Starting a pressure washer without water can cause serious damage to the machine and its components. Pressure washers are designed to pump water at high pressure, and when they operate without water, several problems can arise:
Pump Damage: The pump in a pressure washer relies on water to create pressure. Without water, the pump can run dry, leading to overheating and potential damage to its seals, pistons, and other internal parts. Running the pump without water can cause it to seize or wear out prematurely.
Uncontrolled Pressure Surge: When a pressure washer is running without water, the pressure can build up rapidly and cause a pressure surge. This surge can damage the high-pressure hose, spray gun, or other components connected to the pressure washer's output.
Motor Damage: Depending on the type of pressure washer, it may have an electric motor or a gas engine to power the pump. Running the motor without water can overheat it and cause it to burn out or suffer other mechanical failures.
Safety Hazard: Starting a pressure washer without water can be hazardous. If the pump is running dry, it can get extremely hot, potentially leading to burns or fires. Additionally, a pressure surge could lead to unexpected spray recoil, causing injuries to the operator or bystanders.
To avoid these issues and ensure the longevity of your pressure washer, always follow these steps before starting it:
Connect the water supply: Make sure the pressure washer is connected to a suitable water source with an adequate flow rate.
Purge the air: Before starting the pressure washer, trigger the spray gun to allow water to flow through the system and remove any air trapped in the hoses and pump.
Check water supply: Verify that water is flowing correctly through the machine before engaging the motor or engine.
Follow the manufacturer's instructions: Always refer to the owner's manual for specific guidelines and safety precautions related to your pressure washer model.
By taking these precautions and using the pressure washer properly, you can ensure its efficient operation and avoid unnecessary damage.