Duke 5-9 ELECTRIC Installation Manual
5/9 ELECTRIC
HALF-SIZE
CONVECTION OVEN
Installation and
Operation Manual
Please read this manual completely before attempting
to install, operate or service this equipment
This manual is Copyright © 2017 Duke Manufacturing Co. All rights reserved.
Reproduction without written permission is prohibited. Duke is a registered
trademark of the Duke Manufacturing Co.
Duke Manufacturing Co.
2305 N. Broadway
St. Louis, MO 63102
Phone: 314-231-1130
Toll Free: 1-800-735-3853
Fax: 314-231-5074
www.dukemfg.com
REV Z 12/07/2017
P/N: 155131
Installation and Operation of 5/9 Electric Convection Oven
TABLE OF CONTENTS
SPECIFICATIONS ........................................................................................................................... 3
INSTALLATION INSTRUCTIONS ...................................................................................................4
A. QUALIFIED PERSONNEL.................................................................................................4
B. DELIVERY AND INSPECTION ......................................................................................... 4
C. LOCATION OF THE OVEN ............................................................................................... 4
D. ELECTRICAL CONNECTIONS ........................................................................................4
E. OVEN ASSEMBLY .............................................................................................................5
Leg Attachment ................................................................................................................5
Caster Installation ............................................................................................................. 5
Double Sections ...............................................................................................................5
F. ADJUSTMENTS ASSOCIATED WITH INSTALLATION ..................................................5
OPERATING INSTRUCTIONS ........................................................................................................ 6
THE 5/9 SERIES OF CONVECTION OVENS ......................................................................6
A. OVEN CONTROLS ............................................................................................................ 7
Electro-Mechanical ........................................................................................................... 7
“V” Controller Operating Instructions ................................................................................ 7
Cooking ..................................................................................................................... 8
“XX” Controller ................................................................................................................. 9
“XX” Controller Programming & Operating Instructions ............................................9
“ZZ” Controller ................................................................................................................ 11
“ZZ” Controller Programming & Operating Instructions ........................................... 11
B. GENERAL GUIDELINES FOR OPERATION .....................................................................15
C. Suggested Times & Temperatures ..................................................................................... 16
D. COOK & HOLD/ROAST & HOLD RECOMMENDED TIME & TEMPERATURE ...............17
COOK & HOLD - ROAST & HOLD ................................................................................17
E. General Guidelines for Cook & Hold - Roast & Hold ......................................................... 18
MAINTENANCE INSTRUCTIONS ................................................................................................ 19
A. ADJUSTMENTS ............................................................................................................... 19
B. DOOR SWITCH ADJUSTMENT ..................................................................................... 19
C. THERMOSTAT CALIBRATION .......................................................................................19
Electro-Mechanical Controls "V". Not applicable to Ovens with Solid State Controls .... 19
To Check Calibration: .....................................................................................................19
To Calibrate the Ovens ...................................................................................................20
D. CLEANING OF THE OVENS ..........................................................................................20
5/9 – ELECTRIC CONVECTION OVEN REPAIR PARTS LIST ........................................ 21
DOOR ASSEMBLY ...............................................................................................................22
“V” CONTROLLER ASSEMBLY ........................................................................................... 23
“XX” CONTROLLER ASSEMBLY ........................................................................................ 24
“ZZ” CONTROLLER ASSEMBLY ......................................................................................... 25
CONTACTOR IDENTIFICATION ........................................................................................ 26
FLUE GUARD .......................................................................................................................27
DOUBLE STACK OVENS ....................................................................................................27
"V" CONTROLLER WIRING SCHEMATIC .........................................................................28
"XX" CONTROLLER WIRING SCHEMATIC .......................................................................29
"ZZ" CONTROLLER WIRING SCHEMATIC ....................................................................... 30
CUSTOMER ASSISTANCE ................................................................................................. 31
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Installation and Operation of 5/9 Electric Convection Oven
IMPORTANT WARNING AND SAFETY INFORMATION
FOR YOUR SAFETY:
Do not store or use gasoline or other ammable vapors or liquids
in the vicinity of this or any other appliance.
: Improper installation, adjustment, alteration, service or
maintenance can cause property damage, injury or death. Read the
installation, operating and maintenance instructions thoroughly before
installing or servicing this equipment.
THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE.
SPECIFICATIONS
TOTAL KW VOLTAGE AMPS-1 PHASE AMPS-3 PHASE
8.0 KW 208 41 24
8.0 KW 240 36 21
POWER SUPPLY CONNECTIONS
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Installation and Operation of 5/9 Electric Convection Oven
INSTALLATION INSTRUCTIONS
A. QUALIFIED PERSONNEL
These installation instructions are for the use of qualied
installation and service personnel only. Installation or
service by other than qualied personnel may result
in damage to the oven and/or injury to the operator.
Qualied installation personnel are those individuals,
rms, companies or corporations which either in person
or through an agent is engaged in and responsible for:
• The installation of electrical wiring from the electric
meter, main control box or service outlet to the
electrical appliance. Qualied installation personnel
must be familiar with all precautions required and
have complied with all requirements of state and
local authorities having jurisdiction. See: National
Electrical Code, ANSI/NFPA70.
B. DELIVERY AND INSPECTION
Duke Manufacturing Co. does everything within its power
to insure you received your oven in good condition.
They are strapped down on heavy wooden skids and
surrounded by heavy “tri-wall” cartons to prevent shipping
damage. They have all been carefully inspected before
they were packaged and consigned to the carrier.
Upon delivery of your Duke oven:
• Look over the shipping container, carefully noting
any exterior damage on the delivery receipt, which
must also be signed by the driver/ delivery person.
• Uncrate and check for any damage, which was not
evident on the outside of the shipping container.
This is called concealed damage. The carrier must
be notied within fteen (15) days of the delivery
of the oven and the carton, skid and all packaging
materials must be retained for inspection.
• The oven should be placed in an area that is free
from drafts and accessible for proper operation
and servicing.
• The area around the oven must be kept clear
of combustible materials. Refer to the Oven
Placement Clearances Chart before installing the
oven.
OVEN PLACEMENT CLEARANCES CHART
COMBUSTIBLE NON-COMBUSTIBLE
Right Side 1" 0"
Left Side 1" 0"
Rear 3" 3"
Floor 8" 8"
It is also important not to obstruct the natural ow of
ventilation air if the oven is to operate properly. This
oven should not be installed on a curb base or sealed
to the wall. Either condition can restrict the ow of air to
or prevent proper ventilation of the blower motor. The
blower motor has a thermal protection device, which will
trip, because of excessive ambient temperatures at the
back of the oven. This condition should be corrected
immediately to avoid damaging the oven permanently.
The ue located near the top at the rear of the oven
must not be obstructed. Proper ventilation is important
to avoid high tempteratures at the rear of the oven. High
temperatures can cause premature blower motor failure.
Before making any connections to the oven, check the
specication plate to be sure the oven specications
concur with the voltage and phase to be supplied to
the oven.
The specication plate is located behind the lower front
panel. To access the specication plate, loosen the four
screws below the doors, and pull the panel outward.
Duke Manufacturing Co. cannot assume liability for
loss or damage suffered in transit. The carrier assumes
full responsibility for delivery in good order when the
shipment was accepted. However, we are prepared to
assist you in ling your claim.
C. LOCATION OF THE OVEN
Proper planning and placement of the oven will give you
the best results in terms of long-term user convenience
and satisfactory performance. We urge you to give
adequate thought in the placement of your oven prior
to its arrival.
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The specication plate bearing the oven’s serial number
is attached to the underside of the upper ledge above
the control panel.
D. ELECTRICAL CONNECTIONS
The oven is supplied for connection to a 208 or 240 volt
grounded circuit. The electric motor, indicator lights and
control circuits are connected internally and require no
secondary power supply.
Before making any connections to these units, check
the specication plate to assure that the voltage and
Installation and Operation of 5/9 Electric Convection Oven
phase of the oven is compatible with the electrical
supply. When installing, all ovens must be electrically
grounded in accordance with local codes or in the
absence of local codes, with the National Electrical
Code, ANSI/NFPA 70 (in Canada – CSA Std. C22.1).
Wiring diagrams are located in the control compartment
area. Standard wiring schematics are also included at
the back of this manual.
The proper method of connecting the power source
to the terminal block is shown on page 3.
Note to Electrical Inspector: Inspection of
electrical connection should be accomplished by the
removal of the Control Panel. This is done by loosening
the three screws located at the bottom of the door
opening and remove lower trim piece. Then remove
the screw at the top of the control panel and then the
control panel will hinge forward.
E. OVEN ASSEMBLY
Before assembling and installing the oven, please check
to make sure that all necessary parts are present. In
addition to the oven itself, there will also be four legs,
four feet or four casters, the vent guard, (for double
sections: retaining clips & vent riser) and miscellaneous
hardware. Please check the interior of all oven sections
for the parts needed to assemble and install the oven(s).
single and double oven sections.
• The installation of casters requires the removal of
the adjustable feet from the legs. This is done by
placing the bit of a large screwdriver against the lip
of the foot and rapping the screwdriver to drive the
foot out of the leg. The caster is then inserted fully
into the opening where the foot came out and the
locking nut tightened to expand the compression
sleeve of the caster.
NOTE: The casters with locking brakes are best
mounted on the front side of the oven for easier access.
NOTE: If you plan to use casters, a xed restraint of the
proper length must be incorporated to secure the oven to
a non-movable surface to eliminate strain on the power
cord. If the oven is removed from its normal position,
the restraint must then be reattached when returned.
Double Sections
• Secure the short legs to the bottom of the lower
section as described in previous section.
• Casters are installed by the method described for
single section ovens in the previous section.
• Place the oven in the upright position and mount
the top oven and secure to lower oven as shown
on page 27.
Leg Attachment
• Once the oven has been removed from the carton,
lay it on its left side (the side without the controls).
• Hold the leg and align with the threaded hole in the
front corner of the bottom of the oven. Carefully
start the bolt in the corner (avoid cross threading).
• Align the other two leg plate holes in the leg with
those in the oven bottom and secure each leg using
the remaining two leg bolts. Repeat this process
for all legs.
• Raise the oven up on the legs.
• Add the two (2) storage shelves between the four
(4) legs and secure with the bolts provided.
• Level the oven by turning the adjustable feet in or
out as needed.
Caster Installation
• Casters are available as an option for both the
• Install ue guard (if required) as shown on page
27.
F. ADJUSTMENTS ASSOCIATED WITH
INSTALLATION
Each oven section and all its component parts have
been tested thoroughly and inspected before the oven
was shipped from the factory. However, it is sometimes
necessary to further test or adjust the oven once it has
been installed. Such adjustments are the responsibility
of the Dealer or Installer. These types of adjustments
are not considered defects, rather a normal and routine
part of the proper installation of the equipment.
These adjustments include but are not limited to:
• Adjustments and recalibration of the thermostat
• Adjustment to the doors.
• Leveling.
• Tightening of fasteners.
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Installation and Operation of 5/9 Electric Convection Oven
No installation should be
considered complete without proper inspection
and, if necessary, any adjustments by qualied
service or installation personnel.
OPERATION INSTRUCTIONS
The information in this section is intended for the use
of qualied operating personnel. Qualied Operating
Personnel are those individuals who have carefully
read the information contained in this manual, are
familiar with the function of the oven and/or have had
experience with operating the equipment described.
We recommend following these instructions to insure
optimum performance, long life and trouble-free service
from your oven.
The 5/9 Electric Convection Ovens
Convection cooking has been around from the 1960s. Its
advantages are well known. It differs from conventional
cooking by the movement of heated air within the
cooking cavity by means of a fan. This moving, heated
air helps to strip the cool air from around the product
being cooked, allowing the heat to penetrate more
rapidly. The results are that your product is cooked
quicker and at a lower temperature with the comparable
product quality found in conventional ovens.
Please take the time to carefully read the operating
instructions. They are important in the successful use
of your oven.
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Installation and Operation of 5/9 Electric Convection Oven
A. OVEN CONTROLS
"V" CONTROLLER
Electro-Mechanical
1. The Power Switch - Controls power to ON or Cool
Down Function.
2. The Indicator Light - When lit indicates burners
are operating. When the light goes out, the oven
has reached its cooking temperature.
3. The Cooking Thermostat - Controls the oven
temperature.
4. The Cooking Timer - Sounds an electric buzzer
on expiration of operator set time as a reminder
to remove product at end of cooking cycle.
NOTE: To set times of less than 25 minutes, turn timer
knob past 25 minutes and then back to the desired time.
5. The Fuse Holders - Contain circuit protecting
fuses.
6. The Fan Speed Switch (Optional) - Sets fan speed
to high or low.
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Installation and Operation of 5/9 Electric Convection Oven
“V” Controller Operating Instructions
Timer Resolution
The Timer displays time from 0 to 60 minutes, in one-
minute increments.
Temperature Scale
The Temperature Control displays the temperature in
°F. The temperature range is from 150°F - 500°F, in
25°F increments.
Cool Down
This feature enables the oven to be cooled rapidly by
allowing the fan to operate with the burners turned off.
To activate, turn the Power Switch to the COOL position
and open the oven door. When the door is opened
enough to disengage the door switch, the fan will turn
on. Closing the door will turn the fan off.
Fan Speed Switch
The fan speed can be set to high or low speed by
placing the FAN HI/LOW button to the desired setting.
Cooking
A cooking cycle can be initiated as follows:
• Turn the Power Switch to COOK position.
• Set the Cooking Temperature by turning the
TEMPERATURE dial to the desired temperature.
The OVEN READY indicator light will turn on.
• When the OVEN READY indicator light turns off,
place the product to be cooked in the oven.
• Set the cooking Time by turning the COOK TIMER
dial to the desired time.
NOTE: To set times of less than 25 minutes, turn timer
knob past 25 minutes and then back to the desired time.
During the Cook Cycle, the OVEN READY Indicator
light will cycle on and off with the heating elements.
• When the COOK TIMER reaches “zero”, the alarm
will sound.
• To cancel the alarm, turn the COOK TIMER dial
to the OFF position.
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Installation and Operation of 5/9 Electric Convection Oven
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7
“XX” CONTROLLER
Oven Controls – Solid State Digital
1. The Power Switch – Controls power to Cook or
Cool Down functions.
2. The Indicator Light – When lit indicates burners
or elements are operating. When the light goes out,
the oven has reached the desired temperature.
3. The Time Digital Display – Displays time remaining
in the chosen cycle.
4. The Time Adjustment Buttons – Sets/Adjusts
countdown timer for cook cycle.
5. The Temperature Adjustment Buttons – Sets/
Adjusts cooking temperature.
6. The Temperature Digital Display – Displays the
temperature inside the oven
7. The Pulse Fan Button – Enables/Disables the
Pulse Fan Cycle.
8. The Start/Stop Button – Starts/Stops the cooking
cycle.
9. The Hold Button – Enable/Disables the Hold
Function.
10. The Fan Speed Switch (Optional) – Sets fan speed
to high or low.
11. The Fuse Holders – Contains circuit Protecting
fuses.
“XX” Controller
Programming & Operating Instructions
11
Models with the XX controller enable the oven to
cook food at a specied temperature for a specied
time period, than enter an optional hold mode. The
hold mode holds food at a specied temperature for a
specied period of time.
When the power switch is in the ON position the oven
will be in one of two modes:
• Cook Mode: In this mode the oven operates at a
specied temperature and the fan runs continuously,
unless the cycle option is selected. In cycle mode the
fan runs for 30 seconds and is off for 30 seconds.
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Installation and Operation of 5/9 Electric Convection Oven
This cycle continues during the specied cook time.
• Hold Mode: In this mode the oven operates at a
specied hold temperature; however the fan only
runs when the burners are on. If the fan mode
switch is in the COOL position the fan will run
continuously in the Hold mode.
To Program Cook Mode do the following:
1. Turn the power switch ON. The power switch is
located at the top of the Control Panel.
2. Set the desired cook temperature (150° to 500°F).
Use the arrow keys located next to the temperature
display. Up raises the temperature, down lowers
the temperature.
3. Set the Fan Mode Switch to the Cook position.
In the Cook position the fan will not run when the
doors are open. If the Fan Mode Switch is set in the
COOL position the fan WILL run when the doors
are open.
4. If pulse fan cycling is desired press the FAN button.
In this mode the fan runs for 30 seconds and is
off for 30 seconds. The fan indicator light will blink
when the fan is in cycle mode. It stays on steady
when the fan is in continuous run mode.
5. Select the correct fan speed for the item being
cooked. The Fan Speed switch has two speeds,
HI, or LOW.
6. Set the desired cook time by using the up and down
arrows next to the cook time display. Up increases
time, down decreases time.
7. If the Hold Mode is going to be used for the
product being cooked, press the HOLD button.
The temperature display now displays the Hold
temperature. Use the up and down arrows to set
the desired holding temperature.
8. Wait until the temperature display stops ashing,
when it stops ashing the oven has reached the
set temperature. The oven also beeps once to alert
the user that it is ready.
9. Place product to be cooked into the oven
and press the START/STOP button. The time
display begins counting down the remaining
cook time. If the oven doors are opened during
the cook cycle, the timer will pause, the fan
will shut off and the burners will shut off. Cook
cycle will resume when the doors are closed.
For ovens equipped with an interior light, the light
may be turned on by pressing and holding the
LIGHTS button at the bottom of the Control Panel.
The cook time, oven temperature and fan cycle
mode can be changed during the cook cycle as
needed. To cancel a cook cycle, press the
START/STOP button.
10. If the HOLD mode is NOT enabled the oven begins
beeping and the display will ash “00” indicating
the cook cycle is complete. Press the START/
STOP button to silence the alarm and immediately
remove the product from the oven. If the oven
doors are shut the oven will maintain the set cook
temperature even though the timer has rune out. To
cool down the product, open the doors, with the Fan
Mode to COOL and change the FAN SPEED to HI.
If the HOLD mode IS enabled the oven will beep
three times when the cool time has completed. The
timer will begin an upward count, indicating how
long the product has been holding. The temperature
display now displays the holding temperature. The
oven will remain in HOLD mode until the START/
STOP button is pressed. Pressing the START/
STOP button returns the oven to the COOK mode.
11. When cooking is completed press the Power ON/
OFF button to turn the oven off.
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