1- Increase the rinse water,

2- Your carpet wringing machine may be insufficient, (increase your engine speed or wring time.)

3- Measure the PH value of your shampoo, (the pH value of carpet shampoo should be 7.) 7 ph above may 

cause yellowing.

4- Change the pool water frequently.

5- If you have applied stain remover or any chemical to the carpet after washing, make sure to wash the 

carpet and dispose of the chemical. (Chemical residue may cause yellowing.)

6- Do not hang carpets above the capacity of your dryer. (Otherwise, your machine will be insufficient to 

collect moisture, and it may cause yellowing as it cannot quickly evacuate the moisture in the environment.)

7- The floor of your room should not be concrete or ceramic, the floor, walls and ceiling should be covered 

with thermal insulation, and the floor should be laid with wood or laminate parquet. (Drying time may be 

prolonged because concrete or ceramic sweats, or the humidity of your room may increase and cause 

yellowing.) Carpets containing wool, Nepalese carpet, cotton or light tones may turn yellow if excessive 

moisture builds up in closed drying chambers and insufficient moisture removal or if they do not drain 

enough water during spinning. If your carpets turn yellow in the open area, have your water analyzed. If 

your water is normal, change the shampoo you have used.