3. Operation & System Set-up
3-30
FLUID INFUSION, CONTINUOUS
The infuse rate automatically starts at 10 ml/min when the main operating screen first
appears. Adjust the flow rate by pressing INFUSE RATE
or
INFUSE RATE
. P
ress
500 ml/min RATE to immediately set the infuse rate to the 500 ml/min.
• Automatic Warming
The system automatically warms the fluid to physiological temperature at all flow
rates in the ml/min range.
For flow rates above 50 ml/min, the fluid will warm to 37.5ΕC.
For flow rates from 10 ml/min to 50 ml/min, the fluid will be warmed to 39ΕC to
help compensate for thermal losses in the patient line under low flow conditions.
There is no heating at 2.5 and 5.0 ml/min (150 and 300 ml/hr) settings. Message
“LOW FLOW, NO HEATING” flashing on the screen indicates that the system is
not heating at low flow rates.
• Pressure Control
Pressure control regulates the pump speed to keep line pressure under the user-
set pressure limit. The pressure status line flashes and a periodic beep sounds
while the system is under pressure control. Line pressure is mainly due to the
small orifice of the infusion set or any occlusions in the line. The pressure limit is
set at the factory to the maximum limit of 300 mmHg. To reduce the limit, see
Chapter V, Calibration/Set-Up.
< A larger bore cannula results in lower line pressure and lower line pressure
allows higher flow rates. To achieve the desired flow rate, refer to the section,
Match the Infusion Set to Flow Rate and Fluid Type earlier in this chapter for
the guide to infusion set bore size.
WARNING!
Keep tubing clear of kinks, twists and other restrictions.
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