Flowserve NRGS 16-1 Manual do Utilizador descarregar pdf (Página 15)

Annex

Warning

The terminal strip of the NRGS 16-1/NRGS 16-1S is live during operation.

This presents the danger of electric shock.

Cut off power supply before removing or replacing housing cover.

Fault finding list

Level has exceeded switchpoint “High water” – no function

Fault: Mains voltage has not been applied.

Remedy: Apply mains voltage. Wire equipment according to the wiring diagram.

Fault: The thermal fuse has failed.

Remedy: In case of defective thermal fuse the mains voltage has not been

connected to terminal : Replace defective thermal fuse

(Order No. 051629).

The ambient temperature must not exceed 70 °C.

Fault: The electric conductivity is too low.

Remedy: Switch DIP switch to ≥ 0.5 µS/cm.

Fault: The electrode housing does not have earth connection to the boiler.

Remedy: Clean seating surfaces and insert metal joint ring (of stainless steel 1.4301)

33 x 39 to DIN 7603.

Do not insulate compact system with hemp or PTFE tape!

Fault: Electronic board is defective.

Remedy: Replace board (Order No. 391321).

Level has fallen below switchpoint “Low water” – no function

Fault: The electrode rods have earth contact.

Remedy: Change installation position.

Fault: The vent hole in the protection tube does not exist, is obstructed or flooded.

Remedy: Check protection tube and, if necessary, provide vent hole.

Fault: The isolating valves of the external measuring pot (optional) are closed.

Remedy: Open isolating valves.

Switchpoint has been reached – incorrect function

Fault: The switching function has not been correctly allocated. Electrode rods

have been cut to the wrong size.

Remedy: Identify electrode supply wire and reconnect accordingly.

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Flowserve NRGS 16-1 Manual do Utilizador Página 15