What is the unloader valve on a Greenworks pressure washer?

Essentially, an unloader valve is a safety switch. It sends pressurized water into a by-pass by cycling it from the outlet side of the pump to an inlet or water tank. This process depressurizes the water and prevents pressure from building up while the pressure washer machine is idling.

How do you know if your unloader valve is bad?

If the valve does not work correctly, the pressure washer pump will get hot, and more power is asked from the engine. If you have a gas pressure washer, you can hear more engine noise due to the higher load. Water leaks and inconsistent output pressure are also signs that there is a problem with the unloader valve.

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How do I fix the unloader valve on my electric pressure washer?

Where is the unloader valve on an electric pressure washer?

What is the unloader valve on a Greenworks pressure washer? – Related Questions

Can a pressure washer run without an unloader valve?

However, if the pressure washer gun is disengaged, and there is no unloader valve to redirect the pressurized water, the pressure would continue to build. It wouldn’t take long for the pressure to exceed the components’ PSI limitations, and damage the pump, gun, or hoses.

How do you test a pressure washer unloader valve?

Where is unloader valve located?

The unloader valve is located somewhere in the line between the compressor and the compressor tank. There are many differences in the types of unloader valves and they vary greatly between compressor manufacturers. Typically there are two main types of valves: Mechanical and Electrical.

What causes an electric pressure washer to not have pressure?

Pressure may decrease if your packing is worn out or if there are abrasives or severe cavitation (bubbles) in the pumped fluids. This can be caused by an inadequate amount of water and/or a lack of proper filtration. To fix, install the proper filter.

How do I reset my electric pressure washer?

Each time the power cord is plugged in to an outlet, the Reset button on the GFCI module must be pressed down to connect to electricity. Check to see if the Reset button has been pressed. Next, confirm the small plastic window below the Reset button shows RED in the window.

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Why is my electric pressure washer not getting pressure?

There could be small leaks, holes, or tears in your garden hose or high-pressure hose that are causing your pressure washer to lose pressure when you pull the trigger. If you find leaks, plug the holes or replace the hose, which should solve your pressure issues.

Is there a recall on Greenworks pressure washer?

The model number is printed on the back of the pressure washer unit, near the top. The brand, Greenworks or Powerworks, appears on the side of the pressure washer spray gun.

Recall Details.

Model NumberDESCRIPTIONDate Codes
GPW1704GREENWORKS 1700 PSI Pressure Washer1/1/17 – 10/31/19

How does a pressure washer unloader valve work?

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. Flow may be directed back to the pump inlet or to a float tank or other type of reservoir.

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.

What is the most reliable brand of pressure washer?

The Best Pressure Washer

What should you never pressure wash?

9 Things That You Should Never Pressure Wash
  1. Asphalt Shingles. You should not pressure wash asphalt shingles on your roof as it will remove the granules that protect your roof.
  2. Stained Wood. It is also wise to avoid wood surfaces such as outdoor furniture.
  3. Lead Paint.
  4. Old Mortar.
  5. Vehicle.
  6. Windows.
  7. Gutters.
  8. AC Units.

How long can you continuously run a pressure washer?

Machine Type: Gas pressure washers can typically run for about 30 minutes before they need a break. Electric models can usually go for an hour or more. If you’re using a hot water pressure washer, you’ll need to give it breaks more frequently – about every 15 minutes.

How long can you run a pressure washer 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.

How many PSI do you need to pressure wash anything?

For regular maintenance and light household cleaning jobs, a light-duty pressure washer will do. These feature PSI ranging from 1500 to 1900 and would be enough to get rid of dirt and mild stains. This is the safest pressure washer PSI rating for all surfaces, but it isn’t ideal for getting rid of tough stains.

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