Hi everyone,
I recently ran into some problems with my Gaggia Classic pre 2015.
Anytime I start pumping (without a portafilter inserted or even when group head is taken off), the OPV opens and water flows back into the tank. The water flow from the group head thus only starts with a delay of a few seconds. I am under the impression that no water should flow back into the tank when no portafilter is inserted. The same happens when I turn on the steam switch. The OPV stays open and I can't get any pressure to steam.
I thought maybe the OPV is set too low so tried screwing it all the way in which should result in the 15 bars from the pump but the OPV still opens up when pumping and steaming. I have measured with a pressure gauge and I cannot get anything above 7 bars.
On another forum, I read that it might be scale in the OPV so unscrewed the parts, descaled and cleaned them but that didn't help. Everything inside the OPV looked fine and came out without a problem.
I am running out of ideas now what could fix this. I also couldn't find any holes that would let in any air in the hose from the tank to the pump and the tube from pump to OPV.
Has anyone had a similar problem and could share some wisdom? Thanks!
I recently ran into some problems with my Gaggia Classic pre 2015.
Anytime I start pumping (without a portafilter inserted or even when group head is taken off), the OPV opens and water flows back into the tank. The water flow from the group head thus only starts with a delay of a few seconds. I am under the impression that no water should flow back into the tank when no portafilter is inserted. The same happens when I turn on the steam switch. The OPV stays open and I can't get any pressure to steam.
I thought maybe the OPV is set too low so tried screwing it all the way in which should result in the 15 bars from the pump but the OPV still opens up when pumping and steaming. I have measured with a pressure gauge and I cannot get anything above 7 bars.
On another forum, I read that it might be scale in the OPV so unscrewed the parts, descaled and cleaned them but that didn't help. Everything inside the OPV looked fine and came out without a problem.
I am running out of ideas now what could fix this. I also couldn't find any holes that would let in any air in the hose from the tank to the pump and the tube from pump to OPV.
Has anyone had a similar problem and could share some wisdom? Thanks!
