Installation and operating instructions
Compact ceiling-mounted units KWL EC 220/340 D
10
GB
CHAPTER 3
SERVICE AND MAINTENANCE
3.0
Service and maintenance
All work must be carried out with the equipment fully isolated from the power supply!
– Allow the unit to cool down or wait for five minutes until the fans have turned off.
– Risk of electric shock, moving parts (fans) and hot surfaces.
WARNING
3.1
Cleaning the cross counter flow heat exchanger
cross counter flow heat exchanger
.
ATTENTION
☞
The blades must not be damaged in the process!
Do not use water or aggressive cleaning agents!
3.2
Filter change
In order to change the filter,
. The large
inspection opening on the front of the compact unit enables easy filter replacement for outside air and
extracted air filters (Fig.32/33). Supply air F7 filters (accessories) are optional.
IMPORTANT
☞
When using F7 filters, pay attention on air flow direction arrows on the filter labels! The air flow
direction is shown on the unit label.
The KWL compact unit is equipped with outside and extract air filter class G4 as standard (to DIN EN
13779):
Outside air/extract air:
Spare filter Course G4
2 units
ELF-KWL 220 D/4/4
Order No. 9638
Spare filter Fine/pollen F7
1 unit
ELF-KWL 220 D/7
Order No. 9639
Spare filter Course G4
2 units
ELF-KWL 340 D/4/4
Order No. 4239
Spare filter Fine/pollen F7
1 unit
ELF-KWL 340 D/7
Order No. 4240
NOTE
☞
The filters are to be checked regularly (see controller display, factory setting every 6 months)
depending on the degree of pollution, to be cleaned if necessary. By vacuuming once or after a
maximum of 1-year operation they must be replaced for hygienic reasons.
If the filters should be moist or mouldy, they must be changed immediately!
TIP!
