Tuttnauer 2540 EHS, Technician Manual

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96
Corrections
17.1
Unplug and replug in the connector making sure good contact is made
17.2
Fix the connections
17.3
Replace the pressure sensor and calibrate (see para 5).
17.4
Replace the ANL-T2 and calibrate (see para 5).
18.1
Unplug and replug in the connector making sure good contact is made
18.2
Calibrate the system (see para 5)
18.3
Clean or replace the pressure sensor and calibrate (see para 5).
18.4
Replace the ANL-T2 and calibrate (see para 5).
19.1
Fix the connections.
19.2
Replace the electrode
19.3
Clean the electrode with alcohol and check that the quality of the water used in the jacket is as specified in the manual.
19.4
Replace ANL- T2 board.
Possible cause check-up and tests
17.1
Check that the connector of the sensor is properly plugged into JP1 on the ANL- T2 board.
17.2
Check that the wires and connector are in good condition.
17.3
The pressure sensor is defective.
17.4
The pressure measuring circuit on ANL- T2 board is defective.
18.1
Check that the connector of the sensor is properly plugged into JP1 on the ANL- T2 board.
18.2
The system is out of calibration
18.3
The pressure sensor is contaminated with dirt or is
defective.
18.4
The pressure measuring circuit on ANL- T2 board is defective.
19.1
Check if the wire connected to the electrode is shorted to ground.
19.2
Check if the electrode is shorted to ground.
19.3
The electrode is dirty.
19.4
If there is no short to ground then the ANL-T2 board is bad.
10. TROUBLESHOOTING
(cont.)
10.4
In Process Malfunction
(cont.)
Symptom
17.
The displayed pressure of the chamber permanently indicates a pressure less than 7.3 psi.
18.
The displayed pressure is significantly different from the actual pressure.
19.
The electrode senses water in the jacket, but the jacket is empty.