eta eHACK 20-50 kW, Service Manual

Page: 5 / 76

Cleaning and maintenance Maintenance notes
5
Follow the on-screen instructions and carry out all
steps carefully. Enter your name at the end of
maintenance (
button) and save the maintenance
with the button.
Fig. 2-3: End of maintenance
To end maintenance prematurely, press the right
arrow key several times until you get to the end.
There you can end the maintenance with the
button. Cancellation during a maintenance step is not
possible.
Explanation of the maintenance switch
The maintenance switch on the boiler is needed for
performing maintenance with the aid of the
[Main-
tenance] function in the ETAtouch control system. This
displays the individual maintenance steps on the boiler
screen.
With this variant the heating mode is stopped, but
the boiler remains on at the mains switch. So that
all drives are disconnected, the safety chain of the
boiler is disrupted with the maintenance switch. The
screen will display a message when it is time to actuate
the maintenance switch.
Fig. 2-4: Maintenance switch
The maintenance switch is marked with the
symbol and has two settings.
• "1" = regular operation
This is the standard position of the maintenance
switch. The boiler can execute heating mode in this
position.
• "0" = maintenance mode
In this position, all drives are disconnected to
perform maintenance. The circuit boards,
however, are still live.
Explanation of pictograms
Switch the boiler on/off with the mains
switch.
Perform a visual check of the components.
Clean the components with a soft cloth, for
example.
Remove deposits with a vacuum cleaner or
an ash vacuum.
Remove deposits with the poker.
Remove deposits with the cleaning brush.
Replace the wear parts (e.g., seals) with new
items.
Lubricate the components. The lubricant to
use is listed in the respective step.
Mount the components (e.g., screws or nuts)
by hand only, without tools.
Install the components with some force (e.g.,
the retaining tube or the Lambda probe).
Handle the components carefully, since they
break very easily.
Measure or check dimensions or clearances
on the components.
Mark the components so that the correct
position can be found, for example, when
mounting.
Wear a protective mask to avoid injuries to
the airways.