Change-over switch LF 3319618

A change-over switch directs the electrical supply between two circuits in professional dishwashers and glasswashers, allowing the operator to select which function or heating element receives power. In these machines, separate circuits often control the wash and rinse phases, or the upper and lower heating elements. The switch ensures that only one circuit is live at a time, preventing overload and enabling the machine to alternate between stages without manual intervention. This component is mechanical, using a rotary or lever mechanism to break one connection before making the next, a method known as "break-before-make" that avoids short circuits during transition.

To use the switch, the operator turns the knob or moves the lever to the desired position, typically marked for wash, rinse or standby. The machine then draws power through the selected circuit, activating the corresponding pumps, valves or heating elements. The switch remains in position until manually changed, holding the chosen programme until the cycle completes or the operator selects another setting. Its role is purely electrical; it does not control water flow, temperature or timing, but it determines which part of the machine's electrical system is energised at any moment.

The LF change-over switch is constructed as a compact unit with a durable housing, designed to withstand the moisture and heat of a commercial kitchen environment. Its terminals connect to the machine's wiring harness, and its actuator extends through the control panel for operator access. The materials are chosen for electrical insulation and resistance to corrosion, ensuring consistent performance over repeated use.

This switch fits a wide range of professional dishwashers and glasswashers from DESCO, DIHR, ELFRAMO, EMMEPI, EUROFRANCE, IME OMNIWASH, KOMEL, NOSEM and SO.WE.BO. It is listed in the catalogue under dishwasher and glasswasher spare parts, where it serves as a direct replacement for the original component in the specified models.