Systems
Solution Delivery Systems
The solution system decides how much water and chemical reach the floor, and getting that amount right matters more than most operators think. Too little solution and the brushes scrub dry, soil is not suspended, and pads glaze. Too much and the squeegee cannot keep up, the recovery tank fills before the solution tank empties, and you get water trails, foam, and wasted chemical.
On most walk-behind machines solution flows by gravity from the tank, through a filter, past an electric solenoid valve, and out to the brushes. Larger machines and many newer models add a pump so flow stays steady as the tank drains, and some add a dosing system that meters concentrate separately from clean water. Typical flow runs from about 0.1 to 1 gal/min (0.4 to 3.8 L/min) depending on machine and setting.
These guides cover how the system works in tanks and solution flow, how to choose and verify a setting with a simple bucket test in solution flow settings, and how to clean and test the parts that most often stop flow in solution solenoid and filters. If you use onboard chemical metering, see chemical dosing systems. Chasing a dry machine right now? Go straight to no solution flow.
Floor Scrubber Tanks and Solution Flow: How Much Water, How Often
How floor scrubber solution and recovery tanks work, how flow rate is controlled, and how to plan tank size and refills for your square footage, with worked math.
Floor Scrubber Solution Flow Settings: How Much Water to Put Down
How to set floor scrubber solution flow: typical gal/min by machine and soil, a bucket test to measure real flow, and worked math for gallons per 1,000 sq ft.
Floor Scrubber Solution Solenoid and Filters: Cleaning, Testing and Replacement
How to clean a floor scrubber solution filter, test the solution solenoid valve with a multimeter, find clogs in lines and pumps, and restore normal flow.
Chemical Dosing Systems for Floor Scrubbers: Accurate Dilution Without Guesswork
How onboard chemical dosing on floor scrubbers works, dilution ratio math, the true cost of operator overdosing, and how to choose and maintain a dosing setup.
Related sections
- How Scrubbers WorkThe complete machine, explained system by system.
- Batteries and ChargingBattery types, chargers, watering, replacement and lithium.
- Water Pickup and VacuumVacuum motors, hoses, seals, recovery tanks and float shutoffs.
- SqueegeesBlades, adjustment and materials for dry floors behind the machine.
- Brushes, Pads and DecksBrushes, pads, drivers, deck types and down pressure.
- Drive and TractionTraction drive, transaxles, ramps, wheels and brakes.
- Chemistry and FoampH, dilution, foam control, residue and green certifications.