44 - FORM NO. 56043052 / HYDRO-RETRIEVER™ 2052, CR 1300
VACUUM / RECOVERY SYSTEM
Squeegee
Squeegee Hose
Vacuum Filter
Vacuum Motor
Shut-off
Float
Recovery Tank
Drain Hose
Recovery Tank
Cover
FRONT
Cover Gasket
FUNCTIONAL OVERVIEW
Vacuum / Recovery System General
Dirt and water are lifted off the floor into the recovery tank by airflow, created by a 3-Stage 36V vacuum motor. The wastewater and air enter the
vacuum system at the squeegee tool, through small openings (notches) located in the front squeegee blade. The small openings are the entrance
points for the water and air, and help speed up the airflow producing the suction to lift the wastewater off of the floor. The air and wastewater move
through the squeegee hose at 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 the heavier water falls to the bottom of the recovery tank. Then at the same time the airflow continues
through the tank, shutoff float, vacuum hose, vacuum motor filter and is exhausted out of the vacuum motor housing. No wastewater ever actually
moves through the vacuum motor, just clean air.
The vacuum system uses a shutoff float to prevent the tank from being overfilled and stops any water from being sucked into the vacuum motor.
Vacuum Motor Function
See Figure 2. To energize the K7 vacuum motor solenoid under normal operations the vacuum/squeegee switch *S6 must first be turned on
(squeegee lowered). With the machine’s drive pedal depressed (Fwd) the S3 switch closes and triggers the E2 module timer input to activate
(close) an internal relay that controls the timer output terminal’s negative voltage signal. This completes the K7 solenoid circuit and the M6 vacuum
motor will run. Note: the timer output voltage from E2 will remain closed for 10 seconds after the drive pedal is return to neutral or reverse, then
the output circuit is opened and the vacuum motor will stop. Note: This 10-sec. shut off delay helps prevent water from draining back out of the
squeegee tool.
*S6 Note: Listed is the three usable functions for the rocker switch S6. (1) The upper switch position lowers the squeegee tool and controls the
vac motors ON/OFF function when the machine is moving. (2) The middle position is the off position for both the vac motor/squeegee lift. (3)
The lower position controls the continuous run vac motor function when used with the optional vacuum accessory tools.
revised 3/00
FIGURE 1