Question about Paragon 8145-20 Defrost Timer

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I have a bad Paragon 8145-20 its Sunday all I have in stock is a Paragon 8045-20. I know voltage is the same. Will the 8045-20 work? What is the difference betweentime out and temperature out. If the 8045-20 will work I am sure it will be wired differently I will need wiring diagrams. Thanks Ray erhanco@twlakes.net

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See wiring diagrams and manuals at following link:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#defrost

8145-20 is 240V time initiated, pressure or temperature terminated with back-up time termination.
8045-20 is 240V time initiated, time terminated.

So 8145-20 has pressure or temperature limit switch that connects to terminal X that turns timer off, and ends defrost cycle. This timer is for hot gas defroster that has pressure/temperature limits. Check and see what the back-up time termination is set at on 8145-20. Look at small inner dial.

The 8045-20 timer does not use pressure/temperature limit switch, and instead you have to estimate length of time you want defrost cycle to run, and set inner dial to that time. Use same time as back-up time termination on 8145-20. Of course the pressure/temperature limits would not be exact and defrost cycle might not work correctly.

Here's the change-over wiring from 8145-20 to 8045-20.
There are other wiring variants depending on equipment.
240V hot wires from breaker box are L1 and L2
a) 8145-20 L1 is at terminal 1 > move L1 to terminal N on 8045-20
8145-20 L2 is at terminal N > move L2 to terminal X on 8045-20

b) 8145-20 hot gas defroster is at NO terminal 3 > move defroster to NO terminal 3 on 8045-20
Complete the 240 circuit to defroster by connecting to L2 at terminal X

c) 8145-20 refrigeration is at NC terminal 4 > move refrigeration to NC terminal 4 on 8045-20
Complete the 240 circuit to refrigeration by connecting to L2 at terminal X

Posted on Feb 06, 2011

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1) Copy following links:
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2) 4003-0 is 120Volt timer so clock voltage is 120V
Timer can control 120V or 240V loads
Use diagram 3

3) Paragon is no longer making this timer or parts for timer.
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Open following links to identify timer and download wiring diagram:

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I need a set of trippers for a Paragon timer Model number 4001-00. Where can I get them. Thank you. My name is Jim Vivone


Google search for X2772 tripper and some places may still have them.

Paragon is no longer making timers and parts except defrost timers.
Paragon 4001-00 120Volt timer uses X2772 tripper:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#4000

Paragon 4001-00 crossover to Intermatic is T101 120Volt timer.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

Crossover wiring:
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T101 has terminals A 1 2

Paragon terminal 1 connects to Intermatic terminal 1
Paragon terminal 2 connects to Intermatic terminal 2
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I need to purchase 6 (six) more sets, 1 on and 1 off, trippers for the churches' 7 day timer. Do you need to know voltage of motor? The voltage it is switching is 240 volt.


1) You posted under paragon 7008-00 timer.
It is not necessary to know voltage of motor to order tripper

2) Model number of timer is usually located on inside door panel

3) Paragon is no longer making timers or parts.
Open following link to identify timer for sure:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#7000
http://waterheatertimer.org/Boxtype.html

4) Following link from Paragon gives links for folks who might still sell parts:
Expect some suppliers to overcharge for parts.
I've seen paragon trippers selling for $60.
http://portalgb.knowledgebase.net/display/1/index.aspx?c=15121&cpc=XobrEdQ5Lsnv624T2PBS4Exx6S5VyiL7gw3am4YYt6&cid=13013&cat=&catURL=&r=0.485034763813019

5) It might be easier to buy another time clock.
Refer to Intermatic Competitive cross reference chart.
http://www.intermatic.com/customer%20service/competitive%20cross%20reference.aspx
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6) You are working for your church, probably as a volunteer.
I also volunteer several places in my community.
I have extensive files on timers and can help you choose and install a new timer if I know the model number.
Just add a comment to this post and I will answer if needed.

Add a comment for more free help.
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.

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The 8045-20 & 8145 are 240V timers.
My maintenance buddy at McDonalds says the defrost timers are interchangeable, BUT I have not wired these particular timers.
You may want to post your question to a paid answerer who specializes in refrigeration:

This being said:
The 8045 is for 'Electric Heat Defrosting'
The 8145 is for 'Hot Gas Defrosting'

I posted the manual:
http://waterheatertimer.org/pdf/8000-series-defrost-sell-sheet.pdf

I also posted the 8145 and 8045 wiring side by side:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#8045

The wiring changeover looks like the following:
Hot1 on 8045 is connected to terminal N => move this wire to terminal 1 on 8145
There is a jumper plate on 8045 that connects terminals 1 N 2
Jumper plate on 8145 connects terminals 1 and 2
If jumper plate is missing on 8145, use jumper wire to connects terminals 1 and 2
Hot2 on 8045 is connected to terminal X => move this wire to terminal N on 8145
Other wires on 8045 that are connected to terminal X => move to terminal N on 8145
Thermostat on 8045 is connected to NC terminal 4 => move this wire to NC terminal 4 on 8145
Heater on 8045 is connected to NO terminal 3 => move this wire to NO terminal 3 on 8145
Terminal X on 8145 is bare since this goes to cycling limit switch which is not used on 8045

The wiring diagrams appears below:

geno_3245_35.jpg

geno_3245_36.jpg

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