3-20 | Model 888 ATEX IECEx Tail Gas Analyzer
Figure 3-6. Purge Controller and Default Password.
For the Electrical Enclosure Purge System to operate properly the enclo-
sure’s door must be securely closed.
Adjusting the Purge Controller
The purge controller is programmed at the factory to run automatically.
However, it may be necessary to make adjustments based on the utilities
present at the installation site.
1. Connect a regulated source of instrument air or nitrogen to the purge
inlet.
2. Locate the terminal block inside the flameproof enclosure. Apply
mains power to the terminal block.
3. Once power has been applied, the purge controller will start a fast
purge of the electronics enclosure.
If a fast purge does not start:
Check the blue “safe pressure” indicator on the purge controller to ensure
that it is turned on.
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