11
Operation
Unpacking
Unpack the pedestal, ensuring that all transport packing is removed.
Column check
Ensure pedestal pressure is approximately 3.5 bar (50 psi). Increase or reduce as necessary, us-
ing the Schrader valve
.
Remove the self-adhesive safety catch warning covers.
Push down on the weight tray
against residual pressure. At the safety catches
, 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
and push the safety catch rocker switches
sition.
Steering mechanism checks
Align the steering indicator
with the crab/steer pedal
and press the pedal to select CRAB -
3. Turn the steering ring and check that all three wheels turn together and all point in the same
direction.
with the crab/steer pedal
and press to select STEER - 1. Turn
the steering ring and check that two of the wheels lock in the straight-ahead position and that the
third wheel (below the pedal) is turned by the steering ring.
WARNING! The Quattro-OBL pedestal has a mass of 117 kg (257 lb). Take
care when lifting the pedestal. Always use the lifting handles
. Do not lift the pedestal by the base casting or by the steer-
ing ring.
Do not release the safety catches
at this stage.
WARNING! 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
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.