Porter-Cable CMB15 - User Manual

Questions and Answers

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Ashley JenkinsJul 28, 2025
What to do if my Porter-Cable Air Compressor is not supplying enough air?
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  robertbentonJul 29, 2025
  If your Porter-Cable Air Compressor isn't providing sufficient air, there are several potential causes and solutions: * **Prolonged excessive use of air:** Try decreasing the amount of air you're using. * **Compressor size:** Ensure the compressor is adequately sized for your air requirements. Check the accessory's air requirement; if it exceeds the compressor's SCFM or pressure, a larger compressor is needed. * **Hose issues:** Inspect the hose for holes and replace it if necessary. * **Air leaks:** Tighten any exposed fittings to prevent air leaks.
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Sarah TaylorAug 7, 2025
How to fix excessive tank pressure in my Porter-Cable CMB15 Air Compressor?
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  alexis17Aug 7, 2025
  If your Porter-Cable Air Compressor experiences excessive tank pressure and the safety valve pops off, it could be due to: * **Pressure switch malfunction:** The pressure switch might not be shutting off the motor when the compressor reaches the "cut-out" pressure. Move the Off/Auto switch to the "OFF" position. If the unit still doesn't shut off, contact a Trained Service Technician. * **Incorrect pressure switch setting:** The pressure switch "cut-out" may be set too high. Contact a Trained Service Technician.
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Daniel GibbsAug 13, 2025
What to do if there are air leaks at the fittings of my Porter-Cable CMB15 Air Compressor?
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  Dustin JonesAug 13, 2025
  If you notice air leaks at the fittings of your Porter-Cable Air Compressor, it's likely due to the tube fittings not being tight enough. Tighten the fittings where you hear air escaping. You can also check exposed fittings with a soapy water solution to identify leaks. Remember not to overtighten. Applying thread seal tape to the threads of exposed fittings can also help.
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michaelcookAug 17, 2025
What to do if my Porter-Cable CMB15 safety valve leaks?
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  rachelpenaAug 17, 2025
  If your Porter-Cable Air Compressor's safety valve is leaking air, it may be due to a possible defect in the safety valve. Try manually operating the safety valve by pulling on the ring. If the valve continues to leak, contact a Trained Service Technician.
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Ryan WaltonAug 23, 2025
What to do if the pressure reading drops when using an accessory with my Porter-Cable CMB15 Air Compressor?
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  Mark VazquezAug 23, 2025
  It's normal for some pressure drop to occur on the regulated pressure gauge when an accessory is used with your Porter-Cable Air Compressor. However, if there's an excessive amount of pressure drop, adjust the regulator following the instructions in the Description of Operation paragraph in the Operation section. Remember to adjust the regulated pressure under flow conditions (while the accessory is being used).
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Tony JohnsonNov 2, 2025
Why won't my Porter-Cable Air Compressor motor run?
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  Robert SharpNov 2, 2025
  If the motor of your Porter-Cable Air Compressor won't run, consider these possible causes and solutions: * **Blown fuse or tripped circuit breaker:** Check the fuse box and replace any blown fuses. Reset the circuit breaker. Ensure you're using the correct fuse or circuit breaker rating for your circuit. * **Fuse type:** Use a time delay fuse. * **Low voltage:** Check for a low voltage problem. * **Extension cord:** Examine the extension cord for issues. * **Circuit overload:** Disconnect other appliances from the circuit or operate the compressor on its own branch circuit. * **Incorrect extension cord:** Verify the extension cord's length and gauge. * **Loose connections:** Check wiring connections inside the terminal box. * **Faulty motor:** Have the motor checked by a ...