Home baristas
Machines that used to pull good shots and no longer do.
Espresso
Espresso & Coffee Machine Repairs in Cape Town
Espresso machines fail in predictable ways: pressure drifts, seals harden, valves scale up and steam paths block. The trick is finding which of those is causing the symptom in front of you.
ExoCoffee repairs pump-driven espresso machines — single boiler, heat exchanger and dual boiler — for home baristas, offices and cafés around Cape Town.
Who this is for
Small cafés and bars
One or two group machines that need to be reliable through service.
Roasters and training spaces
Machines that must hold temperature and pressure consistently for tasting and training.
Common espresso machine problems
Leaking
Water under the machine, a dripping steam wand, or leaks past the portafilter during extraction.
Poor pressure
Brew pressure sitting well under nine bar, thin crema and fast, sour shots.
No heat
Element, thermostat, thermal fuse or sensor failure leaving the machine cold.
Excessive heat
Overheating, steaming from the group or scorched, bitter coffee from a runaway thermostat.
Pump problems
Loud vibration pumps, rotary pumps losing output, or a pump running with no flow.
Steam problems
Weak steam, wet steam, a wand that spits, or a steam valve that won't seal.
Group-head issues
Blocked shower screens, worn group gaskets, a dispersion path clogged with coffee oils and scale.
Electrical faults
Tripping earth leakage, failed switches, control board or pressure-stat faults.
Scale
Lime build-up in the boiler, heat exchanger and flow path — the leading cause of repeat failures in Cape Town.
Worn seals
Hardened group gaskets, boiler seals and O-rings that leak or bypass under pressure.
What we test
- Static and dynamic brew pressure, plus pump ramp behaviour
- Boiler pressure and brew temperature stability across consecutive shots
- Steam and hot water valve sealing, and steam dryness
- Group head flow rate, shower screen and dispersion block condition
- Expansion valve, OPV setting and one-way valve operation
- Scale load in the boiler and heat exchanger, and the incoming water quality
How an espresso repair runs
1. Symptom and history
What changed, when, and what the machine does under load — not just at idle.
2. Pressure and temperature test
Measured against specification before anything is opened up.
3. Strip and inspect
Group, valves and seals inspected for wear, scale and blockage.
4. Repair, rebuild, re-test
Parts replaced, machine reassembled and shot-tested before it goes back.
Machine types
- Single boiler / dual use machines
- Heat exchanger machines
- Dual boiler machines
- Lever and semi-automatic machines
- One and two group commercial machines
Common brands through the workshop include La Marzocco, Rancilio, Nuova Simonelli, Sanremo, Gaggia, Elektra, Breville, DeLonghi and Siemens.
Cape Town service area
ExoCoffee works from Durbanville and covers the greater Cape Town area, including the Northern Suburbs, Bellville, Brackenfell, Kraaifontein, Tygervalley, the city bowl, the Southern Suburbs, Stellenbosch and Somerset West. See the full service area.
Questions
The usual causes are a worn or scaled pump, a leaking over-pressure valve, a blocked group or shower screen, or a perished seal letting water bypass. Pressure is measured first so the right part is replaced.
It usually means the group gasket has hardened or the portafilter is no longer seating. It is a small repair, but leaving it lets water track into places it shouldn't.
Yes. Left long enough, scale blocks heat exchangers and valves and can burn out elements. Descaling is far cheaper than replacing a boiler.
More answers on the coffee machine repair FAQ.
Related services
Coffee machine servicing
Descaling, seals and pressure checks before things break.
Breville repairs
Home espresso machines like the Barista Express.
Commercial repairs
Multi-group machines in trading environments.
Get your espresso machine pulling properly again
Send us the brand, model and what the shots are doing — we'll tell you what to expect.