Maintenance; Dismounting The Control Panel; Replacing The Backup Battery; Fuse Replacement - Visonic Powermax Installation Instructions Manual

Z 2 2 E M E R G E N C Y
(alternating)
V I O L A T E D

5 5 5 5 . MAINTENANCE

. MAINTENANCE . MAINTENANCE . MAINTENANCE

5.1 Dismounting the Control Panel

A. Insert a wide bladed screwdriver into the hole at the
bottom of the unit (see Figure 26).
Figure 26. Releasing the Catch
B. Turn the screwdriver's handle to free the catch from the
trap and at the same time slide the control panel about
10 mm up along the bracket.
C. After sliding the cabinet up, remove the screwdriver and
pull the upper part of the cabinet away from the
bracket, slanting it towards yourself.
D. With the cabinet free of the hangers you can pull the
bottom of the cabinet away and free it from the dual
prong catch at the bottom of the bracket.

5.2 Replacing the Backup Battery

CAUTION! If you replace rechargeable cells
with alkaline (dry) cells, be sure to install the
battery-type jumper in the "DRY" position.
Failure to do so will result in rapid cell
destruction and leakage (acid leakage may
cause further damage).
Figure 27. Jumper in Dry Battery Position
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It is advisable to let the central station know that you are
conducting this test, or just disconnect the telephone line
from the PowerMax during this test, to prevent false
alarms.
Replacement and first-time insertion of cells are similar
The only difference is the necessity to remove the old cells
and to inspect the battery holder contacts and springs for
signs of corrosion.
If corrosion is found in the battery holder, clean it first with
a piece of cloth dampened with hot water and then file the
contacts clean until they shine. In extreme cases, the
entire battery holder should be replaced.
With fresh battery cells and correct insertion, the
TROUBLE indicator should extinguish. However, the
"MEMORY" message will now blink in the display (caused
by the "tamper" alarm you triggered when opening the
battery compartment lid. Clear it by arming the system and
immediately disarming.

5.3 Fuse Replacement

The PowerMax has two fuses which can be replaced if
burnt out:
Battery Fuse - 1 A, time delay type, UL recognized
Sounder Fuse - 0.5 A, time delay type, UL recognized
If any one of the fuses burns out, the trouble indicator
lights and TRBL is displayed (together with READY or
NOT READY - as the case may be). Clicking the <SHOW
/OK> button will display a FUSE TROUBLE message.
Two fuses are accessible through the rectangular opening
at the rear of the cabinet (see figure 28). To replace a
fuse, the cabinet should be temporarily dismounted (as
described in Para. 5.1 above).
Figure 28. Fuse Locations
Extract the two fuses one by one and check them visually.
In most cases, a defective fuse can be identified by the
broken conductor within the glass cylinder. If in doubt, test
the continuity of the fuse with an ohmmeter.
Replace a defective fuse with a new 3AG-type of the same
value. The relevant trouble indications will immediately
disappear.
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