by NickA on Sat Aug 28, 2010 12:22 am
Hi Mitch,
I can't quite make out all of the parts in the second picture, but you will need to start by remove your existing cap. Inside the head you will see a banjo tube going from the group dispersion block in the middle of the head back down the group neck to exit on the right hand side. This is the return flow from the 3 way solenoid. You need to remove the banjo tube and replace it with the new pipe with the crimped end. This seals off one side of the flow to the old solenoid. I can't see the right part, but there should be a new cap to block off the outlet to the solenoid on the left hand side of the group neck. This stops inlet and outlet to the old solenoid which can now be removed. I can't tell for sure, but it looks like the trumpet shaped piece will screw back into the dispersion chamber. It looks like it has a groove for an o-ring which is a push fit into the new cap. How I think it will work is that there is an inlet hole in the cap going to the new 3 way solenoid. When the solenoid opens, water will be fed from the group head into the valve and back down the trumpet into the dispersion chamber. There should be some kind of flexible hose that will go from the outlet of the 3 way valve to the drain box to the left front of the machine. You then need to connect up the old 3 way solenoid wires to the new valve, and the old flowmeter wires to the new flowmeter. I don't know if there is a coupling to allow you to remove the old flowmeter and reconnect the pipes on the inlet to the brew boiler.
I wish I'd seen the details of this system before I made mine. I may go back and do mine agin with the trumpet directly from the valve to the group dispersion chamber.
Obviously all the normal caveats and warning apply; machine diconnected from power, inlet water turned off, machine cooled down, water pressure released from brew system, etc, etc.
Hope this helps.
