5 .1 Opening and closing the inner panel
The inner panel is fully open upon delivery (fig.13).
In order to close the inner panel, turn panel two full turns clockwise until it “Clicks” into position (fig.14)
6 .0 Servicing and maintenance
m
WARNING!
Touching live parts will lead to electric shock .
Before any servicing and maintenance work, isolate the unit from the mains power supply and protect against
being switching on again!
m
WARNING!
The rotating impeller can crush fingers .
Before any servicing and maintenance work, isolate the fan from the mains power supply and protect against
being switching on again!
– Excessive deposits of dirt, dust, grease, etc. on the impeller, motor, protection guard and, above all, between the
housing and the impeller, are not permitted, as these can lead to an unbalance in the impeller, overheating of the
motor or the blocking of the impeller. In such cases, the unit must be cleaned.
– In cases of longer periods of standstill, maintenance must be carried out when the unit is restarted.
– In case of standstill or storage for more than 2 years, the fan must be replaced.
Note the following:
• Remove deposits of dirt, e.g. on protection guards
• Visual inspection, replace damaged parts
• Freewheeling of the impeller, is impeller blocked, see Fault causes 6.3
• Vibrations – see Fault causes 6.3
• Fan unit must be inserted up to the “outer panel” stop in the wall installation sleeve
6 .1 Filter change
After the set time interval for the filter change, the upcoming filter change will be indicated on the controller by the “flas-
hing” of all ventilation stage LEDs. Proceed as follows:
1. Remove inner panel (fig.15).
2. Replace G3 filter (fig.16)
Accessories: Set/2 pcs G3 filter
ELF-KWL 45/3/3
Ref .no . 3069
3.
The inner panel is re-attached after the filter change. Ensure that the inner panel is re-inserted with the opening at the
top
.
4. Then hold down both buttons on the controller for longer than two seconds and confirm the filter change.
9
Unit
KWL EC 45
Installation and operating instructions
fig .15
fig .16
Remove
inner panel
Replace G3
filter
CHAPTER 6
SERVICING AND MAIN-
TENANCE
m
WARNING
fig .13
fig .14
¡
Inner panel
open
Close inner
panel by
turning
“Click”
EN
