Lasko Fan Fires

© 2006-2012 Dr. Ray Franco, PhD., PE    r.a.franco@ieee.org


In February 2006, the U.S. Consumer Protection Safety Commission (CPSC) in cooperation with Lasko Products Inc. issued a recall of 5.6 Million Lasko Box and Pivoting Floor Fans: Recall Notice of Lasko Fans. The fans were sold under the names: Lasko, General Electric, Galaxy (Wal-Mart) and Air King. They were manufactured between January 1999 and July 2001 and sold through February 2004.

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Model Numbers of Lasko Recalled Fans.


Exemplar Lasko Model 3733 - 20-Inch Box - Manufactured January 1999 - Meets the Criteria of CPSC Recall.

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Front of Lasko Model 3733 Exemplar Fan.

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Back of Lasko Model 3733 Exemplar Fan.

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Top of Lasko Model 3733 Exemplar Fan.

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Bottom of Lasko Model 3733 Exemplar Fan.

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Front of Motor Frame.

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Back of Motor Frame - "Lasko" in Raised Letters.

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Side of Motor Frame and Start/Run Capacitor
Lot No. BF-6, P/N. 2031232S.

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Where the Capacitor and Speed Wires enter the Motor Frame.

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Congested Area at the Back of the Motor Winding were the Speed Wires, Start/Run Capacitor and Thermal Fuse are connected to the Motor Winding.

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Excess Motor Wires - A Potential for Wire Chafing.

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Back View of Motor Winding.

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Font View of Motor Winding.

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Side View of Motor Winding.

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Lasko Motor Thermal Fuse 115°C (239°F).

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Composite View of 1999-00 Lasko Fan Motor.

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Schematic of Lasko Fan 3733 Motor.
Resistances: Run = 71 Ω; Aux = 162 Ω; L1 = 43 Ω; L2 = 56 Ω.

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Front Bearing of Lasko Motor.

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Front Bearing with Retaining Cover removed.

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The Bearing is lubricated by Cotton Felt soaked in Oil.

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Composite View depicting all of the Pieces of the Bearing.

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The Fan contains approximately 1.8 lbs. of Polypropylene Plastic.

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This Fire was started with a Cigarette Lighter.
The Plastic burned for 30 Minutes.

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To Prevent Fan Fires, Lasko Now Places a Fuse in the Power Cord Plug.
A Pigtail Power Cord with a Fuse is Added to the Recalled Fans.

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The Inside of Lasko's Patented Fuse Plug.

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The Fuse is Inline with the 120 Volt Conductor.

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The Fuse Size is 2.5 Amps, 250 Volts.

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Plugs with a Fuse have "A1" stamped into one of the Blades.


Case History: F06-029 - Lasko Model 3733 - 20-Inch Box Fan Fire - Manufactured January 2000 - Meets Criteria of CPSC Recall.

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Lasko Fan Fire - Joyce Crawford, 15061 Starlight Ave., Wilmer, AL 5/21/06.

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Area of Origin.

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Fan Identification: Model 3733, ECN 37, 2000-01.

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Fan Frame and Motor.

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Front of Motor.

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Back of Motor - "Lasko" in Raised Letters.

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Side of Motor.

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Thermal Fuse 115°C (239°F).

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Motor Winding.

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Copper Beads and Electrical Cut Wires.

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Microscope View of Two Copper Beads and Cut Wires.

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Microscope View of the Two Copper Beads.

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Rotor and Bearings.

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The Front Bearing exhibited Rotational Scaring.


 

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