Advance acoustic 56514925, Service Manual

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Dust Control System 44 Service Manual – Advance 7765 / Nilfisk CR1500
Dust Control Motor Valves
The
Main Broom Solenoid (2)
on
the
Main Control Valve
controls the
supply of hydraulic oil to the main
broom and dust control vacuum
fan motors.
When the
Main Broom Solenoid
(2)
is energized it closes to direct
the oil flow through
Port 1
on
the
Main Control Valve
. The oil is
directed through the main broom
motor and dust control motor,
then returns to
Port 2
on the
Main
Control Valve
.
Machines equipped with the Wet
Sweep Bypass Option have an
additional
Dust Control Solenoid
(1)
valve. The Wet Sweep Bypass
Option allows you to operate the
main broom with the dust control
motor off.
• When the
Dust Control Solenoid
(1)
valve is de-energized (open)
it allows the hydraulic oil to
flow from the discharge side of
the main broom motor, through
the
Dust Control Solenoid (1)
valve and to
Port 2
on the
Main
Control Valve
, bypassing the
dust control motor.
• When the
Dust Control Solenoid
(1)
is energized it closes to
direct the oil flow from the
main broom motor through the
dust control motor. The oil then
returns to
Port 2
on the
Main
Control Valve
.
Oil from Port 1
to Main Broom and Dust
Control Motors
Oil From Main Broom
and Dust Control
Motors to Port 2
Main
Control Valve
Main Broom
Solenoid (2)
To Pressure Side
of Dust Control Motor
To Discharge Side of
Dust Control Motor
To Port 2 on
Main Control Valve
From Main
Broom Motor
Dust
Control
Solenoid (1)