Question about Paragon 8145-20 Defrost Timer

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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 wiring and there is not a diagram. I need to know which wires go where on the timer. The diagram that is on the inside of the case goes to the timer itself not to the contactors or compressor. I need to know what wires go where (i.e. LINE 1 from the contactor to what number on the timer, etc...). Thank You!

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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.

Posted on Nov 13, 2010

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The unit I'm working on has a 1 month old 8145-20ex and now the unit wont go into defrost - The compressor and the evap do not stop and the heaters do not energize. I'm thinking the defrost termination...


Copy following links:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#8145
http://waterheatertimer.org/pdf/How-to-test-Paragon-8145-timer.pdf
8145-20 is 240Volt defrost timer.
The defrost cycle will not begin. This implies that trippers are not in place, or trippers are worn out.... or limit switch is stuck ON or solenoid inside timer has gone bad.
Test across terminal N to X for 240Volt. Because voltage here will stop defrost cycle by activating solenoid inside timer, but continuous voltage will also stop next defrost cycle from beginning. Disconnect wire on terminal X and see if defrost cycle will begin at next tripper. If defrost begins, then limit switch is bad.
Gene
h

Aug 06, 2013 | Hardware & Accessories

1 Answer

My 8025 gets hung up on pins


Contact Uni-line for replacement clock motor
http://waterheatertimer.org/Paragon-timers-and-manuals.html#42000

Advantage 8025 mechanical timer that gives short time intervals from 1 minute to 27 minutes.

If you are using for septic tank pump, then you have 1 circuit, so you do not need the 8025 to control 3 circuits.

You can install digital timer (EH40 240Volt, or EH10 120Volt) and also get 1 minute intervals.
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html

Mar 22, 2013 | Paragon 4001-0G Defrost Timer

1 Answer

I have a Paragon 8145-20 D-Frost-O Matic installed in on my walk-in freezer. The ice is accumulated on the fins of the freezer. Now it run for 11 minutes then stop for 3.5 minutes. I think the stop time...


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

2) Typically the 8145-20 defrost cycle is time-initiated and starts when tripper pin located on outer part of dial passes the time-of-day point.
Defrost cycle terminates or ends when pressure or temperature switch activates. This is also called the cycle limit switch.
http://waterheatertimer.org/images/8145-20-wiring-600.jpg

3) So your situation sounds like the pressure or temperature switch is not working correctly.

4) The 8145 timer also has 'time termination' setting. This red tripper is located on inner part of dial.
Usually the 'time termination' is used as back-up system if the pressure or temperature switch fails so that defrost cycle will not continue melting everything in freezer.

5) To solve problem until pressure-temperature switch is replaced, you can disconnect wire on terminal X, and then set 'time termination' for correct length of time by experimenting.

Dec 27, 2012 | Paragon 8145-20 Defrost Timer

1 Answer

I WANT TO BYPASS THE DEFROST MODE IN MODEL 8145-20


Unsure what you are trying to do.
Open following link to see how this timer works and how to wire it.
http://waterheatertimer.org/Paragon-timers-and-manuals.html#8145

If you want to by-pass defrost cycle, remove trippers from dial and timer will not enter defrost state.
Or remove wire that is connected to terminal 3.

Oct 07, 2011 | Paragon 8145-20 Defrost Timer

1 Answer

Without doing the minimal setting test to see if a time clock works how do you test a time clock with defrost termination the x terminal


8145-20 is 240Volt defrost timer:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#8045

You are testing the 8145-20 timer.
The timer dial should rotate continuously. Trippers on dial rotate around. When they reach the trip switch, the timer starts the defrost cycle.
Terminal 3 has power during defrost cycle.
Terminal 4 has no power during defrost cycle.
With 240Volt timer, terminals 1 and 2 and N and X test for live power to ground at all times.

The limit switch is connected to terminal X and to terminal N.
During the defrost cycle, the limit switch measures the pressure or temperature.
When pressure or temperature reaches the set point, the limit switch closes the circuit and this trips the solenoid inside timer. The solenoid turns off the timer relay, and the defrost cycle ends.
At this point the timer turns off the defrost, and sends power to the refrigeration.
Terminal 3 has no power during refrigeration cycle. (The opposite of defrost cycle).
Terminal 4 has power during refrigeration cycle.
Test these terminals for power to ground. One or the other should have power at all times, but not both.

If timer will not enter defrost cycle, make sure the X-3596 trippers are not worn down.
Disconnect the wire to terminal X and see if defrost cycle will start.
Test terminals 3 and 4 again and see if removing wire from X caused a change.

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Sep 14, 2011 | Paragon 8145-20 Defrost Timer

1 Answer

My Paragon jw30 timer runs continuosly no matter what setting. Is there a fix?


1) There are no repair parts for JW series percent cycle timers.
Paragon is no longer making parts or timers, except defrost timers. JW is no defrost timer.
Open link below for copy of manual and help identify model number
http://waterheatertimer.org/Paragon-timers-and-manuals.html#JW

2) The JW is still being sold, so somebody must be making it.
Google search: JW cycle timers

3) A cycle timer is meant to cycle continuously, and the percentage on-off repeats over and over without stopping.
If you want to override timer, you can add a switch or another timer on electric line either before or after cycle timer.
This way you can control what hours the cycle program operates.

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you via e-mail while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 24, 2011 | Paragon JW-30-00 Percent Cycle Timer

1 Answer

The micro switch is bad and i need a new one...where can this be purchased?


1) Paragon is no longer making timers and parts except defrost timers.
You posted under JW-30-00 series cycle timer, which is not a defrost timer.
http://waterheatertimer.org/Paragon-timers-and-manuals.html#JW

2) JW timers are still sold on internet. Some Paragon timers are still being sold, and other manufacturers will continue making various Paragon products under new names.

3) Intermatic cross reference shows CT1000 is replacement for JW-30-20
http://www.intermatic.com/customer%20service/competitive%20cross%20reference.aspx

http://www.intermatic.com/~/media/files/intermatic/products/sell%20sheets/time%20switches/ct1000%20sell%20sheet.ashx

4) Tork makes the ACT series cycle timer
http://waterheatertimer.org/Tork-timers-and-manuals.html#cycle

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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.
Fixya is always less expensive than a service call.

Feb 11, 2011 | Paragon JW-30-00 Percent Cycle 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 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

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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