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7 Maintenance
In order to avoid infection maintenance work should only be carried out using
protective gloves.
For all maintenance and repair work the pump is to be switched off-circuit and
protected against unauthorised re-starting.
In principle, damage to the connecting cable should only be repaired by a qualified
electrician.
8 Problems, causes and solutions
Problem
Pump does not run
Pump has no
power
No suction
If no solution can be found, please contact your plumbing and heating specialist or
your nearest WILO customer services or representative.
Causes
no voltage
Rotor blocked
Cable break
The pump sucks in air due
to an overly strong check
the function/adjustments
of the
drop in the liquid level
Pump
working
insulating air cushion
Pressure-pipe blocked
Hose (suction side leaky)
- 14 -
Solutions
Check wires an
automatic
circuit-breakers back on in
distribution substation
Clean casing and impeller
Check cable resistance. If necessary,
replace
cable. Only use original WILO special
cable!
Check the liquid level
against
Fill the pump housing with water.
Check and clean line
Repair or change suction hose.
Subject to technical alterations!
ENGLISH
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