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Heat exchange espresso machine producing scalding brew temp, thermosyphon circulation blocked, or group head running too hot? HX machines are popular in prosumer and small café settings — but the heat exchange circuit requires specific knowledge to diagnose. Our Luthuli Avenue specialists understand HX thermodynamics and repair these machines correctly.
Call or WhatsApp: 0723 763 173
HX Machine Faults We Fix
- Brew temperature too high / scalding shots — thermosyphon running too fast, or steam boiler pressurestat set too high.
- Thermosyphon circulation sluggish or stopped — air lock in the heat exchanger tube, or scale blockage in the HX coil.
- Cooling flush not resolving temperature — HX coil scale reducing thermal conductivity even after flushing.
- Group head always cold — failed thermosyphon O-ring preventing hot water circulation to the group.
- Steam boiler pressure dropping quickly — scale on boiler element reducing efficiency, or steam valve leaking.
- Water level sight glass blocked or cracked — cleaning or replacement of the borosilicate sight glass and seal.
Our HX Machine Expertise
We descale HX coils individually using food-safe citric acid cycles, re-bleed thermosyphon circuits, adjust steam boiler pressurestat to correct operating pressure, and test brew temperature with a portafilter-mounted thermocouple.
Brands: Rancilio Classe 5/6, Expobar Office, Bezzera BZ07/BZ09, ECM Mechanika, Profitec Pro 500, Rocket Giotto.
Pricing Guide (Nairobi, 2025)
|
Repair |
Estimated Cost (KSh) |
|---|---|
|
HX coil descale & bleed |
3,000 – 6,000 |
|
Pressurestat adjustment |
1,000 – 2,000 |
|
Pressurestat replacement |
2,500 – 5,000 |
|
Thermosyphon O-ring replacement |
2,000 – 4,000 |
|
Sight glass replacement |
1,500 – 3,000 |
|
Full HX service & temperature test |
5,000 – 10,000 |
Contact
Call / WhatsApp: 0723 763 173 — Luthuli Avenue, Nairobi. Heat exchange espresso machine specialists.
"HX espresso machine repairs in Nairobi — thermosyphon serviced, brew temp verified."
