Despatch RBC1-50 with Protocol Plus - Manual (Page 30)

26
OPTIONAL ACCESSORIES
This section provides operating instructions on the standard options for the RBC1-50
Burn-In oven.
Door Switch
The door switch is wired to shut off the fan and
heater. In addition, when the N
2
and LN
2
options are
installed the door switch will shut these down. The
door switch may be defeated manually by pulling
out the actuator.
Recorder
The circular chart recorder, mounted on top of the
oven, is used to record the user’s process. This is
done by an independent thermocouple, located
next to the control thermocouple. The charts used
are 24hr/7day. This option is available in a single
pen for stand-alone units or a two pen for units
using the stacking option. See the manufacturer’s
manual on the recorder instrument attached to this manual.
Redundant High-Limit
The redundant high-limit is located on the equipment panel behind the control panel
door. The temperature is sensed by an independent thermocouple, located next to the
control thermocouple. To operate the redundant high-limit, set the dial to the desired
temperature, this is usually set at a temperature just below the safe maximum
temperature of the product, but not too low to interfere with the process. If temperature
of the chamber exceeds the high-limit setting on the redundant high-limit, 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 redundant
high-limit.
WARNING:
Disconnect the main power
switch or power cord before
attempting any repair or
adjustment.
WARNING:
Do not use oven in wet, corrosive
or explosive atmospheres.
WARNING:
Failure to heed warnings in this
instruction manual and on the
oven could result in personal
injury, property damage or
death.