15
PROGRAMMING & OPERATING INSTRUCTIONS
“Z” CONTROLLER
This controller provides five (5) automatic cooking chains
which the user can program. It will also a low non-automatic
cooking and cook & hold operations. The fan motor can be
controlled to cycle on and off with the elements or run
continuously. High or low fan speeds can also be selected.
The cooking chains are particularly useful when the user is
producing batches of the same product time after time,
especially if changes to temperature or fan speed are
required during the cooking cycle. The user can program one
of the five program buttons for a particular product and
simply press one button when it is loaded into the oven. The
control will follow the programmed cooking routine
changing temperature and/or fan speeds or fan cycle/
continuous at the programmed intervals. Thus, once the
cooking chain is programmed, the user would benefit from
consistent results when cooking the same batch.
However, not all usage of the oven requires an automatic
cooking routine. In these cases, the oven can be used in a
normal manner where the times and temperatures are set
using the rotary dials. A manual Cook & Hold is also
available for holding a product after it has been cooked.
The following instructions will assist you in using this
control with your oven, but if you have any questions you
should contact the Duke Service Department on our toll free
support line: 800.735.3853.
Timer Resolution
The Timer displays time in two different scales. From 0 to
60 minutes, the time is displayed in Minutes/Seconds (“MN”
Mode). From 1 to 12 hours, the time is displayed in Hours/
Minutes (“HR” Mode). the mode indicators are located in
the first number digit to the left of the colon.
Power Input Frequency
The controller will automatically set itself to operate on
50Hz or 60Hz, depending on the power source used. All
timers and internal clocks are automatically compensated.
Temperature Scale
The controller can be set to display the temperature in °F or
°C as follows:
• Turn Power Switch to COOK position.
• Set TIME to 00:00 and TEMP so “20” is displayed
in the right two temperature digits.
• Press and hold the START TIME button for 5
seconds. The control will display “CCC” or “FFF” in
the temperature digits to indicate it has entered the
mode.
• Entering will toggle between “CCC” and “FFF”.
Pressing and holding the START TIME button again
will also toggle the setting.
• Turn Power Switch to OFF position to exit.
Time Dial
The TIME dial sets time intervals for cooking. It is used in
either programmed or manual cooking.
Temp Dial
The TEMP dial sets the temperature. The temperature
changes in 5°F or 1°C increments.
Start Time Button
The START TIME button initiates the cooking cycle
whether a programmed chain or manual time set with the
TIME dial used.
Cook HI/LO Fan Button
The COOK HI/LOW FAN button puts the control into a
cook mode and the heating elements enabled. Each time the
button is pressed, the control switches between the high or
low speed fan. If neither fan is enabled, the high speed fan is
selected automatically. The HI FAN and LO FAN
indicators show which fan speed is selected.
Hold Button
The HOLD button is used to set up the Hold Mode. The user
presses the HOLD button and sets the desired temperature
and continuous or cycled fan. During the Hold setup mode,
the HOLD indicator is lit and the CYCLE indicator is lit if
the cycled fan is selected.
During the cook portion hold mode, the timer counts down
to zero. During the hold portion, the timer counts up from
zero.
Fan Con/Cyc Button
The FAN CON/CYC button enables the fan to run
continuously during the cooking cycle, or run only when the
control is calling for heat. The display will show FAN CYC
when the cycled fan mode is selected and FAN CON when
the continuous mode is selected. The CYCLE indicator will
light when the cycled fan is enabled.
Program Mode On/Off Button
This button allows the user to activate the programming
mode. When this mode is selected, normal oven operation is
suspended. The programming mode allows the user to
program the cook chains. When this button is pressed again,
the program mode is exited and normal oven operation is
resumed. When the programming mode is entered the PGM
indicators flash.
Event # Button
During the programmed chain cooking operation, this button
is used to recall the time remaining in the current event. In
the programming mode, this button is used to sequence to
the next event to be programed. During manual operation,
this button is disabled.
Program Buttons (1 - 5)
The five (5) programming buttons are provided for chained
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