14
Balancing the load
After pressurization of the pedestal, the pan and tilt head and payload can be accurately balanced,
as follows:
Push down on the steering ring
against residual pressure and release the safety catch
. 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 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
.
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 cor-
rection may be achieved by adding or removing trim weights.
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
forms a primary pressure seal.
Always replace the cap and screw it down finger-tight.