NOTICE
We recommend you keep a maintenance book in accordance with ÖNORM
M7510.
5.2 Inspection and cleaning
❒ Regular cleaning of the boiler extends its life and is a basic requirement for
smooth running.
❒
Recommendation: use an ash vacuum for cleaning.
5.2.1 Prior to heating up
Always move the WOS lever
❒
Pull the lever of the cleaning system several times before heating up
(up and down 5 – 10 times)
5.2.2 Inspection
Checking the system pressure
❒ Check the system pressure on the pressure gauge
➥ The value must be 20% above the pre-stressed pressure of the expansion tank
NOTICE! Check that the position of the pressure gauge and rated pressure of
the expansion tank match your installer's specifications!
If the system pressure decreases:
❒ Top up with water
NOTICE! If this happens frequently, the seal of the heating system is faulty! Inform
your installer
If large pressure fluctuations are observed:
❒ Ask an expert to inspect the expansion tank
5
Boiler Servicing
Inspection and cleaning
32 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com
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