5 Servicing the system
5.1 General information on servicing
DANGER
When working on electrical components:
Risk of electrocution!
When work is carried out on electrical components:
❒ Always have work carried out by a qualified electrician
❒ Observe the applicable standards and regulations
➥ Work must not be carried out on electrical components by unauthorised
persons
WARNING
When inspecting and cleaning the boiler with the main switch on:
Serious injuries possible due to automatic boiler startup!
Before inspection and cleaning work in/on the boiler:
❒ Switch the boiler off by tapping “Boiler off”
The boiler follows the shutdown procedure and switches to "Boiler off“ mode
❒ Allow the boiler to cool for at least 1 hour
❒ Switch off the main switch and take precautions to prevent accidental
switching on
WARNING
During inspection and cleaning work on the hot boiler:
Hot parts and the flue gas pipe can cause serious burns!
Take the following precautions:
❒ It should be standard practice to wear protective gloves when working on the
boiler.
❒ Only operate the boiler using the handles provided
❒ Before starting work, switch off the boiler and allow it to cool down for at least
1 hour
NOTICE
We recommend that you keep a maintenance book in accordance with ÖNORM
M7510 of the Technical Directive for Fire Prevention (TRVB)
Servicing the system
5
General information on servicing
Operating Instructions T4e | B1560520_en 51
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