flyingbrick Posted June 9, 2014 Share Posted June 9, 2014 What capacitor should I be buying as need a new one. 3hp single phase from a compressor. The original one is unreadable. Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted June 9, 2014 Author Share Posted June 9, 2014 End thread. Got free info from a pro 1 Quote Link to comment Share on other sites More sharing options...
hmmmnz Posted June 9, 2014 Share Posted June 9, 2014 why not share said pro info?? i'd be interested to see if it matches up with what i know 1 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted June 9, 2014 Author Share Posted June 9, 2014 This is what I got back after a chat. Our Chinese single phase 1.5kw 2 pole motors have a 300uf 250v start cap and a 50uf 450v run cap our Italian made 1.5kw 2 pole have a 125uf start cap and a 35uf run cap. If I had to guess I would go 40uf 450vac we have these in stock they are $28 Plus Gst, And earlier, Does your motor have two capacitors? If so the run capacitor is 450V low micro fared say somewhere around 20 to 50 if it is the start capacitor it will be 250v and high micro fared around 200 the start capacitor is in series with the start switch if the start switch is faulty it holds the start cap in and that will kill it after a few seconds. 1 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted June 9, 2014 Author Share Posted June 9, 2014 Additionally.. Everyone I have spoken to has said these fail pretty often. Many of these blokes had bought whole new motors or compressors thinking these caps were pricy as fuck Lol 2 Quote Link to comment Share on other sites More sharing options...
Nominal Posted June 10, 2014 Share Posted June 10, 2014 Bought a new starter cap a couple of weeks back for spa pool pump. Cost about $40. Then found the newish one I took of the last (rooted) pump in the shed. Grrr. Quote Link to comment Share on other sites More sharing options...
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