Flowserve NRG211-1 Level Probe Bedienungsanleitung PDF herunterladen (Seite 18)

Annex

Fault finding list

Warning

The terminal strip of the NRS 2-4 /NRS 2-5 is live during operation. This

presents the danger of electric shock.

Cut off power supply before inserting or removing the 19" slide-in unit and

before undertaking any installation or maintenance work.

Green LED OPERATION at level switch NRS 2-4 /NRS 2-5 is not illuminated

Fault: The supply voltage has failed.

Remedy: Measure the voltage across A/C28 and A/C30 of the NRS 2-4 / NRS 2-5.

Check power supply and wiring.

No function when level falls or rises – LED

MALFUNCTION IN PROBE and

HIGH LEVEL on level switch NRS 2-4 or LOW LEVEL on level switch NRS 2-5

are illuminated

Fault: The locking screw has not been removed from the level probe NRG 211-1.

Remedy: Remove locking screw.

Fault: Defective level probe (defective insulating seal, untight stuffing box)

Remedy: Measure voltage across C18/A18 of NRS 2-4/ NRS 2-5. Measure voltage

across terminals 2 and 3 of the NRG 211-1. If voltage ≥ 9 V check probe

supply cable and wiring.

No function when level falls or rises – LED

MALFUNCTION IN CABLE on level switch

NRS 2-4 / NRS 2-5 is illuminated

Fault: Malfunction in probe supply cable (short circuit, interruption).

Remedy: Measure voltage across C18/A18 of NRS 2-4/ NRS 2-5. Measure voltage

across terminals 2 and 3 of level probe NRG 211-1. If voltage ≤ 1 V check

probe supply cable and wiring.

Level switch NRS 2-4: No function when level falls or rises or when high level

is exceeded – only the green LED

OPERATION of the level switch NRS 2-4 is

illuminated

Fault: Level probe does not enter the liquid.

Remedy: Measure voltage across C18/A18 of NRS 2-4. Check installation of

NRG 211-1 and measure voltage across terminals 2 and 3. If necessary

change position of installation of the level probe.

Fault: Defective level switch.

Remedy: Measure voltage across C16/A18 (supply voltage for level probe) on

NRS 2-4. Replace level switch if no voltage can be measured.

Fault: Defective preamplifier.

Remedy: Measure voltage across C18/A18 of NRS 2-4. Measure supply voltage

across terminals 1 and 3 of NRG 211-1 and measuring voltage across

terminals 2 and 3. If supply voltage = 12 V and no measuring voltage can

be measured, replace preamplifier.

1 2 ... 13 14 15 16 17 18 19 20 21 22

Kommentare zu diesen Handbüchern

Keine Kommentare

Flowserve NRG211-1 Level Probe Bedienungsanleitung Seite 18

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Hardware Flowserve NRG211-1 Level Probe