PSC External Capacitor Unit Bearing Motors

PSC External

Applications

Our PSC external capacitor unit bearing motors are primarily used in commercial refrigeration applications, both evaporator and condenser, but can be used in any application demanding dependability with output ratings between 16 – 25 watts.

 

Innovative design

With over 60 years of experience our patented unit bearing motors provide our customers with years of durable, problem-free operation. Our PSC has twice the efficiency and is significantly quieter than our shaded pole motor. Utilizing an integrally-mounted capacitor results in a component unit that provides you with a direct mechanical interchangeability with our shaded pole unit bearing motors and requires no additional wiring connections.

 

Optimize your performance

All of our PSC external capacitor unit bearing motors can be sold with a variety of mounting brackets and fan blades in order to optimize airflow and system efficiency.

Electrical Summary

  • Voltage: 115 or 230 V

  • Output: 14 – 25 watts

  • Efficiency: ~45% peak

  • Speed Range: 1350 – 1550 RPM

  • Speeds: 1

  • Rotation: CW, CCW, or reversible (determined from the lead end of the motor)


Mechanical Summary

  • Type: 3.3” PSC cast iron frame unit bearing

  • Shaft: ¼” x 20 thread is standard. Optional features include flatted end, smooth end, and 5/16’ diameter shaft

  • Enclosure: Aluminum or Cast Iron (totally enclosed)

  • Bearing: Unit bearing

  • Bearing Oil: (ISO grades 15, 32, or 68) high quality paraffinic based oil selected for excellent oxidation resistance, wear protection, protection against rust and corrosion, and resistance to foaming. Also available, an oil with optimum flow characteristics at sub-zero temperatures. (ISO grades 10/15 or 68) synthetic diester-based lubricant formulated to offer extended lubrication over a wide temperature range and minimize wear.

  • Mounting: Five .150” diameter cored holes on rear (aluminum only), three #8-36 tapped through holes (cast iron only), and optional 1 side mounting boss for pedestal mounting

  • Operating Position: Horizontal shaft (+/- 15°), optional all-angle, or vertical shaft up

  • Leads: Standard 18 gauge, 2 conductor. Lead cord may be terminated with 1/2” stripped wire, in-house molded plugs, eyelets, ¼” quick connects, or special terminals. Other customized lead options are available.

  • Capacitor: External


Environmental Summary

  • Storage Temps: -40 to 80° C ambient (depends on selected oil)

  • Operating Temps: -40 to 55° C ambient (depends on selected oil)

  • Design Life: 12 years, 100,464 hours on time (based on normal evaporator operating conditions)


The Morrill Motors Pledge

Since 1946, Morrill Motors has earned the trust of customer around the world. Our commitment to quality and unique designs is unwavering. Working with you and your team, we will ensure exacting specifications and performance standards whether you select one of our many current production models, or choose to have us customize features and specifications to meet your special requirements.

We are pledged to ensure your success. Expect only the best service, quality and value when you specify Morrill Motors.

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