Lukas Double-acting Rope-lift cylinder - Manual (Page 7)

7
Important!
Some quick couplers have special functions and therefore must not be unscrewed from the hoses
and/or interchanged.
To avoid dirt from entering when the couplings are disconnected, fit dust protection caps on the plug
and socket or, if the couplings are connected, fit the dust protection caps together.
6 Initial commissioning
The cylinders must be vented prior to being used for the first time.
-
Extend the pistons approximately halfway when they are free from any load.
- Turn the cylinders upside down; the cylinder’s highest point must be under the motor pump
connections.
- Extend the pistons two or three times by using the appropriate switch control valve so that
air can escape from the cylinders and hoses.
7 Installation
7.1 Safety notes
7.1.1 Prior to installing the cylinder, the load to be lifted must be secured against slipping as
prescribed in the respective applicable guidelines. Always observe the load while it is being
moved by means of the cylinder!
It is forbidden for persons to be under suspended loads. If this is unavoidable in exceptional
situations, then these loads must be adequately mechanically secured so that they cannot shift
in any direction.
7.1.2 General information for cylinder installation / operation
- The ground must be non-slip and level, (warning: hydraulic oils may produce a lubricating
film on the floor.)
- The ground must be a continuous surface (no gratings, gravel etc.)
- Never place cylinders on a yielding support
- Never use cylinders without a piston guard plate in order to prevent piston damage; and
always use a LUKAS radius plate to ensure that force is transmitted safely (refer to
Accessories, Chapter 9).
- Make sure there is centred load initiation on the pistons. If necessary, look for a better
load application point.
7.1.3 Note for cylinder retraction
The load may only be lowered when the pump is running, otherwise a vacuum would be caused
when the load retracts and air would then enter into the hydraulic system.
8 Hydraulic connection and operation
8.1 General
Only connect the cylinders after installation has been carried out correctly in accordance with
Chapter 7. Switch off the motor pump before connecting hydraulic hoses.
8.1.1 Connection of the rope-lift cylinder
As described in Section 5.3, connect the blues hose first, then the red hose of the hose pair.