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WARNING: All gas joints disturbed during servicing must be checked for leaks. Do
not use an open flame. Use a hazardous gas tester or a soap and water solution
(Bubbles indicate a gas leak). Failure to comply can cause property damage, injury or
death.
7. Perform either:
a. If pressure is correct, no adjustment is necessary. Remove the manometer and
replace the manifold cover.
b. If pressure is NOT correct, perform the GAS PRESSURE ADJUSTMENT
procedure.
Gas Pressure Regulator Adjustment
WARNING: Always perform the Electrical Lockout/Tagout procedure before removing
any sheet metal panels or attempting to service this equipment. Failure to comply with
this procedure can cause property damage, injury or death.
NOTE: Before adjusting the regulator, check incoming gas line pressure.
1. Perform the GAS PRESSURE CHECK procedure.
2. The manometer is already connected.
3. Remove the regulator closing nut.
Figure 31: Gas Pressure Regulator Adjustment
4. Insert a flat-edge screwdriver through the top of the regulator. Turn the adjusting screw
clockwise to increase pressure and counterclockwise to decrease pressure.
5. While watching the manometer, turn the adjusting screw for proper regulator outlet
pressure, typically 5.0" W.C. for natural gas and 11.0" W.C. for propane.
6. Perform the following to check for insufficient gas volume:
a. Fire up one burner and take a reading, then fire up all the burners on the range
and take a reading.
b. Fire up all the gas appliances on that supply line and take a reading.
NOTE: At no time should the pressure drop more than 1/2" W.C.
c. If pressure drop is greater than 1/2" W.C., go to the next step.
d. Turn off all the gas valves. Adjust the regulator to no more than 1/2" W.C. above
specifications, which would be 5.5" W.C. for natural gas or 11.5" W.C. for