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Post by ChrisJ on Aug 3, 2013 16:50:40 GMT
New heaters I bought for my Monitor top CA machines per Allan's recommendation. Applied Thermal Solutions, INC. Part number 20902 12mm diameter x 2.5" long 12 watt @ 120 volt. 10" fiberglass leads. Contact Ben Midulla at 1-888-934-3281 These heaters will also work on DR machines as well. UPDATE : 10/29/13Unfortunately one of my 6 heaters was received DOA. While this is not too big of a deal I have received very poor support from ATS on the matter and am essentially stuck with a bad heater. Because of this I will be making my next purchase from somewhere else like : cartridge-heater-online.com/
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Post by cablehack on Aug 21, 2013 0:13:09 GMT
It is also possible to make a replacement heater using 10W wirewound resistors, as I did for my CA-2-B15. A pair of 560 ohm 10W resistors in series provides a total resistance of 1120 ohms, with a power rating of 20W. Connected across a 120V supply, 1120 ohms will dissipate 12.8W. To construct the new heater, the resistors are connected in series. Because the heater is inserted into the compressor case, the supply wires have to emerge at one end. Hence, one wire has to run alongside the resistors. This has to be insulated in fibreglass tubing in view of the high temperature. The exposed connections have to be covered in a high temperature epoxy. I used "Quick Steel", but there are a number of others. Also, the join between the resistors needs to be covered in epoxy, not only for insulation, but mechanical strength. It is essential that the connections are insulated perfectly, and that the insulation will withstand the heat. Otherwise, the fridge could become live at 120V. The square section body of the resistors I used was a very close fit into the compressor well. Seeing as any further rust build up could prevent extraction, I ground off the corners to make a slightly looser fit. The supply cable connections are covered in heatshrink tubing. For improved efficiency, the compressor well and resistors were coated in thermal paste of the kind used with power semiconductors mounted on a heatsink. Attachments:
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Post by ChrisJ on Aug 31, 2013 3:11:51 GMT
I just installed a heater in my form A machine to get it cookin for the evacuation. To my surprise, I can't seem to solder to the heater leads? I wonder if they are stainless?
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Post by allan on Aug 31, 2013 3:26:17 GMT
I just installed a heater in my form A machine to get it cookin for the evacuation. To my surprise, I can't seem to solder to the heater leads? I wonder if they are stainless? I solder everything on my rewires but have never tried to solder to heater wires. Interesting. Have always used orange wire nuts on those.
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Post by ChrisJ on Oct 30, 2013 20:46:57 GMT
So I found a company called Cartridge Heaters LLC. They provided me with this data sheet on what I think would be a great DR or CA heater. I do not want to provide the quoted costs as I'm sure they will change over time but they are very reasonable. This time I requested 15W @ 120v as it seems like 12W @ 120V is on the low side especially for a CA machine. They said these could be produced in 7 to 10 days which is also impressive. Cartridge Heaters LLC. 701 Brickell Ave. Suite 1550 - Miami, FL 33131 Tel. (305) 728-5208 - Fax (305) 728-5288 Attachments:datasheetcj133.pdf (504.41 KB)
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Post by silverage on Dec 24, 2013 4:38:10 GMT
Any experience to report? I guess I'm in the market sooner and not later. Is there a minimum order?
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Post by ChrisJ on Dec 24, 2013 4:44:55 GMT
I don't know if anyone has tried Cartridge Heaters LLC. yet. I know they were very helpful via email and I don't think there was a minimum. However the cost for one will likely be a lot more than for say 5 or 6.
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alex
New Member
Posts: 44
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Post by alex on Sept 11, 2014 23:05:59 GMT
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Post by 2030vision on Sept 12, 2014 10:28:06 GMT
I just installed a heater in my form A machine to get it cookin for the evacuation. To my surprise, I can't seem to solder to the heater leads? I wonder if they are stainless? I solder everything on my rewires but have never tried to solder to heater wires. Interesting. Have always used orange wire nuts on those. THEY COULD BE NICKEL MY COMPANY MAKES SOME HIGH TEMP CABLES AND WE USE NICKEL WIRE AND IT HAS TO BE CRIMPED NOT SOLDERED
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alex
New Member
Posts: 44
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Post by alex on Sept 15, 2014 15:46:23 GMT
Hi all, I just received a quote from Cartridge Heaters. They will make one heater or many. One question I have is - as I have not done this before - how long to request the leads? The heater itself will be 120 V, 15 Watt, 2.5 inches long, a half inch in diameter. The standard lead length is 12 inches or about 30 cm. Is this long enough? Also, the leads will be glass fiber-Nickle. Not sure how much the heaters are if I buy more than one, but one will be about $50.
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Post by allan on Sept 15, 2014 20:09:07 GMT
Hi all, I just received a quote from Cartridge Heaters. They will make one heater or many. One question I have is - as I have not done this before - how long to request the leads? The heater itself will be 120 V, 15 Watt, 2.5 inches long, a half inch in diameter. The standard lead length is 12 inches or about 30 cm. Is this long enough? Also, the leads will be glass fiber-Nickle. Not sure how much the heaters are if I buy more than one, but one will be about $50. 12 inch leads is plenty. But be careful about the 1/2 inch od of the heater. I have some machines that will only accept the 12mm diameter. I order 12mm and 12.5mm diameters
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alex
New Member
Posts: 44
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Post by alex on Sept 17, 2014 14:42:00 GMT
Thanks for the tip about 12mm diameter. Which sources do you use? Have you used Cartridge-Heaters? Are there others I should investigate?
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Post by coldspaces on Sept 17, 2014 17:38:50 GMT
So far I am still using this Supco 15 watt drain heater in my 32 DR with 134a. Seems to work just fine. Ran all last winter in a cold garage without any issues. Even when it got so cold the compressor didn't start for hours or days there was no noise at start up. Retails for about $20 By the way it Is a Supco product # SH201
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Post by allan on Sept 17, 2014 22:36:04 GMT
Thanks for the tip about 12mm diameter. Which sources do you use? Have you used Cartridge-Heaters? Are there others I should investigate? I am still using my APS stock that I understand is now gone.
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alex
New Member
Posts: 44
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Post by alex on Sept 18, 2014 2:58:31 GMT
Coldspaces, do you think the Supelco drain heater will work with the CA-2 unit? In looking online, it seems the heating element is 18" long. One would have to fold it up to fit in the space. Is that the case? The price seems better!
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