Paragon 632 20 Defrost Timer

User Manual: Paragon-632-20-defrost-timer

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6/23/13

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Product Detail
632-20
632 SERIES DEFROST C ONTROLS

Operating Instructions
Load 1: Compressor. Upon initiation of the defrost cycle, the bottom switch transfers, opening terminal
contacts 1-4 (load 1) and closing terminal contacts 4-5 (load 4). This period is adjustable from 0 to 30
minutes.
Load 2: Defrost. At the end of this period, the top switch transfers opening terminal contacts 3-4 (load
3) and closing terminal contacts 2-4 (load 2). This period is adjustable from 3 to 45 minutes.
Load 3: Fan Delay. At the end of this period, the top switch transfers to its original position opening
terminal contacts 2-4 (load 2) and closing terminal contacts 3-4 (load 3). This period is adjustable from 3
to 15 minutes.
Load 4: Drain Normally Closed Valve. At the end of this period, the bottom switch transfers to its original
position opening terminal contacts 4-5 (load 4) and closing terminal contacts 1-4 (load 1). This completes
the defrost cycle and the system is back to its refrigeration cycle.
Outline of Timing Sequence
1. At the initiation of the defrost cycle, load 1 opens and 4 closes.
2. 0 to 30 minutes later load 3 opens and load 2 closes.
3. 3 to 45 minutes later load 2 opens and load 3 closes.
4. 3 to 15 minutes later load 4 opens and load 1 closes, thus initiating the refrigeration cycle.
Defrost initiation is adjustable from 1-8 cycles per day; minimum three hours between successive cycles.
Delay or pump down cycle is adjustable from 0-30 minutes; 3 minute graduation: for stopping fans,
reducing refrigerant pressure, or hot gas pump down cycle.
3-45 minutes defrost cycle; 3 min. graduation.
Drain or fan delay cycle is adjustable from 3-15 minutes; 3 minute graduation.
Sequence switching: 2 NO 2 NC .
Switch ratings: 10 amps, 345 VA pilot duty 120-240 Vac. Switches 2-4 and 3-4 carry 1/2 Hp rating.
Heavy steel gasketed case; gray finish, knockouts on bottom, side and back; hasp and staple for padlock.
Available on bracket for sub-panel mounting.
Shipping Weight: 4-3/4 lbs. (2.2 kgs.).
Ru recognized and C SA approved.
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