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2.10.1. Compressed Air Isolation
Compressed air can be isolated by ensuring that the ACM 150 monitor compressed air
isolation valves for the supply have been installed during installation or setup. Since each
site’s requirements vary, it is up to the end-user to provide this isolation. Compressed air-
stored energy can be removed by shutting off the air supply and allowing the pressure to
bleed. Under regular automatic operation, the pressure should bleed down through the
venturis in seconds. Under manual operation, it may be necessary to actuate the venturi
supply solenoid valve briefly to bleed off the pressure. Pressure gauges are provided on
the venturi manifold assembly to help verify that the pressure has been relieved.
2.10.2. Nitrogen Isolation
Nitrogen under low pressure purges sample gases between cycles. It also continuously
purges the optics bench mirrors through a small orifice. Shutting off the nitrogen supply
should relieve any stored pressure through the optics bench purge without further action.
2.11.
Emissions
The ACM 150 monitor does not emit or generate hazardous ionizing/non-ionizing radiation
or audio noise.
2.12.
Ergonomics
Ergonomic factors such as the height and weight of the monitor do not pose a significant
hazard. The monitor's height should be comfortable, with the computer approximately 4
feet above the ground. It is recommended that a work stool be used while working for long
periods.
Two heavy components may need infrequent servicing or replacement every few years.
The optics bench contains components that Honeywell can replace. Care should be
exercised when lifting and removing it. When removing it for off-site service, Honeywell
suggests positioning an adjustable-height wheeled platform or dolly level with the optics
drawer. With the drawer open, the bench can be safely slid onto the platform and
transported as needed.
The backup exhaust pump is also heavy. Should the pump need replacing, care should
also be exercised.
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