Lukas CU 4DVV - Manual (Page 9)

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4. Components and functions
4.1 Description
The CU range of control tables consist of a control desk with support frame and a large
number of valves. The valves are actuated by control levers. The control levers automatically
return to the neutral or middle position when released (dead man's handle - depressurised
circulation with hydraulic load holding).
The control table has been developed for connection of double-acting cylinders, but single-
acting cylinders can also be connected and controlled to a limited extent. If necessary you
may need to consult LUKAS or one of their authorised dealers.
The control tables are rigidly mounted on a support frame that can be folded fl at for space-
saving storage.
Pressure gauges are mounted on the control tables as standard. Each pressure gauge
shows the pressure generated by each individual pump circuit and which is present at the
control table via the power unit.
The hydraulic power packs developed for the single control table are 2POWER packs with
two circuits, and the power packs developed for the double control table are 4POWER packs
with four circuits.
Only LUKAS hydraulic power packs may be used to drive the equipment.
If the pump unit supplying the pressure is from a different manufacturer you need to make
sure that it is made in accordance with the stipulations laid down by LUKAS. If this is not the
case, dangers can arise that cannot be attributed to LUKAS.
Ensure in particular that the maximum permissible operating pressure for the connected
LUKAS equipment is not exceeded.
NOTE:
Before using pumps and power packs from a different manufacturer, you must
always contact LUKAS or an authorised dealer.
The connection to the hydraulic pump providing the supply and to the hydraulic working
equipment is by hoses that are connected by couplings.
4.2 Hydraulic supply
ATTENTION!
Because of the back-pressure in the hoses, the maximum overall length of
the hoses from the power pack via the control table to the working equipment
must be 20 m (66 ft.). If necessary, it is, however, possible to use longer hoses.
However, each individual case must be agreed with LUKAS or with an authorised
dealer, in order to take account of the local conditions if necessary.