7 . ACCESSORIES AND OPTIONS
7.81
Challenger MT500B EU
7
NOTE: The plough depth wheel partial lowering value
(e.g.: 85%) corresponds to 85% of the maximum depth
wheel height.
7.13.3.6 - Setting furrow end length
As for the furrow start, the DATATRONIC needs to know
the length between the first and last shares.
NOTE: The furrow start and end lengths may differ,
depending on the linkage and plough depth wheel low-
ering and lifting speeds.
• Press the key
«
5
when the window (Fig. 197) is open.
The furrow end length is displayed in red (53 Fig. 197).
NOTE: On b/w screens, these values are displayed in
reverse video.
• Adjust the length by rotating the encoder and validate by
pressing the latter. The value is displayed in black and
the furrow end depth wheel partial lifting value is dis-
played in red (54 Fig. 197).
• To return to the previous menu, press the ESC key.
7.13.3.7 - Setting furrow end depth wheel partial lift-
ing
Definition (Fig. 198):
At the end of the furrow, when the tractor linkage lifts (55),
the rear of the plough tends to tip. Indeed, the latter pivots
around the plough wheel. Thus, the last shares operate be-
low the normal ploughing limit (56).
To avoid this phenomenon, the DATATRONIC partially lifts
the plough depth wheel during the furrow end phase. This
value therefore needs to be set.
NOTE: To set the plough depth wheel furrow end par-
tial lifting value, first define the furrow end length (53
Fig. 197).
Settings:
• When the depth wheel partial lifting value is displayed in
red (54 Fig. 197), adjust it by rotating the encoder.
• Validate by pressing the encoder. The value is displayed
in black.
NOTE: To return to the previous menu, press the ESC
key.
79%68%
85%
27%
27%
4.5
100%
100%
6.0
1920
42.0
68% 79%
27% 32%
4.5
85%
6.0
Z3A-981-08-04-B
Fig. 197
m
m
m
m
53
54
Z3A-970-08-04
Fig. 198
55
56
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