What To Know
- If the compressor is connected to a circuit breaker or fuse, check if they have tripped or blown.
- If the pressure switch is adjustable, try adjusting it to a higher setting and see if the compressor starts.
- By methodically troubleshooting the potential causes outlined above, you can pinpoint the reason why your DeWalt air compressor won’t turn on and take the necessary steps to resolve the issue.
Troubleshooting a malfunctioning air compressor can be a daunting task, especially when it’s your trusty DeWalt. If you’re facing the perplexing issue of “why won’t my DeWalt air compressor turn on,” this comprehensive guide will equip you with the knowledge and steps to diagnose and resolve the problem.
Electrical Faults
Power Source Issues
- Check the power cord: Ensure it’s securely plugged into a live outlet and that the cord is not damaged.
- Reset the circuit breaker or fuse: If the compressor is connected to a circuit breaker or fuse, check if they have tripped or blown.
Compressor Switch Malfunction
- Inspect the power switch: Look for any signs of damage or wear. Try toggling the switch multiple times to see if it makes contact.
- Test the switch with a multimeter: Set the multimeter to continuity mode and check if the switch is completing the circuit when turned on.
Mechanical Problems
Pressure Switch Failure
- Check the pressure switch: The pressure switch controls when the compressor turns on and off. Ensure it’s properly connected and not damaged.
- Adjust the pressure switch: If the pressure switch is adjustable, try adjusting it to a higher setting and see if the compressor starts.
Stuck Pistons
- Inspect the pistons: Remove the compressor head and check if the pistons are stuck. This can be caused by excessive wear or debris buildup.
- Clean or replace the pistons: If the pistons are stuck, gently clean them or replace them if necessary.
Air Leaks
- Check for leaks: Inspect the compressor for any leaks in the hoses, fittings, or tank. Leaks can reduce pressure and prevent the compressor from starting.
- Tighten connections: Use a wrench or sealant to tighten any loose connections and eliminate leaks.
Other Considerations
Overload Protection
- Overload protector: The compressor may have an overload protector that shuts it off if it overheats or experiences a power surge.
- Reset the overload protector: If the overload protector has tripped, wait a few minutes for it to cool down and then press the reset button.
Insufficient Voltage
- Voltage requirements: Check the manufacturer’s specifications for the voltage requirements of your DeWalt air compressor.
- Voltage drop: If the voltage supplied to the compressor is too low, it may not have enough power to start.
Conclusion
By methodically troubleshooting the potential causes outlined above, you can pinpoint the reason why your DeWalt air compressor won‘t turn on and take the necessary steps to resolve the issue. Remember, if you encounter any complex or persistent problems, it’s always advisable to consult a qualified technician for professional assistance.
Quick Answers to Your FAQs
Q: What should I do if my DeWalt air compressor is humming but not starting?
A: Check the power source, pressure switch, and pistons. A humming sound may indicate a mechanical issue that prevents the compressor from starting.
Q: Why does my DeWalt air compressor turn on and then immediately shut off?
A: This could be due to a faulty pressure switch, overload protector, or air leak. Inspect and adjust or replace these components as needed.
Q: What does it mean if my DeWalt air compressor is not building pressure?
A: Check for air leaks, a faulty pressure switch, or stuck pistons. Ensuring proper sealing and replacing or repairing the affected components can resolve the issue.
