eta ePE-K, Service Manual

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Cleaning and maintenance Cleaning (customer)
15
2.5 Cleaning (customer)
2.5.1 Preparation
Stop heating
Stop the heating mode of the boiler with the on / off
switch
in the overview of the boiler. The boiler
emits a glowing charge and then switches to operating
mode [Switched off]. Then press the [De-ash]
key
to allow the boiler to perform a final ash removal.
WARNING!
Switch off the electricity to the boiler via the mains
switch
 Switch off the electricity to the boiler via the mains
switch. This prevents injuries caused by switching
the boiler on inadvertently.
WARNING!
Burns caused by hot parts
Risk of burning on parts located behind the
boiler housing, even after shutting the boiler
down.
 Allow the boiler to cool down sufficiently
before starting any activities.
2.5.2 Check safety devices
Check safety valves
Check all safety valves of the heating system by
means of a visual inspection. The outlets of the safety
valves must not drip.
Fig. 2-11: Safety valve
If the safety valve drips, open and rinse the safety
valve with a 1/4 turn of the red cap (danger of
scalding). If the safety valve still cannot be sealed
effectively after being rinsed several times, it must be
cleaned or replaced by an installer (heating techni-
cian).
A manual check of the safety valve is carried out
with a 1/4 turn of the red cap. This rinses the
safety valve. It is however very likely that the seal will
be damaged in the process and thus the outlet will drip.
Therefore, only carry out the check on weekdays,
never on weekends in the cold winter, because there is
probably no heating technician available if the seal is
defective.