20
F. Cleaning of the Ovens
The stainless steel on your oven can be kept clean with a
good stainless steel cleaner, many of which are on the
market. The painted surfaces should be wiped clean
regularly with a MILD detergent. Moisten a cloth and wipe
down the oven while it is COLD. Wiping down an oven
while it is hot will cause streaking and otherwise
unsatisfactory results. Once the oven is clean it can be wiped
down with a light oil.
Porcelain oven interiors should be cleaned regularly using a
degreasing agent. For heavier deposits a commercial oven
cleaner such as Dow Oven Cleaner, Easy-Off, or Mr. Muscle
can be used. Care must be taken to prevent these alkaline-
type cleaners from coming in contact with any aluminized
steel surfaces in the oven, including the blower wheel.
The blower wheel, racks and rack supports can be removed
and soaked in a solution of ammonia and water.
Make certain that all parts are thoroughly rinsed before
returning to use.
MAINTENANCE INSTRUCTIONS
These maintenance instructions are for the use of qualified
service personnel only. Service by other than qualified
personnel may result in damage to the oven and/or injury to
the operator.
Qualified service personnel are those individuals, firms,
companies or corporations which either in person or through
an agent are engaged in and responsible for repair or
servicing of commercial food preparation equipment, who
are experienced in such work, familiar with all precautions
required, and have complied with all requirements of state
and local authorities having jurisdiction.
If you should require assistance in the selection of a qualified
service agency, please contact Duke Manufacturing Co.’s
Service Department at 800-735-3853.
A. Adjustments
Quite often malfunctions which are attributed to defects may
be repaired by adjusting certain parts rather than replacing
them.
B. Door Adjustment
All 6/13 Series Convection Ovens (except model option Q)
have doors which are inter-connected so they operate
simultaneously by means of a chain and turnbuckle
assembly. The doors are properly adjusted and inspected
before the oven leaves the factory. However, from time to
time it may become necessary to readjust the doors after
usage. If you find it necessary to adjust the doors for proper
operation, the chain and turnbuckle assembly is located
behind the panel which is over the doors. It is best to adjust
turnbuckles while the door is in an unlatched position.
• Loosen the jam nut on both turnbuckles.
• Make adjustments simultaneously to both
turnbuckles.
• Loosening or tightening the assembly will not allow
the doors to work properly. Ideally, you should
loosen one turnbuckle and tighten the other. Some
experimentation will indicate which direction you
will want to make your adjustments.
• Once the doors are operating properly, retighten the
jam nuts so the unit will stay in adjustment. Test the
door to make certain it is in adjustment.
• Replace cover.
C. Door Switch Adjustment
You may also wish to adjust the door switch. The door
switch is located behind the combustion compartment cover,
on the right side. The door switch is activated by a cam
which is mounted to the door’s hinge pin with a set screw.
• Open the doors fully.
• Remove the lower cover by removing the four
screws located inside the door opening.
• Position the doors so they are nearly closed but not
latched.
• To adjust the cam loosen the set screw and rotate
the cam until you hear the switch click.
• Tighten the set screw in the cam. Test the door to
make certain the switch will make contact with the
doors closed.
• Replace the combustion cover.
BLOWER WHEEL
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