Michco sc8000, Руководство по обслуживанию

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Squeegee System 186 Service Manual – SC8000
Squeegee System Hydraulic Diagrams
Squeegee Down
When the main scrub or recovery system is
actuated, the
Squeegee Down Solenoid Valve L2
energizes to direct the oil to the top port on the
Squeegee Lift Cylinder
. This extends the
Squeegee
Lift Cylinder
and lowers the squeegee to the
floor. The oil discharged from the
Squeegee Lift
Cylinder
returns to the
Reservoir
.
The hydraulic pressure to lift and lower the
squeegee is created by:
• The 250 psi propulsion piston pump charge
pressure relief valve, and,
• The back pressure created by the return flow
through the cooler and filter en route to the
piston pump charge port.
Squeegee Up
To retract the squeegee (scrub off, recovery off,
machine in reverse), the
Squeegee Up Solenoid
Valve L3
energizes to direct the oil to the
bottom port on the
Squeegee Lift Cylinder
. This
retracts the
Squeegee Lift Cylinder
and raises the
squeegee up off of the floor. The oil discharged
from the
Squeegee Lift Cylinder
returns to the
Reservoir
.
Reservoir
Squeegee Down
Solenoid Valve L2
250 psi Back
Pressure
Squeegee
Lift Cylinder
Squeegee
Down
Squeegee Up
Solenoid Valve L3
Squeegee Up
Squeegee
Lift Cylinder
Reservoir
250 psi Back
Pressure