the cooling and restart after
cooling down.
Geodesic head > 1000 m Pump is only approved for geodesic
head < 1000 m
Motor protection (DMversion) is set too
low
Adjust setting of motor protection
to rated motor current
One phase (DM version) is interrupted Check, replace cable if necessary
Motor protection switch defective Replace motor protection switch
Motor defective Have the motor replaced by Wilo
customer service
Pump switches on and off constantly
when water is drawn off
Gas supply pressure in diaphragm pres-
sure vessel too low
Check gas supply pressure in diaphragm
pressure vessel and correct it
Diaphragm of the diaphragm pressure
vessel defective
Have the diaphragm or diaphragm pres-
sure vessel replaced by Wilo customer
service
Faults Causes Remedy
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