Advance acoustic 56314009, Service Manual

Page: 42 / 79

40 - FORM NO. 56043089 - AquaRide
™
RECOVERY SYSTEM
Recovery
Tank Cover
FRONT
Cover Gasket
Drain Hose
Pickup Shoes
Vacuum Hose
Recovery Bladder
Float Cage
& Ball
Vacuum M otors
FUNCTIONAL OVERVIEW
Vacuum / Recovery System General
To start the extraction wastewater is lifted out of the carpet pile by air fl ow created by two 3 stage 36V vacuum motors. See Figure 1. The
wastewater and air enter at the two vacuum pick-up tools through their small narrow shoe openings that contact the carpet surface. The narrow
shape of the shoe openings are designed to help speed up the air
fl ow producing the needed suction to lift the waste water out of the carpet. Two
smaller recovery hoses are connected together and direct the high-speed air/water movement to one large hose connected to the tank inlet. At
this point the air and water enters the large
fl exible sealed recovery bladder, where the air slows down because of the increased (size) of the tank.
With the decreased air speed the heavier water falls to the bottom of the recovery bladder. Then at the same time the air fl ow continues through
shutoff fl oat, vacuum motors and is exhausted out the bottom of the vacuum motor housing.
The vacuum system uses a shutoff fl oat to prevent the tank from being over fi lled and also stops any water from being sucked into the vacuum
motors. This shut-off function works when the fl oat ball reaches its tank full level and the ball becomes seated in the fl oat housing. This action
then causes a large restriction to the vacuum air fl ow and the main controller E1 senses a large electrical current load change (lower Amps) to the
vacuum motors. This lower than normal vac circuit current load change tells the main controller that the recovery tank is full. This automatically
shuts off the vacuum and scrub systems and displays “FULL” on the hourmeter/status display telling the operator that the recovery tank has
become full.
FIGURE 1