Level sensor with O-ring and flat seal SCHAERER Spare Parts 3370067068 / 3370067060

A level probe detects the water level inside a coffee machine's boiler or tank, ensuring the machine draws only the liquid it needs for each brew cycle. The probe completes an electrical circuit when submerged, signalling the control board to stop or start the water pump. This prevents overfilling, dry running, or inconsistent extraction, maintaining the correct ratio of water to coffee grounds without manual measurement.

The operator does not interact directly with the probe; it works continuously while the machine is powered on. Once installed, the probe sits inside the water reservoir or boiler, its tip submerged to the required depth. The o-ring and flat seal prevent leaks at the mounting point, keeping the internal components dry and the water path sealed. Over time, the probe's response may drift if scale or coffee oils coat its surface, so regular inspection and cleaning are needed to preserve accuracy.

This SCHAERER level probe is constructed with a copper sensing element and includes an o-ring and flat seal for secure, leak-proof installation. The copper tip conducts the electrical signal reliably, while the seals ensure the water stays contained within the machine's plumbing. No external controls are fitted to the probe itself; it connects directly to the machine's control board via the wiring harness supplied with the equipment.

The probe fits specific SCHAERER coffee machines as a direct replacement for the original part. Its role in the water management system means it must match the exact dimensions and electrical characteristics of the original to function correctly. Installation requires access to the machine's internal water tank or boiler, typically involving the removal of side or rear panels.

Cleaning involves removing the probe from its mounting, wiping the copper tip with a soft cloth to remove any residue, and checking the o-ring and flat seal for wear or deformation. The seals should be replaced if they show signs of cracking or compression. No lubricants or solvents are required unless specified in the machine's service manual.

This part is listed in the SCHAERER spare parts catalogue under the coffee machine components section.