Lukas HP Cylinders - Manual (Page 20)

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9. Dismantling the device /
deactivation following operation
WARNING / CAUTION / ATTENTION!
Before dismantling the re-railing equipment, please ensure that the moved load
is in a stable and firm position!
9.1 Hydraulic cylinder
After completion of the work, the hydraulic cylinders must be retracted leaving only a few
mm*) projecting. This relieves the hydraulic and mechanical strain on the device.
NOTE:
When hydraulic cylinders are in storage, fluctuations in ambient temperature
can cause the pistons to move slightly. This phenomenon is due to the
difference in the expansion of the hydraulic fluid enclosed on the piston side
and the rod side.
*) 1 mm = 0.04 in.
9.2 Hydraulic unit
9.3 Hose lines
Upon completion of work, the unit must be deactivated.
First of all, decouple the pressure hose then the return hose as described in chapter
“Connecting the equipment”.
Ensure that you replace the dust protection caps onto the mono-coupling halves.