Unlock the Mystery: How to Detect a Bad Water Hammer Arrestor in Your Washing Machine

Water hammer, the sudden surge of water pressure that occurs when water flow is abruptly stopped, can be a nuisance in your home, causing banging noises in pipes and even damaging appliances. A faulty water hammer arrestor in your washing machine can exacerbate this problem, leading to costly repairs. Here’s a comprehensive guide to help you identify and troubleshoot a bad water hammer arrestor in your washing machine:

Symptoms of a Bad Water Hammer Arrestor

• Banging or hammering noises: These sounds are the telltale sign of water hammer, and a faulty arrestor can amplify them.
• Leaking water: A leak near the arrestor indicates a malfunction or damage.
• Reduced water pressure: A clogged or worn-out arrestor can restrict water flow, resulting in lower water pressure.
• Vibrating pipes: The pressure surge can cause pipes to vibrate, creating a noticeable rattling or shaking.
• Premature appliance failure: Water hammer can put undue stress on appliances like washing machines, potentially shortening their lifespan.

Identifying the Water Hammer Arrestor

The water hammer arrestor is typically a small, cylindrical device located near the washing machine‘s water supply lines. It may be made of brass, plastic, or copper and has a rubber diaphragm or piston inside.

Troubleshooting a Bad Water Hammer Arrestor

1. Check for Obstructions:

• Inspect the arrestor and its surroundings for any debris or clogs that may hinder water flow.
• Remove any visible obstructions and ensure the lines are clear.

2. Test the Arrestor:

• Turn off the water supply to the washing machine.
• Disconnect the arrestor from the water line.
• Hold the arrestor upside down and tap it gently.
• If you hear a clicking sound, the arrestor is likely functioning properly.

3. Inspect the Diaphragm/Piston:

• If the arrestor doesn’t click when tapped, the diaphragm or piston may be damaged.
• Disassemble the arrestor (refer to the manufacturer’s instructions) and inspect the diaphragm/piston for tears, cracks, or wear.

4. Check for Leaks:

• Reinstall the arrestor and turn on the water supply.
• Observe the arrestor for any leaks.
• A leak indicates a faulty seal or damaged components.

5. Adjust the Air Charge:

• Some arrestors have an adjustable air charge.
• If the arrestor is making excessive noise, you may need to adjust the air charge according to the manufacturer’s guidelines.

6. Replace the Arrestor:

• If all troubleshooting steps fail, it’s likely time to replace the water hammer arrestor.
• Purchase a new arrestor that is compatible with your washing machine and follow the manufacturer’s installation instructions.

Prevention and Maintenance

• Regularly check the water hammer arrestor for any signs of damage or wear.
• Clean the arrestor and water lines to prevent clogs.
• Install a whole-house water hammer arrestor to reduce pressure surges throughout the plumbing system.
• Avoid sudden stops and starts of water flow by using soft-closing valves and faucet aerators.

Conclusion

A faulty water hammer arrestor in your washing machine can cause a range of problems, from annoying noises to costly repairs. By following these troubleshooting steps, you can identify and fix the issue, ensuring a smooth-running washing machine and a more peaceful home.

FAQ

Q: Can I repair a water hammer arrestor myself?

A: It’s possible to repair some water hammer arrestors by replacing damaged components, but it’s generally recommended to replace the entire unit for optimal performance.

Q: How often should I replace my water hammer arrestor?

A: The lifespan of a water hammer arrestor varies depending on the type and usage. However, it’s a good idea to inspect and replace it every 5-7 years or as per the manufacturer’s recommendations.

Q: What are the potential consequences of ignoring a bad water hammer arrestor?

A: Ignoring a faulty water hammer arrestor can lead to increased water hammer noises, damage to pipes and appliances, and premature appliance failure.