Operation; Unpacking; Column Check; Steering Mechanism Checks - Vinten Quattro SL Operating Instructions Manual

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Unpacking

Unpack the pedestal, ensuring that all transport packing and retaining fixings are removed.
WARNING!

Column check

WARNING!
Ensure pedestal pressure is approximately 3.5 bar (50 psi). Increase or reduce as necessary, using the
Schrader valve (16).
Remove the self-adhesive safety catch warning covers (if fitted).
Push down on the weight tray (1) against residual pressure. At the safety catches (3), push the rocker
switches to the unlocked position. Allow the column to extend under hand restraint.
Exercise the column several times over its full stroke.
Push down on the weight tray (1) and push the safety catch rocker switches (3) to the locked position.

Steering mechanism checks

Two types of indicator may be fitted on the steering ring to show the straight-ahead position. One type
consists of a plastic moulding (21) as shown in Fig 1. The other comprises two groups of rivets on the
underside of the steering ring, as shown in Fig 5.
Align a steering indicator (21) with the crab/steer pedal (15). Press the pedal to select CRAB Turn the
steering ring and check that all three wheels turn together and all point in the same direction.
Align a steering indicator (21) with the crab/steer pedal (15) and press the pedal to select STEER. Turn the
steering ring and check that two of the wheels lock in the straight-ahead position and that the third wheel
(below the brake pedal) can be turned by the steering ring.
10

Operation

The Quattro SL pedestal has a mass of 150 kg (331 lb). Take care when
lifting the pedestal. Do not lift the pedestal by the steering ring - use the
lifting apertures (9). Do not release the safety catches (3) at this stage.
A pressure retaining valve prevents pedestal pressure being reduced
below approximately 3.5 bar (50 psi), indicated by the yellow segment on
the pressure gauge (7).
In the event that pressure has fallen below this, pressurize the pedestal to
approximately 3.5 bar (50 psi) before attempting to extend the column.