Never Run Microwave Oven Empty: Operating without food or liquid forces microwave energy back into the magnetron, causing premature tube failure.
Clean Splatters from Mica Sheet Immediately: Oil and grease splatters on the right wall mica plate absorb radiation and cause burning & sparking.
Never Use Metal Utensils or Foil: Metal reflects microwaves into arcs, damaging cavity paint, glass turn tables, and high-voltage diodes.
Keep Ventilation Louvers Unblocked: Ensure at least 4 inches of clearance around top and side exhaust vents to prevent magnetron thermal shutdown.
Use Microwave-Safe Glass Lid Covers: Covering dishes prevents food popping onto the ceiling heater element and wave guide portal.
Close Door Gently: Slamming the microwave door damages interlock plastic latch fingers and micro-switches, leading to circuit tripping.