Vulcan-Hart 72CS Range User Manual


 
If a VOM is not available, replace the
thermocouple with a new one as outlined under
STANDARD OVEN PILOT ASSEMBLY AND
THERMOCOUPLE or CONVECTION OVEN
PILOT ASSEMBLY AND THERMOCOUPLE or
and check operation GRIDDLE PILOT
ASSEMBLY AND THERMOCOUPLE.
1. Disconnect thermocouple from gas safety valve.
2. Select the test to perform.
3. Closed Circuit.
A. Install thermocouple adaptor at the
threaded connection on gas safety valve.
B. Install thermocouple to the adaptor. Tighten
mounting nut as described above in
NOTICE.
C. Light the pilot. Allow pilot to heat
thermocouple for one to two minutes.
D. Connect one meter lead to the adaptor test
point and the other meter lead to the tube.
Compare reading to the value listed in the
table below.
4. Open Circuit
A. Connect one meter lead to the tip of the
threaded end and the other meter lead to the
tube. Compare reading to the values listed
in the table below.
B. Light the pilot and continue to hold red
button down during this test. Allow pilot to
heat thermocouple for one to two minutes.
C. Compare reading to the value listed in the
table below.
THERMOCOUPLE MV READINGS
Closed Circuit Open Circuit
Range 8 to 25 MV 25 to 35 MV
5. If readings are less than the minimum stated
above, replace the thermocouple as outlined
under STANDARD OVEN PILOT ASSEMBLY
AND THERMOCOUPLE or CONVECTION
OVEN PILOT ASSEMBLY AND
THERMOCOUPLE or GRIDDLE PILOT
ASSEMBLY AND THERMOCOUPLE.
6. If pilot is still not functioning properly after
replacing thermocouple, then a problem exists in
the gas safety valve. Install a replacement GAS
SAFETY VALVE (STANDARD AND
CONVECTION OVENS) and check for proper
operation.
CHARBROILER PILOT
ADJUSTMENT
Pilot Adjustment
Turn pilot adjustment screws clockwise to
decrease the flame.
Turn pilot adjustment screws counter-clockwise
to increase the flame.
Pilot is in adjustment when it will stay on
continually and lights the burner without delayed
ignition.
Fig. 73
ENDURANCE / CHALLENGER MODULAR SERIES GAS RANGES - SERVICE PROCEDURES AND
ADJUSTMENTS
Page 33 of 38 F45471 Rev. A (0615)