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Using the Polar S710 in a water environment
Your Polar S710 is water resistant to 20 metres/ 60 feet.
Heart rate measurement in a water environment is technically demanding
for the following reasons:
• Pool water with a high chlorine content and seawater may be very
conductive and the electrodes of Polar transmitter may get short
circuited and ECG signals cannot be detected 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 ECG signal.
• The ECG 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.
H. PRECAUTIONS
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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.
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 Customer Care
Charter to contact an authorised Polar Service Centre.
Water resistance cannot be guaranteed after unauthorised service.
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S710 man GBR/B kopio.pm6 8/3/01, 14:3490-91