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on the connector and press the battery cover
back into place. You should hear a snap.
Changing Polar WearLink+ Heart Rate Sensor
Battery
1. Using a coin, open the battery cover by turning it
counterclockwise to OPEN.
2. Insert the battery inside the cover with the
negative (-) side outwards. Make sure the sealing
ring is in the groove to ensure water resistance.
3. Press the cover back into the connector.
4. Use the coin to turn the cover clockwise to
CLOSE.
Danger of explosion if the battery is replaced with wrong type.
Precautions
Interference During Exercise
Electromagnetic Interference and Exercise Equipment
Disturbance may occur near microware ovens and computers. Also WLAN base stations may cause
interference when exercising with RS800CX. To avoid erratic reading or misbehaviors, move away from
possible sources of disturbance.
Exercise equipment with electronic or electrical components such as LED displays, motors and electrical
brakes may cause interfering stray signals. To solve these problems, try the following:
1. Remove the heart rate sensor from your chest and use the exercise equipment as you would normally.
2. Move the training computer around until you find an area in which it displays no stray reading or does not
flash the heart symbol. Interference is often worst directly in front of the display panel of the equipment,
while the left or right side of the display is relatively free of disturbance.
3. Put the heart rate sensor back on your chest and keep the training computer in this interference-free area
as much as possible.
If the training computer still does not work with the exercise equipment, it may be electrically too noisy
for wireless heart rate measurement.
Using RS800 Training Computer in Water
The training computer is water resistant. However, heart rate measurement does not work in water. You
can use the training computer under water as a watch but it is not a diving instrument. To maintain water
resistance, do not press the buttons of the training computer under water. Using the training computer in
excessive rainfall may also cause interference.
Minimizing Risks When Exercising
Exercise may include some risk. Before beginning a regular exercise program, it is recommended that you
answer the following questions concerning your health status. If you answer yes to any of these questions,
we recommend that you consult a doctor before starting any training program.
• Have you been physically inactive for the past 5 years?
• Do you have high blood pressure or high blood cholesterol?
• Are you taking any blood pressure or heart medication?
• Do you have a history of breathing problems?
• Do you have symptoms of any disease?
• Are you recovering from a serious illness or medical treatment?
ENGLISH
62 Customer Service Information