Gasguard
®
250 VMB System Installation Manual
Air Products and Chemicals, Inc. Page i - iv
Table of Contents
Section 1: Safety Warnings..............................................................................................1-1
1.1 Introduction....................................................................................................1-1
1.2 Inert Gas Hazards...........................................................................................1-3
1.3 Pressurized Fluids / Gases .............................................................................1-5
1.4 Electrical Hazard............................................................................................1-5
1.5 Falling Equipment Hazard.............................................................................1-6
1.6 Pinch Hazard..................................................................................................1-6
Section 2: Dimensions and Mounting..............................................................................2-1
2.1 Outline Dimensions .......................................................................................2-1
2.2 Mounting Hole Locations ..............................................................................2-4
2.3 Open Controller Dimensional Requirements.................................................2-4
Section 3: Tubing Connections........................................................................................3-1
3.1 Tubing Interconnections ................................................................................3-1
3.2 Process Line Connection................................................................................3-3
3.3 Vent Line........................................................................................................3-4
3.4 Venturi Line...................................................................................................3-6
3.5 Purge Line......................................................................................................3-6
3.6 Pneumatic Supply ..........................................................................................3-7
3.7 Enclosure Exhaust System Requirements......................................................3-8
3.8 Weld Shield Gas, Purge Gas Connection ......................................................3-10
3.9 Helium Leak Test Port...................................................................................3-11
3.10 Hazardous Gas Leak Detection System (Customer Requirement) ..............3-11
Section 4: Electrical Connections....................................................................................4-1
4.1 Grounding Method.........................................................................................4-2
4.2 Power Supply Connection..............................................................................4-3
4.3 Field Connections ..........................................................................................4-5
4.4 External I/O Communication.........................................................................4-6
4.4.1 Gasguard 250 Controller.................................................................4-6
4.5 PC and MMMS Gasguard Networks.............................................................4-9
4.5.1 General Description ........................................................................4-9
4.5.2 Gasguard 250 Controller Connections............................................4-10
4.5.3 PC Network Breakout Box .............................................................4-10
4.5.4 PC Network Field Wiring...............................................................4-11
4.5.5 MMMS Network Wiring Configuration.........................................4-12
4.5.6 MMMS Network Interface Box......................................................4-13
4.5.7 MMMS Network Field Wiring.......................................................4-13
Section 5: Helium Leak Testing.......................................................................................5-1
Section 6: Valve Manifold Box Functional Checklist.....................................................6-1
Appendix..........................................................................................................................A-1
