19
If faults occur that are not listed above or cannot be corrected, please contact our service centre or
authorized agency in your country.
Maintenance
Cleaning the electrode rod
The equipment may only be installed and removed by qualified personnel. Observe note in chapter
"Installation" on page 9.
Before cleaning the electrode rod decommission and remove the level electrode.
Clean the electrode rod with a wet cloth.
Safety note
Danger
When loosening the level electrode steam or hot water might escape!
This presents the risk of severe scalding all over the body!
It is therefore essential not to dismantle the electrode unless the boiler pressure is
verified to be 0 bar.
The level electrode becomes hot during operation.
Risk of severe burns to hands and arms.
Before carrying out installation and maintenance work make sure that the equipment
is cold.
The equipment must only be installed, wired and commissioned by qualified and competent staff.
Retrofitting and maintenance work must only be performed by qualified staff who - through adequate
training - have achieved a recognised level of competence.
Removing and disposing of the level electrode
Removing and disposing of level electrode NRG 26-21
1. Switch off supply voltage.
2. Unscrew screw
e
and remove cover
=
.
3. Disconnect the connecting wires from the terminals
b
and pull wires out of the cable gland.
4. Before removing the equipment make sure that it is neither hot nor under pressure.
For the disposal of the equipment observe the pertinent legal regulations concerning waste disposal.
