There are different ways technicians agitate carpets to remove soils. One way is to utilize a 175-rpm rotary machine with a shampoo brush attached. With an effective chemical applied and allowed the designated time to dwell on the carpet, this is one way to suspend soils from carpets. However, a more effective way is for the technician to use the wand of the extractor along with the pressure generated by the hot-water extractor, measured as pounds per square inch (psi), to agitate the ...

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