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Schwarze Street Sweepers A7000

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Product Number: A-7000

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The Schwarze A7000 Street Sweeper is a heavy-duty, chassis-mounted, regenerative air sweeper with an 8.4 cubic yard hopper. Its basic design has had over 10 years of successful operation throughout the United States and around the world. As one of the largest, most powerful air sweepers in existence, the Schwarze A7000 sweeper is an ideal choice for use in a wide range of demanding road sweeping applications.

The A7000's blower system generates a high velocity air column, which is propelled into the top of the sweeping head through a 14-inch blast tube. The air is first pressurized in the upper chamber of the sweeping head, then expelled into the head's lower chamber through what is called a "blast orifice". This is a slot in the sweeping head that forces the air against the pavement at an angle, creating a "peeling" or "knifing" effect. This high volume air blast loosens the debris from the pavement surface, then transports it across the width of the sweeping head and lifts it into the containment hopper via a 14-inch suction tube.

This is a highly efficient system which ensures that even hard-to-reach particles hidden within pavement cracks and irregularities are removed, including the "PM-10 fines" known to contain a high percentage of heavy metals, phosphates and other pollutants. Double-belted curtains on the front and rear of the sweeping head contain the circulating air flow to assure debris transfer with minimal escape of fugitive dust.

In contrast to mechanical broom sweepers, the A7000 sweeper collects the micron-sized contaminants that accumulate on roads and streets. Recent studies emphasize the importance of removing these "PM-10 fines" due to the non-point source pollutants they contribute to stormwater runoff. Using the regenerative air Schwarze A7000 sweeper results in a cleaner street and a cleaner environment.

In addition the A7000 sweeper has as option the Mechani-Pneumatic® Powerhood. The central feature of this Mechani-Pneumatic® Powerhood is a windrowing mechanical broom which is positioned ahead of the blast orifice of the sweeping head, allowing for better cleaning action of both heavy materials and the fines which are known to be trapped under caked debris.

General Specifications:
Sweeping Width (2 gutter brooms) ........... 138" (3,505 mm)
Sweeping Width (1 gutter broom) ............. 114" (2,896 mm)
Sweeping Width (pickup head only) ............ 90" (2,286 mm)
Travel Width ........................................................... 96 inches
Height ................................................................... 120 inches
Hopper Lifting Capacity ......................................... 10,000 lb.
Minimum GVWR ..................................................... 26,000 lb.
Wheelbase ............................................. Chassis-dependent

Chassis:
A selected truck chassis is provided to give adequate ratings of
all components compatible with hopper capacity. Option of cab
over or conventional type. Turning radius and wheelbase
dependent on chassis and hopper size. Consult factory for
detailed requirements.

Hopper:
Volumetric Capacity ........................... 8.4 cu. yds. (6.4 m3)
Dump Angle ...................................................................... 53°
Floor Angle ......................................................................... 3°
Dust Separator .............................. Self-cleaning centrifugal
Lifting ............................................. Twin hydraulic cylinders
Hopper Dump Door ................ Open/close/lock hydraulically
Inspection Doors ............... One on each side of the hopper
Material ............................... 10-gauge steel with 3/16" floor
Safety Prop ................... Dual steel bars located under body

Blower System:
Drive .................... Direct via a 5-groove, banded power belt
Construction ................................... Abrasion resistant steel
Housing Liner ..................................... Bolt-in corded rubber
Mounting .......................................... 2 regreasable bearings
Vacuum Enhancer ......................... For heavy / light material

Sweeping Head:
Type ....................... Dual chambered, full-width blast orifice
Operating Direction ............................. Forward and reverse
Suspension ............................... Adjustable spring-balanced
Length ........................................................... 90" (2,286 mm)
Pressure Hose Diameter .............................. 14" (355.6 mm)
Suction Hose Diameter ................................. 14" (355.6 mm)
Hose Construction ........................................... 3/8" (9.5 mm)
wire-reinforced molded rubber
Sweeping Head Area .................. 3,240 sq. in. (20,903 cm2)
Controls ....................................... Hydraulic raise and lower
Skids ..................................... Double wide tungsten carbide
Construction ................................... Abrasion-resistant steel
inlet and outlet transitions


Electrical System:
Voltage ....................................................................... 12 volt
Auxiliary-Engine Alternator ................................ 65 amperes
Protection .................................. Re-settable circuit breakers

Water System:
Tank Capacity ................................... 250 gallons (946 liters)
Construction ..................................................... polyethylene
Pump .................................. Roller powered by electric motor
Controls ........................................................................ In-cab
Filter .......................................... 200 mesh screen, cleanable
Fill Diameter .................................................... 2.5" (63.5" mm)
Fill Hose .................. 25 ft. w/ 2.5-inch NST hydrant coupling
Mounting ............................................................... Removable
Low-Water Warning .......................................... Indicator light

Gutter Broom(s):
Type ......................................... 5-segment plastic disposable
Location .............. Right and left, forward of sweeping head
Diameter ......................................................... 44" (1,118 mm)
Drive ........................ Hydraulic torque motor with relief valve
Controls ....................................................................... In-cab
Broom Material ........................................ Vertical steel digger
Mounting ................................................... Trailing arm design
Suspension ........................................ Torque-sensing spring
Wear Adjustment .................................................... Automatic
Speed .............................................. Variable, non-reversing
Impact Protection .......................................................... Spring
Tilt Angle Adjustment .................. Manual or remote (optional)

Hydraulic System:
Pump Capacity ..................................... 13.0 gpm (49 L / min.)
Drive ...................................................................... Direct gear
Maximum Pressure ................................. 2,500 PSI (172 bar.)
Reservoir ................................................................ 25 gallons
Filter ........................................................... 10-micron spin-on
Controls ........................................................................ In-cab
Valve Banks ............................... Electrical directional valves
Protection .............................................. Pressure relief valve

Auxiliary Hydraulic System:
Type ............................... Gear type, driven by electric motor
Function ............. Raise / lower hopper, open / close hopper
door, raise brooms and sweeping head.

Paint:
One coat of sealer primer and 2 coats of DuPont Imron 5000 ®
polyurethane in standard white color.

 
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