TU-501 Motors, Controls & Circuits Build-up Trainer

Designed for the student with a working knowledge of the theory of refrigeration electrical control systems. Using this trainer, students are required to design a system to match specifications of a particular situation.

Connections between components are wired by the students.


Overall size: 36”W x 18”D x 73”H
Panels are 1⁄4″ thick with steel reinforced component shelf
Enclosed storage compartment
Electrical requirements: 120/240VAC, 1 Phase, 60 Hz

Build-up Trainer

Components are provided for backboard mounting in preferred arrangement. (Mounting hardware not included.)

  • Single phase disconnect
  • 24V transformer
  • Duplex receptacle
  • Low voltage thermostat
  • Defrost timer
  • Low-pressure switch
  • High-pressure switch
  • Oil pressure switch
  • Fan/limit switch
  • Heating sequencer
  • Motor starter
  • Start/stop switch
  • Current relay-Potential relay
  • Start capacitor-Run capacitor
  • Single-phase compressor
  • Capacitor start motor-PSC motor
  • Experiment manual
  • Explanations of the theory of operation

Download Spec Sheet: TU-501