7 Servicing
KPI-(252-2002)(E/X)4E - Energy recovery and active energy recovery ventilation units
SMGB0137 rev.0 - 05/2021
271
7
7.9.4 Removal of heat exchanger
1 Pull the hinges back. Open and remove the service cover (b).
! CAUTION
The service cover (b) is not xed, pay attention when pull the hinges back because the cover can fall.
2 Hold onto the handle.
3 Remove the two total heat exchanger elements from the main unit.
7.9.5 Removal of the air lter
1 Pull the hinges back. 
2 Open and remove the service cover (b).
! CAUTION
The service cover (b) is not xed, pay attention when pull the hinges back because the cover can fall.
It is recommended to remove the two heat exchanger
3 Hold onto the handle.
4 Remove the two total heat exchanger elements from the main unit.