Vulcan-Hart VC4GC, Service Manual

Page: 23 / 68

FULL SIZE GAS CONVECTION OVENS - SERVICE PROCEDURES AND ADJUSTMENTS
F24682 (Rev. B, October 2007) Page 23 of 68
VERIFICATION OF SPARK AT
IGNITOR
Shut off the gas before servicing
the unit.
1. Remove the bottom front cover as outlined
under COVERS AND PANELS in REMOVAL
AND REPLACEMENT OF PARTS.
2. Disconnect the high voltage IGNITION CABLE
from the spark ignitor.
Do not hold the wire with your
hands for this test. The manual gas valve must
be closed.
3. Clamp the ignition cable in a manner that will
position the end of the cable 3/16" from the
oven frame (bare metal surface).
NOTE: It is critical that the cable be held 3/16" away
from the surface of the oven frame or sparking may
not occur even though the sparking circuit is
functioning properly.
4. Plug the oven in and set the temperature control
to the maximum setting.
5. Turn the power switch ON.
6. Sparking should occur after a 4 second delay,
for a duration of 7 seconds then repeat twice
after a 15 second purge time. Arching from the
ignition cable to the oven frame should be
observed.
DOOR SWITCH ADJUSTMENT
1. Remove the top front cover as outlined under
COVERS AND PANELS.
2. Door operation:
A. Independent doors - The switch actuator
should be operated by the switch lever
when the right door is between 1" and 1
1/2" from being closed.
B. Simultaneous doors - The switch actuator
should be operated by the switch lever
when the right door is 1/2" from being
closed.
3. If adjustment is necessary, bend the switch
actuator to obtain the proper setting.
4. Install the top front cover.
5. Apply power to the oven and check for proper
operation.