Flowserve NRR 2-40 - Manual (Page 21)

21
Operation
Normal operation
Normal operation, controller is working.
The green LEDs 2 and 3 flash when the
external control valve is opened or
closed.
All LEDs go out when the setpoint is
reached.
The LED “Power” is illuminated. LEDs flash when the control valve is motored
LED “Power” illuminated
There are two types of alarm:
■ High-level alarm
■ Low-level alarm
LED 1 changes after the de-energizing
delay from rapid flashing to lighting.
LED 4 changes after the de-energizing
delay from rapid flashing to lighting.
illuminated flashes
flashes illuminated
Alarm
High-level alarm
Low-level alarm