Question about 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

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1 Answer

Anonymous

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.

Posted on Jan 20, 2011

Testimonial: "good info very helpful thank you"

  • Anonymous Jan 21, 2011

    I checked more using Frost King crossover wiring diagrams: The compressor and fan are wired together on terminal 4, sorry first answer wasn't more exact.http://www.intermatic.com/products/grass... refrigeration defrost controls/frostking defrost timers.aspx

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1 Answer

Paragon Model 632-00 Manual


Copy following link:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#632
632-00 is 120Volt defrost timer. Electric heat defrosting with fan delay.
Hot connects to terminal 4
Neutral to terminal 6.
One wire from Fan, compressor, heater each connect to terminal 6, and other wire connects to one of the other terminals depending on electric heat, hot gas, or water spray defrost

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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How to set the defrost duration on a timer


Copy following link for defrost timers:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#defrost

There are 2 general types defrost timers.
Time activated - Time terminated
Time activated - Temperature-pressure terminated, with timed termination back-up

Here is basic image:
http://waterheatertimer.org/images/8145-work-image.jpg
Rotate dial until current time lines up with pointer, insert tripper pin on outside edge of dial to select defrost start-time, move defrost duration tripper on inner dial to set termination time.

Each defrost timer is slightly different:
If timer is time-terminated, then wiring follows certain diagram.
If timer is temperature-pressure terminated, then different wiring diagram is used.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Nov 11, 2012 | Paragon 8145-20 Defrost Timer

1 Answer

Need a wiring digram for a pargon5x455 defroist timer


5x455 is WW Grainger number for 240Volt time initiated - time terminated Paragon 8045-20 timer.
Open following links to identify timer and download wiring diagram:

http://www.grainger.com/Grainger/PARAGON-Time-InitiatedTime-Terminated-Defrost-5X454?Pid=search
http://waterheatertimer.org/Paragon-timers-and-manuals.html#8045

Aug 21, 2011 | Paragon 8145-20 Defrost Timer

2 Answers

I have a large walkin freezer and the compressor and heat strip come on at the sametime, I have to disconnet the compressor when the defrost comes on. Im not sure what wire goes where.


Open following links for 8145-20 wiring diagram and resources:
http://waterheatertimer.org/images/8145-20-wiring-350.jpg
http://waterheatertimer.org/Paragon-timers-and-manuals.html#defrost

8145-20 is 240Volt defrost timer.
Heat strip and compressor should not activate at same time.
As a general rule heater connects to NO terminal 3 and compressor connects to NC terminal 4
NC terminal 3 compressor is on all the time until defrost cycle begins.
NO terminal 4 heat turns on when defrost cycle begins, and at same time NC terminal 3 compressor turns off.
At then end of the defrost cycle, NO terminal heat turns off and NC terminal 3 compressor turns on again.

Jun 29, 2011 | 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.
Fixya is always less expensive than a service call.

May 20, 2011 | Paragon 8145-20 Defrost Timer

1 Answer

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

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

I have installed 3 paragon timers and this is the first to give me trouble. When the defrost cycle started it did cut off but the timer was stuck on defrost. Many techs have done strange things to the...


You need someone to come in and trace the wiring if you cannot figure it out. You said you had the Paragon wiring diagram already, if not the link below can be used.

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

This defrost time can be used for both hot gas and electric heater defrosting so check to see which defrost type is being used.

Feb 05, 2010 | Paragon 8145-20 Defrost Timer

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