Fig. 30
4.
Turn gas supply on.
5.
Connect power and turn power switch on.
6.
Set all the temperature controls on the griddle to
their highest setting and allow burners to light. All
burners must be lit during test and adjustment.
7.
Check manifold pressure reading and compare
to the value in the table below.
A.
If pressure is within the allowable tolerance,
then no adjustment is necessary. Turn off
the power switch and gas supply. Return
needle valve to the closed position then
disconnect manometer.
B.
If pressure is outside the allowable
tolerance, continue with procedure.
PRESSURE READINGS (IN W.C.)
GAS
TYPE
INCOMING LINE
MANIFOLD RECOMMEND
MAX
Natural
4.0
7.0 to 9.0
14.0
Propane
10.0
11.0 to 12.0
NOTE:
To correctly set the manifold pressure, the
incoming line pressure must be within the
recommended values for the gas type shown in the
table.
8.
To adjust, remove adjustment screw cap from the
gas valve being checked.
9.
Turn the adjusting screw to obtain the proper gas
pressure (clockwise = increase;
counterclockwise = decrease).
10. Once the correct pressure has been set, turn off
the power switch and gas supply. Return needle
valve to the closed position then disconnect
manometer.
11. Install the adjustment screw cap.
12. Check for proper operation.
BURNER GAS ORIFICE CHECK
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Shut off the gas before servicing the
unit.
If burner operation seems poor and other systems
have been checked, access the burner for the griddle
section being serviced and inspect the burner gas
orifice.
•
Radiant Burner
- The gas orifice and elbow
fitting is mounted to the orifice holder bracket at
the front of the burner venturi inlet.
Fig. 31
•
Infrared Burner
- The gas orifice is mounted to
the burner at the venturi inlet.
VCCG Series Heavy Duty Gas Griddle - SERVICE PROCEDURES AND ADJUSTMENTS
F45533 (1014)
Page 16 of 26
