Hello everyone
Since I sorted out the Faema Eurostar Ambassador, I am onto my next adventure to rebuild a Isomac Millenium.
Stupid me, I ran the tank dry when I was trying to descale the machine.
When I am tracing the line to try and prime the pump, I found this thing and a solenoid between the tank and the pump.
What is it for?





Thanks
Tom

any idea on what that is? @JRising @Stefano65 ?
I have since bypassed it (plumbing pump directly to tank) and everything still works....
The black part and the solenoid valve was zip tied to the pump itself....

Looks like a pressure regulator. The additional solenoid would seem to indicate that the machine was plumbed in and the pump bypassed - so water from house plumbing goes to pressure regulator. The pressure regulator would drop the line pressure down to, say, 3 bar, and the solenoid valve would open whenever the machine's electrics would normally turn on the vibration pump.

Hard to confirm that with just the pic, but that's my guess.

Your guess is 100% correct.

Thanks for the reply!
In that case I would simply remove the regulator and solenoid from the machine as I will be running with the tank only.
Now that also explains why they drain the OPV to drip tray.

So with this kind of set up, is the control box the same between the tank version and the plumb version? Also, after I remove the solenoid, can I just leave the wire hanging or do I need to put some kind of resistor in between so fool the control box?

The plumb-in bits look to be an add-on kit, not part of the original machine. If so, then removal is the reverse of installation, e.g.,

Hello there
yes correct that's an additional plumbed-in-kit part (the pressure regulator)
not part of the "original machine" configuration

In regards of the running dry,
check the thermal cut off above the Heating element
on the same note it can be replaced with the manually resettable one as well instead of the "one time" only one.

PS Vapore continuo is the translation of what we refer to an heating exchanger style of machine.

P I see a whitish spot on the boiler, is not a pin hole right?

Thanks everyone for the reply, now it makes sense! So from the video, I guess the brain is the same and the wire for the additional solenoid is tapped from somewhere else.

stefano65 wrote: In regards of the running dry,
check the thermal cut off above the Heating element
on the same note it can be replaced with the manually resettable one as well instead of the "one time" only one.

Is this the thermofuse you are talking about? What would be a suitable resettable one to keep in the parts box in case the original one fail?

stefano65 wrote: PS Vapore continuo is the translation of what we refer to an heating exchanger style of machine.

Ahhhh good to know!

stefano65 wrote: P I see a whitish spot on the boiler, is not a pin hole right?

Does pin hole always leak? Cause I have put the machine to operating boiler pressure (1.3 bar) for over an hour and I do not see any leak

Finally received the Rocket E61 Group Service Kit from bluestar coffee. Got a working machine now and I can pull a shot tomorrow morning!

The kit came with the following parts, and some of them does not fit on this Isomac group. Luckily the critical bits I needed (the three valves) fit well so I can replace the ones on the machine which has worn down a lot at the contact surface with the cam.

1 x E61 piston teflon gasket # 2
1 x Gicleur steel gauze # 3
1 x E61 group mushroom Gicleur 0.06m # 4
1 x E61 piston ring - Green # 6
3 x E61 piston teflon gasket large # 8
2 x E61 group piston spring upper # 9
1 x E61 mushroom valve 55mm # 10
1 x E61 brass cam lever rod 87mm # 19 (Doesnt fit. The square portion is 0.020" too big for the Isomac lever. I may be able to machine down a bit to use next time.)
2 x Cam rubber gasket # 22 (Only used one in Isomac)
1 x Brass cam sleeve # 23 (Doesnt fit, too long for the Isomac)
1 x Spring # 26 (Doesnt fit, too long for the Isomac)
1 x E61 brass piston valve triangle # 30
1 x Brass sleeve # 32
1 x E61 brass piston drain valve square # 35
1 x Spring # 36 (Doesnt fit, too long for the Isomac)
1 x Brass discharge valve # 37 (Doesnt fit, too long for the Isomac)
1 x E61 piston teflon gasket lower # 38