MNL000446.doc
Revision 00
09/19/2016
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
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Note: The following descriptions of system sequences are not
intended as a guide to operation. Use specific operating
procedures, provided in Section 8, to operate the system.
The following sections provide a brief description of what occurs during each of
the operations in the Branch Menu.
Process Gas Flow
This operation is highlighted when the desired Branch menu is selected. It starts
process gas flow to the process tool for the selected Branch, or stops flow if the
Branch is currently flowing gas.
The start sequence enables all Branch specific process alarms and checks for
adequate process gas pressure.
If problems are found, an alarm is displayed. Details of these alarms are located in
Section 11 (System Specific Information) of this manual.
If no problems are found, flow is started and continues until a process stop is
selected, or an alarm condition causes a shutdown. The excess flow alarm is
disabled for a brief variable time at the start of flow to prevent false trips during
initial filling of the process line.
Line Purge
NOTE: Line refers to the component assembly within the Branch
that can be removed for maintenance or replacement. The Branch
outlet manual valve is closed during the Line purge sequence.