Vinten Radamec Fusion FP-145 - Manual (Page 20)

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5. Set the column lock (27) to the ON position (see Using the column lock on page 20) and lower the
moving column under hand restraint until the column lock engages.
6. Fit the camera and accessories to the mounting, ensuring that all items such as pan bars, prompters,
lenses etc, are fitted. Attaching these items at a later stage may upset the pedestal balance. Install
three trim weights (30) on the weight tray (3).
Balancing the load
The pedestal can be accurately pressurized to balance the full payload after installation of the mounting, cam-
era, accessories and all ancillary items such as pan bars.
To balance the full payload, proceed as follows:
1. Depress and rotate the height mode knob (26) anticlockwise to select manual operation.
2. Depress and rotate the cable release button (28) clockwise to disengage the robotic height drive.
3. Rotate the steering ring (29) so that the pressure gauge (2) is visible through the window (remove a
trim weight (30) if necessary). Check that the pedestal pressure approximately matches the estimated
payload (refer to the Pressurization Graph on page 16).
4. Push down on the steering ring (29) against residual pressure and release the column lock (27) (see
Using the column lock on page 20) and allow the column to extend using the steering ring (29) un-
der hand restraint.
5. Exercise the moving column (4) over its full travel at least twice, then position the column in the mid-
height position.
6. If the column tends to fall, remove a trim weight (30) from the weight tray (3) or increase pressure.
7. If the column tends to rise, reduce the pressure in steps of 0.15-0.20 bar (2-3 psi) using the Schrader
valve cap (1).
8. A correctly pressurized pedestal will balance its payload, allowing movement over the full on-shot
stroke of the moving column with minimum effort, and will maintain its position when the steering ring
is released. Fine balance and temperature correction may be achieved by adding or removing trim
weights.
Note: It is possible to extend the column while ‘automatic’ is selected. However, robotic drive
gas-struts will remain engaged, upsetting the column balance.
Note: It is only possible to depress and rotate the cable release button when the column (4) is
fully depressed.
CAUTION! Do not reduce pedestal pressure below 3.5 bar (50 psi). This ensures that the elevating
mechanism remains in tension, preventing damage to the pedestal.
Note: The Schrader valve cap (1) forms a primary pressure seal. Always replace the cap and
screw it down finger- tight.