Newport IPV, Руководство по установке

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3
WARNING
The table top is attached to the isolators with clamps and hex
head bolts. In the event of an earthquake, the table may
collapse. For areas susceptible to earthquakes, we recommend
that Newport Earthquake Restraints be installed on each
Vibration Control System.
WARNING
The table top is a metallic electrical conductor. For installations
where electrical shock is a possibility, the table top should be
grounded to prevent personal injury.
1.6 Air Supply Requirements
A constant supply of air must be connected to the Vibration Control System
during operation. After initial setup and filling, the isolators consume air
only when the leveling valves adjust the pressure to compensate for changes
in the load on the table.
Bottled nitrogen or mechanically compressed air may be used. The required
pressure is determined by dividing the total load, including table weight, by
the total isolator diaphragm area (25.9 in
2 per isolator) plus
5-10 psig.
For example, if the table plus load is 2850 pounds and will be mounted on 4
isolators, the required pressure is:
Note that the maximum operating pressure for the system is 95 psig
(6.7 kg/cm
2
).
The Newport Model ACGP air compressor is an extremely quiet source of
clean, pressure regulated air. If another compressor or plant air is used, the
Newport model ARF Air Regulator Filter should be used to ensure
maintenance free operation. These filters prevent water and dirt from getting
into the leveling valves and causing the valves to fail due to clogging.
The supply should include a valve so that the air may be shut off during
maintenance or extensive setup when the load is changed drastically.
CAUTION
Bottled carbon dioxide (CO
2
) is not recommended since “icing”
can occur during rapid filling of the isolators.