MIL-S-28566C(YD)
shall be driven by the sweeper engine and shall
have adequate capacity to
provide satisfactory operation of the sweeper.
A 10 micron paper element
filter of the throwaway type shall be built in
the return line. A manually
operated hand pump shall be provided to operate
the system when the engine is
not running.
3.9.8 Blower assembly. The blower assembly shall be a single inlet,
double outlet, centrifugal blower rated at not less than 10,000 cubic feet per
minute at manufacturer's recommended rpm. The blower assembly shall be
mounted forward of the engine and directly the rear of the broom assembly to
provide immediate air discharge across the broomed area.
3.9.9 Air discharge. Two air discharge ducts be provided that can be raised
6 inches to provide ground clearance in the traveling position. During the
sweeping operation, one of the nozzles shall always be in line with the leading
edge of the broom while the opposite discharge duct directs the air toward the
trailing edge or window. The nozzles shall be positioned so that the air blast
is 90° to the line of travel and in the direction of the broom discharge. High
torque, low speed, hydraulic motors shall rotate nozzles through 180° when the
broom is swung to the opposite working side. Hinged doors at the nozzle opening
shall be provided to shut off the airflow when required. By means of a selector
valve, it shall be possible to reverse the rotation of the nozzles relative to
the broom. It shall be possible to close one nozzle to divert full airflow to
the outside nozzle permitting high air blast for runway light cleaning. The air
nozzles shall be designed to provide air discharge velocity of at least 200 mph
effective on the swept area. Air discharge ducts, baffled to direct the flow of
air and meeting the requirements and performance specified below, are acceptable
in lieu of discharge nozzles.
3.9.10 Remote controls. A weatherproof remote control box for mounting in
the cab of the towing vehicle shall be provided. The box shall contain a
tachometer, emergency engine stop button, engine speed control switch, and a
four-way toggle switch controlling the position of the broom and air nozzles.
The panel or box shall have a handle and shall be so attached to a flexible
electric cable that is can be easily placed or removed from the cab. The
remote control cable shall have a breakaway connection at the towbar. The
remote control box and cable shall be stored on the sweeper when not in use.
3.9.11 Lighting.
The sweeper shall be equipped with the following
lighting equipment:
a.
Taillights, clearance lights, and reflectors in accordance with DoT
Federal Motor Carrier Safety Regulations. Stoplights shall be
installed high on the rear air ducts.
b.
Floodlight(s) mounted at the front of the sweeper to light the area
being swept and the air discharge nozzle area during runway light
cleaning. This lighting shall be effective regardless of sweeping
position.
c.
A warning light of the rotating or flasher type shall be installed on
the highest point of the sweeper and shall be visible 360° around
the sweeper.
3.9.12
Lubrication. Unless otherwise specified (see 6.2), means for
lubrication shall be in accordance with the manufacturer's standard practice.
Check the source to verify that 7
this is the current version before use.
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