Shellab SVAC9-2 - Manual (Page 13)

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CONTROL OVERVIEW
20.0
20.0
RES E T EZ1
EZ2
2
C
CURRENT OVEN CHAMBER
TEMPERATURE
TEMPERATURE SET
POINT (YOUR DESIRED
TEMPERATURE)
INDICATES THAT THE
CONTROLLER IS POWERING THE
OVEN’S HEATER
RAMPING SYMBOL INDICATES
THAT A HEATING PROFILE IS
RUNNING
THE ADVANCE KEY SCROLLS
THROUGH MENUS AND
PARAMETER LISTS
THE DOWN ARROW KEY
ADJUSTS SET POINTS OR
CHANGES PARAMETERS
THE UP ARROW KEY
ADJUSTS SET POINTS
OR CHANGES PARAMETERS
THE RESET KEY
SCROLLS 1 PAGE BACK
THE EASY ZONE KEY 1
INITIATES AND ENDS
HEATING PROFILES
Watlow Controller Details
Power Switch Unit
The main power switch on the control panel (green lighted I/O) controls all power to the unit and
must be in the I (ON) position before any systems are operational. The switch will be lighted when
in the on position.
Power Switch Vacuum
This I/O (on / off) switch is marked VACUUM and controls power to a vacuum pump plugged into
the 230VAC outlet in the cabinet. The switch will illuminate when in the on position.
Over Temperature Limit Thermostat (OTL)
Labeled SET OVER TEMPERATURE and equipped with a graduated dial and independent
temperature probe, the OTL system guards against an uncontrolled rise in oven chamber
temperature. This allows continued operation of the oven in the event of a main controller failure,
until the problem can be corrected. Please see the
OTL entry in the Theory of Operation section on
page 17 for a more detailed description of the system.
Figure 7: Control Panel SVAC9-2 and Watlow Temperature Controller