SRS Labs QMS 100 Series, Руководство пользователя

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Component Replacement 5-23
Technical Reference
Filament Replacement
The filament eventually wears out and needs to be replaced. The replacement procedure is simple and
can be completed in a few minutes by qualified personnel.
The filament is very delicate and should be handled with extreme care. The thoria coating is very
delicate and can easily be damaged if the filament is mishandled. Please read the following handling
recommendations before opening the filament’s box:
Handling Notes
•
Do not bend, or twist the filament.
•
Do not scratch the filament’s Thoria coating.
•
Do not handle the filament directly with your fingers, use fine tweezers, and hold it by the
platinum tabs only.
•
Do not attempt to clean the filament.
•
Use only SRS provided filaments as replacement.
Equipment
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Filament Replacement kit: consisting of new filament, and spare screws and nuts.
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One standard OFHC copper gasket for 2 3/4” CF Flange. New and Clean!
•
Precision flat-head screw driver: 2.5mm head.
•
Needle nose pliers.
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Latex gloves/powder free.
•
Clean, dust-free work area.
Procedure
1. Read all warnings at the beginning of this chapter before attempting to service the probe.
2. Set up in advance a clean, dust-free working area where to carry out this procedure.
3. Turn off the RGA and disconnect the ECU from the probe.
4. Wait for the probe to cool down for at least 30 minutes after the emission is turned off. Severe
burns can result if the probe is handled too soon .
5. Unscrew the six bolts from the RGA’s mounting flange and remove the entire probe from the
vacuum system (Note the rotational orientation of the RGA Mounting Flange before removing
the probe from the vacuum system so that it can be placed in the exact same orientation at the
end of the procedure. Mark the side of the flanges with a permanent marker if necessary.). The
ionizer is now fully exposed and easily accessible.