67
Cleaning with compressed air
1.
Open the outdoor unit casing.
Danger
The sharp edges of the heat exchanger
(evaporator) can cause injuries.
Avoid contact.
2.
Clean the heat exchanger
from the inside out
with compressed air.
!
Please note
Excessive air pressure from the front and
sides can result in the deformation of the
aluminium fins of the heat exchanger.
Only point the compressed air gun at the
heat exchanger from the front and from an
adequate distance.
3.
Check the aluminium fins of the heat exchanger for
deformation and scratches. If necessary, repair
with a suitable tool.
4.
Close the outdoor unit casing.
Checking the outdoor unit electrical connections for firm seating
Danger
Contact with live components can lead to seri-
ous injury from electric current. Some compo-
nents on PCBs remain live even after the power
supply has been switched off.
■
When working on the outdoor unit, isolate the
system from the power supply, e.g. at a sepa-
rate MCB/fuse or a mains isolator. Check the
system is no longer live and safeguard against
reconnection.
■
Prior to working on the appliance, wait at least
4 min until the voltage on the charged capaci-
tors has completely dropped out.
Closing the heat pump
See page 56.
Switching on the power supply
Switch on the power supply at the main MCB/fuse.
Starting the heat pump
Observe the following sequence:
1.
Switch ON outdoor unit voltage.
2.
Switch ON indoor unit voltage.
3.
Start indoor unit at the ON/OFF switch.
Commissioning, inspection, maintenance
Cleaning the outdoor unit heat exchanger…
(cont.)
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