Cleaning The Cpa Controller; Other Miscellaneous Maintenance - BPC DUPLEX 250 Easy Use, Maintenance And Installation Manual

Removing the heat recovery exchanger
Disconnect the unit from power supply, disconnect the condensate drain in ceiling units, open the unit and unlock the heat re covery
exchanger on both sides.
Note down the position of the heat exchanger (the number depends on the equipment type) for seal fitting. The sticker with le tter A
must be by the edge of the fan enclosure.
.
Remove the cover and unscrew the locking screws from
the unit's lid – 4 in the corners
Unlock the butterfly nut on one side of the exchanger
Follow the procedure in reverse to slide the heat recovery exchanger back in. Before sliding exchangers in, we recommend
lubricating only the seal with silicon oil for easy sliding and increasing the flexibility and life span of the seal.

Cleaning the CPA controller

3.4.
The CPA controller requires the same maintenance as the lighting switch – cleaning is only possible using a dry cloth, no water may
enter the inside of the controller. Liquids which might damage its surface must not be used for its cleaning (e.g. organic
solvents).

Other miscellaneous maintenance

3.5.
Before any intervention with the unit it must be disconnected from power supply!
During filter cloth or cassette replacement and every time you are opening the unit check the following:
 The condensate drain in the unit's door or bottom for cleanliness.
 Any blockage of the condensate drain might cause serious trouble.
 The water level in the condensate drain, especially in summer and autumn. If the level is not high enough, air from the sewer
might be drawn in; flood the condensate drain.
If any parts of the equipment are covered in dust, clean them with a slightly damp cloth.

4 x
Open the unit's door carefully and gradually from one side.
Start from the wiring entry side, in ceiling units disconnect
the condensate drain.
Slide out the heat recovery exchanger block
12
Side A