You have a dedicated 120 V / 20 amp circuit and a 120/240 volt motor. Convert the circuit and the motor to 240. The motor will be more efficient and draw half the amps. Replace the breaker with a 2 pole and replace the receptacle and plug (less than $40 material).
Coastal South Carolina
All responses based on the 2011 NEC.
If you live in New Jersey click here. All other states click here.
Please check with local, county and state officials as laws may vary.
Sizing motors here. Online motor calculator here. Online calculators here.