Flowserve NRS 1-50 For TWO Electrodes User Manual download pdf (Page 20)

Operation

Activity Indication Function

Level electrode(s) submerged.

Green LEDs for level

electrode 1 / 2 illuminated.

Output contacts are closed.

Signal outputs 1 / 2 open.

Alarm

Level electrode(s) exposed,

level below low water level

(LW).

Red LEDs

for level electrode 1 / 2 are

ﬂashing.

De-energizing delay is running.

Signal outputs 1 / 2 are closed instantaneously.

Red LEDs

for level electrode 1 / 2

illuminated.

Delay time has elapsed, output contacts open.

Signal outputs 1 / 2 are closed.

Test channel 1 and 2

During operation:

Press key 1 or 2 and hold it

down until the end of the test,

level switch must react as if

there was an alarm.

Red LEDs

for level electrode 1 / 2 are

ﬂashing.

Alarm simulated in channel 1 or 2.

De-energizing delay is running.

Signal outputs 1 / 2 are closed instantaneously.

Red LEDs

for level electrode 1 / 2

illuminated.

Delay time has elapsed, output contacts open.

Signal outputs 1 / 2 are closed.

Test ﬁnished.

Operation, Alarm and Test

Indicators and adjustors

Fig. 14

Attention

Before carrying out the fault diagnosis please check:

Mains supply:

Is the level switch supplied with the mains voltage speciﬁed on the name plate?

Wiring:

Is the wiring in accordance with the wiring diagram and the relevant schematic

representation of arrangement?

Conﬁguration:

Are the code switch settings

4 and 5

correct for the number of level

electrodes used?

LED alarm 2 /

operating mode

Level electrode 1

Test & diagnosis

button

LED alarm 1 /

operating mode

Level electrode 2

Test & diagnosis

button

Diagnosis LED

Troubleshooting

Indication, diagnosis and remedy

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Flowserve NRS 1-50 For TWO Electrodes User Manual Page 20

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