HF scientific MicroTUV Online UV %Transmission Sensor/Sampler (large) - Manual (Page 19)

TUV (04/03) Page 11
REV. 0.6
7.2 TROUBLESHOOTING GUIDE
T he following table will supply fundamental troubleshooting information. The guide assumes that the controls
and functions of the instrument are used correctly. The intention of the guide is to eliminate common faults,
not to troubleshot down to component level.
Sensor/Sampler:
SYMPTOM SOLUTION
Pump won't prime
1. Ensure that the Pump Switch is ON.
2. There is a sieve located at the suction end of the source line
that functions as a filter for larger particles. Also, there is a
T-strainer which functions as a sacrificial element in that it will
clog before any of the internal path of the sensor/pump
stream. These should be checked as the most likely place of
blockage and either cleaned or replaced.
3. The system should be periodically cleaned (site-sensitive).
4. The flow switch may be clogged.
1. Clean T-strainer.
2. Check source line for blockage.
3. Check pump tubing for wear. Replace tubing if needed.
4. Check all tubing for kinks.
5. Check pump head for wear. Replace pump head if needed.
6. Check for blockage and check all tubing connections.
7. Check flow switch for blockage.
Flow Stopped
Pump shuts down
Readings fluctuate
5-10 units
Error Codes/Alarms
Observe flow LED during operation, could be air leakage
or plugged strainers.
There may be moisture present in the desiccant tray or
cleaning solution in the standpipe.
Refer to Analyzer Manual.