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7. TROUBLESHOOTING
Only a Factory Authorized Service Representative or a local service company specializing in hotel
and restaurant cooking appliances may carry out these troubleshooting procedures. The problems
and possible solutions given below cover those most commonly encountered.
FACTORY APPROVAL MUST BE OBTAINED PRIOR TO ANY WARRANTY WORK BEING
DONE OR DEAN INDUSTRIES CANNOT BE HELD RESPONSIBLE.
PROBLEM
CORRECTIVE ACTION
Pilot will not ignite; no
evidence of gas at pilot
burner.
1.
Ensure the combination gas valve is open and
that gas is available at the control.
2.
Remove pilot gas supply line and check for
dirt. Blow out with compressed air if
necessary, then reinstall.
3.
Check pilot burner orifice for dirt.
Pilot burner ignites but will not
remain lit when gas knob is
released.
1.
Check that the lead from the thermocouple is
tightly screwed into the pilotstat power
bushing on the gas control.
2.
Remove end of thermocouple lead from
pilotstat power unit bushing and clean with
fine sandpaper. Also check that bushing is
clean.
3.
Thermocouple possibly defective; replace.
4.
Pilot flame may be either too high or too low.
Adjust flame by turning pilot flow adjustment.
5.
Pilot flame of proper size but unstable. Flame
wavers and does not envelop the
thermocouple completely at all times. Check
for drafts, which might be caused by air
conditioning equipment or make-up air
apparatus. Turn air units off and re-check the
pilot.
Pilot burner ignites properly
and burns properly, but goes
out when the exhaust blower
comes on.
1.
Pilot flame may be adjusted too low, even
though it appears to be satisfactory. Remove
pilot adjustment cover screw. Adjust the pilot
flame to extend approximately 1/2" above the
top of the pilot burner. Replace cover screw.
2.
Pilot flame may be adjusted too high and is on
the verge of blowing out. Remove pilot
adjustment cover screw. Adjust the pilot
flame to extend approximately 1/2" above the
top of the pilot burner. Replace cover screw.
3.
With the exhaust blower in operation, the
extra air causes the pilot to blow out. Adjust
pilot flame lower.
