Vinten 3702, Руководство по обслуживанию

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Nitrogen charging procedure
9 Charge the pedestal with nitrogen as follows:-
9.1 Connect nitrogen supply to the charging valve (12) on the pedestal, ensuring that the conditions
of the above caution are observed. A recommended charging kit for this pedestal is the charging valve
assembly, Vinten Part No. 3702-32. Note that this piece of equipment is NOT a pressure reducing valve.
9.2 Ascertain known payload to be fitted to pedestal (known payload = pan and tilt head, camera,
lens and all ancillary equipment). Referring to the graph (Fig 2.1) , mark the payload on the horizontal
axis then strike a vertical line from the load figure to the balance line. At the intersecting point strike a
horizontal line to the vertical axis of the graph and read off the gas pressure. Charge the pedestal gas
tank to this pressure.
9.3 Fit the pan and tilt head to the platform then fit the camera and accessories. A cable clamp (7) is
provided on the pedestal base for camera cables.
Fig 2.1 Pressurization graph
WARNING!: A pressure reducing valve must be fitted to the pressure line between the
nitrogen cylinder and the outlet connection of the hose. The reducing valve must be
screwed into the nitrogen cylinder outlet. the maximum pressure on the outlet side of
the reducing valve when charging this pedestal must not exceed 19.31 bar (280 psi).
20
240
lb
kg
18
20
bar psi
16
14
12
10
8
6
4
30 40 50 60 70 80 90 100 110 120 130 140 150 160
60
80
100
120
140
160
180
200
220
240
260
280
200 180 160 140 120 100 80 60 40 220 260 280 300 320 340
Gas Pressure
Payload
≤
19.31 bar
(280 psi)