Tuttnauer 2540 EHS, Technician Manual

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95
Corrections
14.4
If the display does not match the selections on the PT100 simulator then calibrate the temp. If unsuccessful
than
replace the ANL-T2
15.1
Unplug and replug in the connector making sure good contact is made
15.2
Replace the PT100 sensor
15.3
Calibrate the system. (see para 5)
15.4
Replace ANL-T2 board and calibrate the system.(see para 5)
16.1
Unplug and replug in the connector making sure good contact is made
16.2
Fix the connections
16.3
Replace the pressure sensor and calibrate (see para 5).
16.4
Replace the ANL-T2 and calibrate (see para 5).
Possible cause check-up and tests
14.4
Plug the PT100 simulator into the JP2 connector and try the various temperature selections.
15.1
Check that the connector of the sensor is properly plugged into JP2 on the ANL- T2 board.
15.2
Check the positioning of the PT100 (see sec 9.20) If the positioning is correct then the PT100 sensor is faulty.
15.3
The difference in the displayed temperature when the PT100 simulator is connected is similar, in magnitude and direction, to the difference in the displayed temperature when the PT100 sensor is connected.
15.4
System cannot be calibrated.
16.1
Check that the connector of the sensor is properly plugged into JP1 on the ANL- T2 board.
16.2
Check that the wires and connector are in good condition.
16.3
The pressure sensor is defective.
16.4
The pressure measuring circuit on ANL- T2 board is defective.
10. TROUBLESHOOTING
(cont.)
10.4
In Process Malfunction
(cont.)
Symptom
14. (cont) 15.
The displayed temperature is significantly different from the actual temperature.
16.
The displayed pressure of the chamber pressure permanently indicates a pressure over 50 psi.