* Emergency stop: see chapter 2.1
40
Fig. 14-3
14.3
ADJUSTING BLOCK
This contains the adjusting valves for roller speed and wrapping arm speed, together with
the two-stage start valve.
V11
Two-stage valve
(Electric cable no. 6.)
The speed is divided into two stages in order to make the wrapping arm start and stop
smoothly.
(This happens automatically.)
When the wrapping sequence starts, the valve is closed. This makes the oil from the
wrapping arm motor go through a nozzle that limits the speed. After about half a revolution
the two-stage valve opens and the oil flows outside this nozzle. This makes the wrapping
arm turn at full speed. The same thing happens when the arm is stopped, but in reverse
order.
V12
Volume-controlling valve for the wrapping arm
This regulates the oil volume and thereby the speed of the wrapping arm motor. This is
controlled by V12. Excess oil is directed onwards to V9.
V13
Volume-controlling valve for the rollers
This regulates the oil volume and thereby the speed of the roller motor. This is controlled
by V13. Excess oil is directed back to the tractor.
V14
Rotation stop valve (Additional equipment)
(CP 508-1.) (Electric cable no. 12.)
If there is a requirement to be able to stop the rotation of the rollers while the wrapping arm
continues to turn, a valve can be fitted here. (This can be useful on the 1504 machine when
wrapping rectangular bales.)
Standard machines have just a blind plug in this position.
V15
Check valve
This prevents oil flowing in from the collecting block.
