Lukas LH2 - Manual (Page 9)

9
Functional description 5.
5.1 Base pump
5.2 Adapter blocks
Adapter kit Ref. no. Weight
[kg]
Function / application
Base plate 841297410 0,3 Add-on of a second return
port (G1/4”) on the pump.
The base plate is a basic
requirement to mount valve
blocks and oil distributors
on the pump.
4/3-way valve 841297310 1,5 Control valve to extend
and retract double-acting
cylinders / hydraulic
devices.
All LUKAS hand pumps of this series are two-speed, i.e. they have two operating speeds:
• A high speed in the low pressure range (LP) for fast extension of the cylinder or device
while unloaded
• A low speed in the high pressure range (HP) for controlled extension of the cylinder or
device while loaded
The switch from low pressure (LP) to high pressure (HP) is automatic at the factory setting
for changeover pressure (see chapter "Technical Data").
A pressure port "P" with a G1/4" thread and a return port "T" with an M10 thread (usually
closed) are directly available as ports on the pump.
With the basic pump it’s only possible to operate single-acting cylinders or devices.
To use other connections or double-acting cylinders or hydraulic devices, you will have to
mount adapter blocks (see chapter “adapter blocks”.
In some of the offered LUKAS hand pumps this adapter blocks are part of the shipment
and they are already mounted.