Door Switch Adjustment; Blower Adjustment - Vulcan-Hart VC4G Service Manual

VC4G & VC6G SERIES FULL SIZE CONVECTION OVENS - SERVICE PROCEDURES AND ADJUSTMENTS
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.
Fig. 63
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

electrical power to the machine and
follow lockout / tagout procedures.
1. Remove the Top Front Cover.
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 ½" from
being closed.
B. Simultaneous doors - The switch actuator
should be operated by the switch lever when
the right door is ½" from being closed.
3. If adjustment is necessary, bend the switch
actuator to obtain the proper setting.
Disconnect the
Page 31 of 75
Fig. 64
4. Install the top front cover
5. Apply power to the oven and check for proper
operation.

BLOWER ADJUSTMENT

electrical power to the machine and
follow lockout / tagout procedures.
SHUT OFF THE GAS BEFORE
SERVICING THE UNIT.
1. Remove the blower motor and mounting
assembly by following steps 1 through 8 as
outlined under BLOWER AND MOTOR.
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.
Disconnect the
F24682 Rev. D (1016)