5.3.7 Cleaning the extract louvers and inlet diffusers
The system supplies treated outdoor air to the building and extracts the used indoor air via the duct system
and diffusers/louvers. Diffusers and louvers are mounted in ceilings/walls in bedroom, living room, wet
rooms, WC etc. Remove diffusers and louvers and wash in hot soapy water if required. Diffusers/ louvers
must be put back with their original settings and positions in order not to unbalance the system.
The cleaning of these parts is done when necessary.
5.3.8 Checking the outdoor air intake
Leaves and pollution could plug up the air intake grille and reduce the unit’s capacity. Check the air intake
grille at least twice a year and clean if necessary.
5.3.9 Checking the duct system
Dust and grease settlements may build up in the duct system even if filters are changed regularly. This
will reduce the efficiency of the installation. The ducts should therefore be cleaned/changed when
necessary. Steel ducts can be cleaned by pulling a brush, soaked in hot soapy water through the duct via
diffuser/louvre openings or special inspection hatches in the duct system (if fitted).
5.3.10 Changing the Internal Battery
Note:
This procedure requires knowledge of proper ESD protection; i.e. an earthed wristband must be used!
When the alarm ”Internal Battery” is activated and the battery LED lights up red, the battery for backup of
program memory and real-time clock has become too weak. The battery is replaced as described below.
A backup capacitor saves the memory and keeps the clock running for at least 10 minutes after the power
supply is removed. Therefore, if the battery replacement takes less than 10 minutes, there will be no need
to reload the program, and the clock will continue to run normally.
The replacement battery must be of the type CR2032.
1
Remove the cover by pressing down the locking
torques at the edge of the cover using a small
screwdriver, and at the same time pulling the
edges outwards.
2
Grip the battery firmly with your fingers and lift it
upwards until it rises from its holder.
Press the new battery firmly down into place. Note
that to preserve correct polarity, the battery can
only be inserted the “right way round”.
Topvex FC
Operation and Maintenance Instructions
125918
31
Systemair Sverige AB
