Thermo Scientific 42i Instruction Manual page 165

Thermo Fisher Scientific
Malfunction Possible Cause
Defective cooler
Non-linear response Incorrect calibration source
Leak in sample probe line
Excessive response Partially blocked sample
time capillary
Hang up/blockage in sample
filter
Improper converter Questionable calibration gas
operation
Converter temperature too high
or too low
Low line voltage
Molybdenum consumed
Troubleshooting
Troubleshooting Guides
Action
Check temperature (less than -
2 °C at T = 25 °C).
amb
Verify accuracy of multipoint
calibration source gas.
Check for variable dilution.
Unplug power cord. Clean or
replace capillary.
Change element.
Verify accuracy.
Temperature should be
approximately 325 °C for
Molybdenum, 625 °C for
stainless steel.
Check to see if line voltage is
within specifications.
Replace Molybdenum converter
cartridge.
Model 42i Instruction Manual 6-3