Nilfisk-ALTO SR1800C B-D - Manual (Page 57)

USER MANUAL
33014817(2)2006-06 A 7
Engine
The engine, a Diesel Lombardini Focs 1204 (SR 1800C D) or
motor Amre 48V (SR 1800C B) drives the hydraulic system
pumps.
Front wheels
– Pneumatic wheels
– Superelastic wheels
– They are independent, fastened to the frame by means
of a hub with built-in brake drum. The brakes are
hydraulic. The parking brake is mechanical.
Rear wheel
– Pneumatic wheel
– Superelastic wheel
– The rear wheel is the driving and steering wheel. The
steering is operated by a hydraulic cylinder connected to
the power steering. A hydrostatic variable delivery pump
with servoassisted control supplies a drive hydraulic
motor for forward and reverse gear.
Dashboard
Fitted on the upper part of the frame and under the steering
wheel, the dashboard houses the machine warning lights and
instrumentation.
Hydraulic system
In the first circuit a variable delivery pump feeds the drive
hydraulic motor (rear wheel). The forward and reverse drive
are adjusted by a hydraulic assist operated by a pedal. In the
second circuit a gear pump feeds the power steering and a
distributor which controls: the hopper lifting cylinder, the side
broom lifting and rotation cylinder, the skirt opening and
closing cylinder; the power steering controls the steering
cylinder.
In the third circuit the gear pump feeds a distributor which
controls the main broom lifting/lowering and rotation cylinder
and the fan hydraulic motor rotation.
All circuits are protected by suction filters and safety valves.
Electrical system
SR 1800C D: 12 V electrical system supplied by an alternator
operated by the engine. The circuits are protected by lamellar
fuses housed in a relevant fuse box.
SR 1800C B: power electrical system supplied by a 48 V
battery. The accessory electrical system is supplied by a 12
V power supply. The circuits are protected by lamellar fuses
housed in a relevant fuse box and by the power supply itself,
that cuts the voltage supply in case of short circuit and then
restarts it at circuit reset.
Stability
Machine stability depends on the conditions in which it is
used.
If the machine is used within the conditions of use specified in
the manual, it is stable. To this end the following tests were
carried out under the same conditions on a prototype identical
to the series model and no stability problems arose. The
conditions were:
Flat ground with good surface conditions:
–
Transfer maximum speed: 14 km/h
– Working speed: from 1 to 8 km/h
– Bending radius (maximum speed of 14 km/h): 3 m
– Bending radius (speed of 5 km/h): 0 m
On sloping ground with good surface conditions and
maximum longitudinal slope of 20%:
–
Bending radius (maximum speed of 5 km/h): 3 m
– Bending radius (speed of 1 km/h): 0 m
Maximum crossfall while in transfer: 15%
Maximum crossfall at 5 km/h: 20%
The tests were carried out with lowered and empty hopper.
For different conditions of use, the machine operator should
be able to assess the limits of the machine and should, in any
case, follow the indications laid down in the manual.
Information on brooms
Side brooms (2, Fig. E)
–
Polypropylene side broom
– Polypropylene and steel side broom
– Steel side broom
– Nylon side broom
Main brooms (12, Fig. E)
–
Natural fibre and polypropylene main broom
– Polypropylene main broom
– Polypropylene and steel main broom
– Nylon main broom
Brooms with different bristles can be supplied on request.
SAFETY SYSTEMS
The machine is provided with an operator's seat sensor that
stops the machine as soon as the operator leaves the seat.