Inspection and maintenance
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Greenstar – 6721822579 (2021/01)
▶ Rinse the heat exchanger with water from the top.
Fig. 96 Rinsing the heat exchanger
▶ Clean the condensate tray (with reversed brush).
Fig. 97 Cleaning the condensate tray
▶ Rinse the heat exchanger with water from the top.
▶ Clean the condensate trap connection.
▶ Close the inspection opening again using a new gasket and tighten
the screws with a torque between 4.1 ft-lbs (5.5 Nm) and 5.1 ft-lbs
(7.0 Nm).
15.1.7 Cleaning condensate trap
▶ Remove condensate trap (steps 1 and 2) and check heat exchanger
orifice for clear passage.
Fig. 98 Removing the condensate trap
▶ Remove and clean the condensate trap lid.
▶ Check condensate hose and clean if necessary.
▶ Fill the condensate trap with approx. 1 cup (1/4 l) of water and
reinstall it.
15.1.8 Checking the mixer diaphragm
▶ Open the mixer unit.
▶ Carefully remove the diaphragm from the fan air intake and check for
contamination and cracks.
Fig. 99 Opening the mixer unit
▶ Insert the diaphragm into the fan connector.
The diaphragm flaps must open upwards.
▶Close the mixer unit.
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