Hello all.
I have recently had my 13yo Vibiemme Domobar Super in for a service. It has a lever operated E 61 group head. It was overdue and needed quite a few bits and pieces replaced, including a washer kit as well as a new pump. To be expected with its age, so no big deal
One of the issues I was having with it prior to the service was that while pouring a shot, I would get some water bypassing the group head and spitting out of the drain chamber.
Upon picking my machine up and bringing it home I was a bit dirty with the fact that it was still venting to drain when the group head was under pressure, such as when the blind filter was installed or when pushing water through freshly ground coffee.
I took the machine back for the service person to check it out today. He pulled down and checked everything before testing it and found it to be fine. When I picked it up, he even plugged it in ran the pump and showed me. The machine wasn't up to temp, but the drain was dry with the blind filter installed and the pump up to operating pressure.
Got the machine home, plugged her in and got her up to temp only to find that the damn thing was once again bypassing into the drain. Now it isn't a massive leak, but it is annoying the hell out of me. The fact that I've spend several hundred Australian oasis to maintain it and it is doing this still is a little upsetting.
Anyhow, I've decided to pull it down myself and check things out. Just wanted to tap into any knowledge available here to help identify possible causes. Is their a Vibiemme specific issue I need to be a w are of, that perhaps my local service guy isnt aware of? Could it be a spring issue? As in the old spring becoming weak over time? Or perhaps a different type of washer material needs to be installed for the pre-infusion or drain valves?
Any help would be appreciated in trouble shooting this.
I have recently had my 13yo Vibiemme Domobar Super in for a service. It has a lever operated E 61 group head. It was overdue and needed quite a few bits and pieces replaced, including a washer kit as well as a new pump. To be expected with its age, so no big deal
One of the issues I was having with it prior to the service was that while pouring a shot, I would get some water bypassing the group head and spitting out of the drain chamber.
Upon picking my machine up and bringing it home I was a bit dirty with the fact that it was still venting to drain when the group head was under pressure, such as when the blind filter was installed or when pushing water through freshly ground coffee.
I took the machine back for the service person to check it out today. He pulled down and checked everything before testing it and found it to be fine. When I picked it up, he even plugged it in ran the pump and showed me. The machine wasn't up to temp, but the drain was dry with the blind filter installed and the pump up to operating pressure.
Got the machine home, plugged her in and got her up to temp only to find that the damn thing was once again bypassing into the drain. Now it isn't a massive leak, but it is annoying the hell out of me. The fact that I've spend several hundred Australian oasis to maintain it and it is doing this still is a little upsetting.
Anyhow, I've decided to pull it down myself and check things out. Just wanted to tap into any knowledge available here to help identify possible causes. Is their a Vibiemme specific issue I need to be a w are of, that perhaps my local service guy isnt aware of? Could it be a spring issue? As in the old spring becoming weak over time? Or perhaps a different type of washer material needs to be installed for the pre-infusion or drain valves?
Any help would be appreciated in trouble shooting this.


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