5.3.4 Checking the fans
Even if the required maintenance, such as change of filters is carried out, dust and grease may slowly
build up inside the fans. This will reduce the efficiency.
The fans are easily taken out from the unit (figure 7) by loosening 4 screws and disconnecting the fast
couplings to the electric wires. Depending on the accessories installed, remove the tubing next to the fast
couplings for the extract air fan or both the extract air fan and supply air fan.
Clean the fans with a cloth or a soft brush with a recommended interval of once per year. Do not use water.
White spirit can be used to remove obstinate settlements. Allow drying properly before remounting.
Fig. 7
5.3.5 Checking the Hot water heating battery
After long periods of operation (usually several years) dust may have deposited on the surface of the
battery. This may reduce batteries capacity. The battery can be cleaned with a pressure washer with
misting jets, or with compressed air. Cleaning should be carried out carefully so as not to damage the
batteries aluminium fins. Once a year the battery water circuit needs to be vented to maintain the
batteries capacity.
5.3.6 Checking the Electrical heating battery
After long period of time dust and pollutants can build up on the heating rods. This can cause unpleasant
odors and in the worst case fire. Clean with compressed air, vacuum or brush. The automatic safety
function needs to be tested and verified.
Topvex FC
Operation and Maintenance Instructions
125918
30
Systemair Sverige AB
