Thermo Scientific SOLA II Flare User Manual page 99

Thermo Scientific
Malfunction Possible Cause
Sample Flow alarm Sample supply inadequate or
displayed 1 valves are closed or misaligned
Filtration system obstructed
Fast loop bypass flow set too
high
Chamber Flow alarm Blocked line from mixing
displayed chamber to valve
1
Inadequate supply of combustion
air
Lamp Voltage alarm UV lamp is old/deteriorated
displayed 1
Bench contaminated with
incompletely combusted
materials.
Chamber Detector temperature not
Temperature alarm stabilized after service or
displayed enclosure opened
1
Ambient temperature or purge
air is outside ambient
temperature limits
Thermistor not positioned
correctly
Inject Temperature Instrument is starting up and not
alarm displayed 1 reaching control temperature for
the pyrolyzer and oven
Pyrolyzer heater failure
Pyrolyzer or oven temperature
failure
Valve Fault alarm Injection valve worn or
scratched, causing port-to-port
displayed 1
leakage
Defective flasher lamp, trigger
pack, or lamp intensity control
electronics
Maintenance & Troubleshooting
Action
Check process conditions and availability of
sample supply. Ensure all valves are
properly aligned.
Clean or replace filters.
Adjust bypass flow rate.
Check lines.
Replace UV lamp.
Purge system with carrier air (no sample)
until output signal stabilizes. May take
several days in severe cases.
Close doors and allow system to stabilize.
Measure ambient and purge air
temperatures and correct as necessary.
Reposition Thermistor.
Normal alarm during start-up until pyrolyzer
and oven temperatures stabilize.
Check pyrolyzer temperature. If much lower
than normal and not increasing, check for
voltage across the heater terminals. If
voltage is present, shut down the
instrument, disconnect the pyrolyzer heater
contacts and measure heater continuity.
Replace heater if it shows open.
Check electronics and replace if necessary.
Replace valve rotor. In extreme cases,
replace entire valve head. Check filtration
system to ensure particulate is not getting
to the injection valve.
Check lamp, trigger pack, and electronics.
Replace if necessary.
SOLA II Flare User Manual
Chapter 8
8-19