Maintenance and Troubleshooting | 5-15
10. GP Analyzers Only:
Turn on the Instrument Air supply to the analyzer and open the
Aspirator Air valve.
11. Power up the analyzer:
It is necessary to work with the Electronics Enclosure door open after
replacing parts in the Heater Assembly.
When the analyzer’s covers and doors are open, take appropriate precau-
tions to avoid electrical shock. Hazardous voltages are present inside.
GP Analyzers:
Close the ASR Probe fuse and replace the Sample and Vent Line fuses.
Do not close the Oven Heater fuse at this time, until after the Leak
Check has been performed.
Close the Analyzer fuse to apply AC power to the analyzer.
Purged Analyzers:
Insert the key into the Purge Bypass Switch and switch it to the
“BYPASS” position (follow company policy).
[Special Conditions for Safe Use]
The analyzer may only be energized by using the Purge Bypass
Switch with permission of the works manager or his proxy. The per-
mission may only be given when it is made sure that during the time
the system is energized by using this switch an explosive atmosphere
is not present or when the necessary protective measures against
explosion hazard have been taken (“hot permit”).
The analyzer enclosure may not be opened when an explosive atmo-
sphere is present.
Close the explosion-proof power-disconnect switch to apply main AC
power to the analyzer. Do not close the Oven Heater fuse at this time,
until after the Leak Check has been performed.
12. Perform a leak check on the sample system fittings that were
disconnected.
!
WARNING
!
WARNING
See “Sample System
Leak Check” in Chapter 3.
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