Alternate Method - Simulated Use Performance Testing - GE Vital Signs enFlow Preventive Maintenance

displayed on the Controller/AC Power Pack front panel. This circumstance obviates the need
for the thermometer on this test.)
2. Always run in the normal mode first before switching to the overheat mode.
3. Next, switch to the overheat mode.
4. Temperatures of > 42 °C are shown in Yellow on the Controller display and Warmer Temp LED
indicating above normal conditions. These are visual alarms alerting to a potential over
temperature condition.
5. After reaching temperatures of > 45 °C, the Warmer LED will blink red, temperatures shown
on the Controller display will be in Red, and the audible alarm will sound.
6. Move the MAINS power switch on the back of the Controller/AC Power Pack to the OFF
position.
7. Open the Warmer covers and carefully remove the enCheck. Use caution as the surface of
the contact plate on the underside of the enCheck may still be hot.

2. Alternate Method - Simulated Use Performance Testing

Equipment
enFlow system
Power source
Infusion pump capable of maintaining up to 200 mL/min
IV line set
Water Bath
Source of distilled water or normal fluid - 0.5 L at 20 °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 "K" type
probes
Timer
Waste water container
Alternative equipment
Graduated cylinder, 100 to 500 mL.
Purpose
This test is performed to ascertain that the output fluid temperature
of the enFlow Warming System, while using a 22.9 cm (9 in.)
extension set, is 40 °C ± 2.0 °C when the input fluid is 20 °C through
the flow rates of 25-100 mL/min. Additionally, it is run to determine
that the rise in fluid temperature is >16.5 °C when the input fluid is
20 °C utilizing flow rates of 100-200 mL/min.
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 maintained 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.
4400-0108 enFlow Preventive Maintenance Record Rev. C Apr-2011
Expanded
view of A.
A
Page 5 of 8