Alarm board Hydrocarbon separator and grease separator

Once all the connections have been made correctly, the switchboard should show all the signals switched off until the circuit breaker is switched on, at which point the yellow LED (24V-) on the RND20 switches on.

The level relay (RN020) monitors the level of water in the tank via the probes.

Whenever water is no longer in contact with one of the probes due to a build-up of grease or a lack of water, the RND20 relay switches on (10-12), switching on the MCS-AL alarm module's red light and audible alarm, which can be switched off using the corresponding switch.