Ametek Western Research IPS-4, Руководство пользователя

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Maintenance and Troubleshooting | 5-17
10. GP Analyzers Only:
Turn on the Instrument Air supply to the analyzer and open the Aspi-
rator Air valve.
11. Take all necessary precautions to safely power up the analyzer and
prepare it for operation:
Before proceeding, test the area around the analyzer for flammable
gases. If an explosive gas atmosphere is present, do not apply power to
the analyzer or any alternate power sources that supply power to the
analyzer components. Proceed only when the area is found to be safe.
It is necessary to work with the Electronics Enclosure door open after
replacing parts in the Measuring Cell.
When the analyzer doors are open, take appropriate precautions to
avoid electrical shock. Hazardous voltages are present inside.
For all applications:
If heated Sample and Vent Lines are used, do not apply power to them
until after the Leak Check has been performed.
Do not close the Oven Heater fuse (if used) until after the Leak Check
has been performed.
GP Analyzers:
Apply power to the analyzer and its temperature-control zone circuit-
ry by closing the Main AC Power , DC Power , and Bench Heater fuses.
Purged Analyzers:
Insert the key into the Purge Bypass Switch and switch it to the
“ BYPASS ” position (follow company policy). Follow any “Special
Conditions for Safe Use” listed in accompanying certifications.
Hazardous Location Applications:
Close the power-disconnect switch (breaker) to apply main AC Power
to the analyzer.
12. Perform a leak check on all of the fittings that were reconnected. If
necessary, follow the procedure under “Sample System Leak Check,”
in Chapter 3.
After the leak check has been performed and has passed, return to this
procedure and continue with the remaining steps.
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WARNING
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WARNING