Loud grinding or rattling noise from the machine during wash.

Safety first: Turn off power and allow the machine to stop completely before inspecting moving parts.

Step-by-step checks:

• Inspect wash arms: Ensure arms spin freely and are not contacting racks or the tank. Tighten retaining nuts if loose.
• Check for foreign objects: Remove strainers and look into the pump intake for broken glass, utensils, or debris. Remove any obstructions with gloves.
• Verify water level: Low water can cause pump cavitation and noise. Confirm proper fill level and correct any fill issues.
• Listen to pump bearings: If noise persists and sounds like grinding from the motor, the pump bearings may be failing and the pump assembly should be replaced.

When to call a technician: Pump disassembly and bearing replacement should be performed by a qualified technician.