Note: 1.The valve on the side controls the shampoo volume. The valve on top controls the air. The mixture between air and shampoo will then create cleaning foam. Different shampoo requires different mixture to create nice foaming. 2.Periodically it is recommended to clean up the filter inside the black handle. 3.Working pressure is 5~8 bars (70~110 psi) Note: Only use approved washing shampoo. Non approved shampoo could damage paint/surface of the object -Add in shampoo in the bottle. -Connect the sprayer to air supply. -Aiming spray nozzle to the targeting spot. -Squeeze the gun trigger. The cleaning foam will spray out from the nozzle. -Adjust the distance between the nozzle and targeting surface. The thrust may blow up dust. -Spray repeatedly until cleaning foam covers the surface of the object. -Choose different nozzles for more concentrated or wide spray zone. -Let shampoo stay on the surface to eat up the dust/debris. -Use water to clean up the object to finish the work. Portable Cleaning Foam Sprayer ‧CAPACITY : 1.9L ‧MATERIAL : HDPE ‧DIMENSION: 480X190X290M/M