Lukas LZR 12-700 EN - Manual (Page 7)

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6.2.3 Type LZR../...
One-stage rams for pushing with constant compressive force over the whole stroke.
6.2.4 Type LTR ../...
Telescopic rams for pushing with different compressive forces in the piston stages and low
collapsed height in comparison with the stroke.
6.2.5 Type LZR 12/550 PS
One-stage ram with supplementary operating possibilities (patented)
- for pushing, as 6.2.3
- for piercing an opening (steel up to a thickness of 6mm) when using the penetration tip at
the piston rod.
- for increasing openings by a special peeling effect which is possible because of the peeling
attachment (at the piston rod) and the guiding at the piston pipe.
6.3 Hydraulic oil supply
6.3.1 LUKAS motor/engine pump or hand pump is used for operating the devices.
6.3.2 Note
If the pump power pack comes from a manufacturer other than LUKAS, it must be ensured that
it fulfils the LUKAS specifications, as otherwise dangers may occur for which LUKAS cannot be
held liable.
6.3.3 Hoses
The connection between pump power pack and rescue ram unit is normally effected with hoses.
If pipes are to be used, please contact LUKAS.
6.4 Control of movements in operation
6.4.1 Tool with control valve (standard version)
With this version the piston rod movement is controlled by the firmly mounted star grip control
valve (see cover page item 1.1).
7 Connection of the devices
7.1 Hydraulic
Two short hoses (each 0.5 m long) are fitted to the device; they are connected with the pump power
pack via a hose pair (5 m / 10 m / 20 m, as is necessary). All hoses are colour marked and have
rapid action couplings so that they can be connected without the risk of mix-up:
HP = High pressure ——> black R = reflux ——> blue
7.2 Connection of the plug-in coupling counterparts for HP and R hoses
The device is connected to the hydraulic pump with the plug-in coupling counterparts (plug and
socket), there being no risk of mix-up.