Liquid shampoo machines effectively clean carpets because of the foaming action provided to the carpet fibers. This helps to scrub and extract embedded dirt during the cleaning procedure. Excess foam can sometimes build up inside of the extraction tank and your shampooer lines that can impede proper operation of your machine. Defoaming agents can be added to your carpet cleaner to help reduce foaming during the extraction process and keep your hoses free from detergent buildup.
Things You'll Need
- Defoamer solution
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Prevent excess foam in your shampoo reservoir by first filling your reservoir with hot water before adding the shampoo. Adding water after the shampoo in the tank will cause suds to form, while the reverse distribution will not.
Cut down on the amount of shampoo you use in the shampoo reservoir. You may use up to one third less than the manufacturer's recommendations to avoid excess sudsing. This can lessen foaming and help prevent residual shampoo from being left behind in carpet fibers after cleaning.
Use a commercial defoamer solution to lessen foam inside of the lines and inside the extractor tank. Shake the defoamer well (or follow the manufacturer’s recommendations on the bottle) and add 2 to 3 ounces of defoamer to 2 quarts of warm water inside of a bucket.
Remove the wand from the shampooer, turn on your machine and suck up the solution directly through the hose to clear the lines from detergent buildup.
Add 2 ounces of the defoamer to 1/2 gallon of water inside of the extractor recovery tank. Stir slightly and replace the lid before shampooing carpets. Empty the extractor tank as needed and apply more of the defoamer if you still experience a buildup during your extraction operations.