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Service and maintenance
Important information
Service
Maintenance schedule
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.
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.
Component
Action
Once a year
In case of alarm
Filters
See the section on filter change
X
Filter frame holders
• Check that gaskets in the filter frame holders form a tight seal
X
Gaskets and sealing strips
• Check that they form a tight seal
X
Fans
• Check function
• Clean the fan wheels
X
Heating element (if installed)
• Check function
• Clean the slats in the heating element
• Check the motor valve and the circulation pump
X
Heat exchanger
• Check function
• Clean the slats in the heat exchanger
X
Heat pump
• Check function
• Check filling volume
• Clean the slats in the condenser and the evaporator
X
Duct connections
• Check seal
X
Condensate drain
• Check that water trap is functioning
X
Safety functions
• Check temperature sensors
• Check fire thermostat if installed
X
Dampers
• Check the open/close function
X
Ventilation unit
• Clean internally with damp cloth
• Clean externally
X
ATTENTION
Maintenance should be carried out by a professional service company specialising in ventilation systems.
ATTENTION
When cleaning the ventilation unit, care should be taken not to damage ANY parts including, for instance, insulation
strips, copper parts, ducts and slats. Electrical installations should likewise be protected from water and cleaning prod-
ucts.