Middleby Marshall PS528G Oven User Manual


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26
SECTION 3
OPERATION
V. QUICK REFERENCE: TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION
The oven temperature
exceeded 650°F (343°C),
and the burner was
automatically shut down.
• FollowtheproceduresunderDaily Shutdown Procedures in this
section 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.
IF THESE STEPS FAIL TO RESOLVE THE PROBLEM, CONTACT YOUR LOCAL MIDDLEBY MARSHALL
AUTHORIZED SERVICE AGENT. A SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVEN.
light is lit, food product is
undercooked
Oven will not
turn on at all
appears in display,
oven is not heating
Oven will not heat
Oven is operating, but little
or no air is blowing from air
ngers
Electrical power may not
be reaching the oven, or
the controls may be set
incorrectly.
The oven did not reach
200°F (93°C) within 15
minutes of startup, and the
oven has stopped heating.
Controls may be set
incorrectly.
Airngersmayhavebeen
reassembled incorrectly
after cleaning.
• Checkthatthecircuitbreaker/fuseddisconnectisturnedon.
• Check that the "BLOWER" ( ) Switch is in the “ON” ("I")
position.
• Turnthe"HEAT"( ), "BLOWER" ( ), and "CONVEYOR"
( )switches to the "OFF" ("O") position.
• Wait for AT LEAST FIVE MINUTES before restarting the
oven.
• RepeattheDailyStartupprocedure.
• CheckthattheSetPointiscorrectlyset.
• Checkthatboththe"BLOWER"( ) and "HEAT" ( ) Switches
are in the “ON” ("I") position.
• Iftheovenstillwillnotheat,turnthe"HEAT"( ), "BLOWER"
( ), and "CONVEYOR" ( )switches to the "OFF" ("O")
position.
• WaitforATLEASTFIVEMINUTESbeforerestartingtheoven.
• RepeattheDailyStartupprocedure.CheckthattheSetPoint
isabove200°F(93°C).
• Turntheoventothe“OFF”or“O”position,andallowittocool.
Disconnect electrical power to the oven.
• RefertoSection4,Maintenance, for instructions on reassembling
theairngers.
• Turntheoventothe“OFF”or“O”position,andallowittocool.
Disconnect electrical power to the oven.
• Checkiftheconveyorisblockedbyanobjectinsidetheoven.
• RefertoSection4,Maintenance, for instructions on checking
the conveyor and drive chain tension.
• Check that the set temperature and bake time settings are
correct.
Conveyor moves with a
jerky motion, or will not
move at all
Food products are over-
cooked or undercooked.
Conveyor may be jammed
on an object in the oven, or
conveyor belt or drive chain
tension may be incorrect.
Controls may be set incor-
rectly.
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