networkcrasher wrote:Interesting. In the "DOMOBAR Dualboiler mit PID 03" photo, it doesn't have the Sirai pressurestat like mine does?
In one of the photos on that site, labeled "Bild 8 von 50", you can see the pressurestat: a small CIEME or Jaeger model. Why would you need a big, bulky Sirai if you have a PID?
Mind you the site shows two double boiler models: one vibration pump and water tank, the other rotary pump and plumb in.
networkcrasher wrote:The only odd thing I've noticed so far is the steam boiler is pre-set to 1.5bar and after pulling a shot, the boiler pressure stays where it was during the shot, even though I noted a discharge from the 3way upon moving the lever back down. If I do a flush after that, the pressure in the gauge seems to drop back to 0.
You have two boilers. The steam boiler has no connection with the 3way discharge.
The pump and brew boiler are connected to the group. The discharge is to release pressure on top of the puck so as you don't get sprayed when you take the portafilter out.
The steam boiler is connected to the steam valve and wand.
My question would be, as there is a pressurestat, if it is only for the steam boiler and why would you take a big, expensive Sirai when steam temperature might not be as critical as espresso temperature. Does the non-PID version have two pressurestats then, one for the steam boiler (Sirai?) and the other for the brew boiler?
Another interesting thing is how the brew boiler maintains group temperature. There must be a loop from the brew boiler into the group and back. But does it include a HX?
Regards
Peter
Netherlands
Europe