BESV PSA1 Manuel De L'utilisateur page 36

Rpm sensor on the Bearing of Pedal Cranks
The rpm sensor that determines the pedaling force may lose its electronic calibration and that
leads to the malfunctioning of assisted pedaling. Therefore, keep magnetic and metal objects,
such as a hammer, away from the crank bearing.
The Serial Number of New Darfon Innovation Bike is in the Warranty Card
The serial number of your new Darfon Innovation bike and its frame number validate your after-
sale (warranty) service. Therefore, check that the serial numbers of the bike and the frame are
intact when you are going to buy a bike. Do not buy a bike with a sign that these numbers are
tampered with!
• The new bike serial number is found in the warranty card.
• The frame serial number is found on the base of bottom bracket shell, the rear drop-out of the
frame, or down tube.
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