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Preventative Maintenance
Replacement Parts
Replacement Parts
Cleaning the Outside
Ozonator Air Feed
Drying Column
Replacement
Capillaries Inspection
and Replacement
5-2
Model 42i Trace Level Instruction Manual
See the "Servicing" chapter for a list of replacement parts.
Clean the outside case using a damp cloth being careful not to damage the
labels on the case.
Case
Equipment Damage Do not use solvents or other cleaning products to
clean the outside case.
Use the following procedure to replace the ozonator air feed drying
column.
1. Remove the drying column from the connector DRY AIR bulkhead on
the rear panel of the instrument.
2. Replace spent absorbent material (indicating Drierite or silica gel) with
new or regenerated material.
3. Reinstall the drying column to the DRY AIR bulkhead.
4. Perform a Zero/Span check (see the "Calibration" chapter).
The capillaries normally only require inspection when instrument
performance indicates that there may be a flow problem.
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling any internal component. For more
information about appropriate safety precautions, see the "Servicing"
chapter.
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Use the following procedure to inspect and replace the capillaries. This
procedure can be used to check any or all of the capillaries.
1. Turn the instrument OFF and unplug the power cord.
2. Remove the instrument cover.
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Thermo Fisher Scientific
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Troubleshooting
