Specifications

19
Installation and Operation of 613 & E Series Gas Fired Convection Oven
Set
Screw
Cam Door
Switch
Door
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Electro-Mechanical Controls Only (“V”). Not applicable
to Ovens with Solid State Controls.
In many convection ovens thermostats have been
the cause of more operating problems than any other
component part. Thermostats, being mechanical
devices, do sometimes fail, in which case only replacing
the part will correct the problem. However, the great
majority of thermostat related problems could be
attributed to their being out of adjustment (calibration).
A thermostat that is out of calibration may cause
unsatisfactory cooking results such as uneven baking,
prolonged cooking times, etc. If you are experiencing
uneven cooking, it may be a result of excessive cooking
temperatures. Refer to the cooking chart provided in
Operating Instructions Section C.
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• Turn the oven on by turning the Power Switch to
the ON position.
• Open the doors and place a thermocouple in the
center of the middle oven rack. A reliable mercury-
type thermometer can be substituted if a pyrometer
is not available.
• Turn the thermostat dial to 350°F (177°C). Allow
the oven to preheat 1/2 hour.
• When the indicator light goes out, the thermostat has
been satised. Check the pyrometer or thermometer
to determine the internal oven temperature.
• If the reading on the pyrometer (or thermometer)
is less than 10°F different from the setting of
the thermostat, no adjustment is needed. If this
reading is more than 10°F, proceed with calibration
procedure.
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• Remove the thermostat knob by loosening the
setscrew and pull the knob forward. Take care not
to rotate the thermostat stem, which will change
the setting.
• With a very small screwdriver, turn the screw located
in the bottom of the hollow of the stem clockwise
to lower the temperature or counterclockwise to
raise the temperature. DO NOT allow the stem of
the thermostat to rotate as you turn the screw.
• Open the door and turn the POWER SWITCH to
the COOL DOWN position. This will allow the oven
fan to come on without the burners and cool off
the oven. Allow the oven to cool to about 250°F
(120°C).
• Return the to the position and
repeat the previous steps until the oven thermostat
and the pyrometer (thermometer) reading agree.
• Replace the knob and tighten the setscrews.
Rotation Screw "A"
Dial Shaft "B"
1/4
turn
Decrease
Increase
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This thermostat is a direct-acting (opens on
temperature rise) device.
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
The gas pressure has been preset at the factory for
the type of gas specied on the rating plate; however,
it is sometimes necessary to adjust the gas pressure
after the unit has been installed.
• Turn the Gas Shut Off Valve to the OFF position.
• Remove the Control Panel by removing the screw
at the top overhang above the panel.
• Pull the Control Panel forward and lay aside.
Do not remove any wiring.