Thermo Scientific Thermolyne NCAT F85930, Installation And Operation Manual

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13
Explanation of Error Codes
Furnace Error Codes
54 NCAT Asphalt Content Tester Thermo Scientific
Furnace Error Codes
All errors (unless explicitly noted) will cause the test procedure to stop. Furnace error

codes are displayed in red LED windows located on control panel.
E001 Chamber thermocouple circuit is open. Tip may be cracked at weld. The
chamber heat may open the crack by thermal expansion. Replace
thermocouple. Resistance of a normal thermocouple is </= 1 ohm.

Also, look for loose connection at terminal connection at rear of furnace.
Thermocouple leads are red (-) and yellow (+).
E002 Filter thermocouple open. Follow above procedure for filter
thermocouple.
E003 Chamber temperature limit of 675°C is exceeded. This error is disabled
while in the test program mode. Exceeding the 675°C limit can be
caused by:
1. Thermocouple has deteriorated. Remedy:

Check for 1 ohm resistance or less. Replace if indicated.
2. HMA sample size and oil BTU content cause the chamber
temperature to exceed limit setpoint. Remedy: Split sample or
reduce sample size.
E004 Filter temperature limit of 975°C is exceeded (See E003 explanation).
E005 Door interlock not functioning. This may be caused by:
1. Plunger rod off center of lock port due to door out of adjustment,
mechanical linkage jamming or plunger location shifted. Remedy:
Adjust as needed.
2. Check for a bend or ding in the outer case where the Door Lock
Linkage is attached. This can happen during shipping or handling.
Straighten case and adjust linkage.
3. Microswitch failure.
E007 Analog to Digital Converter is not functioning properly. This may be
caused by a component failure or faulty cable connection.
E008 The DTR signal from the balance is indicating the balance is either not
ready or not connected.
E009 Setpoint is out of range. This is a temporary error to alert you that you
have crossed the allowable boundary for the function you are setting.
The furnace will beep for 3 seconds while displaying the error, and then
return to normal operation. The setpoint will revert to its previous value.
E010 Chamber thermocouple leads reversed. Thermocouple is type “K”.
Polarity is coded as red (-) and yellow (+). Polarity must be consistent
throughout the circuit.