Group Head & Brew Boiler Maintenance
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LUCCA M58: Replacing the Brew Boiler Element

Below you will find instructions for replacing the brew boiler element in the Quick Mill LUCCA M58 espresso machine. (Difficulty ☕☕)

Tools Needed:

1. Drain the boilers.

2. Unplug the electrical leads from the old heating element.
LUCCA M58: Replacing Coffee Boiler Element


3. Use a 30mm socket and impact driver to unscrew the old element from the boiler.

LUCCA M58: Replacing Coffee Boiler Element


4. Replace the element and the gasket; you'll need to tighten the element with the impact driver to get it tight enough not to leak.
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5. Power the machine on and allow the PID to initialize, then immediately lift the brew lever and allow water to flow from the group head for 30 seconds *before the machine begins to heat*.

*Be careful not to skip this step. There is no auto-fill function for the machine's brew boiler. Failing to re-fill the brew boiler after replacing the heating element will damage the new element and could cause further damage to the machine.