Middleby Marshall PS629G Series, Owner'S Operating & Installation Manual

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SECTION 5
TROUBLESHOOTING
47
SECTION 5
TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION
PRODUCTS ARE
OVERCOOKED OR
UNDERCOOKED
Incorrect settings or
methods.
Check for correct setting of conveyor speed control.
Set the conveyor speed control at correct setting.
Check for correct setting on temperature controller.
Turn temperature control to correct setting.
Verify the food preparation process.
If products still cook incorrectly, call your Middleby
Marshall Service Agency.
OVEN DOES NOT HEAT Incorrect switch position. Check to see if both BLOWER switch and HEAT
switch are in the “ON” or “I” position.
If oven does not heat, call your Middleby Marshall
Service Agency
BLOWER MOTOR IS
RUNNING, YET LITTLE OR
NO AIR BLOWS FROM AIR
FINGERS
Air fingers reassembled
incorrectly after
cleaning.
Assemble air fingers correctly after cleaning. Refer
to Section 4 procedure, or call your Middleby
Marshall Service Agency.
OVEN BLOWER AND
CONVEYOR OPERATE, YET
THE OVEN IS NOT HEATING
Oven needs resetting. Reset the temperature controller to a new setting
(above 200°F), after turning the BLOWER switch to
off for 30 seconds. Start the oven again.
If the oven still does not heat, call your Middleby
Marshall Service Agency.
CONVEYOR WILL NOT HOLD
PROPER SPEED OR WILL
NOT RUN AT ALL
Conveyor is obstructed
or loose.
Check whether the conveyor is jammed on
something in oven.
Check for proper tension of conveyor drive chain
and conveyor belt. Refer to Section 4 for correct
procedure.
Check that the conveyor drive sprocket is tight.
If conveyor still does not run correctly, contact your
Middleby Marshall Service Agency.
OVEN DOES NOT TURN ON
WHEN ITS SWITCHES ARE
TURNED ON
Oven is not receiving
power.
Check that all electric supply switches are set to the
“ON” or “I” position. Then, start the oven.
If oven still will not start, contact your Middleby
Marshall Service Agency.
OVER TEMPERATURE LED IS
LIT, FOOD PRODUCT IS
UNDERCOOKED
The oven temperature
exceeded 650°F
(343°C), and the burner
was automatically shut
down.
Follow the procedures under Daily Shutdown
Procedures in Section 3 to shut down the oven.
Contact your Middleby Marshall Authorized Service
Agent to determine and correct the cause of the
condition to prevent damage to the oven.