Coffee machine contact thermostats:
How do I install a contact thermostat in a coffee machine?
- Turn off the coffee machine and plug it out from the socket.
- Open the lid to get access to the boiler.
- Remove the wires from the thermostat
- Unscrew the old thermostat, anticlockwise from the boiler.
- Clean the area from any old thermal paste.
- Add the thermal paste 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.
- Screw in the new
💡 Suggestions:
- Use thermal paste 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.
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