polar speed sensor battery?

[rock]

me speed sensor (both actually) seems to be giving me some hassles, keeps losing connction and and then sarting again......as if I have com to a stop. Could the battery be worn out? is there a battery? don't tell me its a agent service?

 

ta.

[dirtrider]

It is a agent service ! they do go flat and needs to be replaced at some stage .

[rock]

any idea on cost?

[dirtrider]

Was less than a R100 last year . and they even replaced mine free of charge cause it had a crack !!

[Road Warrior]

The older models have a battery that you can replace yourself. I'm not sure about the new sensors but I imagine that you will be able to replace it without much hassle. The monitor (watch) battery has to be replaced by a specialist, preferrably the Polar agents in Midrand. Move a magnet pass your speed sensor and check for a little red light on the sensor to respond. If it doesn't then your battery may very well be flat.

[Guest Big H]

There is no Polar Agent in Lagos so I have to replace tehse things myself. If you do you it yourself will lose your warranty. Be very sure that the little seal or oring in well in place and that there are no dirt. I clean mine with a slightly damp earbus by wiping the surfaces very lightly.

 

When you re-assemble make sure you do not tighten the screw threads by overtightening. If you do that you have to buy a new sensor.

 

A a extra precaution I stuffed poster putty into the screw holes to form a plug to keep water out. I also taped the joint with a 5mm strip of insulation tape binding it tightly with two layers. I just think all this will ensure water to stay out.

[Guest Big H]

From the Polar Website on the Manual for the Polar S 725 X:-

 

<?:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Battery Replacement for Speed Sensor<?:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

The estimated average battery life of the speed sensor is 2500 hours of

use. We highly recommend you send the speed sensor to an authorized

Polar Service Center for battery replacement, where the unit is tested

after the battery has been replaced. However, if you prefer changing

the battery yourself, please follow these instructions carefully:

Detach the sensor from your bicycle.

1. Open the sensor by removing the two small screws, counterclockwise,

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 Customer Care

Charter to contact an authorized Polar Service Center.

NB!!!!!!

Water resistance cannot be guaranteed after unauthorized service.

Big H2008-01-07 09:34:31