INSTALLATION AND SERVICE MANUAL FOR PROFESSIONALS
Maintenance and troubleshooting: General maintenance instructions
Maintenance and troubleshooting
General maintenance instructions
To ensure that the unit always meets the technical requirements, preventive maintenance
activities have to be carried out at specified intervals. This can prevent breakdowns and ineffi-
cient operation and maximise the service life of the unit, i.e. to 10 years or more.
It is particularly important to note that maintenance intervals for filters can vary depending
on the specific environment. Moving parts are subject to wear and tear and need to be repla-
ced when they are worn out, depending on their specific environment.
The factory warranty is only valid if preventive maintenance activities have been carried out
and documented. This documentation can be in form of a written maintenance protocol.
Risk of electric shock!
You can be severely injured by an electric shock.
•
Scope of mainte-
The following parts require preventive maintenance:
nance
DANGER
Always disconnect the unit from the mains by removing the mains plug from the socket
before opening the unit!
Maintenance interval
Task
Every 6 months
Check the filters. Replace filter(s) if
required.
Annually
Changing the filter
Every 2 years
Inspecting and cleaning the fans
Inspecting and cleaning the heat ex-
changer
Inspecting and cleaning the bypass
Cleaning the internal air duct
Checking and cleaning drip tray, drain
and drain hose
To be carried out by:
User
User
Trained specialist per-
sonnel
Trained specialist per-
sonnel
Trained specialist per-
sonnel
Trained specialist per-
sonnel
Trained specialist per-
sonnel
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