The switch is a rocker on off switch. looking for a place to buy one.
Ok - heres my story - QPL650 crapped out mid job, checked this post, ordered the switch on the link here, didn't work.
Called Shop Vac, priced a power unit assembley ($82), took the motor apart and traced the orange wires into small junction box, replaced the little rod connecting the contacts with a 1/2" of coat hanger (white paint scaped off first) and I am back in business.
Now I am thinking $82 invested in an index fund at 6% per annum for 20 years is...................
switch on qpl650 would not turn off. I called and was advised that i needed to replace power head. I removed the switch and pried the rocker off the top. I found two very small copper contacts deep in the switch had jambed. I pulled the contacts out and made sure that they were free to move when i put the rocker back on and the switch has been working with no problems. I think I will invest the $80 myself.
Thanks for the help. The switch on my QPL625 also would not turn off. I pried open the back of it and also saw one of the two movable contact sets was stuck (mildly welded together). Using a small screwdriver was able to un-stick them. The other contact set look ok. I cleaned up the contacts with a small file and re-assembled the switch. I reversed the wires to the switch so the wires going to the once stuck contact set now go to the other contact set that was less warn. Seems like the switch contacts are under rated for the job. Also pretty chessy of shop vac to not sell just the switch.
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I was able to find the exploded part list view for this model on the following link to help in determining the part number for the switch.
http://www.shopvacint.com/parts006.asp
The part number for the switch is 8231900 and I was able to find a number of sites that carried it ranging from $0.88 to $4.99. Then they tack on shipping which cost 10-15$ which is a rack it, however I had to get it so I ordered two switches using the following supplier.
https://www.alexgs.com/_search.php?page=1&q=8231900
MY QPL60 had a switch problem also, and thoroughly cleaning the contacts seems to have done the trick.
A small (1/8 +/-) flathead screwdriver will serve to do most of the removal & disassembly of the switch itself, and a small brass or steel brush will shine up the two internal contacts nicely, once they've been freed from the plastic enclosure.
Take your time, sketch the wiring hookups, and keep in mind that (on mine, anyway) the plastic rocker gizmo itself protudes further on its bottom surface one side than the other, and that longer side should be reassembled to bear on the non-humped end of the contacts.
Http://www.fixya.com/support/t520183-shop_vac_qpl625_off
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