Cleaning The Fid Detector Cavities - Thermo Scientific TVA2020 Instruction Manual

Preventive Maintenance

Cleaning the FID Detector Cavities

Cleaning the FID
Detector Cavities
5-10 TVA2020 Instruction Manual
Use the following procedure to clean the FID detector cavity.
1. Remove the hydrogen tank from the top of the instrument. Turn the
instrument off.
2. Using the special spanner wrench provided with the tool kit, unscrew
the cap holding the detector cap.
3. Using the special extractor tool provided with the tool kit, screw the
extractor into the cartridge.
4. Remove the cartridge by pulling on the extractor. Unscrew the
extractor from the cartridge.
5. Carefully clean the inside of the detector cavity using a cotton swab and
isopropyl alcohol. Be sure to clean the high voltage contacts along the
side of the cavity. Be especially careful around the detector signal
collector probe at the rear of the cavity (and the thermocouple probe in
the FID).
6. Dry the inside of the cavity using a low heat gun.
7. Insert the cartridges into their respective cavities by reversing the
procedure. Note that the cartridges must be rotated to properly locate
the key tabs.
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