15
MAINTENANCE
Maintenance operations of the unit are required 3-4 times per year. Maintenance includes general cleaning of the unit and the following op-
erations:
1. Filter maintenance (3-4 times per year).
Dirty filters increase air resistance in the system and reduce supply air volume. The filters require cleaning not less than 3-4 times per year.
Vacuum cleaning is allowed. After two consecutive cleanings filters must be replaced. For new filters contact your Seller.
Sequence of filter removal:
1. Remove the 5 screws and take the service panel off. Remove the panel with care.
2. Pull the filters until they slide off the guides.
Install the filters in the reverse order.
2.
Heat exchanger inspection (once per year).
Some dust may accumulate on the heat exchanger block even in case of regular maintenance of the filters. To maintain the high heat recovery
efficiency, regular cleaning is required. To clean the heat exchanger pull it out, flush the heat exchanger with warm detergent solution. After clean-
ing install the dry heat exchanger back to the unit.
Sequence of heat exchangers removal:
1. Remove the 5 screws and take the service panel off. Remove the panel with care.
2. Pull the first heat exchanger and remove it from the unit.
3. Disconnect the contact socket on the bypass wall and remove the bypass.
4. Pull the second heat exchanger and remove it from the unit.
Install the heat exchangers in the reverse order.
