Adjust Gas Pressure To Kettle Burners - Graco ThermoLazer 258699 Repair Manual

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Adjust Gas Pressure to Kettle Burners

Adjust Gas Pressure to Kettle Burners
1. Shut off kettle gas safety valve (CC).
2. Turn kettle temperature control knob (AA) to 0
("OFF").
3. Remove kettle gas safety valve 1/8-27 NPT pipe
plug.
4. Screw 0 to 30 in. w.c. (0 to 7.47 cb) calibrated gas
pressure gauge or manometer into kettle gas safety
valve outlet.
5. Ignite kettle gas pilot burner.
6. Turn kettle gas safety knob (CC) to ON.
7. Turn kettle temperature control to 250° F (121° C).
8. Record gas pressure at kettle gas safety valve out-
let. Gas pressure should read 11 in. w.c. (2.74 cb).
9. Remove adjusting screw cap.
10. Turn adjusting screw (148) clockwise to increase
gas pressure (counterclockwise to decrease gas
pressure).
11. Install adjusting screw cap.
12. Turn kettle temperature control knob (AA) to 0
("OFF").
13. Shut off kettle gas safety valve (CC).
14. Remove gas pressure measuring device.
15. Add LP-gas pipe sealant to 1/8-27 NPT pipe plug
(156) and install in kettle gas safety valve.
10
CC
ti14518a
ti14521a
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148
156
313879B

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Thermolazer 257500

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