Troubleshooting Guide for 5000 Analyzer
Possible Cause Isolation Procedure Corrective Action
Field Unit LEDs do not light
Blown fuse F1 Replace F1.
Blown thermal cutoff S2 Replace S2
Faulty power supply Check for 24 VDC between red If voltage is not present and CB1 is
Fault connections and black test points TP2 (+) and TP1. closed, check power supply of T1 and
diodes CR4 and CR5.
Controller Alarms not operating
Incorrect operating parameters Check and secure all connectors between
boards. Check that all relays are secure.
Verify software parameters.
Faulty relay Perform Test Alarm Relays routine If relay works, place analyzer on-line. If
relay does not function, replace the CPU
board.
Faulty CPU board Replace CPU board.
Display Reads Low in calibrate or operate modes
Incorrect operating parameters Check all values against Calibration
Data Sheet.
Incorrect back pressure Check, and if necessary, reset back
pressure.
Incorrect sample flow rate Check flow rate with Bubble-O-Meter Reset flow, if necessary.
Incorrect operating temperatures Check and, if necessary, set oven and
moisture generator operating temperatures.
Contaminated sample cell crystal Read cell frequency If cell frequency input is >3500 Hz, replace
the cell.
Contaminated dryer Substitute with known good Replace or re-activate dryer.
dryer.
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