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5.2.
Calibration
Depending on using frequency and application temperature, you may require a calibration
of the thermocouple from time to time or even a change of the thermocouple. For K type
thermocouples we advice a change for every year. For S or R type thermocouples the useful
life can be much longer for temperatures less than 1500°C. At applications close to 1600°C,
a change of thermocouple every year is also advised.
5.3.
After Sales Services
Labnics manufactures robust furnaces so that after sales are kept at minimum. Even so we
have engineers that will provide you any service you require. Most of the time problems
encountered can quite sufficiently be solved by technical assistance through internet or by
phone. Please always inform of the serial number for better analysis of the problem. For an
easier problem solving please note following ''fault analysis'' questions.
6.
Frequently asked questions / Fault Analysis
1.
Furnace controller does not display when the I/0 switch turned on?
1.1.
Check the Mains supply. Check the voltage present .May be less than 220V
1.2.
Check the fuses on your mains supply.
1.3.
Check the glass fuse at side of furnace; it may be broken during transport.
1.4.
Check the power supply of temperature controller
1.5.
Check the main fuses, after opening the back panel.
2.
Furnace does not heat up when the "heat" I/0 switches turned on? The Heat lamp is not
operating?
2.1.
PV value is higher than SP value. Increase the Set temperature.
2.2.
Heating element may have failed.
2.3.
Thermocouple may have failed (Controller display must be showing a warning) or
the connection cables may be disconnected. See warnings below
2.4.
SSR may have failed and needs replacement.
2.5.
The lid switch may have failed.
Model
T/C failure sign
Honeywell DC1010
i n I E
Honeywell UDC2500
IN1FL
PC442 Series
Err.I
3.
Display shows a higher temperature than the limits of furnace?
3.1.
There may be an SSR failure, ON.
3.2.
Configuration of the controller may have been changed by someone.