Olis 72/02FRG - Page 36

23.3.2005 Rev. 1.0
Troubleshooting
32
TROUBLE POSSIBLE CAUSES WHAT TO DO
FOR THE USER FOR THE MAINTENANCE
TECHNICIAN
Pilot flame stays lit,
but main burner
won’t light:
pressure drop in gas
pipe;
contact the gas utility company;
burner nozzle is
clogged;
clean the burner nozzle or replace it
(see chapter "Replacing main burn-
er nozzles" in section "Adjustment
instructions");
gas valve faulty; replace the gas valve (see chapter
"Replacing the gas valve" in sec-
tion "Service").
The safety thermostat
trips:
oil in the tank has
dropped below the min-
imum level;
top the oil up to the rated level;
operating thermostat
damaged or setting
wrong;
replace the gas valve (see chapter
"Replacing the gas valve" in sec-
tion "Service").
Oil temperature can’t
be adjusted:
operating thermostat
damaged or setting
wrong;
replace the gas valve (see chapter
"Replacing the gas valve" in sec-
tion "Service").
Too much foam
builds up while fry-
ing:
product to be fried has
high moisture content;
dry it (see chapter "Frying" in
section "Operating instruc-
tions").
old oil (overused); change it (see chapter "Frying"
in section "Operating instruc-
tions");
product quantity ex-
ceeds the recommended
load.