Here’s a maintenance checklist you can actually use, broken down by daily, weekly, and monthly tasks. Print it, tape it near the machine, and assign it to whoever opens and closes.
Daily Tasks (Every Shift)
Start of day:
- Purge the group heads for 10-15 seconds before pulling the first shot. This clears overnight residue and brings the group up to temperature.
- Check portafilter baskets for cracks or clogs. A hairline crack in a basket changes extraction and is easy to miss.
- Wipe down group gaskets with a damp cloth. Dried coffee oils harden fast and eventually tear gaskets early.
- Check the water softener bypass valve is in the correct position. Plenty of Bay Area cafes have hard water; running on bypass even one day accelerates scale inside the boiler.
- Verify steam wand O-rings are intact. A weeping wand wastes steam pressure and can scald staff.
End of day (backflush):
- Run a blind filter backflush with group head cleaner (Cafiza, Puly Caff, or equivalent). One cycle per group, minimum. This is the single highest-ROI maintenance step you can do. Note: if your machine has E61 group heads, check your manual on detergent backflush frequency. Daily detergent use on E61 groups strips the cam lubrication and causes premature wear; water-only backflushes are fine daily, but detergent cycles should be less frequent on that design.
- Remove and rinse portafilters and baskets in hot water, then leave them out of the group overnight so rubber gaskets don’t compress under load.
- Wipe down drip trays and flush the drain.
- Log anything that felt off: low pressure, unusual noises, a group that ran slower than the others.
Weekly Tasks
- Soak portafilter baskets. Drop them in a Cafiza solution for 20-30 minutes. Even with daily rinsing, oils accumulate in the basket holes and tighten the flow path over time.
- Clean steam wand internals. Purge, then soak the tip in clean water and run another purge. On high-volume machines, do this twice a week.
- Check grinder burrs. Run a purge grind and look at the distribution. Uneven clumping or a noticeably coarser grind at the same setting usually means the burrs are wearing. Burr replacement intervals vary a lot by machine, burr material, and volume. Most commercial burrs need attention somewhere in the range of 600-1,200 lbs of coffee, but track yours against your actual usage rather than a fixed calendar.
- Inspect group seals visually. Look for cracking or flattening. If a portafilter leaks around the collar when you lock it in, the group gasket is likely done. Replacing it is a quick job on most machines, though older hardened gaskets can take longer to extract.
- Flush the hot water tap and steam boiler relief valve. A quick open-and-close keeps them from seizing.
Monthly Tasks
- Descale or check softener salt levels. How often you need to descale depends entirely on your water hardness and volume. In most Bay Area municipalities the water is moderately hard. A water test strip costs almost nothing and tells you whether your softener is actually working. If you’re descaling with citric acid or a commercial descaler, follow the machine manufacturer’s cycle instructions, not a generic guide.
- Inspect boiler sight glass (if your machine has one). A cloudy or stained sight glass can obscure low water conditions that will eventually expose and burn out a heating element.
- Pull and inspect the shower screen. Unscrew it, soak it, scrub the dispersion block behind it. Scale and coffee oils accumulate here and directly affect extraction evenness.
- Check all accessible water lines for mineral deposits at connections. A small buildup at a fitting will eventually restrict flow or cause a slow leak.
- Review your shot log or POS data. If yield is drifting and you’re not changing your grind or recipe, it’s usually the machine, not the coffee. Catching pressure drift early is much cheaper than waiting for a no-flow call on a Monday morning.
What You Can Do Yourself vs. What You Shouldn’t Touch
Most of the daily and weekly items above are owner-safe. Backflushing, soaking baskets, swapping group gaskets, and checking water hardness are all reasonable.
Where it gets complicated: anything involving the boiler, the pump (pressure adjustment included), the PID or temperature controller, electrical connections, or the expansion valve. Adjusting pump pressure without a portafilter pressure gauge and some experience is easy to do wrong. Opening a boiler on a pressurized machine is dangerous if you’re not trained.
Internal descales on plumbed-in machines also carry risk. Running a descale cycle incorrectly can deposit loosened scale in the wrong place, clogging lines you can’t easily reach. If you’re not sure whether your machine needs a full internal descale or just a cleaning cycle, ask a tech before you start.
When to Call a Pro
Call a technician if you see any of these:
- Pressure gauge fluctuating significantly during extraction
- Steam boiler not reaching or holding temperature
- Any error on the display that doesn’t clear with a reboot (look up the code in your manual before calling, if it’s documented there)
- Water under the machine
- A group head that runs significantly faster or slower than the others despite the same grind and dose
- Burning smell
For Bay Area cafes, these issues are worth addressing quickly. A machine running under poor conditions produces inconsistent shots, which your baristas will try to compensate for by adjusting the grind, which just masks the real problem.
Diagnostics can take up to a week; most repairs run 3–4 weeks. That is exactly why we recommend preventive maintenance: a maintained machine does not sit in a repair queue for a month.