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4.8
Fitting the cover plate
Grease the seal if necessary.
Insert the key and unlock by turning it anti-clockwise.
Fit the cover plate as shown.
Lock the cover plate by turning the key clockwise.
The cover plate is installed.
4.9
Leak test
Make sure that the system is currentless.
Feed clear water into the system tank until it reaches the
top edge of the system tank (not of the upper section).
Check whether humidity is escaping at one of the connec-
tions.
Pump the water out.
Installation and operating instructions
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