Verification Of Spark At Ignitor - Vulcan-Hart VC4G Service Manual

VC4G & VC6G SERIES FULL SIZE CONVECTION OVENS - SERVICE PROCEDURES AND ADJUSTMENTS
4. Install hose barb adapter and attach manometer
tube.
5. Turn gas supply to the oven back on.
6. Plug the unit in and turn the power switch ON.
7. Set the temperature control to its highest setting
and allow burner to ignite.
NOTE: The burner must be lit during test.
NOTE: Accurate gas pressure readings can only be
made with the gas on and the burner lit.
PRESSURE READING (IN W.C.)
GAS
TYPE
MANIFOLD
Natural 5.0
Propane 10
NOTE: If the incoming line pressure to the valve is
less than the minimum stated, then the manifold
pressure will not be maintained.
NOTE: If gas valve cap is removed, or reversed for
gas type, ensure sealing washer is installed between
the gas valve and cap.
NATURAL GAS
• If the incoming pressure to the valve is between
6" WC and 14" for Natural gas and the manifold
pressure is not maintaining 5" WC, and the cap
(1, Fig. 60) is correctly positioned, replace the
valve.
PROPANE
• If the incoming pressure to the valve is between
11" WC and 14" for Propane gas and the manifold
pressure is not maintaining 10" WC, and the cap
(1, Fig. 61) is correctly positioned, replace the
valve.
Fig. 60
F24682 Rev. D (1016)
LINE
RECOMMEND MIN MAX
8.0 6 14
11.0 11 14
ITEM
1, Fig. 60
1, Fig. 61
VERIFICATION OF SPARK AT
SERVICING THE UNIT.
1. Remove the Bottom Front Cover.
2. Disconnect the high voltage "ignition cable" from
the spark ignitor.
Page 30 of 75
Fig. 61
DESCRIPTION
Cap position for natural gas
(stamped NAT).
Cap position for propane gas
(stamped LP).
IGNITOR
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
SHUT OFF THE GAS BEFORE
Fig. 62