Vulcan-Hart ML-044936, ML-044937, ML-044962, ML-044969 Troubleshooting, Problem, Probable Cause

TROUBLESHOOTING

Problem

Griddle will not heat evenly.

Product sticking to griddle.

Burner valves hard to turn.

Top burner will not light.

Probable Cause

•Unit not level.

•Wrong orifice.

•Flue obstructed.

•Gas-to-air ratio incorrect.

•Burner ports obstructed.

•Temperature too high.

•Griddle not reseasoned after cleaning.

•Excessive carbon buildup on griddle.

•Valve lubricant dissipated.

•Valve core/plug scored.

•Dirt/debris in valve.

•Valve stem or knob rubbing on front panel.

•Wrong orifice.

•Gas-to-air ratio incorrect.

•Incorrect gas pressure.

•Vent in pressure regulator blocked.

•Pilot burner positioned incorrectly.

•Burner ports obstructed.

•Obstruction in venturi.

•Make-up air/drafts directed toward burner.

•Water or grease in burner.

•Pilot flame too big or too small.

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