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Service and maintenance
Important information
Service
Maintenance schedule
WARNING
Always disconnect the power supply on the safety switch and wait for the fans to stop before you start
maintenance and cleaning.
ATTENTION
By opening the front doors, you can easily access the inside of the unit for maintenance and cleaning.
WARNING
Always disconnect the power supply on the safety switch and wait for the fans to stop before you start mainte-
nance and cleaning.
Also remember the safety switch for the electrical after-heating element.
In order to ensure optimal operation of the ventilation unit, achieve long service life, ensure a high degree of hygiene and thereby
a good indoor climate, it is important to maintain and clean the ventilation unit as recommended by Nilan A/S.
The schedule below is a guideline for maintenance intervals for the unit under normal operating conditions. Maintenance should
be adapted to current operating conditions.
Component Action
Once a
year
In case of
alarm
Filters See the section on fi lter change X
Filter frame holders Check that gaskets in the fi lter frame holders form a tight seal X
Gaskets and sealing strips
Check that they form a tight seal.
Note: Sealing strips between the modules should only be checked if the
modules have been separated due to maintenance.
X
Fans Check function. X
Heating element Check function. X
Heat exchanger Check function. X
Condensers and evaporators Check function. X
Compressor Check function. X
Duct connections Check seal. X
Condensate and cleaning
drains
Check the condensate and cleaning drains for clogs. X
Check safety functions Check fi re thermostat and temperature sensors. X
Damper Check function. X
Motor valve and
circulation pump
Check function. X
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