Replace brewing piston seal
The seal on the brewing piston (O-ring) can be changed by the technician as
part of the service maintenance 1.
If needed, the seal can be changed by the customer himself. The procedure is described in the User
manual.
The seal can be changed with just a few, simple motions:
1. Start changing the seal
Care > Change of seals…. > Group (left or right)
2. Follow the animation and clean / change the O-ring
3. Replace the portafilter
Replace brewing piston
The brewing piston is changed out by the technician as part of the service maintenance 2.
Replacing the brewing piston takes just a few, easy steps:
1. Open the Service menu
Service > Service routines > Piston change ... > Group (left or right)
2. Follow the animation and change the brewing piston
3. Replace the portafilter
Important technical service instructions:
To drive down the brewing piston, the portafilter 2 (double portafilter) must be inserted without brewing sieve, retaining spring, and
insulation insert. This is the only way to ensure that the brewing piston can travel down as far as necessary without an error message.
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