ResMed RPS II, User Manual, Page: 4 / 13

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Setting up
CAUTION
• Ensure the RPS II and the device are turned off before setting up.
• When the RPS II is plugged to the mains power supply, ensure all cables are
properly connected.
Charging the battery
Refer to illustration C .
1. Attach the power supply unit adapter to the DC plug and connect into the battery
DC input/output port.
2. Connect the AC or DC power cord to the power supply unit.
3. Plug the other end of the AC or DC power cord into the mains power outlet.
Notes:
• Charging takes less than 4 hours from 0% battery level to greater than 95%.
• To discontinue charging, unplug the power cord from the mains power outlet.
Providing power to the device
Refer to illustration D .
1. Select the correct output voltage for your device using the voltage output selector
from the RPS II rear panel.
2. Connect the appropriate DC output cable into the battery.
3. Connect the other end of the DC output cable into the device.
4. Set the DC on/off switch to on.
Providing backup power to the device (for systems with both AC and DC inputs)
Refer to illustration E .
1. Select the correct output voltage for your device using the voltage output selector
from the RPS II rear panel.
2. Connect the appropriate DC output cable into the battery.
3. Connect the other end of the DC output cable into the device.
4. Connect the AC power cord to the rear of the device.
5. Plug the other end of the AC power cord into the mains power outlet.
6. Set the DC on/off switch to on.
Note: When powering the device regularly check the battery charge level.
Using two batteries
Refer to illustration F .
1. Place one battery on top of another.
If required, use the Velcro strap to hold the batteries securely.
2. Plug the battery coupler cables into each of the battery DC input/output ports.
The battery coupler cables are marked with ‘1’ (primary) and ‘2’ (reserve) labels.
3. When charging two batteries, attach the power supply unit adapter to the DC plug
and connect the adapter to the battery coupler.
When powering a device, connect the DC output cable of the device to the end
of the battery coupler. The primary battery supplies power to the device and the
reserve battery takes over when the primary battery is disconnected or discharged.