Thermo Scientific TVA-1000B Instruction Manual - Geotech ...

Troubleshooting MI 611-185 – June 1996
Problem Possible Reason Solution/Action
PID lamp not operating
Bad PID lamp
Replace PID capsule.
PID noisy
Bad PID lamp
Replace PID capsule.
Unable to calibrate
PID
Slow response time
High background
readings
Dirty PID window
Erratic pump flow
Bad calibration
Pump not on
PID lamp not on
Span concentration not properly
set
Cal gases contaminated
Sample line/filter cups contaminated
PID window dirty or capsule
contaminated or faulty
Internal detector fault or contamination
Insufficient sample flow
Sampling non-volatile compounds
High ambient concentration
Zero drift/improper calibration
Sample line contamination
Detector capsule contamination
Clean PID window.
Clean/replace filter cups.
Clean/replace flame arrestor.
Ensure proper calibration.
Turn pump on.
Turn PID lamp on.
Input correct span gas
concentration at CAL menu.
Use clean cal gases and sampling equipment.
Clean/replace sample line.
Clean/replace filter cups.
Clean PID window.
Replace PID capsule.
Contact TEI authorized service center.
Clean/replace filter cups.
Clean/replace flame arrestor.
Clean/replace sample line.
Contact TEI Applications Laboratory.
N/A.
Ensure proper zero/span calibration.
Clean/replace sample line.
Clean/replace filter cups.
Clean/replace FID capsule.
Clean PID window.
Replace PID capsule.
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