10 Maintenance and repair
Caution
Risk of injury from incorrect work. Maintenance work must be carried out by
trained personnel.
10.1 Safety
Before performing any work on the unit:
■
Turn the isolation switch on the unit to the 'Off' position and secure it against
being switched back on.
Caution
Danger of electric shocks. The unit controller and the service socket are
still live.
■
After switching off:
–
Always wait at least 3 minutes.
Caution
The use of condensers can pose a danger of fatal injury from directly
touching live parts even after the unit is switched off. Only open the unit
after waiting 3 minutes.
■
Observe the accident prevention regulations.
■
Observe the particular dangers involved when working on electrical systems.
■
When working in the unit, take precautions against unprotected, sharp metal
edges.
■
Immediately replace damaged or removed informational and warning signs.
■
Following maintenance work, professionally reassemble all dismantled
protective devices.
■
Replacement parts must comply with the technical requirements of the unit
manufacturer. Hoval recommends the use of original spare parts.
1
■
1
TopVent
®
isolation switch
Fig. 30:
Position of the isolation switch
36
TopVent
®
TH | TC | THC | MH | MC | MHC
Operating instructions
Maintenance and repair
4 218 828-en-01
4 218 828-en-01
Summary of Contents for TopVent MC-6-C
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