If the water gets too hot, it can damage seals and other components within the pump. To counteract this, occasionally squeeze the trigger on the spray gun/wand to release the water before it gets too hot. This will draw in fresh, cooler water and prevent damage to the pressure washer.
What is the most common problem with pressure washers?
Many pressure problems begin and end at the unloader. A cracked o-ring, dirt caught in the spring or a stuck shaft are the most common issues solved by simply removing the unloader and cleaning/looking for issues.
How hot does a pressure washer get?
Hot Water Pressure Washers
HW pressure washers can reach temperatures up to 311 °F, whereas CW pressure washers top out at 140 °F—about the same temperature as your tap. Having higher water temperatures allows HW units to clean much more efficiently.
How long can a pressure washer run without pulling the trigger?
DON’T Let the Machine Run Too Long Without Pulling the Trigger. Pressure washers operate under pressure, and that pressure needs to be released by pulling the trigger. If you let the machine run for two minutes or longer without spraying water, then you could damage the pump.
What does the unloader do on a pressure washer?
The unloader diverts the flow of water from the outlet side of the pump back to the inlet side, causing water to flow in a loop back to the pump under virtually no pressure rather than to the nozzle under operating pressure.
Why does my pressure washer overheat?
Like with lawnmowers, gas-pressure washers typically require the fuel valve to be set in the open position. If it isn’t open all the way, not enough gas will get to the engine. This could cause the unit to overheat. To prevent this, ensure that the valve isn’t stuck halfway between open and closed.
How long can you continuously run a pressure washer?
You should not run a pressure washer (except professional equipment) for more than five minutes. While the duration may vary from model to model, it should be between 3 and 5 minutes. Leaving your pressure washer running for more than five minutes can result in overheating.
Why do pressure washer pumps fail?
The two most common reasons behind the pressure washer pump going bad are a faulty unloader valve and a clogged carburetor (in the case of gas-powered washers).
Can you use a pressure washer in the winter?
You should only use the pressure washer during the warmest time of day. The highest temperatures usually occur during the late morning until the mid-afternoon. Avoid using your pressure washer in below-freezing temperatures, and take note of any wind chill.
How do hot pressure washers work?
Hot water pressure washers use an oil burner to heat the outgoing water. The water is heated after it has left the high-pressure pump and the unloader. This keeps the hot water from affecting those components.