Troubleshooting-Rancilio-Silvia-Head-Leak

From Top Of Machine

A leak from the top (or head) of the machine typically indicates a loose connection or broken part inside the machine. If the leaking is coming from between the portafilter and the grouphead then refer to the section of this article which covers changing the group gasket. Otherwise follow these steps to identify the source of the leak. It may be necessary to run the machine with the top removed in order to identify the leak.

1. Turn the machine off and unplug it.
2. Open the top of the machine. Check for any loose hoses, broken hoses or hoses with pinhole leaks, or any other fittings that are leaking.
   1. If you find a loose hose reconnect it to the appropriate fitting.
   2. Hoses that are broken or have pinhole leaks will need to be replaced.
   3. Other loose fittings can typically be resecured by screwing the part down. Plumbers tape or a sealing compound may be necessary to provide a good seal.
3. Examine the boiler assembly.
   1. If there is leaking coming from between the boiler and the grouphead assembly try tightening the allen screws that secure the boiler and grouphead together.
   2. If it continues to leak then the o-ring that seals these two assemblies has slipped out of place or is worn out and needs to be replaced. Try unscrewing the boiler and the grouphead by removing the eight allen screws mentioned in the previous steps. Clean the o-ring off and reseat it and screw the boiler assembly back into place. If this does not resolve the leak then the o-ring is worn out and needs to be replaced.
4. The boiler may be cracked. If you find a crack anywhere on the boiler then the machine was exposed to subfreezing temperatures without being drained properly or the machine was dropped. The boiler will need to be replaced.
5. Examine the steam wand to the right of the boiler. If this is leaking make sure the fittings are tightened down securely.