Components For Automatic Back-Purging Procedure; Start Of The Back-Purging Procedure - ABB GAA330-M Operating Instructions Manual

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Components for automatic back-purging procedure

Components for automatic back-purging procedure
Control of the automatic back-purging procedure

Start of the back-purging procedure

Start of the back-purging procedure
Start controlled by time
Start controlled by event
Manually controlled start
GAA330-M EMISSION MONITORING SYSTEM
To carry out the automatic back-purging of the filter unit, components are
integrated in the analyzer system as follows:
the PFE2 filter unit with valves combination for back-purging or
•
the PFE3 filter unit and separate back-purging unit with integrated
•
compressed-air conditioning components and
the AC500 control program.
•
The back-purging procedure is integrated into the AC500 control program
of the analyzer system. The manual handling is carried out with the push-
button "Back-Flush" on the analyzer system's front plate.
The start of the back-purging procedure can be carried out
Controlled by time
•
Controlled by event
•
Manually controlled.
•
After a cycle time has run down, the back-purging procedure will start auto-
matically. A cycle time of 8 hours is factory-set.
A flow fault during normal measuring operation will start the automatic
back-purging procedure. After back-purging was started by event, the pro-
cedure will run only once. If the procedure is finished (waiting time 30 s) and
the starting event (flow fault) is still active, the back-purging procedure will
not start again, even not controlled by time, and a status message will be
generated. However, the back-purging procedure can be started manually
after 30 minutes.
The manual start of back-purging procedure can be executed locally by
pushing the "Back-Flush" pushbutton on the analyzer system's front plate.
| OI/GAA330-M-EN REV. C