tellefsdal AUTO WRAP 1200 EH, Руководство пользователя

Страница: 30 / 41

Fig. 14-2
14.3 The hydraulic system is equipped with a safety valve, (S1), which is preset to 185 bar. It opens for
the oil circuit to tank if max. pressure is exceeded. This valve is attached to the main valve block.
See fig. 14-2.
14.4 There is also a safety valve, (S2), on the return side in the main block. It works like an "emergency
outlet valve", and lets the oil out on the ground if the return line should be blocked up. This valve
is preset to 105 bar, and the valve's mission is to prevent that it by an accident can come high
pressure into the return side of the wrapping arm motor.
AUTO WRAP 1200 EH
NUMERICAL ORDER OF THE MAGNET VALVES
The numbers of the magnet valves are identical with the
corresponding numbers on the electric leaders.
Valve for CUTTER = Valve no. 1 - 2
Valve for ROLLERS IN / OUT = Valve no. 3 - 4
Valve for rotating the rollers when
ROLLERS OUT is operated
= Valve no. 44
Valve for wrapping arm, ½ speed = Valve no. 5
Valve for wrapping arm, full speed = Valve no. 6
Master valve = Valve no. 7
"Closed centre" valve = Valve no. 8
Piloted non-return valve for CUTTER = Valve no. 9
Main pressure limit valve = Valve S1
Safety limit valve = Valve S2
Power limit valve for wrapping arm = Valve S3
Stop limit valve for wrapping arm = Valve S4
Pressure limit valve for left roller motor = Valve S5
* Emergency stop: see chapter 2.1
34
Fig. 14-3