Alarm System; Start-Up; Battery Status; Low Battery - Freestyle MN126-1 Service Manual

2.3

Alarm System

An audible alarm sounds if FreeStyle has a low battery, senses no
inspiration, or if performance is outside specifications. If an alarm sounds,
observe which lights are on. The visual and audible alarm conditions are
explained in detail below.
2.3.1

Start-Up

A one-second, audible alarm sounds to indicate start-up. FreeStyle begins to
operate when the alarm stops.
2.3.2

Battery Status

To check the level of charge of the internal battery, press the BATT button on
FreeStyle's keypad. The battery gauge / indicator(s) LEDs above the BATT
button illuminate from 25-100% to indicate the level (capacity) of the internal
battery. At less than 25% capacity, the 25% LED blinks.
2.3.3

Low Battery

As the battery power approaches a low level, a ½ second beep is emitted every
five seconds, and a yellow LED on the battery gauge / indicator(s) will blink
for a ½-second every five seconds. When this occurs, the patient is instructed
to connect the FreeStyle Universal AC or/ DC power supply or change to
another source of oxygen. The low battery alarm will continue for
approximately 2 minutes before FreeStyle stops operating.
2.3.4

Discharged Battery

When the battery is discharged, the unit shuts down. Before this occurs, a ½
second beep sounds every ½ second and the yellow battery LED blinks at the
same rate until any one of the 1-3 settings on the keypad are pressed. After the
alarm is turned off, connect the FreeStyle unit to its Universal AC or / DC
power supply or change to another source of oxygen immediately. When the
FreeStyle unit is connected to the Universal AC or / DC power supply,
FreeStyle operates and the internal battery recharges simultaneously.
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FreeStyle Service Manual MN126-1 E