On Wednesday, January 29, 2025 at 07:42:07 AM MST, Morgan Skinner <morgan@...> wrote:
Hello folks, I¡¯m new here having just purchased a couple of second hand Hammer machines, a B3 Perform and an N4400.
Overall I am delighted with both machines, however the B3 has an odd (and very unsafe) quirk in that sometimes it won¡¯t switch off, using any of the ¡°off¡± switches (there are three in all on this model).
I leave the machine unplugged unless I¡¯m using it, and unplugging does NOT necessarily reset it back to a normal condition - if I plug it in again, some times it will start immediately.
As far as I can tell there have been no alterations to the wiring of the machine, and a lot of the time it works just as expected, however sometimes it goes rogue.
The only thing I can think is that (maybe!) the ¡°on¡± switch contact(s) are somehow ¡°locked¡± together in the ¡°on¡± position inside the switch, and thus override any of the ¡°off¡± switches. Just to be clear, once the saw is in this ¡°I¡¯m staying on
whatever you do¡± mode, I cannot switch it off using the off button next to the on switch, the emergency off button at the side of the saw, or the emergency off button at the rear of the saw. Both of the latter are of the ¡°push to stop, rotate and pull to re-enable¡±
variety.
Any help you can give will be greatly appreciated - as it stands the saw is a bit on the deadly side.
Thanks in advance for any suggestions you can provide.
Regards, Morgan
