Southbend SLEB/10CCH - Manual (Page 41)

E LECTRIC C ONVECTION O VENS
T
ROUBLESHOOTING
T
ROUBLESHOOTING
! WARNING
ADJUSTMENTS AND SERVICE WORK MAY BE PERFORMED ONLY BY A QUALIFIED
TECHNICIAN WHO IS EXPERIENCED IN, AND KNOWLEDGEABLE WITH, THE OPERATION OF
COMMERCIAL COOKING EQUIPMENT. HOWEVER, TO ASSURE YOUR CONFIDENCE,
CONTACT YOUR AUTHORIZED SERVICE AGENCY FOR RELIABLE SERVICE, DEPENDABLE
ADVICE OR OTHER ASSISTANCE, AND FOR GENUINE FACTORY PARTS.
NOTICE
Warranty will be void and the manufacturer is relieved of all liability if service work is performed by
other than a qualified technician, or if other than genuine Southbend replacement parts are installed.
When any difficulty arises it is always a good idea to check that the oven has been connected to the type of
voltage for which it was manufactured. The serial plate is located on the inside of the lower front panel. It
will list the type of voltage for which the unit was manufactured. In addition, a wiring diagram is attached to
the side of the fold down control panel, as well as reproduced in this manual (see page 43).
PERFORMANCE STANDARD
The typical time for the oven to heat from 75°F to 350°F is 7 to 8 minutes. The heating elements should
come on when the actual oven temperature drops to 10°F below the temperature setting.
TROUBLESHOOTING GUIDE
The left column of the following table lists symptoms that indicate a problem, while the center and right
columns list the possible causes and appropriate corrective action. Note that the recommendations of this
table assume that the wiring connections are good. When checking a component, always check the wiring
attached to the component as well.
Symptom Possible Cause Check or Replace
Temperature probe not working. Resistance across temperature probe leads at room temperature (70°F)
should be approximately 1096 ohms.
Temperature control not calling for heat. When heat is required, there should be continuity between terminals 6
and 7 on temperature control.
Oven will not hold
correct temperature.
TROUBLESHOOTING
Inadequate or improper ventilation. Check ventilation hood. Verify draw and make up air adjustment.
38. Out of calibration. Calibrate according to procedure described on page
Blower motor will not
come on. No incoming electric power. Check incoming power.
Loose wire connections. Check wire connections.
Bad contactors. Contactor pull in and supply power to motor. Verify contactor pulling in.
Motor bad. If power is being supplied but motor will not turn, replace motor.
Shut down switch. All power except for motor supply come through shut down switch.
Check for continuity.
O PERATOR ’ S M ANUAL 1181958 REV 2 P AGE 41