Flowserve NRR 2-40 - Manual (Page 26)

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LED “Power” flashes slowly.
Fault: The power supply unit (PSU) is overloaded and may be misused for other
components.
Remedy: Check load of power supply unit. Be sure to use the PSU only for the
voltage supply of bus-based network components.
Disconnect the system from its power supply. After 5 sec. apply power
and restart system.
System malfunction 4
System Malfunctions
– continued –
LED flashes slowly
Fault: Power supply unit defective.
Remedy: Replace PSU.
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.
Device does not work – no function
Fault: LED “Power” does not light up.
Remedy: Apply power. Connect the equipment properly, referring to wiring
diagrams.
Operation Malfunctions
Attention
Fault-finding list for troubleshooting