4400_0060
enFlow Service Manual Rev. F 04/12
Page 32 of 36
Procedure
Measure Input and Output Temperatures of Fluid
1.
Set up the enFlow system for normal operation. (See Operator’s Manual “To Begin Operation of the
enFlow IV Fluid/Blood Warming System”.)
2.
Attach an IV line set to a 0.5 liter source of fluid at a temperature of ≈ 20 °C ± 2 °C. Then run the IV
line through a pump capable of maintaining up to 200 mL/min. or determine flow rate using the
graduated cylinder and timer.
3.
Next, attach the IV line to the enFlow system.
4.
The temperatures for this test should be measured within 22.9 cm (9 in.) of both the input and output
connections of the Disposable Cartridge. This step is done by inserting T connectors in the direct fluid
paths, which will accommodate a temperature probe. Connect the temperature probes to a
thermometer capable of measuring between 10 °C and 60 °C with ± 0.1 °C accuracy.
5.
Prime the IV line setup according to standard IV protocols.
6.
Remember to confirm that the output end of the extension set empties into the waste water
container.
7.
Power on the enFlow system, and establish a fluid flow of 100 ± 20 mL/min. Then allow at least 20
seconds for the power-on self-test to complete, the temperature display to read a stable
temperature, and for the temperature probes to stabilize.
8.
Record the input fluid temperature. The acceptable temperature range is 20 °C ± 2.0 °C.
9.
Record the output fluid temperature. The acceptable temperature range is 40 °C ± 2.0 °C.
10.
It is recommended to repeat steps 1-9 for the flow rate of 60 ± 2.0 °C.
High Flows
11.
Repeat steps 1-7 for the high flow rates of 125± 20 mL/min, 175 ± 20 mL/min, and 200 mL/min..
However, in place of steps 8 and 9, measure the
rise
in temperature of the output fluid over the input
fluid value. The rise should be >16.5 °C.
3. Alternate Method – Alarm Test
Equipment
enFlow system
Power source
Infusion pump capable of maintain up to 100 mL/min
IV line set
Water bath
Source of distilled water or normal fluid – 0.5 L at 50 °C ± 2.0 °C
2 Extension sets - 22.9 cm (9 in.)
Thermometer - capable of measuring 10 °C to 60 °C accurate to ± 0.1 °C, plus 2 external probes
Waste water container
