On 13/12/21 8:23 am, 'Andrey Sychev' via Brewtus wrote:
I received a self ranging $30 multimeter from Amazon and that shows
15v resistance and green continuity on one boiler and zero resistance
and zero continuity on the one closer to the head group. I assume this
is the failed brew boiler - is that right? Hopefully I can order the
replacement heating element from WLL and impact driver and socket from
Amazon. Any tips on getting to the heating element through the hole
would be appreciated.
I assume that's 15ohms, not volts :)
15 sounds plausible. Zero resistance should mean perfect continuity, so
that is a tiny bit confusing. If there is zero ohms, it's short.
That's the duff one.
The heating element should just unscrew and come out the hole (the giant
ones blanked off with the black plastic covers). Easy fit.
Also, with respect to the impact wrench - will cordless 18v or so will
do it? Socket is 1 7/16” and the depth doesn’t matter, is that right?
Thanks.
That's what I used. I'm surprised at how good the generic impact tool I
bought is. Remarkably useful. I didn't use an impact socket, BTW. I
used the 38mm socket I had in the toolbox. The glue like threadseal
held on sufficiently hard that I had to use the impact tool to get the
thing undone. Normally I'd expect it to loosen and then be able to use
fingers on the socket to unscrew the last bit but it resisted all the
way... Just check that the drive on the impact tool fits the socket
though! Here 36mm is the break point in the size range at which it goes
from 1/2" drive to 3/4"! So my 38mm socket is 3/4" and I needed to hunt
high and low for a 1/2 to 3/4 adaptor! Something I had, but had
actually never used before and so it was stashed "in a safe place" :)
Socket depth just needs to be sufficient to accommodate the spade
connectors or the wires (if flying lead). Any large socket will have a
ton of space, don't sweat it.
The threadseal I used on re-assembly was pink plumbing tape (PTFE).
Here in Oz you get white, yellow and pink. The pink is thick. I use it
all the time for rural irrigation threads. The boiler pressure is under
2bar, so there is absolutely no need to go crazy. Domestic water supply
runs at a much higher pressure! The nice thing with PTFE is that it is
so slippery the doing-up of the fitting is both smooth and easy. I
can't say how many wraps I did, probably 6 because I didn't want to take
it apart again and add another wrap or two....
I did use the impact tool to spin it home (because it was there, and I
didn't want to go grab a handle from the shed!). The final tighten I
did with the impact by eyeballing about 1/3rd to 1/4 a turn after the
thing hit home. Nil leakage (although I did leave the black plastic
cover off till after I had done a couple of shots and checked!).
Very serviceable machine is the Expobar. I have a friend with a blown
element and a couple of other things that need attention. He has an
Isomac Mondiale, and it is a pain....
Cheers (and merry Xmas!)
/Kevin
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