Rinse arms do not rotate properly; spray pattern is weak or uneven.

Safety first: Turn off power and allow the machine to cool before removing rinse arms.

• Remove and clean rinse arms: Take out upper and lower rinse arms. Clean all nozzles and internal channels with a brush and descaling solution if needed.
• Inspect bearings and bushings: Check the arm hubs for wear. Replace worn bushings or complete arms if they wobble or bind.
• Check rinse pressure: Verify that rinse pressure meets Meiko specifications. If low, inspect the booster pump and filters.
• Reinstall and test: Ensure arms spin freely by hand. Run a cycle and observe rotation through the door (if possible).