Campbell Hausfeld MC507018AV Compressor Start Capacitor MC0186 MC0193

The MC507018AV start capacitor is a vital electrical component used in Campbell Hausfeld air compressors to provide the initial torque needed for motor startup. When it begins to fail, the compressor may struggle to start or fail to engage the motor completely.

Common Symptoms this Capacitor Helps Address:

• Compressor hums but motor does not start

• Intermittent or delayed motor startup

• Breaker trips during startup attempt

• Motor struggles to reach full speed

• Burning smell or overheating near motor housing

Breaker Tripping on Startup

Quick Check: Check if breaker trips immediately when compressor tries to start.

Fix Suggestion: Install a new MC0186/MC0193 compatible MC507018AV capacitor if capacitance has dropped.

Prevention Tip: Ensure proper voltage supply and avoid extension cords with insufficient amperage rating.

Slow or Delayed Motor Startup

Quick Check: Observe motor response time after switch-on.

Fix Suggestion: Replace weakened capacitor that cannot deliver proper startup boost.

Prevention Tip: Keep electrical connections tight and free from corrosion.

Motor Overheating During Startup Attempts

Quick Check: Feel for excessive heat buildup near motor casing after failed starts.

Fix Suggestion: Replace faulty start capacitor immediately to reduce motor strain.

Prevention Tip: Avoid repeated start attempts without diagnosing electrical components.

Compressor Starts Intermittently

Quick Check: Test startup consistency across multiple power cycles.

Fix Suggestion: Inspect and replace MC507018AV capacitor if internal dielectric breakdown is suspected.

Prevention Tip: Store compressor in dry environments to prevent capacitor moisture damage.

Customer Experience: After replacing the MC507018AV start capacitor, many users report that the motor starts more consistently and reaches operating speed without hesitation.

• Is the Campbell Hausfeld MC507018AV compatible with all air compressor motors?

  It is designed specifically for compatible Campbell Hausfeld compressor models using MC0186 and MC0193 capacitor configurations, so compatibility depends on matching motor specifications.

• Why is my compressor only humming after installing the MC507018AV capacitor?

  If humming continues, the capacitor may not be properly connected, or other motor components such as the centrifugal switch or windings may also need inspection.

• Can I replace the MC507018AV start capacitor myself safely?

  but the power must be fully disconnected and discharged before replacement. The capacitor should be installed with correct terminal alignment to ensure safe startup operation.

• What is the role of the Campbell Hausfeld MC507018AV Compressor Start Capacitor?

  It provides the necessary electrical boost to help the compressor motor start efficiently, delivering the initial torque required for smooth and reliable motor engagement."