7 Maintenance and repair
Caution
Risk of injury from incorrect work. Maintenance work must be carried out by
trained personnel.
7.1 Safety
Before performing any work on the unit:
■
Turn the on-site main switch to the ‘Off’ position and secure it against being
switched back on.
■
Wait at least 5 minutes after switching the unit off.
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 5 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 protec-
tive devices.
7.2 Maintenance
Maintenance schedule
Activity
Interval
Cleaning the heat exchanger
If required,
at least once per year before the heating season
Check function
1 x annually
Cleaning the heat exchanger
■
Carefully clean the heat exchanger with compressed air.
– Dismantle the air inlet grille for cleaning.
–
Ensure that you do not damage the fins.
7.3 Repair
If repairs are necessary, contact the manufacturer’s customer service department.
17
TopVent
®
TW
Design, installation and operation
Maintenance and repair
4 216 285-en-02
