GAS PRESSURE ADJUSTMENT
Disconnect the electrical power to the machine and follow lockout / tagout procedures.
Accurate gas pressure adjustments can only be made with the gas on and the burner lit. If the incoming line pressure to the valve is less than the minimum stated, then the manifold pressure cannot be set correctly.
1.Turn gas supply off at manual shutoff valve.
2.Remove the right side panel as outlined under Covers and Panels in Removal and Replacement of Parts.
3.Remove the plug from the manifold pressure port.
4.Install hose barb adapter and attach manometer tube.
5.Remove adjustment screw cap from the gas valve and turn gas supply to the oven back on.
The following steps require power to be applied to the unit during test. Use extreme caution at all times.
6.Plug the unit in and turn the power switch ON.
7.Set the temperature controller to its highest setting and allow burner to ignite. The burner must be lit during test and adjustment.
8.Turn the set screw to obtain the proper gas pressure (clockwise = pressure increase; counterclockwise = pressure decrease).
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| PRESSURE READINGS (IN W.C.) |
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GAS |
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| LINE |
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TYPE |
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MANIFOLD |
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| RECOMMENDED |
| MIN |
| MAX | ||
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Natural | 3.5 |
| 7.0 |
| 5.0 |
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| 14 |
Propane | 10 |
| 11.0 |
| 11.0 |
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– 25 –
