Polar S725X user manual Precautions, Wrist unit, Service

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.

Wrist unit

The estimated average battery life of the wrist unit is 2 years in normal use (2h/ day, 7 days a week). Note also that excessive use of the backlight and the alarm signals will use the battery more rapidly. Do not open the Polar wrist unit yourself. To ensure the water resistance properties and the use of qualified components, the wrist unit battery should be replaced only by an authorized Polar Service Center. At the same time a full periodic check of the Polar running/cycling computer will be done.

Batteries should be disposed of properly according to local regulations.

Service

Should your Polar running/cycling computer need service, see Customer Care Charter to contact an authorized Polar Service Center.

Water resistance cannot be guaranteed after unauthorized service.

G. PRECAUTIONS

Using the Polar running/cycling computer in a water environment

Your Polar running/cycling computer can be worn when swimming. 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.

The S1 foot pod can be worn e.g. when raining, but it is not intended for underwater use.

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