User's Guide

MAINTENANCE AND CARE

CHAINRING INstAllAtIoN

CHAINRING INSTALLATION

If you are replacing worn rings with a new pair of the same model, OR REPLACING WITH SRAM RED TT

CHAINRINGS, re-calibration is not required. If you are replacing your chainrings with a different model or

size, re-calibration is strongly recommended.

Visit Quarq.com for chainring compatibility tables, and calibration information. Your daily offset values will

be different than those you have previously noted.

When installing chainrings you must align the chainring tabs so they are in line with the crankarm.

Tighten the chainring bolts according to the manufacturer’s instruction.

MAINTENANCE AND CARE

Battery InForMatIon

• The power meter is powered by a CR2032 coin cell battery.

• The battery can be replaced without any special tools. To replace the

battery, unthread the lid counter-clockwise. Do not use any tools to pry

it open. The battery should be installed with the “+” facing out. Re-install

and hand tighten the battery cover after the battery is replaced.

• The power meter automatically switches on when the crankarms are

rotated, and shuts off after about 10 minutes of inactivity. Under normal

operating conditions the battery will last for about

300 hours of riding.

• The power meter will send a warning when the battery is low. However,

not all ANT+™ computers will display the message.

• The power meter retains its sensor ID throughout battery changes and

will remain properly paired with your computer.

Battery Care

• The battery must be installed correctly (“+” out) and have sufcient

charge.

• Periodically check the battery compartment to make sure the battery

contact is free of corrosion and moisture.

CleanIng

The power meter is very durable; however, periodic cleaning is recommended. Use a rag to wipe debris

from the power meter, crankarms, magnet, and chainrings. Brush the power meter, crankarms, magnet,

and chainrings with clean or soapy water, then rinse with clean water and let air dry. Do not use harsh

chemicals and do not use a high-pressure washer.

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