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-Kap4 83
Key to diagram:
374 Film clamping cutters hydraulic cylinder
628 Non-return valve
A Ram space port
B Rod space port
K Ram
R Ring
Description of function:
The hydraulic cylinders are connected in series.
The film cutter cylinders extend when hydraulic pressure is applied at
port A.
The film cutter cylinders retract when hydraulic pressure is applied at
port B.
Non-return valves (628) The non-return valves 628 at the bottom of the rams are not opened
mechanically when the hydraulic cylinders are retracted.
Bleeding the hydraulic
cylinders
When the cylinders are extended, the rings R open the non-return valves
628 at the top of the rams.
In this position (film clamping cutters are open), the hydraulic oil can flow
from A to B.
This position can be used for bleeding the cylinders.