Interesting design piece 
Really?
I guess the few Levers (One with this same Astoria based group) I have running very happily and simply from external tanks and internal or external pumps must be special then. One of those is soon to go to an internal tank to go with the fitted pump to make it more simple again for outside jobs. Apart from the Tank and Pump a few simple hoses and fittings and a little careful (240V) wiring is all that is needed.
If like most of the modern machines the lever has an Auto fill fitted then it is actually a simple matter to parallel wire the Pump in with where the inlet water solenoid is. Contact ratings on the Auto fills I have are all more than up to running a small pump. This pump only needs to be 2-3 bar capable so while a procon or similar will do it they are really overkill for the job.
Without seeing under the hood I suspect it may not be a HX design in the sense of some pumped machines and will share more in common with my Fiorenzato Lever. That is boiler water is fed back through a sealed tube through the boiler and into the head rather than a dipper tube like some other groups.

Originally posted by Talk_Coffee
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I guess the few Levers (One with this same Astoria based group) I have running very happily and simply from external tanks and internal or external pumps must be special then. One of those is soon to go to an internal tank to go with the fitted pump to make it more simple again for outside jobs. Apart from the Tank and Pump a few simple hoses and fittings and a little careful (240V) wiring is all that is needed.
If like most of the modern machines the lever has an Auto fill fitted then it is actually a simple matter to parallel wire the Pump in with where the inlet water solenoid is. Contact ratings on the Auto fills I have are all more than up to running a small pump. This pump only needs to be 2-3 bar capable so while a procon or similar will do it they are really overkill for the job.
Without seeing under the hood I suspect it may not be a HX design in the sense of some pumped machines and will share more in common with my Fiorenzato Lever. That is boiler water is fed back through a sealed tube through the boiler and into the head rather than a dipper tube like some other groups.

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