Vinten OB Quattro, Operator'S Manual

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8
Introduction
The OB Quattro pedestal comprises a central four-stage telescopic column mounted in a steera-
ble base.
The moving column (6) is pressurized from an external pressure source. A weight tray (2) is at-
tached to the top of the column and trim weights (1)(19) are provided for fine balance. The weight
tray also provides a standard four-bolt mounting (20) for a pan and tilt head and the pedestal is
steered by means of a steering wheel mounted on its underside.
The column is locked in the fully-depressed position by two locks (4) on the weight tray which en-
gage with spigots (18) at the base of the column.
An on-shot clamp (10) and a drag control (17) are provided at the base of the column.
The base is carried on three pairs of twin wheels. The pedestal is supplied with 200 mm (7.9 in.)
solid rubber wheels with cable guards
(11) . Alternative 160 mm (6.3 in.) solid polymer composite
wheels are available. The wheels are easily interchangeable (See Changing the wheels ) . A
parking brake is provided on one wheel, operated by a foot pedal (8) .
The crab/steer pedal (7) allows the operator to switch between conventional and crab steering.
Stowage for the trim weights (13) is provided on the upper surface of the base and two lifting han-
dles (9) are provided on each face.