Cleaning The Evaporator On The Bwl-1S(B); Cleaning The Condensate Pan / Condensate Drain; Cleaning The Casing; Cleaning The Dirt Trap / Sludge Separator - Wolf BWL-1S-05 Installation And Operating Instructions Manual

38.2 Cleaning the evaporator on the BWL-1S(B)
In areas with high concentrations of dust or pollen, shorter cleaning intervals may be necessary
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alongside the mandatory annual inspection and cleaning, in order to ensure that the system
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operates efficiently. Adjust the cleaning interval to suit the local conditions.
The evaporator must be checked annually for dirt/contamination and cleaned if necessary. Wet cleaning
with a commercially available garden hose is recommended. Contaminated fins may reduce the system's
transfer performance and consequently its energy efficiency, and in the worst case scenario may result
in system failure.
When cleaning, ideally use a wide nozzle with a spray angle of 15° - 20°. To prevent damage to the fins,
direct the water spray at the evaporator surface from the front at an angle of 90°. When cleaning, the
water pressure should not exceed 2 - 3 bar.
Never spray the fins from the side, as this may cause them to become deformed or bent. Maintain
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a distance of approx. 20 cm to 30 cm from the evaporator surface.
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38.3 Cleaning the condensate pan / condensate drain
Before the heating season, remove any dirt (leaves, twigs, sludge, etc.)
from the condensate drain.
Before opening the appliance, ensure that all power circuits
are isolated from the power supply.
When cleaning, avoid using sharp or hard objects in order to prevent damage to the evaporator and
condensate pan.
In extreme weather conditions (e.g. drifting snow), ice may occasionally form on the intake and discharge
grilles. In this event, remove any ice and snow from the intake and discharge areas to ensure the minimum
air flow rate.
Regularly check and clean the condensate pan to ensure correct drainage. Check and clean the
condensate drain hose. For correct drainage, ensure that there is a continuous fall.
38.4 Cleaning the casing
The appliance can be cleaned with a damp cloth and commercially available detergents. Never use
abrasive cleaners or detergents containing acid or chlorine on the appliance surfaces.
38.5 Cleaning the dirt trap / sludge separator
Install a dirt trap/sludge separator in the heating return. This ensures that neither particles nor dirt can
get into the plate heat exchanger (condenser) of the heat pump. Condenser blockages and any resulting
high pressure malfunctions are thereby prevented.
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Maintenance / cleaning
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