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Evaporator
When you notice a coating (for example dust or dirt) on the surface of
the evaporator (coil fi ns), you should wipe it off. The fi ns are extremely
sensitive. Never wipe, e.g. with a cloth, directly on the delicate fi ns. Use
protective gloves to protect your hands from cuts.
This is what to do:
1. Shut down the heat pump using the ON/OFF button.
2. Optima 600-1100: Unscrew the screws and remove the protective
grille from the reverse of the heat pump.
Optima 1400-1700: Here you will find an evaporator on the front
and rear sides. Detach the covers as described in Unscrew the protec-
tive covers. The rear cover can only be tilted outwards because the
pipes are connected here.
3. Spray a degreasing agent on the fins of the evaporator.
4. Rinse off the coating and degreasing agent with water. Do not expose
the fins to too high a water spray pressure as this can damage them.
When the evaporator is extremely dirty you can rinse the coil from
inside the inspection hatch. Any cleaning agent is collected in the
drainage hose.
Snow and ice
In some locations during periods of snow, snow can accumulate inside
the protective grille on the rear side (Optima 600-1100). Remove the grille
and carefully brush away the snow without damaging the fi ns. It is not
necessary to refi t the grille. If snow attaches/sticks to the holes of the
protective covers, brush it off (all Optimas).
Also remove any snow or ice from the grille on top of the heat pump.
The pump is supplied with defrost functions which can be set by the
installer. In the event of any problems, these may need adjusting. Contact
your dealer.
Clean the dirt from the coil fi ns using a
degreasing agent and water.
Maintenance
Particle fi lter
It is the particle fi lter (dirt fi lter) that ensures no particles or dirt enter the
heat pump. Over time the fi lter can become clogged and must be cleaned.
To clean the fi lter:
1. Shut down the heat pump using the ON/OFF button.
2. Close the valve and unscrew the sealing cap.
3. Loosen the circlip holding the screen in the valve. Use the supplied
circlip pliers.
4. Lift out the screen from the valve and wash clean with water.
5. Refit the screen, the circlip and sealing cap.
6. Open the valve and start the heat pump using the ON/OFF button.
The particle fi lter is installed on the
return pipe.
Note
Screen
Circlip
Sealing cap
During fan defrost, ice can detach
from the fan grille and be thrown at
high velocity. Do not stand too close
and do not look directly into the fan
during defrost.
Warning
Optima 600-1100
Optima 1400-1700