PAC R6000S Operation Manual page 74

R6000S Operation Manual: Rev. G
Symptom
Baseline Drift, Continued
Baseline High-Frequency
Noise
Baseline Low-Frequency
Noise
Baseline Noise-Cyclic
Low Response
Page 72 of 92
Probable Cause
UV Lamp is Unstable
High-voltage is unstable
Light Leak
PCB contacts dirty
Defective PMT
Defective Pre-amp PCB
Defective Amplifier PCB
Unstable AC power source
Unstable gas regulator
High-voltage power supply is
unstable
Defective PMT tube
Light leakage
Unstable AC power source
Unstable gas regulator
Defective PMT
Light leakage
Gas leak
Change in gas flow
Incomplete sample
combustion
Faulty Membrane Dryer
Corrective Action
Replace UV Lamp.
Monitor high-voltage for
stability. Replace high-voltage
board if necessary.
Use Light Leak Check
procedure to check. Correct if
necessary.
Clean PCB contacts.
Replace PMT.
Replace Pre-amp PCB.
Replace Amplifier PCB.
Determine cause of instability
and correct.
Replace regulator.
Use high-voltage adjustment
procedure to monitor high-
voltage for stability. Replace if
necessary.
Replace PMT tube.
Use light leak test to find leaks
and repair as needed.
Determine cause of instability
and correct.
Replace regulator.
Replace PMT.
Use light leak test to find leaks
and repair as needed.
Use gas leak test to find leaks
and repair as needed.
Restore proper gas flow.
Ensure furnace temperature
and gas flows are correct.
Replace Membrane Dryer.
PAC L.P., All Rights Reserved, 2015