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G. PRECAUTIONS
G 93
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 Customer Care
Charter to contact an authorized Polar Service Center.
Water resistance cannot be guaranteed after unauthorized service.
F 92
Using the Polar heart rate monitor in a water environment
Your Polar heart rate monitor is water resistant to 20 meters/ 60 feet. To
maintain the water resistance, do not operate the buttons of the wrist unit
under water.
Users measuring their heart rate in water 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 short circuit, which
prevents the transmitter unit from detecting ECG signals.
Jumping into 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 an ECG signal.
ECG signal strength is individual and also varies depending on an
individual’s tissue composition. The percentage of people who have
problems measuring their heart rate is considerably higher in water than
in other environments.
49


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