Unknown Ground device inside Computer Process Controller - Page 1
Forum section: electronics / beginners

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 02:46:47 am
content: hello everyone as you can see I am a newbie in the forum, recently I began repairing a refrigerated showcase brandhillphoenix, the machine simply stopped working, so I checked the plug and saw burn marks, I thought it had been a current peak so follow the power cord until it ends, it goes into a, Process Control Computer, I researched and found that is brand hillphoenix model"ESC 3"; on the manufacturer's website there is no information about this component so opens the case and found that one of two fuses was burned but I also found a square device with four connectors that I had never seen; this device is labeled as ground, but I do not know what is, or what it does, if any of you in your vast experience could help me figure out what it is and how I can check if it works correctly, I'll greatly appreciate.You can find the pictures of this device on this link:http://marcelectroing.wix.com/electro-questionshttp://marcelectroing.wix.com/electro-questions#!CAM00063jpg/zoom/mainPage/i21y7lhttp://marcelectroing.wix.com/electro-questions#!CAM00065jpg/zoom/mainPage/i11yz9http://marcelectroing.wix.com/electro-questions#!CAM00066jpg/zoom/mainPage/i01zak

author: Prime73
author_rank: Regular Contributor
timestamp: August 02, 2014, 02:52:20 am
content: A picture is worth a thousand words ...I think it would be helpful if you can post some pics.

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 04:17:08 am
content: Quote from: Prime73 on August 02, 2014, 02:52:20 amI'm Sorry, as I'm new on this forum I'm still trying figure out how to insert pictures, I've already added the link to my personal page where you can find the pictures, sorry for all the inconveniences.

author: SeanB
author_rank: Super Contributor
timestamp: August 02, 2014, 05:04:18 am
content: 4 push on connectors, and likely 2 have a thick cable to them, and 2 have thin cabling to them. That would likely be a very common potted relay, though to make sure we would need a photo of the writing that is on the side of the device which is not in the photos. The ground next to it is for the cable to ground the plate to either the mains wiring and or the rest of the unit.

author: miguelvp
author_rank: Super Contributor
timestamp: August 02, 2014, 05:30:46 am
content: Quote from: Marc127 on August 02, 2014, 04:17:08 amYour page doesn't like direct links, so even people used to this forum would have had a hard time, but since chrome can inspect the elements there was still hope:

author: Rerouter
author_rank: Super Contributor
timestamp: August 02, 2014, 05:33:59 am
content: Looks to me to be a motor start or a power factor correction capacitor,the ground bit you see is refering to the screw on the metal is intended to be grounded and not the device,

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 05:37:48 am
content: Quote from: SeanB on August 02, 2014, 05:04:18 amThanks Sean B. I'll try to take a picture of the writing of the device, I've already google it as potted relay and seems to be very likely you're right, I really appreciate your contribution

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 05:42:21 am
content: Quote from: miguelvp on August 02, 2014, 05:30:46 amThanks man for your comprehension

author: miguelvp
author_rank: Super Contributor
timestamp: August 02, 2014, 05:42:46 am
content: You can always follow the patents:https://www.google.com/search?tbo=p&tbm=pts&hl=en&q=inassignee:%22Hill+Phoenix,+Inc.%22&gws_rd=sslMaybe there is a clue somewhere in there.

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 05:50:51 am
content: Quote from: Rerouter on August 02, 2014, 05:33:59 amFirst of all thanks for take a moment of your time to reply on my post, But I've already google it this two options you mentioned, and the images from google looks very different from the device I photograph, it would be very helpfull if you could tell me the number of part you think is likely to be or a link to a page with some information related.Greetings from mexico

author: miguelvp
author_rank: Super Contributor
timestamp: August 02, 2014, 05:51:58 am
content: Also they have some legacy documentation on their website that might be of some help:http://www.hillphoenix.com/display-cases/legacy-information/

author: nitro2k01
author_rank: Frequent Contributor
timestamp: August 02, 2014, 05:58:14 am
content: I googled for what I could make out from the label, cpc 850-3500. The first result is an installation guide for a cooling system, model ESC 3...On the last page, the connection of the relay is specified.http://icemeister.net/files/controllers/cpc/CPC_ESC3_Install_Guide_026-4700.pdf

author: miguelvp
author_rank: Super Contributor
timestamp: August 02, 2014, 06:17:14 am
content: Awesome find nitro2k01,It has the part number in there (841-S-1A-D) and here is a source:http://www.futureelectronics.com/en/Technologies/Product.aspx?ProductID=841S1AD100120VACSONGCHUAN8024216&IM=0Only $5 plus shippingand 200+ in stockEdit: bummer it wasn't 200 in stock it was minimum order is 200 units will keep on searchingBut here is the datasheet to look for the details on 841-S-1A-Dhttps://www.relayspec.com/specs/017775/841.pdfThis page shows 149 in stock but it has a request for quote on it.http://www.sourceesb.com/part/841s1ad100120vac~songchuanusaAliexpresshttp://www.aliexpress.com/store/product/841-S-1A-D-100-120VAC-100-NEW-841-S-1A-D-100-120VAC/634173_1905611065.html

author: miguelvp
author_rank: Super Contributor
timestamp: August 02, 2014, 06:44:52 am
content: I just thought of something, if the compressor failed, wouldn't that take out the relay?

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 02:00:53 pm
content: Quote from: miguelvp on August 02, 2014, 05:51:58 amThanks Again miguelvp I would check this information you find

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 02:04:01 pm
content: Quote from: nitro2k01 on August 02, 2014, 05:58:14 amWow, You're right nitro2k01 it is true, it shows a diagram where it seems clearly that is the same device, thanks a lot

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 02:07:50 pm
content: Thanks to everyone, I think that I'll be abble to troubleshoot this with all the information you found

author: Marc127
author_rank: Newbie
timestamp: August 02, 2014, 02:12:33 pm
content: Quote from: nitro2k01 on August 02, 2014, 05:58:14 amWow, you're right nitro2k01 it shows a diagram, and it seems clearly that it is the same device, thank a lot