MacDon DWA for M Series - Manual (Page 27)

OPERATION
169216 Revision E 25
Operating recommendations
15, 16, 18, and 20 ft. Headers: On the first
pass, the side delivery system is raised and crop
is deposited between windrower wheels. On the
return pass, the side delivery system is lowered
and crop is deposited outside of the windrower
wheels to the right, beside the previously laid
windrow. Position of the crop can be adjusted by
using the side deflectors on the forming shields
when depositing the crop in the center and by
varying the draper speed when depositing the
crop to the side. The faster the draper speed is
set, the farther the crop will be delivered to
the side.
25 and 30 ft. Headers: The side delivery
system is lowered at all times. Crop is deposited
outside the windrower wheels and laid beside
the previously deposited windrow on return
pass. Position of the crop can be adjusted by
varying the draper speed when depositing the
crop to the side. One can also raise the side
delivery system and center deliver all the time.
Operating recommendations with R80 Rotary
Disc Header:
The conditioner rolls on an R80 Rotary Disc
Header are further ahead than all other headers;
therefore delivering light crop from the
conditioner rolls to the side delivery deck may
require special attention:
There are three areas that can affect the crop
flow to the deck:
1. Crop flow from the cutterbar to the rolls.
a. Header cut width must be kept as full as
possible on the right hand side. Any less
than 75% may have adverse effects on
feeding.
b. Feed plates must be installed for
appropriate crop. They are required for
forage but not for alfalfa. (See R80
Operator’s Manual.)
c. Higher ground speeds will usually result
in better crop flow from the conditioner
rolls to the deck. Ground speed should
be a minimum of 6 mph (10 km/h) for
light crops.
d. Disc speed must be in recommended
range for specific crop/yield. (See R80
Operator’s Manual.)
2. Crop flow from rolls to forming shield.
a. Rear baffle on the R80 header should
be in the upmost position. However it
may need to be lower for center
windrowing.
b. If there are fins on the rear baffle,
remove them to prevent interference
with the crop flow.
c. Header angle: The steeper the header
angle, the higher the arc of the crop
trajectory will be. Header angle should
be set such that the crop is projected at
a maximum arc height without excessive
contact with the top forming shield. It
may be possible to shoot crop above the
forming shield with extreme header
angle and rear baffle positions. In rocky
conditions where DWA is necessary, a
high skid shoe kit or adjustment to
gauge rollers may be required to
achieve correct stubble height and also
maintain crop trajectory.
d. Header height: affects the header angle.
Target should be to have the lift linkage
fully down at all times.
e. The roll gap should be small enough to
properly grab the crop and throw it.
f. The roll speed which is mechanically
tied to the disc speed can affect how
fast the crop gets projected. This again
should be in the recommended range.
3. Forming shield settings:
a. Make sure forming shield (B) is installed
correctly with bracket (A).
b. Buildup of sticky crop residue on
deflector sliding surfaces should be
periodically removed.
c. See “Conditioner Forming Shield
Position” on previous page.
A
B