Decoking; General Troubleshooting - Thermo Scientific SOLA II Flare User Manual

Decoking

General
Troubleshooting
Thermo Scientific
Coking (carbon buildup) can occur in the pyrolyzer reaction tube when sample
or calibration flow is too high or when there is no airflow. It is evidenced by a
light brown or black coating on the inside of the reaction tube. Carbon buildup
in the reaction tube absorbs SO
invalid results.
Note Thermo Scientific does not recommend decoking the tube. Instead,
replace the tube according to the previous section.▲
The analyzer has been designed to achieve a high level of reliability. Only
premium components are used to ensure that complete failure is rare. In the
event of problems or failure, the troubleshooting guidelines presented in the
following table should be helpful in isolating the fault.
Table 8-3. Troubleshooting
Malfunction Possible Cause
Analyzer does not No power
start up
Digital electronics
No response to Instrument problems
sample
Bad calibration
Flasher power supply
Lamp trigger pack
Lamp
Warning Do not look directly
into lamp without proper
eyewear. ▲
PMT high voltage power supply
PMT
Digital electronics
Low or no sample flow
, resulting in poor instrument performance and
2
Action
Ensure instrument is connected to the
proper source
Ensure boards are seated properly and
interconnecting cables are in place.
Replace boards one at a time to isolate
faulty board.
Check for alarm messages and correct as
necessary.
Ensure proper calibration.
Replace with known good board.
Replace with known good board.
Remove lamp and socket from flash holder
by loosening the single set screw. Lamp
flash should be clearly visible at 20 yards
distance in well-lit room.
Check voltage on high voltage power supply
connector: Should be close to the setting.
Replace with known good board.
Replace board one at a time to isolate
faulty board.
Check trend of chamber flow at
workstation. If chamber flow is low or
trending down, check for stoppage at the
injection valve.
SOLA II Flare User Manual
Chapter 8
Maintenance & Troubleshooting
8-18