Squeegee System156Service Manual
SC6500|Squeegee Lift Actuator Reverse FunctionThe squeegee actuator operates in the automatic mode when scrubbing and will automatically lower toits normal operating position when the scrub system is enabled. To prevent squeegee blade damage andexcessive wear, the Squeegee Actuator M3 will lift the squeegee tool from the floor when the machine isoperated in reverse.To get the squeegee tool to lift in reverse, the drive pedal must be moved off its neutral or forward position,which triggers the needed reverse direction output from the A1 Speed Controller to the A2 Control BoardAssembly. The A2 Control Board Assembly sends voltage to the Squeegee Actuator M3 at the appropriatepolarity, and for a specified time, to lift the squeegee to a position that is half the upward distance that thesqueegee moves when the scrub system is switched off.Moving the drive pedal back to the neutral/forward switches off the reverse direction output from the A1Speed Controller to the A2 Control Board Assembly. The A2 Control Board Assembly then sends voltage to theSqueegee Actuator M3 at the appropriate polarity to lower the squeegee tool back onto the floor.Component LocationsThe Squeegee Assembly isattached to the Squeegee MountWeldment, which is attached to theSqueegee Lift Arm Weldment. TheSqueegee Assembly is fastened tothe Squeegee Mount Weldment withtwo Thumb Nuts.The Squeegee Lift Actuator raisesand lowers the Squeegee Assembly,and is mounted horizontally in theleft rear of the chassis underneaththe recovery tank. The SqueegeeLift Actuator is attached to themachine frame and to theSqueegee Lift Arm Weldment.The Ball Joint attaches theSqueegee Lift Arm Weldment to theframe and allows the SqueegeeAssembly to move as necessary.SqueegeeAssemblySqueegeeLift ArmWeldmentThumbNut (2)SqueegeeMountWeldmentSqueegeeArmWeldmentSqueegeeLiftActuatorBallJoint
