probst JUMBO-BV-VARIO Manual page 79

Vacuum Hose Lifter Components
Lifting hose unit with Operating Valve Unit
Adjusting the hovering
position with load
Attention
Lowering, Placing
Danger
Turn the adjusting screw (2) to adjust the hovering position with the load.
Caution: Do not confuse this adjustment with the hovering position without load.

Turn screw clockwise

Turn screw counter-clockwise
Attention: the hovering position with load should not be adjusted to the highest
position of the control unit because otherwise:

the blower could be damaged and fail,
all guarantee claims are void!

power is wasted unnecessarily.

Slowly move the regulator lever (1) downward - "Lower". The lifting tube
descends and the vacuum head lowers with the load.
Do not operate the regulator lever control abruptly, while you firmly hold the
handlebar (3), as this can cause the load to fall off, because the vacuum
suddenly vanishes.

Lower the load to the chosen position.

To land the load push the regulator lever down all the way. Tip the valve
control box a little and lift it off the load.
Status 08.2012 / Index 05
 the hovering position will be lower.
 the hovering position will be higher.
Page 12/15