To replace the main battery 1. Switch power off. 2. Loosen the screw that holds the battery compartment cover in place, and then remove the cover(Fig. 1). * Do not turn switch on until you complete step 7 of this procedure. 3. Slide the tab in the direction indicated by the arrow (Fig. 2). 4. Insert a thin, pointed non-metallic object into the opening (A) so that the old battery can be removed (Fig. 3). * Do not slide the tab while battery is not installed! 5. Wipe a new battery with a soft, dry cloth, then install the battery into the unit. Make sure that its positive (+) side is facing up (so you can see this side). 6. Slide the tab back to the origin. 7. Replace the battery compartment cover and fix it with its screw.
Tab Battery compartment cover
Main battery
Opening (A)
Figure 1
Figure 2
Figure 3
To replace the back-up battery 1. Switch power off. 2. Loosen the screw that holds the battery compartment cover in place, and then remove the cover (Fig. 1). * Do not turn switch on until you complete step 7 of this procedure. Back-up battery
3. Remove the back-up battery precaution sticker, and then loosen the screw that holds the back-up battery cover in place. 4. Remove the back-up battery cover and then remove the old battery (Fig. 4). 5. Wipe a new battery with a soft, dry cloth, then install the battery into the unit. Make sure that its positive (+) side is facing up (so you can see this side). 6. Replace the back-up battery cover and fix it with its screw. Do not forget to replace the battery precaution sticker. 7. Replace the battery compartment cover and fix it with its screw. Back-up battery cover Figure 4
