SIGMA PC 25.10 - Manual (Page 26)

52 www.sigmasport.com
7.4 trouBleShooting
important note
If no heart rate is shown on the display, this may be due to the
following reasons:
k The belt with the heart rate transmitter is not worn correctly.
k The sensors (electrodes) on the heart rate transmitter are
dirty or dry.
k Interference from electrical sources (high voltage lines,
railway cables, etc.).
k Transmitter battery (CR 2032) is empty (Item no. 00342).
Before starting to train, consult your doctor to avoid risks to
your health. This applies in particular if you have cardio-vascular
problems.
7.5 Changing the Battery/waterprooFing
and warranty
Changing the battery
The PC 25.10 is equipped with an „ON/OFF“ battery
compartment.
Please proceed as follows to change the battery:
Open the battery compartment by setting the arrow
in “OPEN” position. Remove the battery compartment
door and insert the new battery. Please make sure that
the + pole is visible. Insert the battery compartment
door with the arrow on “OPEN” and turn it to “ON”.
Note: If you are not using the watch for a longer time,
set the battery compartment door to “OFF” to save the
battery charge.