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HEATING ELEMENT TEST
Certain procedures in
this section require electrical test or
measurements while power is applied
to the machine. Exercise extreme
caution at all times and follow Arc Flash
procedures. If test points are not easily
accessible, disconnect power and
follow Lockout/Tagout procedures,
attach test equipment and reapply
power to test.
1. Turn the power switch ON and set the oven
temperature control to the highest setting.
2. Measure the voltage at the heating element
terminals and verify it against the data plate
voltage.
A. If voltage is incorrect, find the source of the
problem.
B. If voltage is correct, check current draw
(amps) through the heating element lead
wires.
NOTE: This method is preferred over a resistance
check when a clamp on type amp meter is available.
1) If current draw is correct then heating
element is functioning properly. See
Heating Element Values table.
2) If current draw is not correct, turn the
power switch OFF and disconnect the
electrical supply to the oven.
a. Replace heating element, then
proceed to step 3.
C. If unable to check current draw, a resistance
check may indicate a malfunctioning
element.
1) Turn the power switch OFF and
disconnect the electrical supply to the
oven.
2) Remove the lead wires from the
heating element and check resistance
(ohms). See Heating Elements
Values table.
3. Check for proper operation.
HEATING ELEMENT VALUES
VOLT.
KW PER
ELEMENT
AMPS PER
ELEMENT
OHMS PER
ELEMENT
1 PH 3 PH
208 4 19 19 10
240 4 16.5 16.5 14.5
480 4 8 8 57
NOTES:
1. Values in the table are nominal.
Tolerance is +5/-10%.
2. Voltage values are @ 60HZ.
3. Resistance values (ohms) are @
room temperature.
BLOWER ADJUSTMENT
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Remove the blower motor and mounting
assembly by following steps 1 through 7 as
outlined under
BLOWER AND MOTOR under
Removal and Replacement of Parts.
2. Loosen the motor mounting bolts.
3. Adjust the motor position until the blower is
parallel to and 1/4 inch away from the motor
mounting plate. Check for squareness of the
blower to the motor mounting plate at the top,
bottom, left and right of the blower.
A. If the blower is square then tighten motor
mounting bolts and proceed to step 4.
B. If the blower is not square continue
adjusting until proper spacing is achieved
then tighten motor mounting bolts.
NOTE: If necessary, place shims between motor and
frame.
VC3ED FULL SIZE ELECTRIC CONVECTION OVEN - SERVICE PROCEDURES AND ADJUSTMENTS
Page 17 of 31 F45534 (0415)