Optimum Time OS 2 Serie Instructions page 6

OS Series 2.qxd 11/11/05
ELECTRO-LUMINESCENCE (E.L.) DISPLAY
The watch is equipped with an E.L. display. As soon as the 'PROG' button is pressed (regardless of whether the
watch is in timer mode), the EL nightlight will glow blue for aprox 3 seconds.
TO CHANGE THE BATTERY
1. Take note of which way up the caseback fits. Using a cross-point screwdriver carefully remove all
screws from the timer, and remove the case back from the case front to reveal the battery.
2. There is a protective label over the battery. This is required for insulation purposes and must be
replaced when the new battery has been fitted
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3.
Remove the old battery and replace it with a new one making sure that the +ve contact faces upwards.
(Avoid holding the battery so that your fingers touch both the +ve and -ve contacts at the same time).
4. The battery type is a 3.0 Volt CR2032 Lithium Battery.
5. Remember to replace the insulating label
6.
Replace the case back making sure that the battery is correctly fitted, that the rubber seal around the
case back is seated properly, that the case back fits without interference and is the correct way up. If
possible add some silicon grease or Vaseline to the rubber seal.
7.
Replace the screws taking care not to over-tighten them to the point of stripping the thread.
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