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Features
- Frequency of defrost is one to six cycles per day. A minimum of four hours between successive defrost cycles.
- Adjustable back-up defrost termination from four-110 minutes in two minute increments.
- Control works with an external temperature or pressure sensor.
- Choice of three contact arrangements for electric heat, compressor shutdown or hot gas defrost.
- Positive switch action slider bar.
- Switch ratings per pole: 40 amp, 2 hp, 690 VA pilot duty, 120-240 volts AC.
- Heavy steel enclosure. Gray finish. Knockouts at bottom, back and sides. Hasp and staple for padlock. Available on bracket for sub-panel mounting.
- Operating voltage: 120 or 208-240 volt, 60 Hz (50 Hz - see chart below).
- Heavy duty, synchronous industrial type motor.
First transfer after refrigeration cycle: (A633-20) - 2-4 remains closed (compressor).
- 1-3 opens (fan).
- 3-N remains open (heaters).
Second transfer: - (3-6 minutes after the first)
- 2-4 opens (compressor).
- 1-3 remains open (fan).
- 3-N closes (heaters).
- Shipping weight = 3-3/4 lb. (1.7 kg.).
- Control supplied with 4 dial pins. Extra pins, part number X-3596.

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