piston seals replacement
The VAM and Caravel are machines with a low maintenance, limited to replacement of the seals of the piston.
Types of piston
The original seals, of course, are no longer available so the only solution is to find seals compatible or to make custom replica.
I experimented both the solutions:
- NBR commercial u-cup gaskets (different size but suitable)
- silicone custom u-cup gaskets (replica of original ones)
To proceed with the replacement of the 3 seals, must dismount the body of the piston, removing the ring that secures it to articulated shaft
Then remove the small o-ring seal on the bottom of the piston with tweezers
remove the other two seals and clean the piston from the residues of fat or limestone
insert the new gasket and refit the shaft
before reinserting the piston into the boiler lubricate the seals with silicone-based grease for food contact.
Francesco Ceccarelli. All rights reserved.