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MASTER JET CF SERIES ATMOSPHERIC GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1-32
1.10.1 Initial Troubleshooting, Millivolt Frying Systems (cont.)
PROBLEM PROBABLE CAUSES CORRECTIVE ACTION
A. Inadequate make-up air in cooking
area.
A. Adjust ventilation system to increase
make-up air.
B. Pilot flame directed away from first
orifice of burner.
B. Reposition pilot hood to direct flame
toward first burner orifice.
C. One or more burner orifices is
clogged.
C. Use a thin wire to clear obstruction
from orifices.
Burner ignition is
delayed.
D. Low pilot flame [less than 1” (25mm)],
low incoming gas pressure, or
inadequate incoming gas supply line.
D. Adjust pilot flame height to 1–1-½"
(25– 38.1mm), if required. If pilot
flame is adequate, check incoming
gas pressure and adjust to proper
pressure, if required. If proper
pressure cannot be achieved, check
incoming-gas supply line and increase
to proper size if required.
A. Clogged pilot orifice. A. Use a small wire to clear obstruction
from pilot orifice.
B. Pilot flame blowing away from pilot
generator (excessive draft in kitchen).
B. Eliminate draft in kitchen.
C. Pilot generator not inserted fully into
pilot burner.
C. Reinsert pilot generator into pilot
burner until flame surrounds tip.
D. Corroded connection where pilot
generator connects to gas valve.
D. Clean pilot generator connection at
gas valve.
Pilot won’t remain lit.
E. Low pilot flame, pilot generator, high-
limit thermostat contacts, or gas valve
pilot magnet is suspect.
E. Adjust pilot flame as instructed in
“Burner ignition is delayed”, if
required. If pilot flame is adequate,
inspect and replace pilot generator, if
required. Inspect and clean high-limit
contacts, if required. Replace gas
valve if pilot magnet is defective.
A. Flue obstructed. A. Remove obstruction from flue.
Flames rolling out of
fryer.
B. Inadequate make-up air in cooking
area.
B. Adjust ventilation system to increase
make-up air.
A. Loose, dirty or corroded high-limit
wires.
A. Clean/tighten high-limit wires on gas
valve.
Pilot ignites, but fails to
remain lit after gas
valve knob/button is
released.
B. Gas valve, pilot generator or high-limit
thermostat is suspect.
B. Inspect and replace any or all
defective components, if required.
A. Thermostat out of calibration. A. Check calibration of thermostat in
accordance with procedures in
Section 4.2 of this manual.
Setpoint temperature
cannot be attained.
B. Failed thermostat. B. Replace defective thermostat as
outlined in Section 1.8.2.