Newport IPV, Installation Manual

Page: 18 / 65

12
Figure 9 — Detail of Valve Connections, Single Isolator
2. Close the metering needle valve (Figure 9) on each valve and then open
it
1
⁄
2
turn for each isolator that is connected to it. For example, if the
valve controls two isolators, the needle valve is opened 1 full turn.
[Please note: If you have a minimum load on your optical table top, open
the metering valve about
1
⁄
8
–
1
⁄
4
of a turn.]
3. Turn on the air supply and adjust the regulator for the pressure calculated
using the formula given in Section 1.6. This pressure must not exceed
95psig (6.7 kg/cm
2
).
Figure 10 — Detail of Valve Connections, Two Isolators
4. Check all connections for leaks. Correct or repair any leaks before
proceeding.
5. If the table does not float within several minutes, increase the air
pressure until the table floats or adjust the value height sensors to hold
Metering needle
valve