Vulcan-Hart SG4D service manual Verification of Spark AT Ignitor, Door Switch Adjustment

Models: SG4D

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VERIFICATION OF SPARK AT IGNITOR

Disconnect the electrical power to the machine and follow lockout / tagout procedures.

Shut off the gas before servicing the oven.

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 igniter.

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). 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.

The following steps require power to be applied to the unit during the test. Use extreme caution at all times.

4.Plug the oven in and set the temperature controller to the maximum setting.

5.Turn the power switch ON.

6.Sparking should occur after a 4 second delay and continue for 7 seconds. The cycle will repeat twice after a 15 second purge time. Arcing from the ignition cable to the oven frame should be observed.

DOOR SWITCH ADJUSTMENT

Disconnect the electrical power to the machine and follow lockout / tagout procedures.

1.Remove the top front cover as outlined under Covers and panels in Removal and Replacement of Parts.

2.Door operation:

A. The switch actuator is engaged by the switch lever when the right door is between 1" and 1 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.

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Page 26
Image 26
Vulcan-Hart SG4D service manual Verification of Spark AT Ignitor, Door Switch Adjustment