Visonic POWERMAX - User's Guide download pdf (Page 19)

DE5450U 19

9. MAINTENANCE

9.1 Replacing the Backup Battery

The PowerMax operates from the regular electrical supply

of the protected site, but incorporates an internal 9-Volt

battery that keeps it working during power failures. It is

extremely important to maintain this battery in good

condition, namely to replace it immediately upon getting

the following trouble message when reviewing system

troubles (see Para. 5.2B):

CPU LOW BATTERY

Replacing the battery is a relatively simple process, so you

do not have to bother your installer. Proceed as follows:

A. Prepare 6 AA-size alkaline battery cells (option 1) or 6

size AA, 650 mA/h Nickel-Cadmium cells (option 2) -

purchased in any hardware or electrical supply store.

B. Make sure that the keypad cover is open.

C. Insert a wide bladed screwdriver into the slot shown in

Figure 9, and turn the handle slightly to force the right

edge of the left-hand cover up. This should dislodge the

two catches and free the right edge of the cover.

Warning! Do not try to dislodge the left side of the

cover first! This will break the angled legs at the left.

Figure 9. Prying the Cover Loose

D. Swing the cover up as shown in Figure 10, then pull

free the angled legs at the left and put the cover away.

The inner lid will now be in full view (see Figure 11).

Figure 10. Removing the Left Hand Cover

Figure 11. Battery Compartment Lid

E. Remove the screw that secures the battery compartment

lid (Fig. 11), swing the lid up and pull it away. You have

thus gained access to the battery holder (see Fig. 12).

ATTENTION! Removal of the lid will start a “tamper”

alarm - the trouble indicator will light and both

“memory” and “trouble” will flash in the display window.

If you interrogate the system at this stage by clicking

the <OK> button, “CPU TAMPER ALARM” and “CPU

TAMPER OPEN” will be displayed, in addition to “CPU

LOW BATTERY”.

Figure 12. Battery Compartment and Battery Holder

F. If a battery pack is used (optional), replace it with the

new Visonic 7.2 V battery pack (if a non-Visonic battery

pack is used, its battery snap should have proper

polarity). If 6 batteries are used, pull the battery holder

out and replace all the 6 battery cells - 3 at the top and 3

at the bottom of the battery holder.

Make sure that the flat (negative) end of each cell is

pressed against a circular spring and the capped

(positive) end of each cell is pressed against a flat

contact.

CAUTION! If you replace rechargeable cells

with alkaline (dry) cells or vice versa, mount

the battery-type selector in the correct

position (CHRG for rechargeable cells and

DRY for alkaline cells - see Figure 13).

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Visonic POWERMAX - User's Guide Page 19

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