User manual

Provider Manual
24
5.5 PLUGGING THE HARMONY IN
You can use AC power or DC power to operate the Harmony.
WARNING: The DC power option is not intended as a battery backup
when using AC power.
5.5.1 USING AC POWER
Complete the following steps to operate the Harmony using AC power:
1. Plug the pronged end of the AC power supply’s cord into an electri-
cal outlet.
WARNING: Never plug the Harmony AC power supply into an outlet
that is controlled by a wall switch.
2. Leaving a small amount of slack in the cord, connect the cord on the
other side of the power supply to the AC inlet on the Harmony, as
shown in Figure 5–7.
NOTE: The external AC power supply features an AC cord retainer to
provide strain relief for the AC power cord.
Figure 5–7 Plugging in the AC Power Supply
5.5.2 USING DC POWER
Complete the following steps to operate the Harmony using DC power:
CAUTION: Only use a Respironics-supplied DC boost converter.