Full recovery tank shutoff

A method of operating a cleaning system having a vacuum source in fluid communication, via a first air path and a second air path of a recovery tank, with a suction inlet, the recovery tank configured to store a fluid drawn through the suction inlet, by the vacuum source, from a surface to be cleaned, the recovery tank having a shutoff float configured to float on a surface of the fluid within the recovery tank, the method comprising:

• closing off, via the shutoff float, the first air path when the surface of the fluid within the recovery tank reaches a desired level;
• sensing, via a current sensor, a current drawn by the vacuum source;
• receiving, from the current sensor, a signal indicative of the current drawn by the vacuum source;
• determining, via a controller, when the fluid within the recovery tank has reached a desired level, the determination based at least partially on the signal indicative of the current drawn by the vacuum source crossing a threshold;
• and
• controlling, via the controller, an operating component upon determining the fluid within the recovery tank has reached the desired level, wherein the operating component is selected from the group consisting of the vacuum source, a power supply, a pump, a valve, an agitator motor, and an indicator.