Max Machinery 121 INDICATOR - Manual (Page 63)

121-000-350 © 2001 Max Machinery, Inc. Pg 63
13. Diagnosis and Troubleshooting
13.1 Response of Model 121 on Error or Alarm:
Error and warning indications which occur during operation are indicated in the RUN mode alternately with the
measured values. The Model 121 Flow Computer has three types of error:
Some alarms are self clearing. Other alarms require the user to acknowledge and clear the alarm. Press the
ENTER button to acknowledged and clear alarms. Alarms may reassert themselves if the alarm condition is still
present.
NOTE: A historical error alarm log is available in the "Test Mode".
The following descriptions suggest possible causes and corrective actions for each alarm message.
TYPE OF ERROR DESCRIPTION
Sensor/Process Alarms
Errors detected due to sensor
failure or process alarm conditions
Self Test Errors Errors detected during self test.
System Alarms
Errors detected due to system
failure