ENGLISH
The mechanical seal must not run dry!
–
Dry running reduces the life of motor and
mechanical seal.
–
As protection against dry running for the
mechanical seal, the motor is fitted with an oil-fil-
led separating chamber.
– When filling the shaft or lowering the pump into the pit make
sure that the float switches can move freely.
– Switch on pump.
7
Maintenance
In order to avoid infection maintenance work should
only be carried out using protective gloves.
ATTENTION!
For all maintenance and repair work the pump is to
be switched off-circuit and protected against unau-
thorised re-starting.In principle, damage to the con-
necting cable should only be repaired by a qualified
electrician.
– Change oil in the mechanical seal chamber one times the
year.
– Unscrew Oil drain plug with seal (Fig. 1, pos. 16).
– Cant the pump until the oil gets out (use a suitable collec-
ting basin and dispose the oil correctly).
– Fill in new oil (see connection and electrical data).
– Screw in Oil drain plug with seal.
8
8
Problems, Causes and Remedies
Problem
Cause
Remedies
Pump does not run
no voltage
Check wires and fuses and/or switch automatic
circuit-breakers back on in distribution substation
Rotor blocked
Clean casing and impeller
Cable break
Check cabvle resistance. If necessary, replace cable.
Only use original WILO special cable!
Safety switches have
Water in motor compartment
contact customer services
cut out
foreign body in the pump,
Turn off the pump and ensure that it is not turned
WSK triggered.
on by unauthorised personnel,
Lift the pump out of the well,
Remove foreign body.
Pump has no power
The pump sucks in air due to
check the function/adjustments
an overly strong drop-
of the control level.
in the liquid level.
Pressure-pipe blocked
Check and clean line
If no solution can be found, please contact your plumbing and heating specialist or your nearest WILO customer services or
representative.
Subject to technical alterations!
