Replacing The Fid End Cap; Flow Tests - Thermo Scientific TVA2020 Instruction Manual

Servicing

Replacing the FID End Cap

Replacing the
FID End Cap

Flow Tests

7-14 TVA2020 Instruction Manual
The flame arrestor, located in the center of the FID end cap, is a critical
safety feature to prevent flame propagation into a potentially hazardous
area. It has been precision fit into the end cap and must be replaced as an
assembly.
1. Remove the hydrogen tank from the top of the instrument and turn off
the power.
2. Using the special spanner wrench provided with the tool kit, unscrew
and remove the FID detector cap.
3. Replace the end cap as a full assembly.
Most flow problems can be traced to a loose connection or dirty filters.
Based on that premise this section is organized from the least to the most
invasive repair procedures. Reference the Sample Flow Troubleshooting
Flowchart (Figure 7–16) to diagnose flow problems. Start with the Leak
Check procedure with the probe connected to the instrument. The leak
and flow check procedures can be performed on the sub assemblies to
identify the source of the problem.
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