Microtel Series 250 - Manual (Page 8)

D. BATTERY INSTALLATION
The battery is installed at the bottom of the system in the battery tray, provided as part
of the interior chassis assembly.
IMPORTANT!
Before installing the system battery, be certain the power supply transformer is not
plugged into an electrical outlet.
Remove the four phillips head screws which secure the system’s front panel and
remove it to expose the system’s interior. Note that the panel is still connected to the
system’s main circuit board, so care must be exercised while the panel is hanging on
this “tether”. Retrieve the red and black battery leads from within the battery tray. Push
the battery lead terminals onto the new battery, BEING CERTAIN that the red lead
connects to the positive (+) battery terminal, and the black lead connects to the negative
(-) battery terminal.
Slide (do not force) the battery completely into the battery tray with the terminals pointed
DOWN into the system. If the battery is not completely seated in the battery tray, the
front panel will be obstructed and will not fit properly onto its mounting area.
A new battery will take no longer than 24 hours to gain a full charge, making it capable
of powering the dialer system through any power outage up to 6 hours in length. It
should be noted that the LOW BATTERY indicator is only valid when the 120 VAC
power is off. If the LOW BATTERY indicator stays on for more than eight hours, the
battery is in need of replacement
.
4