Precautions - Polar Electro S710i User Manual

Detach the sensor from your bicycle.
1. Open the sensor by removing the two small screws, counter-clockwise,
with a small screwdriver.
2. Lift the case off carefully. Hold the sensor cover upwards so that the
PCBA (printed circuit board assembled) stays in the case.
3. Remove the PCBA carefully.
4. Press the battery holder gently. Release a hook of the holder from
the opposite side of the PCBA and lift the holder upwards. Remove
the old battery.
5. Insert a new battery with the plus (+) side facing up and press the
battery housing gently so that it is attached to the PCBA at all corners.
6. Put the PCBA back into place.
7. Check that the sealing ring stays in its groove. Replace the cover back.
8. Insert the two screws in their holes and tighten them gradually in turn.
9. Test the sensor by checking that it gives out an orange flash when the
spoke magnet passes the speed sensor.
10. Do not throw the replaced battery away with normal waste; take it to a
place where problem waste is handled.
Service
Should your Polar heart rate monitor need service, see the Customer Care
Charter to contact an authorized Polar Service Center.
Water resistance cannot be guaranteed after unauthorized service.
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H. PRECAUTIONS
Using the Polar Heart Rate Monitor in a Water Environment
Your Polar heart rate monitor is water resistant to 60 feet/ 20 meters
Users measuring heart rate in a water environment may experience
interference for the following reasons:
• Pool water with a high chlorine content and seawater are very
conductive. The electrodes of a Polar transmitter may become short
circuited which prevents EKG signals from detection by the transmitter
unit.
• Jumping into the water or strenuous muscle movement during
competitive swimming may cause water resistance that shifts the
transmitter on the body to a location where it is not possible to
pick up EKG signal.
• The EKG signal strength varies depending on the individual's tissue
composition and the percentage of people who have problems in heart
rate measuring is considerably higher in a water environment than in
other use.
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