Wash and rinse arm assembly boss LF 3243493

A wash and rinse arm assembly boss secures the rotating spray arm inside professional glasswashers and dishwashers. The arm spins on a central hub, driven by the force of water jets that emerge from its nozzles. As it turns, the jets sweep across every surface, dislodging residue and carrying it away. The boss acts as the mounting point, holding the arm in position so the water pressure can drive the rotation without wobble or misalignment.

In use, the operator loads racks of glasses or crockery, closes the door and starts the cycle. Water is pumped through the arm, which begins to spin, spraying hot detergent solution during the wash phase and clean rinse water afterwards. The boss remains stationary while the arm revolves around it, ensuring the jets maintain a consistent pattern and coverage across the load.

The boss is a single component, typically machined from corrosion-resistant material to withstand constant exposure to water, heat and cleaning chemicals. It threads or clips into the base of the wash tank, providing a secure anchor for the arm assembly.

This LF boss is a direct replacement for the original part in the listed models of AFI, EUROSYSTEM, HILTA, IME OMNIWASH, NOSEM, SAB ITALIA, SO.WE.BO., SOTAL, STORME and UNIC glasswashers and dishwashers. It fits both under-counter and hood-type machines where the specified wash arm assembly is used.

During routine maintenance, the boss should be inspected for wear or mineral deposits that could impede the arm's rotation. If the arm no longer spins freely, the boss may need cleaning or replacement to restore full washing performance.