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FORM 31057 (5-98) PRINTED IN U.S.A.
TROUBLESHOOTING
PROBLEM
Power switch is on and oven
will not operate.
Burner is on but oven does
not start.
Speed control shows "OL".
Conveyor belt does not turn.
Conveyor belt jumps.
Burner does not ignite.
Cooking is not even.
Oven gives off gas odors.
Oven is operating,
temperature controller is on,
and the burner goes off.
Excessive vibrations of the
circulating motor.
POSSIBLE CAUSES
1. Gas combination valve is in
the OFF position.
1. Temperature controller
setting not properly
adjusted.
2. Problem with thermocouple.
1. Conveyor belt is stuck.
1. Problem with speed control.
2. Gear loose.
1. Chain too loose.
1. Gas combination valve is in
the OFF position.
2. Problem with centrifugal
switch or gas valve.
1. Improper adjustment of the
fingers.
1. Improper adjustment of the
burner flame.
1. Axial fan problem.
2. Fan circulating motor is
overloaded or overheated.
1. Blower cage is unbalanced.
ACTION
Turn the valve to ON.
Adjust temperature controller.
Contact your Vulcan servicer.
Check the belt.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
Adjust belt tension screws
evenly
(see Fig. 8).
Turn the valve to ON.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
Contact your Vulcan servicer.
Contact your Vulcan servicer.