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u Reassemble the fan unit in reverse order. Observe the illus-
tration of the cable guide.
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1 Pressure hose
u Connect the pressure hose to the fan unit.
u Follow the steps described above for the second fan unit.
13.3 Cleaning the preheating coil
ü The appliance is disconnected from the power supply.
ü The preheating coil has cooled down. Otherwise, there is a
risk of burning.
u Dismantle the preheating coil as described in chapter Re-
positioning the preheating coil [} 43] .
If heavy soiling is visible, you can remove the heating element
together with the PCB and safety assembly.
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Cleaning (qualified contractors)
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1 Safety assembly
u Undo the two screws on the front of the preheating coil.
u Remove the preheating coil cover.
A safety assembly is secured between the fins of the preheating
coil casing.
u Lift out the safety assembly.
u Pull the heating element out of the preheating coil casing.
u Clean the heating element.
u Clean the preheating coil casing.
u Reassemble the preheating coil in reverse order.
13.4 Refitting the components
u Slide the cross-countercurrent heat exchanger into the ap-
pliance.
u Position the spacer in front of the cross-countercurrent heat
exchanger.
u Fit the inner front panel.
u Install the front fascia.
u Fit the filter cover.
13.5 Checking and cleaning the air ducts
Air duct inside the appliance
u NOTICE: Cleaning fluids can reduce the resistance to humid-
ity of the EPS. This can result in loss of hygiene. Do not use
cleaning fluids or solvents. Clean the air duct with a cloth
moistened with water.
Extract and supply air
u Disconnect the air ducts from the appliance or check and
clean them through the extract air and supply air vents.
Outdoor and exhaust air
u Disconnect the air ducts from the appliance and at the wall
outlet or check and clean them through the outside wall
outlet.
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