TROUBLESHOOTING
8-11
Problem
Possible Reasons & Solutions
Buzzer
Inoperative
Reasons:
Bad buzzer.
Solutions:
Call authorized service center.
Inlet flow too
low
Reasons:
Pump diaphragm damaged or
has debris.
Flow path leaks.
Solutions:
Check flow path for leaks;
sensor module O-ring, tube
connectors, Teflon tube
compression fitting.
Replace pump or diaphragm.
“Lamp” message
during operation
Reasons:
Lamp drive circuit.
Lamp threshold set too high.
Weak or defective PID lamp,
defective.
Solutions:
Check and reset lamp threshold
Replace the UV lamp
Full scale
measurement in
humid
environment
Reasons:
Dirty or wet sensor.
Solutions:
Clean and dry sensor and lamp
housing. Adjust sensor fingers
to ensure not touching Teflon.
Use water trap filter.
Reading
abnormally
low
Reasons:
Incorrect calibration.
Low sensitivity to the specific
gas.
Weak or dirty lamp.
Air leakage.
Solutions:
Calibrate the monitor.
Replace sensor.
Clean or replace lamp.
Check air leakage.
