18
| Maintenance of the unit
GB
Fig. 8 Access broken rotor drive belt
The rotor drive belt (1) can be acquired from your installer or wholesaler.
The replacement drive belt is adjustable and delivered with a nipple attached in one end.
1. Stop the unit by disconnecting the mains.
2. Remove the front hatch. See chapter 6.2.
3. Pull out the heat exchanger half way through to access the cabling. Some force may be needed. Use handles.
4. Disconnect the heat exchanger power supply and the rotor sensor. Both cables are found beside the heat exchanger.
5. Pull out the heat exchanger. Some force may be needed.
Caution
Risk of personal injury! The heat exchanger weighs about 25 kg. There is a risk that the heat exchanger
falls out of the unit.
6. Remove the cover of the heat exchanger on the side of rotor motor (2) by removing 12 screws.
7. Remove the broken drive belt.
8. Use tape to attach the drive belt to the rotating heat exchanger, and rotate the exchanger by hand to get hold of the
drive belt.
9. Remove the tape and put the ”empty” end on to the nipple.
10.Press the ends firmly towards each other to secure the nipple.
11.Pull the drive belt on to the belt pulley and rotate the exchanger by hand. Check that the belt pulley rotates.
Note:
If the drive belt slips, the drive belt may be too long and needs to be shortened. Cut the drive belt 5 mm
and go to step 8.
12.Close and lock the front hatch and connect the unit to mains.
13.Check that the alarm has ceased on the Control Display.
Note:
If the alarm remains, contact the installer.
6.8 Overheat protection reset button
If the supply air temperature is low, it can indicate that the over heat protection is triggered. The overheat protection
can be reset by pressing the reset button (1).
211481 | A003
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