Tyco Puritan Bennett GoodKnight 425, Patient Manual

Page: 17 / 34

Revision C
GoodKnight 425 / GoodKnight 425ST Patient Manual 11
External Battery Operation
The GoodKnight 425 can be powered by a 12-V car battery using the special cable provided.
CAUTION
•
Do not use any battery power cable other than the optional cable supplied with the
GoodKnight 425. Doing so risks damaging the device and the battery.
•
Only use 12-Volt DC sources and ensure that the polarity connections (+ and -) are correct.
The device can be used for a minimum of eight hours with a fully charged car battery in normal
operation conditions.
To connect the battery cable, replace steps 4 and 5 of the standard installation by the following steps:
1.
Connect the battery power cable onto the supply connector located at the back of the device (see
Figure 4, page 5).
2. Connect the other end of the battery power cable directly to the battery.
Figure 8
−
Connection of the GoodKnight 425 to the battery cable
NOTE
Because of its high power consumption, fully charge the GoodKnight 425's battery before using the
device.
The GoodKnight 425 can be powered through a vehicle cigarette lighter using the cable provided.
To do so, replace steps 4 and 5 of the standard installation by the following steps:
1.
Connect the battery power cable to the supply connector located at the back of the device
(see Figure 4 on page 5).
2. Connect the other end of the battery power cable directly to the cigarette lighter plug.