Flowserve NRS1-40.1 Manual de usuario descargar pdf (Pagina 27)

Malfunctions

Fault finding list for level electrode NRG 1.-40 / control unit NRS 1-40.1

Water level below switchpoint "Low water (LW)" - no low level alarm

Fault:

LED "Power" and LEDs 1 - 4 are not illuminated.

Remedy:

Apply mains voltage, wire equipment in accordance with wiring diagram.

Fault:

The electrode rod(s) is/are too long.

Remedy:

Cut electrode rod(s) to the length dictated by the switchpoint LW.

Fault:

If the electrode is installed inside the boiler: The vent hole in the protection tube does not exist

or is obstructed.

Remedy:

Check installation of level electrode. Make sure that the level in the protection tube corre-

sponds to the actual water level.

Water level not yet below switchpoint "Low water (LW)" - but a low level alarm is raised

Fault:

The electrode rod(s) is/are too short.

Remedy:

Replace electrode rod(s) and cut electrode rod(s) to the length dictated by the switchpoint LW.

Fault:

The earth connection to the vessel is interrupted.

Remedy:

Clean seating surfaces and screw in the electrode together with the supplied joint ring

∅

27x32 DIN 7603. Do not insulate the electrode with hemp or PTFE tape!

Fault:

The insulation of the level electrode is faulty.

Remedy:

Replace level electrode.

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Flowserve NRS1-40.1 Manual de usuario Pagina 27