PAL-AT Operating Manual
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3.2 Types of Alarm Conditions .............................................................................................. 36
3.2.1 Fault ................................................................................................................... 36
3.2.2 Break Alarm ....................................................................................................... 36
3.2.3 Short Alarm ........................................................................................................ 36
3.2.4 Drying or Probe Reset Alarm ............................................................................. 36
3.2.5 Leak or Probe Activated Alarm .......................................................................... 36
3.3 Leak Analysis .................................................................................................................. 37
3.3.1 Accessible Applications - Raised Floor systems ................................................ 37
3.3.2 Inaccessible Applications – Contained Piping Systems ..................................... 37
3.3.3 Direct Buried Applications .................................................................................. 37
3.3.4 Repetitive Cycling Alarms .................................................................................. 38
4 Tests and Maintenance ........................................................................... 39
4.1 Select Test Mode ............................................................................................................ 39
4.2 Alarm Test ...................................................................................................................... 39
4.3 Cable Test ...................................................................................................................... 39
4.4 Probe Test ...................................................................................................................... 39
4.5 Battery ............................................................................................................................ 39
4.6 Auxiliary Header.............................................................................................................. 40
4.7 USB Port ......................................................................................................................... 41
4.7.1 Firmware Upgrade ............................................................................................. 41
4.7.2 Data Logger ....................................................................................................... 41
5 Troubleshooting ...................................................................................... 43
5.1 Initial Power-Up Checks .................................................................................................. 43
5.2 System Board ................................................................................................................. 43
5.3 Diagnostic LEDs ............................................................................................................. 43
5.3.1 Port 1 and 2 RS-232/485 ................................................................................... 43
5.3.2 Relays ................................................................................................................ 43
5.3.3 DC Voltages ....................................................................................................... 44
5.3.4 Cable Status ...................................................................................................... 44
5.3.5 24 VDC Reversed Polarity ................................................................................. 44
5.4 Zener Barrier Panel ......................................................................................................... 45
5.4.1 Zener Barrier Assembly Tests ............................................................................ 45
5.4.2 ZBA External Fuse ............................................................................................. 46
5.5 Cable Connector Tests ................................................................................................... 46
5.6 Troubleshooting Guide .................................................................................................... 47
5.7 Restrictions & Limitations ................................................................................................ 48
5.7.1 Sensor Cables ................................................................................................... 48
5.7.2 Probes ................................................................................................................ 49
5.8 PAL-AT Setup Record .................................................................................................... 50
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