Article View: alt.engineering.electrical
Article #336Re: pool motor starter cap
From: Lord-Data
Date: Wed, 29 Dec 2004 07:40
Date: Wed, 29 Dec 2004 07:40
59 lines
3319 bytes
3319 bytes
"Chas" <umlaut@xxx.com.au> wrote in message news:41cfd840$1@dnews.tpgi.com.au... > > "sticks" <ksbutler@iinet.net.au> wrote in message > news:41ce65cf$0$14450$5a62ac22@per-qv1-newsreader-01.iinet.net.au... >> Hi all , >> >> My pool pump has been playing up for a day or two , runs for an >> hour or so then shuts down , (overheating) >> I have taken motor out and the starter capacitor is ruptured i think it >> is >> 60uF 450VAC cant read much else , motor is a 4.3Amp Model LTP750 made bY >> ONGA pumps . >> My questions are >> >> 1. Should i just change starter capacitor and refit >> 2. What could cause overheat problem ( bearings aside) >> 3. Do i need exact replacement capacitor >> >> thanks >> > Don't know the particular motor, but it seems possible that the failed > capacitor is a "run" capacitor which should be constantly in circuit with > the second "run" winding to provide phase shift to that winding. The > motor > would be in essence a pseudo two phase motor. Failure of the capacitor > would explain the overheating. The voltage rating of 450v also indicates > a > "run" cap, but 60 uf seems a bit high.?? > > Failure of a "start" cap would mean the motor would not start, just hum & > heat up. I would expect a "start" cap to have a value of 150-200uf & > 250v. Hrm .. sorry to hi-jack the thread a bit, but just curious .. If the starter cap is gone, would it cause it to start only sometimes? perhaps failing/damaged but still able to work? Sometimes it starts fine, sometimes it does exactly what you said above .. humms for a while, then clicks off from overheating .. then re-tries a few mins later .. If you give it a flick by hand it will always start going .. and sometimes it starts fine, othertimes it jams like this .. Where do you go to get a suitable starter cap if this is the case? Thanks :) > > Have you considered contacting ONGA or one of their agents? > -- > Regards, Chas. > > > To Email, replace 'xxx' with tango papa golf. > > >
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X-Google-Thread: 10d137,9daf7dc9c36a4a4d X-Google-Thread: 103407,9daf7dc9c36a4a4d X-Google-Attributes: gid10d137,gid103407,public X-Google-Language: ENGLISH,ASCII-7-bit From: "Lord-Data" <data@ihug.com.au> Newsgroups: alt.engineering.electrical,aus.electronics References: <41ce65cf$0$14450$5a62ac22@per-qv1-newsreader-01.iinet.net.au> <41cfd840$1@dnews.tpgi.com.au> Subject: Re: pool motor starter cap Date: Wed, 29 Dec 2004 18:40:12 +1100 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-RFC2646: Format=Flowed; Original Lines: 61 Message-ID: <41d23c76$0$3610$61c65585@un-2park-reader-02.sydney.pipenetworks.com.au> NNTP-Posting-Host: 202.172.118.193 X-Trace: 1104297087 un-2park-reader-02.sydney.pipenetworks.com.au 3610 202.172.118.193:10059 X-Complaints-To: Abuse, including message IDs to abuse@pipenetworks.com Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!newsprint.newsread.com!newsread.com!news-xfer.newsread.com!newspeer.monmouth.com!203.97.37.7!news.xtra.co.nz!news1.optus.net.au!optus!news.uwa.edu.au!nntp.waia.asn.au!203.16.214.244.MISMATCH!duster.adelaide.on.net!token.pipenetworks.com!218.100.2.58.MISMATCH!not-for-mail