20 - EN
EN - 21
4.2 Maintenance of the casing
Check the unit casing at least once every 2 years.
1
2
3
Remove the front cover as instructed in the
section on the procedure for opening the unit:
■
Set the unit to the service mode;
■
Disconnect the power to the unit;
■
Remove the 3 screws from the front cover;
■
Remove the front cover;
Perform the following checks:
■
Check the seals for damage;
■
Check the inside and outside for dirt and
damage;
■
Check the air duct connections for dirt and
damage.
Treat any signs of corrosion and other damage
directly and correctly.
Do not treat the insulation cover and
the EPP parts (black hard parts with
structure) with soap. Soap will destroy
the airtightness and watertightness of
the material.
4.3 Maintenance of the heat exchanger
Inspect the heat exchanger at least once every two years.
1
2
3
Remove the front cover as instructed in the
section on the procedure for opening the unit:
■
Set the unit to the service mode;
■
Disconnect the power to the unit;
■
Remove the 3 screws from the front cover;
■
Remove the front cover.
Remove the heat exchanger:
■
Pull on the strap of the heat exchanger.
Do not cut the strap. The strap
is necessary to pull out the heat
exchanger from the unit.
You can only remove the heat exchanger without
damaging it when the unit is in the service mode.
During installation: Place the underside
of the heat exchanger in the guide
rails of the unit. Make sure that the red
locking plate of the heat exchanger
is visible on the front of the heat
exchanger.
Check and clean
the heat exchanger, if necessary
■
Use water to remove dust and dirt:
a. Submerge the heat exchanger a couple of
times in hot water (max. 40°C).
b. Rinse the heat exchanger with clean hot tap
water (max. 40°C).
c. Hold the heat exchanger between both hands
(on the sealed side surfaces) and shake the
excess water from the heat exchanger.
Do not use aggressive cleaning agents
or solvents. These can affect the
airtightness of the heat exchanger.
10001047667-0619-zw-zw-A4 ComfoAir E 350 GEN2 Service Zehnder-SI_EN.indd 21
11-07-19 13:31
