Air Products Gasguard 250, Installation Manual

Page: 52 / 68

Gasguard
®
250 VMB System Installation Manual
Air Products and Chemicals, Inc. Page 6 - 2
Valve Manifold Box Utility Checklist
1. VMB located and mounted to floor or wall (see Section 2.)
2. VMB exhaust duct installed, functioning and monitored for
loss of exhaust (see Section 3.7).
3. Grounding wire installed (VMB and controller) and checked
for less than 1 ohm resistance (see Section 4.1).
4. Electrical power (120/240 VAC, 50/60 Hz) connected (see
Section 4.2).
5. Remote I/O wiring installed and checked (see Section 4.4).
6. Gasguard Network wiring installed (if applicable) and
configured on the host (see Section 4.5).
7. Process lines installed and helium leak tested (see Section
3.2).
8. Vent line installed and helium leak tested (see Section 3.3).
9. Venturi line installed, leak tested and 75-95 psig of nitrogen
available (see Section 3.4).
10. Purge line installed and helium leak tested (see Section 3.5).
(If external purge cylinder utilized.)
11. Pneumatic supply connected to controller and 75-95 psig of
nitrogen available (see Section 3.6).
12. Valve manifold box internal piping helium leak tested (see
Section 5).
13. Purge cylinder available, if required.
14. Hazardous gas monitor installed and operating.