Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


eph



97 posts

Master Geek
+1 received by user: 39


Topic # 228676 17-Jan-2018 07:57
Send private message quote this post

Long story short, my Karcher water blaster capacitor blew (16uF). I've been looking for replacement for last few days but without much success. One of the problem seems to be that my blaster is a bit old (K2.98M) and the new capacitors got 4 terminals instead of 2 like mine one. Since I have to use socket + housing I wouldn't be able to use the 4 terminal one.

 

Tried few companies in NZ I could find on the internets, Argon seemed to be one of the perspective ones but they don't supply directly and I'm still waiting from response from JARussell (as their distributor).

 

Found one on eBay in UK but rather buy it here and have it much faster.

 

Any ideas where can I get one?

 

 

 

Cheers

 

Click to see full size


Create new topic
2304 posts

Uber Geek
+1 received by user: 814

Subscriber

  Reply # 1941266 17-Jan-2018 08:19
Send private message quote this post

Are you able to bend and snap off 2 of the terminals?

Otherwise I'm assuming that your plastic socket is just some kind of unit that the capacitor just plugs into. Can you remove it and just crimp some quick connect lugs to the wires instead, and manually connect the wires to the capacitor.





eph



97 posts

Master Geek
+1 received by user: 39


  Reply # 1941269 17-Jan-2018 08:23
Send private message quote this post

Aredwood: Are you able to bend and snap off 2 of the terminals?

Otherwise I'm assuming that your plastic socket is just some kind of unit that the capacitor just plugs into. Can you remove it and just crimp some quick connect lugs to the wires instead, and manually connect the wires to the capacitor.

 

Well, I guess I could but the housing is supposed to protect the capacitor from water coming into the blaster (it's got a seal on it) so I'd rather keep it that way :)


 
 
 
 


3563 posts

Uber Geek
+1 received by user: 1360


  Reply # 1941292 17-Jan-2018 09:13
Send private message quote this post

Heat-shrink-adhesive crimp terminals followed by liquid electrical tape and plenty of it?





Mike

1324 posts

Uber Geek
+1 received by user: 283


  Reply # 1941548 17-Jan-2018 14:47
Send private message quote this post

Try

 

rs components
Farnel
etc

 


get it wrong, you die . Probably not , but I wouldnt bodge something in there

 

 

 

 


eph



97 posts

Master Geek
+1 received by user: 39


  Reply # 1941554 17-Jan-2018 14:59
Send private message quote this post

1101:

 

Try

 

rs components
Farnel
etc

 


get it wrong, you die . Probably not , but I wouldnt bodge something in there

 

 

 

 

Yeah, I agree, I don't really want to play with it. Thanks for the advice Mike but I don't feel competent nor do I have all the bits necessary.

 

Was surprised that one of the distributor suggested the same! "Our run capacitors have 4 terminals but you could adapt it to fit by cutting off 2 terminals and bending the remaining 2."

 

 

 

I've looked at RS components and Element14 but didn't find the same type. Thanks for the suggestions though!


5402 posts

Uber Geek
+1 received by user: 2599


  Reply # 1941940 18-Jan-2018 11:53
Send private message quote this post

eph:

 

1101:

 

Try

 

rs components
Farnel
etc

 


get it wrong, you die . Probably not , but I wouldnt bodge something in there

 

 

 

 

Yeah, I agree, I don't really want to play with it. Thanks for the advice Mike but I don't feel competent nor do I have all the bits necessary.

 

Was surprised that one of the distributor suggested the same! "Our run capacitors have 4 terminals but you could adapt it to fit by cutting off 2 terminals and bending the remaining 2."

 

I've looked at RS components and Element14 but didn't find the same type. Thanks for the suggestions though!

 

 

I think these capacitors have two terminals for single-phase, four for two phase... 6 for three phase AC.

 

I assume that the 4 terminal one (for 2 phase) would be larger than the single phase version of the same nominal capacitance and voltage rating - so an issue may be whether the thing would fit, but it should work fine as you were advised.

 

The Karcher website seems completely useless. 

 

I'd probably give Karcher NZ a call though - but from their website it seems pretty clear that they don't really want to offer service support for the stuff they sell.

 

I've ordered parts ex UK for assorted appliances, with air-mail postage stuff has arrived within about a fortnight.  This after talking to local agents who didn't have stock of parts, then wanted two weeks lead time for delivery then still charge double (or more) the UK price including postage.

 

I had a Karcher waterblaster that crapped out (pressure cut-off switch jammed).  Disassembling it to get access to the switch was a nightmare, then a double nightmare to reassemble it. They really don't make these things to be serviceable - they are throw-away items.  But that said, after I fixed it, I was given a new Karcher waterblaster from some trade promotion thing, it's still working fine after 5 years, and the old water blaster I fixed and gave away is still working fine.

 

If buying a new water blaster, you get what you pay for.  Nilfisk is reportedly better - as reflected in the price.


2304 posts

Uber Geek
+1 received by user: 814

Subscriber

  Reply # 1942124 18-Jan-2018 18:44
Send private message quote this post

Fred99: I think these capacitors have two terminals for single-phase, four for two phase... 6 for three phase AC.


I assume that the 4 terminal one (for 2 phase) would be larger than the single phase version of the same nominal capacitance and voltage rating - so an issue may be whether the thing would fit, but it should work fine as you were advised.




Sorry but that is completely wrong. 4 terminal capacitors are electrically the same as 2 terminal ones. The extra 2 terminals are wired in parallel with the first 2. The extra 2 terminals are provided simply for convenience. (connecting 2 wires to the same terminal of the capacitor) If you don't need them don't connect anything to them. Although it is a good idea to insulate them if you don't need them.

Same as a double power socket with only 1 cord plugged into it.





eph



97 posts

Master Geek
+1 received by user: 39


  Reply # 1942127 18-Jan-2018 19:00
Send private message quote this post

Aredwood:
Fred99: I think these capacitors have two terminals for single-phase, four for two phase... 6 for three phase AC.

 

I assume that the 4 terminal one (for 2 phase) would be larger than the single phase version of the same nominal capacitance and voltage rating - so an issue may be whether the thing would fit, but it should work fine as you were advised.

 




Sorry but that is completely wrong. 4 terminal capacitors are electrically the same as 2 terminal ones. The extra 2 terminals are wired in parallel with the first 2. The extra 2 terminals are provided simply for convenience. (connecting 2 wires to the same terminal of the capacitor) If you don't need them don't connect anything to them. Although it is a good idea to insulate them if you don't need them.

Same as a double power socket with only 1 cord plugged into it.

 

Yes, that's true. On some of them the connection is exposed and you can clearly see that the pair are connected.

 

 

 

Good news. After 4 days of emails and phone calls I finally managed to find one (in stock even) from Complete Services (http://waterblastersauckland.co.nz/). $19.55! Great.

 

 

 

Thanks everybody for your suggestions and help! 


1496 posts

Uber Geek
+1 received by user: 285

Lifetime subscriber

  Reply # 1942144 18-Jan-2018 20:07
Send private message quote this post

Fred99:

 

 

 

I think these capacitors have two terminals for single-phase, four for two phase... 6 for three phase AC.

 

I assume that the 4 terminal one (for 2 phase) would be larger than the single phase version of the same nominal capacitance and voltage rating - so an issue may be whether the thing would fit, but it should work fine as you were advised.

 

 

 

 

This answer is a good reason why you should not do your own electrical work.

 

The only reason why it would have 4 terminals is  that more than 1 wire could go to the same terminal.

 

It is unlikely you will find one that will physically fit unless it's a genuine replacement part, but you could easily source an electrically correct part, but the problem would be making it fit correctly.

 

 


45 posts

Geek
+1 received by user: 9


  Reply # 1942163 18-Jan-2018 20:47
Send private message quote this post

4 terminal capacitors exist for single phase, replaced one 3 weeks ago.

 

we source ours from Mt Rewinds, Tauranga.


650 posts

Ultimate Geek
+1 received by user: 136


  Reply # 1942185 18-Jan-2018 21:43
Send private message quote this post

How did it even fail, I mean whats to stop the replacement having the same issue?


2304 posts

Uber Geek
+1 received by user: 814

Subscriber

  Reply # 1943210 19-Jan-2018 00:03
Send private message quote this post

loceff13:

How did it even fail, I mean whats to stop the replacement having the same issue?



Capacitors can and do sometimes just fail. Good quality ones are designed to fail open circuit instead of short circuit. Sometimes they will part fail - less capacitance than what they should have, which causes low starting torque.

Designing capacitors is always a compromise. As thinner insulation means a smaller case size for a given value.





Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

CPTPP text and National Interest Analysis released for public scrutiny
Posted 21-Feb-2018 19:43


Foodstuffs to trial digitised shopping trolleys
Posted 21-Feb-2018 18:27


2018: The year of zero-login, smart cars & the biometrics of things
Posted 21-Feb-2018 18:25


Intel reimagines data centre storage with new 3D NAND SSDs
Posted 16-Feb-2018 15:21


Ground-breaking business programme begins in Hamilton
Posted 16-Feb-2018 10:18


Government to continue search for first Chief Technology Officer
Posted 12-Feb-2018 20:30


Time to take Appleā€™s iPad Pro seriously
Posted 12-Feb-2018 16:54


New Fujifilm X-A5 brings selfie features to mirrorless camera
Posted 9-Feb-2018 09:12


D-Link ANZ expands connected smart home with new HD Wi-Fi cameras
Posted 9-Feb-2018 09:01


Dragon Professional for Mac V6: Near perfect dictation
Posted 9-Feb-2018 08:26


OPPO announces R11s with claims to be the picture perfect smartphone
Posted 2-Feb-2018 13:28


Vocus Communications wins a place on the TaaS panel
Posted 26-Jan-2018 15:16


SwipedOn raises $1 million capital
Posted 26-Jan-2018 15:15


Slingshot offers unlimited gigabit fibre for under a ton
Posted 25-Jan-2018 13:51


Spark doubles down on wireless broadband
Posted 24-Jan-2018 15:44



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.