Hoefer RCB20-PLUS - Manual (Page 30)

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8. Safety Features / Troubleshooting
8.1 Protection
Protection of Compressor
The compressor has a built-in over-pressure protector
and over-current protector. Power to the compressor
will be stopped if excessive water pressure or current
is detected.
Low / No Water Protection
The heating element will stop heating if the
temperature becomes too high as a result of low
water level.
Over-Current Protection
The RCB20-PLUS is protected with a fuse in case
of electronic failure. If the fuse does trip, the unit
should be evaluated and the cause determined prior
to installing a new fuse, and powering the unit.
8.2 Alarms
Temperature Sensor Open-Circuit Alarm
If the temperature sensor (PT100) detects an
open-circuit, an alarm will sound, the visible “alarm”
light will display and power will shut off.
Temperature Sensor Short-Circuit Alarm
If the temperature sensor (PT100) detects a circuit
short, an alarm will sound, the visible “alarm” light
will display and power will shut off.
Low Liquid Level Alarm
If the liquid level is low, an alarm will sound but the
unit will continue running.
Over-Temperature Alarm
When the bath solution temperature exceeds the set
temperature by 10 °C an alarm will sound and the
visible “alarm” display will light.