Duncan Enviro 3000e, Owner'S Manual

Page: 15 / 130

13
Pt. No. 67303
Issue 0806
Operation
General Operation Guidelines
1 Use a sufficiently powerful tractor which is heavy enough to tow
the drill safely.
2 Operate the drill at a speed of 6-12 km/hr (4-8 mph).
In stoney and uneven ground conditions a lower speed is more
appropriate.
3 Check that the drill is level during calibration and while seeding.
4 Adjust the individual depth wheels to the required sowing depth.
5 Check tyre pressure before seeding. Refer Page 3.
6 Double check seed rates before seeding.
7 Do not turn with discs in the ground. When making any turns,
make sure the drill is fully raised out of the ground.
8 Raise the drill out of the ground before backing up.
9 After prolonged storage, check to see that all drive mechanisms and
hydraulic equipment are functioning correctly. Check that the seed
tubes are not perished or blocked.
Sowing Speed
Typical travel speeds when sowing range from 6-12 km/hr in
good conditions. In stoney and uneven ground conditions a lower
speed is recommended to minimise rapid part deterioration.
Sowing too fast can result in:
1 Poor contour following and uneven sowing depth.
2 Impact damage to:
a Ground engaging components.
b Bearings, housings and axles.
c Fasteners & structural components.
3 More extreme conditions will result in greater vibration and
uneven seed flow at low seeding rates.
Front Coulter & Dragbar Loading
The height of the drill when in the drilling position is determined
by the laden weight and the number and size of the depth collars
on the master cylinder shaft. Refer Fig 6/1. This in turn
determines the pressure on the discs.
In very soft conditions where downward pressure may alter seed
depth, there may be a compromise between downward pressure
and total contour following abilities.
Magnetic Cut-out Sensor
To enable seeding to start and stop when coulters are lowered
into and lifted out of the ground, a magnetic cut-out sensor is
mounted on the RH wheel arm hydraulic ram. To minimise seed
wastage during raising and lowering the coulters, the sensor
should be adjusted up or down on the ram to suit the sowing
depth and ground conditions. Moving the sensor down the ram
stops the seeding later and starts the seeding earlier, and vice
versa. The sensor can be moved by slackening the metal hose
clip (Fig 6/2). It is better to experiment with the sensor position for
various depth settings to get the response required.
Fig 6
1
2