High Flows; Alternate Method - Alarm Test - GE Vital Signs enFlow Preventive Maintenance

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 ± 20 mL/min.

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 maintaining 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
Purpose
The purpose of this test is to determine that the over-
temperature alarm on the Warmer is working properly.
Procedure
1. Use the performance testing setup described in steps 1-
5 above.
2. Use a clamp to stop the flow in the IV line.
3. Change the source fluid's temperature to 50 °C ± 2 °C. Take extra care while working with
hot fluids.
4. Power on the enFlow system.
5. Allow at least 20 seconds for the power-on self-test to complete and the temperature display
to read a stable temperature. Confirm all LEDs are illuminated green.
4400-0108 enFlow Preventive Maintenance Record Rev. C Apr-2011
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