Servicing; 4�1 Service Reminder; 4�2 To Open The Ventilation Unit; 4�3 Filter Change - Swegon CASA r85 Installation, Operation And Maintenance Manual

4. Servicing

4.1 Service reminder
The service reminder function with preset intervals can be acti-
vated and shows the "Service reminder" text on the Premium
control panel display screen� The factory setting indicates that
the Service reminder is not in use� It can be put into operation
from the Installation and service menu, Service reminder point�
The normal setting is that the service reminder is displayed at
six month intervals; however the time setting is adjustable�
Reset the service reminder to zero from the Installation and
service menu, Alarm point, when service has been carried out�
4.2 To open the ventilation unit
Isolate the power supply voltage to the ventilation unit (pull
out the mains plug from the wall socket)� Wait a few minutes
before you open the inspection covers on the ventilation unit,
so that the fans will have time to stop and the air heaters can
cool down�
4.3 Filter change
• To open the front inspection cover�
• Wait a few minutes, so that the fans have time to stop and
the air heaters, if fitted, have time to cool down�
• Change the filters�
• Close the inspection cover�
The filter should be cleaned every six months and
should be replaced at least once per year.
The filter should be replaced at least once per year.
4.3 Other servicing
To be carried out at least once per year.
• Withdraw the heat exchanger for inspection� If you with-
draw the entire heat exchanger, you must also disconnect
the quick-fit connector� Then remove the front panel�
Check that the drive belt is not worn� Replace it if it is worn�
Check that the heat exchanger passages are not clogged�
Clean with a soft brush, vacuum cleaner or under running
water, if needed� If you find it necessary to use detergent,
choose one that does not corrode aluminium� Protect the
heat exchanger drive motor to prevent contact with liquid�
N.B.! The passages of the heat exchanger should be
dry before you refit it.
• Withdraw the fans for inspection� Unfasten the protective
plates� Withdraw the fan downward from the front edge
and then outward� If you remove the entire fan, you must
also disconnect the quick-fit connector�
Clean with a soft brush, vacuum cleaner, compressed air
or wipe with a moist cloth, if needed� If you find it neces-
sary to use detergent, choose one that does not corrode
aluminium� Be careful not to dislocate the impeller balanc-
ing weights� Protect the fan motor to prevent contact with
liquid�
• Clean the inner surfaces of the ventilation unit, if needed�
• Check that the condensate discharge outlet is not clogged
and check its outflow by pouring water on the bottom of
the ventilation unit�
Swegon reserves the right to alter specifications.
The ventilation unit must not be
operated without filters. Use only filters
recommended by Swegon in the ventila-
tion unit.
Find the correct filters in Section 6. List of
components.
The locations of the filters in a ventilation unit in the
right-hand version. The locations of the filters are
mirror-inverted in a left-hand model.
Supply air filter Extract air filter
The condensate discharge opening is located on the bottom
of the ventilation unit, near the rear edge.
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