GESTRA NRG 10-52, Оригинальное руководство по установке и эксплуатации

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23 NRG 10-52, NRG 16-52 - USA - Installation & Operating Manual -
850696-00
Bringing into service, fault indications and troubleshooting
You can find information on bringing into service, faults and troubleshooting in the Installation &
Operating Manual of the NRS 1-56 level switch.
Taking out of service
DANGER
Danger to life! Escaped hot steam can cause scalding.
Hot steam or hot water can escape suddenly if the level electrode is unscrewed under
pressure.
■
Reduce the boiler pressure to 0 psi (0 bar) and check the pressure before
unscrewing the level electrode.
■
Only remove the level electrode at
0 psi (0 bar) boiler pressure
.
WARNING
The hot level electrode can cause severe burns.
The level electrode gets very hot during operation.
■
Always let the level electrode cool down before performing installation and
maintenance work.
■
Only remove level electrodes that have cooled down.
Proceed as follows:
1. Reduce the boiler pressure to 0 psi (0 bar).
2.
Allow the level electrode to cool to room temperature.
3.
Switch off the supply voltage.
4.
Pull out the connector.
5. Then remove the level electrode.