Thoratec HeartMate III, Instructions For Use Manual, Page: 59 / 458

System Operations 2
HeartMate III Left Ventricular Assist System Instructions for Use 2-31
System Controller Operating Modes
The System Controller has three modes, each with a distinct function:
• Run Mode: The system is operating and is in use.
• Sleep Mode: The system is not in use, but is ready to function.
The backup System Controller is predominantly in Sleep Mode.
• Charge Mode: The system is not connected to a Driveline, but is connected to a power
source.
This is to charge and maintain the readiness of its internal 11 Volt Lithium-Ion backup bat-
tery.
IMPORTANT! The backup System Controller must be put into Charge Mode every six months
to ensure backup battery readiness.
Run Mode
Run Mode is the usual state for the operating System Controller ( Figure 2.19 ).
Figure 2.19 System Controller in Run Mode While on Battery Power (left) and the Power Module (right)
In Run Mode, the Pump Running symbol is illuminated green ( ) and the System Controller:
• Connects to a power source (the Power Module, the Mobile Power Unit, or two HeartMate 14
Volt Lithium-Ion batteries)
• Connects to the Left Ventricular Assist Device via the Driveline
• Sends power to the Pump via the Driveline
• Controls and monitors physiological and operating conditions
• Displays data about physiological and operating conditions
• Accesses user interface indicators to reflect System Controller and Pump conditions
• Responds to user interface button pushes
• Charges the 11 Volt Lithium-Ion backup battery inside the System Controller
• Communicates with the System Monitor, if connected
• Performs a System Controller self test, when needed
For instructions on switching from Run Mode to Sleep Mode, refer to Switching Operating
Modes on page 2-34.