FARMTECH FDD 3000, Manual

Page: 39 / 105

B.2. Hydraulic and Electrical Connections
Your grain drill has 3 hydraulic lifts in total (1 piece) on
the depth adjusting mechanism and (2 pieces) on the
hydraulic marker system and these lifts must be
connected with tractor before operation.
Minimum 3 drive assemblies (6 hydraulic outlets) are
required on the tractor for the hydraulic systems on
your grain drill to function properly.
The depth adjustment lift is double-driven. Thus, it must
be connected to the outlets of the same drive assembly
on the tractor (functioning together as inlet-outlet).
Depth Adjustment Lift
Hydraulic marker lifts are single-driven and can be
controlled individually. Thus, each marker must be
connected to a separate hydraulic outlet.
When there is no sufficient number of outlets on tractor
(e.g. in tractors having 4 hydraulic outlets), marker lifts
can be connected to the same drive assembly. However,
in such a connection it is not possible to control the right
and left markers independently. When a marker is lifted
the other one is lowered automatically.
However, both discs must be lifted in order to protect the
marker that is in contact with soil against damages and
also to prevent the cultivated areas to be impaired in
cushioning passages.
Also, in the drills with tracking system, triggering is made
by means of the marker system to count the number of
passage rows. Using each marker lift independently is
essential for the tracking system to perform counting
properly and to leave tracks at correct points.
Marker
Lift