User Manual
Table Of Contents
- Technical Systems Hydraulic System UNIWRAP
- Contents
- 1 Hydraulic circuit diagram
- 1.1 Hydraulic circuit diagram up to serial no.: 72600130
- 1.2 Hydraulic circuit diagram from machine no.: 72600131, with tipping cradle service shut-off valve (631)
- 1.3 Hydraulic circuit diagram from machine no.: 72600531, with film clamping cutters flow divider (769)
- 1.4 Hydraulic circuit diagram from serial no.: 72601047, with valve combination (630, 706, 769), without 3-stage restrictor (645)
- 1.5 Hydraulic circuit diagram from serial no.: 72601047, with valve combination (630, 706, 769), with 3-stage restrictor (645)
- 2 Pre-conditions for use
- 3 Valve block
- 4 Individual components
- 4.1 Input pressure balance (763)
- 4.2 Circulation shut-off valve (Y77-2)
- 4.3 Wrapping arm control unit (Y133)
- 4.4 Tipping cradle control unit (Y135 / Y136)
- 4.5 Wrapping table control unit (Y137 / Y138)
- 4.6 Clamping cutters control unit (Y139 / Y140)
- 4.7 Flow controller (630)
- 4.8 Pressure relief valve (706)
- 4.9 Wrapping arm motor (234)
- 4.10 Wrapping table motor (235)
- 4.11 Tipping cradle service shut-off valve (631)
- 4.12 Film clamping cutters hydraulic cylinder (374)
- 4.13 Film clamping cutters flow divider (769)
- 4.14 Wrapping arm motor valve block (4)
- 4.15 3-stage restrictor
- 4.16 Valve combination (7)
- 4.17 Manifold (8)
- 0293 522.0
TIC UNIWRAP Hydraulic System
11/04 UNI-h-Kap2 29
2.2
Connection to tractor
hydraulic system
Description of function: 1/2
The attachment can be connected to any tractor hydraulic system
available on the market.
Connection to tractors with
constant-flow hydraulic
system
The quick release coupling 1 is connected to a control unit port of the
tractor with adjustable oil flow.
This control unit provides oil supply for the attachment and is adjusted to
a constant volume flow of Q
max
= 35 to 50 l/min.
The system screw 634 is turned out up to the stop so that the input
pressure balance 763 is operative.
The quick release coupling 2 is in general connected to the pressureless
return line T of the tractor.
If a pressureless return line is not allowed in continuous operation (e.g.
because lubrication of the tractor gearbox is not guaranteed), a double-
acting control unit can be used for supplying oil to the attachment.
In this case, the quick release coupling 1 is connected to port A (feed) and
quick release coupling 2 to port B (return) of the corresponding tractor
control valve.
Adjust the volume flow to Q
max
= 35 to 50 l/min; please refer also to the
tractor's Operating Manual (e.g. "Continuous operation of hydraulic
motors").
The LS connection (LS, working hydraulics signal) is not used here.
If the tractor is not provided with a flow-adjustable control unit, the volume
flow must not exceed 35 to 50 l/min.
Connection to tractors with
constant-pressure hydraulic
system
The quick release coupling 1 is connected to a control unit port of the
tractor with adjustable oil flow.
This control unit provides oil supply for the attachment and is adjusted to
an oil flow of Q
max
= 35 to 50 l/min.
The system screw 634 is turned in up to the stop so that the input
pressure balance 763 is blocked.
The tractor's hydraulic pump is shut down when the system pressure has
been reached.
The quick release coupling 2 is connected to port T (pressureless return
line) of the tractor.
The LS connection (LS, working hydraulics signal) is not used here.