10. CARE AND MAINTENANCE
Your Polar heart rate monitor is a
Store your heart rate monitor in a cool and dry place. Do not store them in a damp environment, in
Service
During the
Taking Care of Your Heart Rate Monitor
•Keep your unit clean. Clean it with a mild soap and water solution. Dry it carefully with a soft towel. Never use alcohol or any abrasive material such as steel wool or cleaning chemicals.
•Keep your heart rate monitor out of extreme cold and heat.
The operating temperatures are 14 °F to 122 °F/
•Do not expose the heart rate monitor to direct sunlight for extended periods, such as by leaving it in a car.
Wrist Unit Battery
The estimated average battery life of the wrist unit is one and half year in normal use. Please note that excessive use of the backlight and the alarm signals drain the battery more rapidly. The symbol indicates low battery and that the battery should be replaced. Do not open the wrist unit yourself. To ensure the water resistance properties and the use of qualified components, the wrist unit battery should be replaced by an authorized Polar Service Center only. At the same time, a full periodic check of the Polar heart rate monitor will be done.
Note:
• If the symbol is displayed and you have switched the alarm on, the alarm will still activate one more time. After
that the alarm symbol 
disappears. If you try to reset the alarm, the wrist unit displays Battery Low. You cannot reset the alarm until the battery is changed.
•In cold conditions the low battery indicator may appear, but the indicator is deactivated when you return to a normal temperature.
•Water resistance cannot be guaranteed after unauthorized service.
Taking Care of Your WearLink Transmitter
Detach the connector from the strap when not in use.
If you use insect repellent on your skin, you must ensure that it does not come into contact with the transmitter.
75