TECHNIVORM MOCCAMASTER KBG 741 Water Wont Pump

Reservoir Float Reed Switch

The Moccamaster uses a magnetic float in the water reservoir to trigger a reed switch, which completes the circuit to the heating element. If the magnet loses its flux or the reed switch contacts fail to close, the machine will not initiate the boiling process, resulting in zero water displacement. This is a common failure point that prevents the 'pump' cycle from ever starting.

Copper Heating Element (Boiler)

The heating element is the physical 'pump' in this device; it must reach temperatures sufficient to cause a phase change in the water. An internal break in the resistance wire (open circuit) prevents heat production, meaning the steam pressure required to lift water through the vertical glass tube cannot be generated.

Thermal Safety Fuse

This is a non-resettable safety component designed to protect the aluminum housing from melting during a dry-boil event. If the fuse blows due to a thermal runaway or high-resistance spike, the power path to the heating element is permanently severed, halting all pumping activity.