Great Plains P16229 Serial No 18007975 2009 - Manual (Page 20)

Hydraulic Reset Flatliner
Operating Instructions
20
4.5 Operation
During work the Hydraulic Reset Flatliner
should run reasonably level to achieve
consistent working effect of all tines. It is
important to set the machine up correctly in
order to achieve an efficient and worthwhile
operation. Although the Hydraulic Reset
Flatliner can work down to 300mm (12 inches)
this does not mean that running at this depth
is always worthwhile, taking time to identify
where there is a problem in soil profile and
working to the minimum depth to eliminate
this could save a lot of otherwise wasted
diesel and time. It is also very important not
4. Adjustment / Operation
4.4 Double Disc Roller
The standard DD600 roller is made up of
individual Double Disc (patented) Ring
segments.
The DD rings are designed to consolidate the
soil whilst cutting and crushing any clods.
Even in heavy, wet soils it can easily be
operated with minimal blockages occurring.
to operate below critical depth of the tine, this
is where the tine no longer produces upward
movement of soil and effectively behaves as
a mole plough, therefore not producing the
shattering effect desired.
In work it is permissible to use the tine circuit
to raise the tines if draft requires reduction,
allowing the mainframe to remain fully lowered
keeping the surface pressing effect at its
maximum. As such, set the linkage to
minimum draft control, fully down.
The roll unit serves two functions; it conserves
soil moisture, breaking up any clods left by
the tines and limits the operating depth of the
machine. The pressure that may be exerted
upon the clods by the roll is limited by the
weight of the implement and the downward
tine thrust. This downward thrust can be
increased by fitting wider wings, or slightly
increasing the angle of the points and wings
(using the tractor linkage), and by minimising
any draft control setting on the tractor. This is
the first area to be investigated if more roll
pressure should be required. Draft control can
also inhibit initial penetration if the implement
is lowered too quickly on the move into work.
The rapid increase in draft is sensed by the
tractor, which then inhibits further penetration.
The solution is to gradually lead the implement
into work, thereby not imposing a rapid
increase in pulling force.
When off hitching, adjust the tine height to
support the mainframe evenly between tine
points and rear roller for maximum stability.
Operate both circuits in float prior to
decoupling.
Fig. 4.03: Double Disc Roll