Flowserve NRR 2-40 - Manual (Page 22)

22
Operation
– continued –
Relay test high/low-level alarm
Hold down button .
LED 4 goes out.
A low-level alarm is simulated for
switchpoint 4.
Press button briefly.
The test mode is active for 5 seconds.
Indicator LED 4 goes out
LEDs illuminated
briefly
Hold down button .
LED 1 goes out.
A high-level alarm is simulated for
switchpoint 1.
Indicator LED 1 goes out
System Malfunctions
There are four types of system malfunctions that might occur in the level electrode
and the level controller:
■ Max. admissible temperature in electrode terminal box exceeded
■ No or faulty communication between controller and electrode
■ Malfunction in CAN bus
■ Failure of 24 V power supply unit built in level controller NRR 2-40
The terminal strip of the NRR 2-40 is live during operation.
This presents the danger of electric shock.
Cut off power supply before mounting or removing the equipment.
Attention