Polar Electro Polar Tempo User Manual page 13

... HEART RATE READING BECOMES ERRATIC OR
EXTREMELY HIGH?
You may have come within range of strong electromagnetic
signals which cause erratic readings on the wrist receiver
display. Check your surroundings and move further away from
the source of disturbance. Precautions, page 21.
... THE DISPLAY IS BLANK OR FADING?
Have the batteries checked. Service, page 29.
... IF THE BATTERY OF THE WRIST RECEIVER
MUST BE REPLACED?
We recommend having all service done by an authorized
Polar Service Center. However, if you wish to use a local watch
shop or battery replacement center or to change the battery
yourself, please follow these instructions.
Water resistance cannot be guaranteed after an
unauthorized service.
You need the following equipment:
• Battery type: Panasonic CR 2032, 3V
• Piece of dust-free pad
• Small Phillips or standard screwdriver
• Plastic tweezers (recommended)
1. Put the unit on a clean, dust-free
pad on an even table surface
and open the back cover by
removing all four screws
counterclockwise with a small
screwdriver.
2. Lift the spring gently upwards and
simultaneously drag the plate
slightly downwards in a
clockwise direction.
Drag downwards
24
Tempo manual USA 179120.A 24-25
3. Put a new battery in the battery housing
plastic tweezers. Do not use metal tweezers because they
may shortcircuit the battery. Note also that bare fingers
cause grease and dirty the battery which weakens the
contact.
4. Assemble the plate back by turning it slightly counterclockwise
until the spring locks the battery in its proper position.
5. Reset the receiver by pressing
the reset spring against the
round golden pad for 1
second. Be sure that the
spring touches the pad.
6. Check the display.
7. Make sure that the sealing ring is not damaged and it is in
its groove the flat side against the front cover all the way
around the housing.
8. Put the back cover in its place. The Polar text on the outside
of the back cover is in the upright position with respect to
the buckle side of the wrist strap. Push the back cover with
your finger to make sure that it is correctly in place.
9. Put the screws in their holes and tighten them slightly from
opposite corners. Do not tighten them completely to ensure
even closing of the cover. Do not force the screws or damage
the existing threads.
10. After having checked that the back cover is firmly in its
place, tighten the screws securely from opposite corners.
Lift the spring
+
side up, using
Press the spring
against the pad
is displayed.
1.10.1998, 11:24
25