Finish Thompson Inc model S1 drum pump motors are compatible with the following Finish Thompson series drum pumps: EF. Model S1 Open Drip Proof (ODP) motor has an input/output of 230/110 Watts, 60 Hz, 115 Volts, Single Phase, Variable Speed, 2.0 full load ampere rating (FLA), 8,000 to 14,000 RPM and a maximum viscosity of 300 cP. The double wall thermoplastic motor housing reduces noise and vibration.