FELLOW OPUS CONICAL BURR GRINDER General Troubleshooting

Opus Replacement Outer Burr

Over time, the outer burr carrier accumulates microscopic layers of rancid coffee oils and chaff. These oils increase the coefficient of friction and act as a binder for coffee fines, leading to 'exchange retention' where new grounds are trapped by old residue. Replacing the outer burr restores the smooth flow path and original shearing geometry.

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Fellow Opus Catch Cup

The catch cup in the Opus utilizes a specific magnetic alignment and anti-static lid system. If the internal coating or magnetic seating is compromised, the grounding path for ionized particles is interrupted, causing grounds to cling to the internal chute walls via static electricity instead of dropping cleanly into the vessel.

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Inner Burr Carrier Assembly

Axial play or 'slop' in the burr carrier can lead to burr misalignment, particularly at finer espresso settings. This misalignment generates an excessive amount of 'fines' (micro-particles) which have a much higher surface-area-to-mass ratio, making them more susceptible to static cling and oil adhesion inside the grinding chamber.

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