Lukas PO6 - Manual (Page 6)

6
8 Lifting with single-acting jacks
8.1 Power pack type PO6 - 1E and GO6 - 1E
8.1.1 Connection
Remove the screw plug at connection A of the valve block and screw in hose
connection nipple. Connect pipe or hose to cylinder.
Connection "T" stays locked.
8.1.2 Operation (see fig. 2)
Start the motor and close drain valve (turn hand wheel 1 to the right to fully
closed position) so the jack extends with the motor running. The load holding function can be
obtained by switching the motor off. The piston can be retracted (by spring pressure) by opening
the drain valve (turn hand wheel 1 to the left).
8.2 Power pack Typ PO6 - 2E and GO6 - 2E
Remove the screw plug at connection A/B of the valve block and screw in hose connection nipple.
Connect pipe or hose to cylinder.
Connection "T" stays locked.
8.2.1 Extension of the cylinder (see fig. 3)
-
prior to starting the motor the hand wheels (3) on the 2-way distributor
valve must be closed (turn them to the right)
- start the motor,
- open both hand wheels slowly and simultaneously,
- synchronize the extension speed of both cylinders by further opening
or partly closing the hand wheels.
8.2.2 Load holding function
With version 2E a reliable load holding function can be obtained only when
both hand wheels (3) on the 2-way distributor valve are fully closed.
By no means the motor is allowed to be switched off with the hand wheels open as long as
a load is resting on the cylinders!
8.2.3 Retraction of the cylinders
-
hand wheels (3) on the 2-way distributor valve are closed,
- open hand wheel (1) on the drain valve (turn it to the left),
- slowly open hand wheels (3) on the 2-way distributor valve,
- control the retraction speed of both cylinders by further opening resp. partly closing the
hand wheels.
9 Lifting with double-acting jacks
9.1 Power pack Typ PO6-1D and GO6-1D
9.1.1 Connection
Remove screw plug at connections A and B of the valve block and screw in hose connection nipple.
Connect pipe or hose to cylinder.
Connection: "A" to piston side, "B" to piston rod side
fig. 2
fig. 3