Routine Operating
Procedures
Changing from PBU to
Battery-Powered (Untethered) Operation
To change from PBU (tethered) power to battery (untethered) operation:
1
Explain procedure to patient.
2
Place two battery clips, two fully charged HeartMate batteries, and the white
and black PBU cable connectors within easy reach.
3
Place the 1
st
fully-charged battery into a battery clip by aligning the arrows on
the battery and clip and pushing the battery into the battery clip until it “clicks”
into place (
Figure 22
). Repeat for the 2
nd
battery/battery clip.
4
Unscrew the
black
System Controller / PBU cable connector (
Figure 23
).
An alarm will sound one beep per second, the green power symbol
will flash
rapidly, and the four green battery fuel gauge lights
will flash.
CLINICAL OPERATION AND PATIENT MANAGEMENT
28
Figure 22
Battery and Battery Clip. Note Location of Release Button on Clip.
SD Cable
System Controller Cable Connector
PBU Cable Connector
Figure 23
Unscrewing the PBU and System Controller Cables
WARNING !
At least 1 System Controller power lead must be connected to a power
source (batteries or PBU) at all times. Disconnecting both power leads at the same time
will cause the pump to stop. This could result in serious patient injury or death.
Battery
Release
Button
