skydragondave Senior Member Joined: 18 Feb 2013 Posts: 168 Location: Ontario, Canada Expertise: Professional
Espresso: Commercial Only Grinder: Commercial Only Roaster: Has Garanti HG5
Posted Sun May 18, 2014, 12:54pm Subject: Re: 2002 Victoria Arduino "Athena Leva" restoration
Notes: -Cadmium-coated steel piston springs were replaced with stainless units, to prevent rust particles from causing abrasive wear to the pistons, seals and liners. -Single-throw switch was replaced with double-throw switch to provide a heat-off autofill for initial filling. -Additional steam knob shims were added to provide 1/8 turn freeplay before wand activation, to reduce wear. Stainless washers and cotter pin were used. -Do not flip and re-use black rubber bibb seals used in the steam valve flutes and expansion valve. Use the red silicone seals as a replacement. -Check valves can be rebuilt using the green nylon check inserts available from Ascaso or LF. Note correct orientation during assembly and final installation. -Lubricate the piston seals with a light coating of Molykote 111 on a quarterly basis by removing the four allen bolts and lifting the group out, to prevent early piston seal failure. -Arduino boilers are a HX design with no injector. This means that pre-infusion pressure is the same as mains water pressure, and can be fine-tuned to your preference by utilizing a line pressure control device in the water inlet.
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