208Service Manual – SC5000
40 - Recovery System
Functional Description
The recovery system extracts wastewater from the oor collected by the squeegee, and deposits it into the
on-board recovery tank.
Vacuum Motor and Recovery Tank
The SC5000 machine has one standard vacuum motor, plus an optional second vacuum motor for higher
vacuum draw. The vacuum motor generates airow through the recovery tank and suction hose to the
squeegee. The high velocity air at the squeegee pulls the wastewater off the oor and up through the suction
hose. As the mixture of air and water enters the recovery tank, the airow slows down due to the larger
space, and the water drops out of the airow and into the tank.
The airow passes through an inlet screen to prevent debris from entering the impeller of the vacuum motor.
The exhaust air is expelled through ducting in the machine toward the oor so it can be dispersed without
blowing directly on the operator or the work environment.
Operational Mode Prerequisites
Before the main controller can activate any of the operational modes, it must rst check that the appropriate
prerequisites are met.
• Recovery System Outputs
– Vac motors – Recovery mode (Seat switch closed upon entry) or Squeegee Actuator M6
◦ No recovery system fault (vac motors and squeegee)
◦ Throttle command not equal to zero (and not timed out)
◦ No Estop inhibit
◦ No impact lockout inhibit
◦ No low voltage cut out inhibit (second stage)
◦ No RTF inhibit
◦ Note M5 also requires Vacuum option set to dual in conguration menu
– Vac motors M4 and M5 – Wand mode (seat switch open upon entry) or Squeegee Actuator M6
◦ No recovery system fault (vac motors and squeegee)
◦ No Estop inhibit
◦ No impact lockout inhibit
◦ No low voltage cut out inhibit (second stage)
◦ No RTF inhibit
◦ Note M5 also requires Vacuum option set to dual in the conguration menu
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