Nilfisk RS 851 Betriebsanleitung Seite 137

25. If necessary, open the dust control system valves (10, 11, 12, Fig. E), considering the following:
• Suction pipe dust control system nozzle valve (10, Fig. E): Open it always, except when the fl oor to be cleaned is wet.
• This valve sends water also to the rear pipe dust control system nozzle (optional).
• Side broom dust control system nozzle valve (11, Fig. E): Open it when the fl oor is dry and dusty.
• 3rd broom dust control system nozzle valve (12, Fig. E): Open it when the fl oor is dry and dusty.
26. Turn on the dust control system water pump with the switch (27, Fig. D) according to the following procedure:
• When the switch is turned to the fi rst position, the nozzles sprinkle a medium quantity of water
(use it when there is little dust)
• When the switch is turned to the second position, the nozzles sprinkle the maximum quantity of water
(use it when there is a lot of dust)
CAUTION!
The machine is equipped with an automatic system that, when the operator is on the driver's seat (14, Fig.
E) and the water pump switch (27, Fig. D) is pressed, allows for water supply to the nozzles only if the broom
rotation is enabled.
If the operator is not on the driver's seat (14, Fig. E) to use the rear pipe, water can be supplied by the nozzles
using the water pump switch (27, Fig. D) only.
27. Disengage the parking brake with the lever (13, Fig. E).
28. Start sweeping, by keeping the hands on the steering wheel (28, Fig. D) and gradually pressing the pedal (26), on the front
side to move forward and on the rear side to move backward.
The drive speed can be adjusted from zero to maximum speed by increasing the pressure on the pedal.
While working, the machine picks up both light materials such as dust, paper, leaves, etc. and heavy materials such as stones,
bottles, etc.
WARNING!
The machine is equipped with a safety system that stops the movement (machine in neutral) and disables the
hydraulic functions controlled by the joysticks (15 and 36, Fig. D) when the operator is not on the driver's seat
(14, Fig. E) for more than 3 seconds. The movement and the hydraulic functions restarts automatically when the
operator returns on the driver's seat (14). Only the suction fan for the manual rear pipe, and the high-pressure
pump for the washing system can be used in these conditions.
NOTE
All brooms (19, 20, 21, Fig. G) can be lifted or lowered when the machine is moving.
The brooms rotate even when they are lifted.
Stopping the machine in working mode
29. To stop the machine release the pedal (26, Fig. D).
To stop the machine quickly, press also the brake pedal (31, Fig. D).
30. Engage the parking brake with the lever (13, Fig. E).
31. Turn off the dust control system water pump with the switch (27, Fig. D).
32. If open, close the dust control system valves (10, 11, 12, Fig. E).
33. Lift the 3rd broom by pushing the joystick (15, Fig. D) rearward.
34. If necessary, shift the 3rd broom arm to working mode, by moving the joystick (15, Fig. D) to left.
35. Stop the 3rd broom and side broom rotation with the switch (29, Fig. D).
NOTE
The machine is equipped with an automatic switch that stops the water supply to the nozzles when the broom rotation
has been stopped by pressing the switch (29, Fig. D) and the water supply has not been previously stopped by pressing
the switch (27).
36. Lift the suction inlet and side brooms by pressing the push-button (38, Fig. D).
37. Turn off the suction fan by bringing back the lever (8, Fig. E) in central position.
38. Turn the engine throttle lever (16, Fig. E) to idle, and hold it in this position for a few minutes to let the system stabilize.
39. Check that the hopper (7, Fig. G) is lowered and that the warning light (3, Fig. D) is off.
40. If necessary, bring the 3rd broom safety arm from the position (2, Fig. M) (disengaged) to the position (1) (engaged), by
engaging the tooth (3) on the bracket (4).
41. Turn off the engine, by turning the ignition key (24, Fig. D) counterclockwise, to the end of stroke, then remove it.
42. Engage the parking brake with the lever (13, Fig. E).
USER MANUAL
RS 851 33018305(3)2010-01 A
ENGLISH
21