Question about Paragon 8145-20 Defrost Timer

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Install and use Paragon 8145 defrost timer

Hello, can you tell me where can I find online install and use instructions for a Paragon 8145 defrost timer?

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Try the uniline website

Posted on Feb 26, 2010

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How to set the timer of timing moter 8145-20


Copy following links:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#set
http://waterheatertimer.org/images/8145-work-image.jpg

Install defrost trippers on dial at times you want defrost to begin.
8145-20 is generally time initiated, and temperature or pressure terminated... but you can set the defrost duration on smaller center dial..and this setting will terminated defrost cycle mechanically if the pressure or temperature sensor fail. Then manually rotate timer dial until current time lines up with time marker in upper left side.

Gene
h.

Nov 24, 2013 | Paragon 8145-20 Defrost Timer

1 Answer

My freezer timer went out part #8145-20 how much is this part


Web search for 'Paragon 8145-20'
Pex supply sells 8145-20 240Volt defrost timer for $116, and Grainger for $180

Open following link for manual, wiring diagrams, and other defrost resources.
http://waterheatertimer.org/Paragon-timers-and-manuals.html#defrost
Take a photo of wiring before starting crossover to new timer

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
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May 20, 2011 | Paragon 8145-20 Defrost Timer

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What is the purpose of the solenoid.


You posted under Paragon 8145-20 defrost timer
The solenoid resets timer, and ends defrost cycle when pressure or temperature switch calls for termination.
http://waterheatertimer.org/Paragon-timers-and-manuals.html#8145

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For a price, expert works with you while you work on water heater or any do-it-yourself project.
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Mar 05, 2011 | Paragon 8145-20 Defrost Timer

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I'm looking for a control wiring diagram for this set up; The condenser is on the roof with a paragon 8145-20 in it. I want to control the defrost cycle of the walk in freezer that is downstairs. The...


Open following link to see wiring diagram and manual for Paragon defrost timers:
8145-20 is 240V time-initiated, pressure or temperature terminated, with back-up time termination.
http://waterheatertimer.org/Paragon-timers-and-manuals.html#defrost

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Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on timer or any do-it-yourself project.
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Feb 11, 2011 | Paragon 8145-20 Defrost Timer

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I need a three phase wiring diagram for 8145-20 model timer.


8145-20 240Volt Paragon timer is not 3-phase.
Clock motor is 240V.
You need a transformer to convert 3-phase to single phase 240V to operate timer.
Then timer outputs can control 3-phase power using 3-phase contactors
Contactor below is 3 phase with 240V coil
http://www.grainger.com/Grainger/DAYTON-Contactor-2UTP7?Pid=search

Defrost timer wiring diagrams show below:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#defrost

Dec 21, 2010 | Paragon 8145-20 Defrost Timer

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I have a paragon 8145-20 defrost timer. do you wire the compressor to the timer? I cant seem to find a wiring diagram on how to wire this correctly


Link below has wiring diagrams and wiring manuals for 240V 8145-20
http://waterheatertimer.org/Paragon-timers-and-manuals.html#defrost

I am not expert installing defrost timers.
According to information from Paragon, 8145 is for hot gas defrosting. 8140 series are time initiated, and pressure-or-temperature terminated.
Wiring diagram does not show compressor wired to timer.

The cycle works like this:
Timer is running but defrost is not switched ON.
Fan is ON.
Timer switches ON and activates defrost cycle.
Fan turns OFF. Hot gas valve turns ON for defrosting.
Cycle limit switch is temperature or pressure sensitive.
Cycle limit switch reaches trip point, timer switches OFF.
Hot gas valve turns OFF. Fan turns ON.
So fan is off during defrost cycle.
Hot gas valve turns ON when timer switches ON.
Timer is switched OFF by pressure-or-temperature limit switch.

Dec 09, 2010 | Paragon 8145-20 Defrost Timer

1 Answer

I need wiring diagram for Paragon 8154-20. The plastic board has melted


I think you have the 8145-20 240V
This is a time-initiated defrost timer

Paragon 8145 page
http://www.uni-line.com/modules/catalog/SearchResults.aspx?mode=productsearch&prodID=8145

Wiring for 8145
http://www.uni-line.com/images/docs/refrigeration-8140series-wiring.jpg

Wiring diagram shows both 120V and 240V
L1 L2 is 240V
L N is 120V

090794f.jpg

Website that explains defrost cycle
http://www.appliance411.com/faq/howdefrostworks.shtml

Oct 11, 2010 | Paragon 8145-20 Defrost Timer

1 Answer

On a Paragon 8145-20 Defrost Timer, I know you land the refrigeration circuit on terminal 4, the heater on terminal 3, but what goes on terminal "X" and terminal "N"


Link below has 8145-20 wiring diagram:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#defrost

Terminal N is 2nd wire needed to complete circuit.
In 240V 8145-20, there are two hot wires.
One Hot connects to terminal 1, with jumper to terminal 2.
Second Hot connects to terminal N, and this will power the clock motor and timer.
Terminal X is for temperature or pressure termination switch.

Defrost cycle works like this:
Timer is running but switched OFF.
Refrigeration fan is ON.
Timer switches ON, defrost cycle begins.
Refrigeration fan turns OFF.
Hot gas defrost turns ON.
When temperature-or-pressure limit switch reaches trip point, it switches timer OFF.
Refrigeration fan turns ON again.
Hot gas defrost turns OFF.

Aug 01, 2010 | Paragon 8145-20 Defrost Timer

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