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Lasko 3520 20-Inch Cyclone Fan Questions & Answers
Removing fan blades
Joey Temal is right. After removing any small metal retaining clips (which are obvious and easily removed), you have to pull down ridiculously hard to get the fan blade off. Alternate short jerky pulls with steady downward traction.
Where is thermal fuse on lasko fan
Lasko Cyclone fans have a thermal fuse (typically 130 degrees C) placed on the stator (the non-rotating part) of the motor, connected between the input voltage line and the start capacitor. It is not user replaceable, since it is soldered, taped and attached to the armature with cable ties. When the motor overheats, the thermal fuse blows, primarily protecting against a fire hazard. Like most low cost Chinese manufactured fans, the motor uses low quality sintered bronze bushings instead of ball bearings. The bushing (each motor has 2) is surrounded by padding which is infused with lubricant, and the lubricant seeps through the bushing to lubricate the rotor shaft of the motor. Unfortunately over time the lubricant dries out or the bushing clogs, and the rotor friction increases, causing the motor current to increase. This heats up the armature coils, causing the thermal fuse to eventually blow. While the thermal fuse can be replaced with some effort and the padding re-lubricated, eventually the same thing will happen because of the low quality bushings.
Lasko 18" cyclone 1843 quit working is there a fuse
- Lasko Cyclone fans have a thermal fuse (typically 130 degrees C) placed on the armature of the motor, connected between the input voltage line and the start capacitor. It is not user replaceable, since it is soldered, taped and attached to the armature with cable ties. When the motor overheats, the thermal fuse blows, primarily protecting against a fire hazard. Like most low cost Chinese manufactured fans, the motor uses low quality sintered bronze bushings instead of ball bearings to save a few pennies in cost. The bushing (each motor has 2) is surrounded by padding which is infused with lubricant, and the lubricant seeps through the bushing to lubricate the rotor shaft of the motor when it is operating. Unfortunately over time, the lubricant dries out or the bushings clog, causing the rotor friction to increase, resulting in the motor current increasing as it tries to maintain motor speed. This heats up the armature coils, causing the thermal fuse to eventually blow. While the thermal fuse can be replaced with some effort and the padding re-lubricated, eventually the same thing will happen because of the low quality bushings.
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