Nilfisk-Advance America RS 501 Manuel D’Utilisation

33015500(3)2008-02

The hydraulic system consists of three independent circuits, supplied by one tank.

The fi rst circuit is supplied by a variable delivery pump, activated by the diesel engine. This pump activates two drive system 
motors, which operate on the front wheels.

The forward and reverse drive speed is adjusted by the drive pedal, which is connected to the pump.
The second circuit is supplied by a gear pump, activated by the diesel engine. This pump activates the suction fan motor by means
of the control valve assembly.

The third circuit is supplied by a gear pump with priority valve, activated by the diesel engine. This pumps, by means of the control
valve assembly, performs the following functions:

Side broom motor activation
Hopper lifting and dumping
Suction inlet lifting and moving
Rear wheel control hydraulic cylinder activation (by means of the oil taken from the priority valve)

All circuits are protected by suction fi lters and safety valves.

NOTE
The hydraulic system hoses are DIN type.

Hydraulic system oil tank
Drain fi lter
Suction fi lter
Suction fi lter
Drive system pump
Diesel engine
Left drive system motor
Control valve assembly
Right drive system motor
Skirt cylinder
Hopper lifting cylinder
Hand pump
Right side broom motor
Left side broom motor
Hydraulic system oil cooler
Parachute valve
Suction inlet and broom lifting cylinder
Check valve
Power steering
Flow separator (priority valve)
Accessory and steering system pump
Suction fan pump
Control valve assembly
Solenoid valve
Suction fan motor
Power steering cylinder
Drive pedal assist
Oil fi lter
Drive system pump oil fi lter
High-pressure washing system pump (*)
Flow regulator (*)
Hydraulic system oil fi ller plug
Hydraulic system oil level indicator

(*) Optional for some countries.

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