8
SECTION 5
CONTROL PANEL OVERVIEW
(Figure 2)
5.1 POWER
SWITCH:
This is the main power I/O (On/Off) switch. It must be in the
ON position before any systems are operational.
5.2 MAIN TEMPERATURE CONTROL:
This is the Main Temperature control
consisting of the digital display and UP/DOWN arrow pads for adjusting set point
temperatures and calibration.
5.3 HEATING
LIGHT:
This green indicator light is on whenever the MAIN
TEMPERATURE CONTROL has activated the heating elements to reach and
maintain set point.
5.4 CIRCUIT
BREAKER/FUSE:
This control is completely independent of the MAIN
TEMPERATURE CONTROLLER and guards against any failure which would allow
temperature to rise past the Temperature set point. Setting adjustments for this
control require a flat-edged tool to eliminate accidental changes. The control has a
dial that is marked from 0 to 10 and is adjustable across this scale. If the set point
is exceeded, the Circuit Breaker/Fuse will limit the rise to approximately 10
°
C
above the set point selected.
5.5 OVER TEMPERATURE LIGHT:
This red indicator light is on whenever the
temperature has exceeded the set point of the MAIN TEMPERATURE CONTROL
and the CIRCUIT BREAKER/FUSE is activated and taken control of the oven.
Under normal operating conditions this pilot light should never be on.
5.6 FUSE:
This control, mounted on the rear wall next to the power cord, provides
protection for the unit’s electrical circuitry against power fluctuations. The fuse,
when blown, must be replaced before the unit can continue operation.
5.7 VACUUM:
This adjustment handle allows opening and closing of the vacuum
valve to an external vacuum pump or system.
5.8 VENTILATION:
This adjustment handle controls the vacuum release valve. This
valve must be closed (completely clockwise) when the unit is in the vacuum mode.
5.9 VACUUM
GAUGE:
This gauge indicates the chamber operating pressure in
millibars.