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Troubleshooting
PROBLEM
Inaccurate temperatures.
Repeated element burnout.
"OR" displayed.
Slow heatup.
Building or laboratory
main fuses blow or
circuit breakers trip.
Other errors displayed.
34
POSSIBLE CAUSES
Contaminated thermocouple.
Continuous operation
below 800°C.
Heating element contamination.
Open thermocouple.
Operating 240V furnace
on 208V supply.
Furnace chamber overloaded.
Fuses or breakers not
properly rated to
furnace electrical
requirements.
CORRECTIVE ACTION
Replace thermocouple.
Do not continuously
operate below 800°C.
Contact Barnstead International.
Replace thermocouple.
Increase voltage to
proper level.
Lighten load.
Install service line of sufficient
size to match furnace
electrical requirements. Contact
Barnstead International for
assistance.
Contact Barnstead International.
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