1. Pressure Reduction: There's a pressure regulating valve on the car wash pump. Loosening the valve reduces pressure.
2. Pressure Increase: There's a pressure regulating valve on the car wash pump. Loosening the valve increases pressure.
3. High-Pressure Washer: High-pressure washers usually have a pressure regulating valve. The location varies depending on the manufacturer and model. Refer to the instruction manual for the valve's location; simply rotate it to adjust the pressure.
4. Tabletop Water Pump Washer: There's an adjusting nut below the pressure gauge (located at the bottom of the water pump inlet pipe; it's the nut supported by a thick spring, so you need to lower your gaze to see it). Use approximately a 17mm open-end wrench or an adjustable wrench. Turning clockwise decreases pressure, and counter-clockwise increases it. The machine must be running and water output before adjusting; otherwise, the appropriate pressure cannot be achieved.
5. Tunnel Car Wash:The car wash machine remains stationary; the car is slowly propelled through its working area. The machine follows a programmed sequence to clean the car. Examples include: tunnel-type continuous car wash machines; large tunnel-type (trolleybus, bus, subway, passenger train) cleaning machines.
6. Reciprocating car wash: The car remains stationary while the car wash machine moves back and forth on a guide rail according to a set program, simultaneously executing washing instructions. Examples include: gantry reciprocating car wash machines, large (medium) and small mobile car wash machines, etc.
