Equipment Maintenance
Core concepts
Equipment care protects flavor and safety. For espresso machines, know daily routines: backflush with water, then with detergent on a schedule; clean group heads and screens; purge steam wands immediately after use and soak tips; check water filtration and softener; monitor boiler pressure and pump pressure. For grinders, brush burrs and chutes regularly, and understand that burr wear changes particle distribution and therefore extraction - burrs are consumables replaced on a usage interval, not only when they break.
Scales and brewers need calibration checks and descaling where applicable. Water quality is central: hardness (scale), alkalinity (buffering), and TDS affect both machine health and taste. Softened water protects boilers; over-softened water can taste flat and corrode in some cases.
Traps in questions
- Forgetting that detergent backflushing is periodic, while water backflushing is frequent - mixing up the cadence is a common distractor.
- Assuming a grinder only needs cleaning when performance visibly drops; gradual burr wear silently shifts extraction.
- Ignoring that descaling frequency depends on water hardness, not a fixed calendar interval alone.
- Overlooking safety: never open a pressurized boiler, and always depressurize before service.
Worked example
Shots suddenly run faster and taste sour with the same recipe. Before changing the recipe, check the grinder: worn or dirty burrs and a clogged chute change particle size. Clean, then reassess; if the machine is old, evaluate burr replacement.