Despatch RBC1-50 with Protocol Plus - Manual (Page 24)

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5. If temperature of the chamber exceeds the high-limit setting on the control, the
heater will shut down and the Alarm Horn and red pilot light will energize. The
heater will shut off. To silence the alarm:
•
Depress the Alarm Silence switch, this is a momentary switch, it will return
to its normal position when released.
•
The alarm horn will be silenced, but the red alarm pilot light will remain lit.
•
When the overtemperature condition clears, press RESET on the control.
•
The heater should be back on and the control should be functioning
correctly.
•
If the high-limit trips repeatedly, verify the cause of overtemperature and
correct problem.
6.
If the fan stops running during process, the Airflow switch will trip and the Alarm
Horn and pilot light will energize. The heater will shut off.
•
Shut down the chamber and correct the problem.
7. Shut down chamber by lowering the
setpoint on the control, usually to ambient,
20
°
C (70
°
F).
8. Turn the power switch to OFF.
WARNING:
On all manual and on all auto
processes, the fans should remain
in operation until oven temperature
is below 150
°
C (300
°
F).