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4th April 2021, 02:04 PM #1Senior Member
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- Jan 2017
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- Sunshine Coast
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Start cap for 750W (1HP) dust extractor
G'day
I think i found the reason my dust extractor wont start.
dusty-cap.jpg
Trouble is... it exploded exactly where the cap info is eg uf & watt info.
Can anyone tell me what cap i need, and possibly where to buy one on the Qld Sunshine Coast?
Thanks
Graham
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4th April 2021 02:04 PM # ADSGoogle Adsense Advertisement
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4th April 2021, 02:35 PM #2China
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- Dec 2005
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- South Australia
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- 4,474
Any electrical wholesaler will have one take the old one plus the the motor specs with you.
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4th April 2021, 02:35 PM #3Senior Member
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- Jun 2012
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- Dungog
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- 274
Sometimes the value of the capacitor is on the motor data plate, it’s voltage is usually 440v
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4th April 2021, 02:35 PM #4
The start cap on my old dusty blew up a couple of years ago. I eventually tracked down a $$ replacement cap, but I was warned when purchasing it that the motor itself was probably the fault. It did in fact blow again soon after replacement. I would be thinking of finding a motor rewinder to check out the motor first or just go out and buy a new one.
Franklin
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4th April 2021, 02:47 PM #5GOLD MEMBER
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- Apr 2014
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- Little River
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- 78
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- 1,205
A typical value for a start cap for a 1hp motor would be from 140-180µF with about a 300v rating. This value is not critical so anything in that range would do.
Google "electric motor repair" and you will find plenty of suppliers.
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4th April 2021, 05:25 PM #6Senior Member
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- Jan 2017
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- Sunshine Coast
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Thanks for all the prompt replies.
I'll hit the electrical wholesalers etc 1st thing Tuesday.
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4th April 2021, 06:50 PM #7SENIOR MEMBER
- Join Date
- Apr 2015
- Location
- Brisbane
- Posts
- 304
I found local electrical supplier did not have much choice but found one that suited my pool pump. For my very old bandsaw motor, got one through Machinery House spares.
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4th April 2021, 10:10 PM #8GOLD MEMBER
- Join Date
- May 2012
- Location
- Melb
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- 1,544
Washing machine repair places also have similar rated caps. As Bodhan mentioned the value isn't overly critical generally, more so that the voltage rating has a good overhead.
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5th April 2021, 12:03 AM #9SENIOR MEMBER
- Join Date
- Sep 2011
- Location
- Hervey Bay
- Posts
- 250
When my compressor cap went (just like yours) my local Jaycar had the exact replacement for about $20
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