Vinten OSPREY stuido S, Руководство пользователя

Страница: 17 / 32

15
Installation
Balancing the Payload
After pressurization of the pedestal, the pan and tilt head and payload
can be accurately balanced, as follows:
Push down on the steering ring (3) against residual pressure and
release the safety catch (14). Allow the column to extend under hand
restraint.
Exercise the moving column over its full travel at least twice, then
position the column in the mid-height position.
If the column tends to fall, remove a trim weight (12) or increase
pressure.
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 (25).
!
WARNING!
Do not reduce pedestal pressure below 3.5
bar (50 psi). This ensures that the elevating mechanism
remains in tension.
!
WARNING! The Schrader valve cap (1) forms a primary
pressure seal. Always replace the cap and screw it down
finger-tight.
A correctly pressurized pedestal will balance its payload such that
it can be moved to any position over the full on-shot stroke of the
moving column, with minimum effort, and it will maintain its position
when the steering ring is released.
Fine balance and temperature correction may be achieved by
adding or removing trim weights (12).