Nilfisk-Advance BR 1100S Service Manual

Also see for 56413006: Instructions for use Instructions for use - original instructions

Contents

Nilfisk-Advance BR 1100S Service Manual Manual pdf 34 page image

32 - FORM NO. 56043122 - BR 1100S, 1300S4 - RECOVERY SYSTEMFUNCTIONAL OVERVIEWVacuum / Recovery System GeneralDirt and water are lifted off the floor into the 70 Gallon (265 liter) recovery tank by airflow, created by a 3-Stage 36V vacuum motor. The wastewater and air enterthe vacuum system at the squeegee tool, through small openings (notches) located in the front squeegee blade. The small openings are the entrance points for thewater and air, and help speed up the airfl ow producing the suction to lift the wastewater off of the floor. The air and wastewater move through the squeegee hoseat high speed until it reaches the recovery tank. There the air slows down because of the increased volume (large size) of tank. With the decreased air speed theheavier water falls to the bottom of the recovery tank. Then at the same time the airflow continues through the tank, vacuum fan inlet screen, vacuum motor and isexhausted out of the vacuum exhaust hose. No wastewater ever actually moves through the vacuum motor, just the working air.The vacuum system uses a shut-off float to prevent the tank from being overfilled and stops any water from being sucked into the vacuum motor. When the float ballrises (to full tank level) it will seat itself inside the cage assembly and block off the air flow. This causes a reduced vacuum motor current load which is sensed bythe main control board and automatically shuts off the vacuum and scrub systems. The dash panel will then display the recovery tank full indicator icon to alert theoperator that the tank needs to be drained. Note: See the “Know Your Machine” section in this manual for an illustration of the full indicator icon.FIGURE 4.1