Challenger Techstar CVT MT525B Series, Operators Instruction Book

Page: 211 / 248

7 . ACCESSORIES AND OPTIONS
7.73 Challenger MT500B EU
7
7.13.2.4 - Setting furrow start length
(Implement example: front roller with combined rear seed-
er).
To ensure that the rear implement enters the soil at a cer-
tain distance after entry of the front implement, the DA-
TATRONIC must know the length X (15 Fig. 172) between
these two implements.
• Press the key
«
4
when the window (Fig. 173) is open.
The furrow start length is displayed in red (16 Fig. 173).
NOTE: On b/w screens, these values are displayed in
reverse video.
• Adjust the length X by rotating the encoder and validate
by pressing the latter. The length is displayed in black
inside the white and grey box, and the front linkage fur-
row start extra-lowering value is displayed in red (17 Fig.
173).
NOTE: On b/w screens, these values are displayed in
reverse video.
7.13.2.5 - Setting furrow start front linkage extra-low-
ering
Definition (Fig. 174):
When the rear linkage Lowering control is activated, the
front linkage is lowered (18), which ballasts the front of the
tractor (19). For this reason, as long as the rear implement
is not on the ground, the front implement does not work at
the previously set depth (see paragraph 7.8.2.2 Memoris-
ing high and low linkage positions). To ensure the front im-
plement works at the correct depth even when the rear
implement is not lowered to the ground, a front linkage ex-
tra-lowering depth can be set to avoid the above phenom-
enon. Therefore, when the rear linkage lowering control is
then activated, the front linkage working position is slightly
higher during the furrow start phase. This function remains
active even while the complete furrow start length has not
yet been run.
NOTE: To set the front linkage furrow start extra-lower-
ing value, the furrow start length must first be set (see
previous paragraph).
Adjustment :
• When the window (Fig. 173) is open, press the key
«
4
.
The furrow start length is displayed in red. If this value is
suitable, validate by pressing the encoder. The front link-
age extra-lowering value (20 Fig. 175) is displayed in red.
NOTE: On b/w screens, these values are displayed in
reverse video.
NOTE: If the furrow start length must be modified, see
the previous paragraph.
• Validate by pressing the encoder. The value is displayed
in black.
Y
X
Z3A-946-08-04-B
Fig. 172
15
1920
42.0
100% 100%
0% 0% 21%
77%
32%
83%
100%
6.0 6.0
6.0
100%
6.0
Z3A-947-08-04-B
Fig. 173
m
m
m
m
16
17
Y
Z3A-1327-12-04
Fig. 174
18
19