DavecUK The pump can sometimes be a ****** to prime. With machine off at switch, pull lever down. Then use switch to start/stop pump and follow process below.
Pull of the gauze filter on inlet tube, squirt some water down it to fill the pump chamber as the pump is running. When it picks up, stop pump, fill the tube with water, pop gauze filter on and drop it in full tank.
@Eiffel Possibly a hint for the unofficial FAQ as it seemed to have worked?
All updated! 😉
The bit on the lever shaft damage was already in the FAQ, but it remains tentative as we’re waiting to hear from Paolo and his supplier for a complete resolution.
If you make a single post with the link the the FAQ and 1 Paragraph describing it, I will lock it and pin it to the top of the lever machines section. This gives people a second way to find it.
Update: i had the issue again, Opened the top. Touched all connections to check them. All seemed oki. Machine didn’t work. I waited it to cool down and turned it and it worked. I suspect now its an overheating issue. Any idea DavecUK ?
Thanks
Berryterry Update: i had the issue again, Opened the top. Touched all connections to check them. All seemed oki. Machine didn’t work. I waited it to cool down and turned it and it worked. I suspect now its an overheating issue. Any idea DavecUK ?
Can you just clarify exactly what happened, I don’t want to make the assumption the pump just won’t work and yet does when it cools down? which I believe was the problem? I seem to remember there wasn’t a “satisfying” resolution to me, for the problem, as it just started working again when you moved wires about?
I think you definitely need to let ACS know so they can log the problem.
DavecUK so basically when the lever is pulled nothing happens. I did what i tried last time (trying to nudge the wires ) it didn’t work. Turned it off, cooled off and worked i guess its overheating that is causing this
Berryterry Assume the little lever is touching the back of the lever - gently!
@LMSC yes, everything that can be visually checked had been indeed. And it was a matter of the machine cooling down. It happened on the same occasion of pulling 8+ shots for the guests i had.
Berryterry so basically when the lever is pulled nothing happens. I did what i tried last time (trying to nudge the wires ) it didn’t work. Turned it off, cooled off and worked i guess its overheating that is causing this
Yeah, I found the fix before less than satisfying. As LMSC says, make sure the little lever is being moved by the big lever when you pull it down….you can even force the little lever back yourself and see if the pump starts.
If it doesn’t….this is how the system should work:
When you pull the lever down, you open the sealed brew circuit…the pressure drops and the pressurestat moves to the normally closed position and sends power to the pump transformer, or possibly indirectly via the main board to the pump transformer. I am not certain which route because I have not seen the production electrical schematic.
The obvious places for bad wiring are the solenoid, where the wires from the solenoid go, wires to the transformer, or even wires from the transformer. Be careful, do all checks with the machine unplugged.
As always make sure you report it to ACS, even if it just a loose wire.
Berryterry The pressurestat does drive the transformer for the pump directly, so there is 240V across the stat, this powers the transformer and the pump goes on. This means the control board and SSRs can be eliminated as the cause. There are only 4 things it can be in order of most likely to least likely:
