MTZ 1220.1, Operator'S Manual

Page: 97 / 244

MTZ 1220.1/1220.3 Section D. Construction and Operation
D49
In case of raising (“popping”) of the agri-
cultural implement when passing through
the pressed soil areas gashes, deepen
the agricultural implement by pressing the
handle (7) more downward. On releasing
the handle (7) it will return to the fixed po-
sition of lowering. When it will be done,
the agricultural implement reaches to
mode of the preliminary specified depth
set by the handle (4).
To raise the agricultural implement, shift
the handle (7) to the upper position.
When lifting the implement, the indicator
(5) lights up.
ATTENTION! To avoid the failure of the
HLL pump, it is prohibited to operate
the tractor unless the indicator (5) goes
out after lifting the implement.
It is necessary to know the following pe-
culiarities of starting the work with the
rear hitch linkage control system:
1. On starting the engine, the diagnostic
indicator (8) lights up to indicate the
serviceability and locking of the control
system;
2. To unlock the system, it is necessary
to set the handle (7) once to the work-
ing position (lifting or lowering). When
it will be done, the diagnostics indicator
(8) shall go out.
3. After unlocking the system when
switching on the same for the first time,
the automatic limitation of the speed of
lifting of the rear hitch linkage is pro-
vided for the safety reasons. Setting
the lever (7) to the “Lifting” position re-
peatedly disables the limitation of the
lifting speed.
4. The lifting and lowering of the rear
hitch linkage by means of the remote
control buttons on the fenders of the
rear wheels can be performed in any
control modes (the handles can be set
to arbitrary position). In this case, the
cab control system is blocked.
WARNING: When using the remote
control units, never stand between the
tractor and the implement ganged. To
avoid accidents, it is strictly prohibited
to use the buttons of mechanical
movement of the regulator solenoid
valves.
The work with the control system shall be
started in the sequence described in
paragraphs 2 and 3.
ATTENTION! To avoid more deepen-
ing of the agricultural implement, in
case of emergency stop of the tractor
the control handle (7) shall be set to the
“Neutral” position. After starting the
movement, shift the handle to the “low-
ering” position (the agricultural imple-
ment will e deepened to the preliminar-
ily set depth).
In addition to the above functions, the
electronic control system of the RHL is
provided with the “damping” mode (damp-
ing of oscillations of the mounted agricul-
tural implement in the transportation
mode).
The damping mode shall be enabled in
the following order:
• Set the handle (7) to the “lifting” posi-
tion (when it will be done, the RHL will
be lifted to the top position and disen-
gaged automatically);
• Press the “Dampind” button (9) (when
it will be done, the RHL will be lowered
from the top position by 3% from the
full stroke of the RHL).
ATTENTION!
1. The “Damping” mode can be only en-
abled, when the handle (7) is set to the
“Lifting” position.
2. When performing he field works
(ploughing, cultivation, etc.), the “Damp-
ing” mode shall be disabled.