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18-09-2007
122770
06
If RTD sensor is OK, replace Main PCB and
then adjust and re-calibrate the unit.
Otherwise, replace RTD sensor and re-
calibrate the unit.
Error:
The well temperature can not become stable
Error message:
-
Likely cause:
Solution:
Sensor fault
Check the RTD sensor.
Disconnect the sensor from the PCB.
Check the leak resistance from the RTD
sensor. The resistance between one RTD
terminal and chassis terminal should be
more than 10 M
Ω
. For the ATC-650 this
should also be tested with a well
temperature above 600
°
C.
Summary of Contents for JOFRA ATC-125
Page 2: ...2 18 09 2007 122770 06 ...
Page 74: ...74 18 09 2007 122770 06 3 3 Exploded View ATC 140 A B 0 35 1 JRL 03 01 2005 A3 ...
Page 75: ...122770 06 18 09 2007 75 3 4 Exploded View ATC 155 A B ...
Page 76: ...76 18 09 2007 122770 06 3 5 Exploded View ATC 156 A B ...
Page 77: ...122770 06 18 09 2007 77 3 6 Exploded View ATC 157 A B ...
Page 79: ...122770 06 18 09 2007 79 3 8 Exploded View ATC 320 650 A B ...