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Expansion valve leaks constantly and low pressure

8 views 0 replies 1 participant last post by  mikul  
#1 · (Edited)
My E61 head machine (La Nuova Era Cuadra) has two problems that may be related.
  1. It cannot hold pressure. It builds pressure slowly, drops back to 0, and rebuilds non-linearly. It will eventually reach pressure based on the built-in gauge, but it won't stay there.
  2. It steadily drips water into the pan from the outlet at the bottom-front part of the machine. I think this is the expansion valve. It slowly drips within 2 minutes of turning the machine on and gets progressively worse.
Everything appears fine internally. I can see no leaks. Where the unit connects to where the water is dripping from is hidden behind riveted sheet metal.

Photos are of the pressure control. I suspect this either needs adjustment or replacement. Any advice on how to proceed is appreciated.
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