PAC R6000S Operation Manual page 72

R6000S Operation Manual: Rev. G
Symptom
Low or Poor Response to
Sample or Standard
Page 70 of 92
Probable Cause
UV Lamp weak or defective
Back pressure has changed
Decreased High-Voltage
Light Leak on Sulfur
Fluorescent Chamber
Decreased or increased gas
flows
Contaminated Fluorescent
Chamber or sample system
Contaminated or defective
membrane dryer
Change in Detector Gain
Defective PMT
Leak in Flow System
High-Voltage is unstable
Back pressure regulator is not
controlling properly
Moisture is collected in the
detector or in flow system
tubing
Corrective Action
Replace UV Lamp.
Reset back pressure as
necessary.
Readjust HV out or Replace
HV PCB or cable.
Check for light leakage and
make repairs as needed.
Check gas flows on
rotometers and adjust as
necessary.
Clean or replace Fluorescent
Chamber or sample system
tubes as necessary.
Replace Membrane Dryer.
Reset Detector gain setting.
Replace PMT.
Use Gas Leak Check
procedure to check for leaks.
Repair leaks as needed.
Use High-Voltage Adjustment
procedure to check voltage
setting and monitor for
stability. Replace high-voltage
board if required.
Monitor back pressure gauge
for stability. Replace back
pressure regulator if needed.
Sample zero or other dry gas
overnight. Proper response
will return after the water is
removed.
PAC L.P., All Rights Reserved, 2015