94
Corrections
13.1 Unplug and replug in the connector
making sure good contact is made
13.2 Fix the connections
13.3 If the resistance does not correlate with
the temperature, replace the temperature
sensor.
13.4 If the display does not match the
selections on the PT100 simulator then
calibrate the temp. If unsuccessful then
replace the ANL-T2
14.1 Unplug and replug in the connector
making sure good contact is made
14.2 Fix the connections
14.3 If the resistance does not correlate with
the temperature, replace the temperature
sensor.
Possible cause check-up and tests
13.1 Check that the connector of the sensor is
properly plugged into JP2 on the ANL-
T2 board.
13.2 Check that the wires and connector are in
good condition.
13.3 Disconnect the PT100 from the connector
and check its resistance. At 32ºF the
resistance across the two wires of the
sensor should read 100 Ω. The resistance
at higher temperature can be calculated
by adding 0.2 ohms for each degree F.
13.4 Plug the PT100 simulator into the JP2
connector and try the various temperature
selections.
14.1 Check that the connector of the sensor is
properly plugged into JP2 on the ANL-
T2 board.
14.2 Check that the wires and connector are in
good condition.
14.3 Disconnect the PT100 from the connector
and check its resistance. At 32ºF the
resistance across the two wires of the
sensor should read 100 ohms. The
resistance at higher temperature can be
calculated by adding 0.2 ohms for each
degree F.
10. TROUBLESHOOTING (cont.)
10.4 In Process Malfunction (cont.)
Symptom
13. The displayed temperature
permanently indicates a
temperature higher than
284ºF or T1CUT is
displayed.
14. The displayed temperature
permanently indicates a
temperature less than 54ºF,
although chamber
temperature is high.
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