en Maintenance and repair
92 WILO SE 2018-12
4. Seal threaded cable connections watertight.
5. Support the switchgear (e.g. get a second person to help).
6. Loosen the switchgear fastening screws and remove the switchgear from the
structure.
▶ Switchgear removed. Observe the following for storage!
10 Maintenance and repair
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work can lead to death due to electric
shock! Electrical work must be carried out by a qualified electrician in accordance
with the locally applicable regulations.
NOTICE
Unauthorised work or structural changes are prohibited!
Only maintenance and repair work described in this manual may be carried out. All
other works and any alterations to the construction may only be carried out by the
manufacturer.
10.1 Maintenance intervals
Regular
▪Clean switchgear.
Annually
▪Check electro-mechanical components for wear.
After 10 years
▪General overhaul
10.2 Maintenance tasks
Cleaning switchgear
‡ Switch off switchgear.
1. Clean switchgear with a damp cotton cloth.
Do not use any aggressive or scouring cleaners or fluids!
Check electro-mechanical components for wear
Get electro-mechanical components (e.g. contactor combinations) checked for wear by
an electrician. If wear is ascertained, have the affected components replaced by an
electrician or Wilo Customer Service.
General overhaul
During a general overhaul, all of the components, wiring and the housing are checked
for wear. Defective or worn components are replaced.
10.3 Maintenance interval display
Fig.72: Maintenance interval display
The switchgear has an integrated maintenance interval indicator. Once the set interval
has expired, “SER” on the main screen blinks. The next interval starts automatically by
resetting the current interval. The function is disabled at the factory.
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