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Rancilio Coffee Thermostat

A coffee machine thermostat is a switch that controls temperature in a heating element device. It opens and closes a circuit based on temperature. Thermostats used in coffee machines use a bimetal strip. If faulty, they should only be replaced rather than repaired. They come in Klykton or screw on and safety type which cut of the electricity should boiler over-heat due to faulty thermostats.

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1 - 4 of 4 Products
Coffee machine contact thermostats:

How do I install a contact thermostat in a coffee machine?

  1. Turn off the coffee machine and plug it out from the socket.
  2. Open the lid to get access to the boiler.
  3. Remove the wires from the thermostat
  4. Unscrew the old thermostat, anticlockwise from the boiler.
  5. Clean the area from any old thermal paste.
  6. Add the Blue Star Coffee Thermal Paste Syringe to the base of the thermostat - (not the threads ).💡 Hand tighten only - ⚠️Never use a spanner as the soft brass threaded shaft will snap off.
  7. Screw in the new

💡 Suggestions:

  • Use  Blue Star Coffee Thermal Paste Syringe for better thermal contact - see below - Thermal paste will make the thermostat more effective and accurate.
  • Replace the steam thermostat at the same time - if one has failed the other won't be far behind or has failed already.

When do I replace the coffee machine thermostat?

  • You should replace the thermostat if  are not getting enough steam
  • You should replace the thermostat if the coffee tastes cold or tastes burnt

How long should a thermostat last?

  • Thermostats have a finite life. They last typically 3-4 years before they lose their accuracy and they can be damaged over time.

Do I need special tools to change a thermostat?

  • You don't need special tools to change an M4 contact thermostat, however, a thermal paste will ensure quicker and more accurate results.⚠️Never use a spanner as the soft brass threaded shaft will snap off.

What types of thermostats are used on a coffee machine?

  • Typically most coffee machines use a 4mm, screw-in,  contact thermostat.
  • Some use the Klykton thermostat - this is not screwed on but held with a bracket.

How do coffee machine thermostats work?

When the correct temperature is reached - the bimetal strip contracts and breaks the circuit, causing the temperature to fall.  A coffee machine thermostat is a switch that controls the temperature in a heating element device.