5.3 Maintenance Instructions
5.3.1 Changing Supply/Extract air filter
Indicated as “filter to be changed” in the control panel.
The bag filter cannot be cleaned and must be changed when necessary. New filters can be ordered from
Systemair. Operation time between filter changes must be reset after filter change (see table 3
Filter
alarm
). To change the alarm activating time see section 4.3,
Filter alarm
.
The filters are taken out after loosening a screw attached to the filter guide rail (figure 7)
Fig. 7 Changing filters
5.3.2 Checking the heat exchanger
After a long time of use dust may build up in the exchanger (pos.5, figure 3 ) and block the airflow. It is
important to clean the exchanger regularly to maintain high efficiency. The heat exchanger in the Topvex
FR can be taken out of the unit. See table 2 for a weight overview. Wash in hot soapy water or use
pressure air. Do not use detergent containing ammonia.
Table 2: Weight of heat exchanger block
Model
Weight of heat exchanger block (kg)
30
40
52
66
Note:
Make sure that the rotor motor is not exposed to moisture.
Topvex FR03, FR06, FR08, and FR11
Operation and Maintenance Instructions
206575
16
Systemair AB
