Duke Manufacturing Co.
2305 N. Broadway
•
St. Louis, Missouri
800-735-3853
•
314-231-1130
•
Fax 314-231-5074
www.dukemfg.com
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E. Gas Pressure Regulation & Adjustment
The gas pressure has been preset at the factory for the
type of gas specified 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.
• Remove the Combustion Compartment Cover
by removing the screws located in the bottom of
the door opening.
• Find the pressure tap located at the lower right
hand corner of the unit on the Right hand side of
a plumbing "Tee". The pressure tap is a 1/8" pipe
plug with a hex head.
• Remove the pressure tap plug and replace with
the fitting for a gas pressure meter, slack tube or
manometer.
• Attach your meter.
• The pressure regulator is an integral part of the
dual solenoid gas valve. Locate the adjustment
screw on the left hand side. (It has a slotted
aluminum cover cap.)
• Remove the cover cap.
• Open the Gas Shut Off Valve.
• Turn the Main power switch to the COOK
position.
• With the burner on, check your meter. The
manifold pressure should be 3.5" W.C. for
natural gas and 10" W.C. for propane.
• Check the rating plate to verify gas types and
pressures.
NOTE: It is important to check the gas pressure of
any unit while ALL the equipment on that gas line is
ON. This will tell you if you have a properly sized gas
delivery system or if there is a problem with gas
volume. If you experience a pressure drop that does
not recover when the other equipment is turned on,
you should look for problems in the size of the pipes
or
some
other type of restriction. Refer to the chart on
Maximum Capacity of Pipes located in Section II.D.
• Rotate screw inside, Clockwise to increase
pressure, Counter-clockwise to decrease pressure.
• When the proper pressure is attained, turn the
power switch to the OFF position and close Manual
Shut Off Valve.
• Remove your meter and Fitting. Replace pressure
tap plug. (You may need to add some pipe dope to
the plug to prevent a leak.)
• Turn the power switch to the ON position and
open the Manual Shut Off Valve.
• With a solution of soapy water, check for gas
leaks. Repair any leaks.
• Replace cover cap on gas valve.
• Replace Combustion Cover.
• Replace Control Panel.
F. Ventilation System
It is important that the ventilation system be inspected
and/or maintained by Qualified Personnel at least once
each year.
This inspection/maintenance should consist of, but not be
limited to:
• Inspection for blockages or build up which might
interfere with the venting of the oven.
• Repair of such blockages.
• Proper installation of the drafthood or flue guard.
• Inspection of the venting canopy, its drive motors
and belts, etc.
Proper preventive maintenance can reduce your chances
of costly repairs.
Gas Pressure Test
