Southbend SL-Series - Manual (Page 34)

E LECTRIC C ONVECTION O VENS
OPERATOR’S MANUAL 1181958 REV 5 (4/14) PAGE 34 OF 47
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 38).
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.
T ROUBLESHOOTING
Symptom Possible Cause Check or Replace
Oven will not hold cor-
rect temperature.
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.
Inadequate or improper ventilation. Check ventilation hood. Verify draw and make up air adjustment.
Out of calibration. Calibrate according to procedure described on page 31.
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.