Machines blowing fuses.

[torquil]

One of my No18 grinders is constantly blowing fuses on start-up, does anyone have any experience of this and possible fixes? It starts for a second then blows the plug fuse, with a new fuse in it'll start up once fine then blows the fuse the second time. I thought it must be the start capacitor but it's been painted over at some point so I can't tell any of the spec to order a replacement. 

I'm waiting to hear back from Peter at Siserve but not heard anything for a while so thought I'd try here for any good advice in the meantime. Thanks

 

[petercoulson]

In touch 

[torquil]

2 hours ago, petercoulson said:

In touch 

Many thanks, very helpful as always!

[soleman2]

I have just purchased 2nd hand Standard no.18 band scourer 240v single phase which runs fine then next time blows fuse in plug, would be interested if you found a solution, many thanks.

[petercoulson]

If you're running it on a 3 pin plug you shouldn't, it needs to be hard wired to a minimum 16amp supply.

[soleman2]

Thanks Peter at Siserve,that’s how it came but will get my electrician to make good, much appreciated mate.

[keithm]

We always recommend using isolators as shown in the pics.  These are safe, recommended by H&S/insurance companies and give you more control over isolating power supply and disconnection in the event of a serious electrical issue.  All our machine (single phase-blue) or (three phase-red) are supplied with plugs to fit these types of sockets, NOT bare wired, it's the most sensible way to supply machinery.

 

In the past, you may have been able to use your band scourer using a 13amp supply, however, as the motors get old, they generally draw more current, which is why it now blows fuses, the problem normally occurs on start up when the current drawn to start the motor is at it's highest.  Never ever run machines form these sources.  As it happens, I have seen a Lynx finisher for sale on e-bay where the seller is claiming it can be run from a three pin plug, good luck with that!!! Dangerous and asking for trouble, but that's e-bay for you!

 

NO cooker sockets or THREE PIN, domestic plugs please!

[soleman2]

Thanks for advice Keith at Standard.

[torquil]

Thanks for the advice Keith. I have run them for years off 13amp sockets without issue so couldn't work out what had changed but the ageing motor makes sense. The electrician is coming to upgrade the wiring and all should be well. 

[soleman2]

Had electrician fit 20amp circuit breaker at fuse board then run cable to isolator switch at machine and now all seems to to be good, thanks for advice Keith.

[keithm]

Pleasure chap