Primera BAG0175.3
5.21 Distributor head and tramline circuit
In the distributor head (Fig. 64/1) the seed or
fertiliser is distributed uniformly over all the sow-
ing coulters. The number of distributor heads
depends on the machine working width. A dosing
unit always supplies one distributor head.
The tramline circuit in the distributor head allows
the creation of tramlines at presettable distances
on the field. To set the different tramline distanc-
es, appropriate tramline rhythms have to be en-
tered into the on-board computer.
52
When creating the tramlines:
• the tramline control system on the distribu-
tor head uses sliders (Fig. 65
seed feeding lines to the seed lines
(Fig. 65/2) of the tramline coulters
• The tramline coulters do not deposit any
seeds on the ground.
The seed supply to the tramline coulters is inter-
rupted as soon as the electric motor
(Fig. 65/3) closes the appropriate seed tubes
(Fig. 65/2) in the distributor head.
Upon creating a tramline the tramline counter
indicates the number "0" on the on-board com-
puter. The seed volume, which is reduced when
creating a tramline, can be set.
A sensor (Fig. 65/4) checks whether the sliders
(Fig. 65/1), which open and close the seed line
tubes (Fig. 65/2), are working properly.
If the setting is wrong, the on-board computer
emits an alarm.
53