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Filter removal through the bottom
10 - Maintenance
10.1 - Air filter
Filters should be frequently cleaned to avoid clogging. They
should be inspected every 3 or 4 months under normal
operating conditions and be replaced if necessary.
Unit should never be run without filter.
The filters can be removed for cleaning or replacement,
through the bottom or the side of the unit (see drawings
below).
Note :
In case the filters are to be removed from the bottom,
take off the clips on the filters in order to be able to remove
them from the casing.
Caution
Before performing any maintenance operation,
disconnect the unit main power supply.
10.2 - Condensate drain pan
The condensate pan must be checked periodically to make
sure that drain piping is not obstructed.
If required, it must be cleaned and rinsed.
The fan motor assembly bottom panel allows for easy
access, if there is no heating coil located downstream the
cooling coil, to condensate drain pan for cleaning.
10.3 - Coils
Check that coil fins are not clogged or damaged.
To avoid mouldiness of coils caused by an accumulation of
fine dusts, it is recommended to clean them frequently. If
necessary, comb the coil fins with an appropriate tool.
Care must be taken not to damage the fins while cleaning
them.
The coils can be removed for cleaning as shown on the
drawing below.
10.4 - Fan motor assembly
There is no particular maintenance on fan motor assembly.
The units are equipped with permanently lubricated fan
motor bearings. It is not necessary to add oil. However,
during periodic maintenance, check that fan wheel rotates
freely without any friction.
If the fan motor overload protection is tripped, wait for safety
automatic reset and try to find out the cause of overload
protection tripping.
Follow the instructions below to remove the motor and fans
for replacement :
Step 1 : Access panels removal
Disconnect the unit power supply. According to the access
condition, remove either the service side panel and the
opposite panel or the service side panel and the fan motor
assembly access panel.
Step 2 : Motor removal
Take away the drive belt, then the fixing screws from the
motor platform. Push this platform upward to take it from
the fans support rails.
It is recommended to proceed to the following maintenance
works in order to ensure a good operation of the unit.
Filter removal through the side
Coils removal
Clips
