Testing the operating temperature
Testing of the operating temperature should be done at least every 6 months or according to
institutional protocol.
CAUTION
Temperature adjustments cannot be made to the Ranger warming unit. If the tested
temperature is out of specification, please call Arizant Healthcare Customer Service.
TOOLS AND EQUIPMENT
•Thermocouple: 0.005" leads or smaller
•Calibrated thermocouple temperature monitor
•Aluminum tape
•IV bag containing room temperature saline
METHOD
1. Tape a thermocouple to the exterior of one side of the Ranger warming cassette. See figure
above for correct position of the thermocouple.
2. Slide the warming cassette into the slot of the Ranger warming unit.
3. Using room temperature fluids, prime the cassette just until fluid flows through the patient
end. Clamp the white clamp to stop the flow.
NOTE: To achieve correct results, fluids must be administered into the inlet tube, NOT into
the outlet tube.
4. Turn the Ranger unit ON and allow it to warm up for 5 minutes. The Ranger unit display
should read 41˚±1˚C. Note the temperature on the thermocouple temperature monitor. If the
temperature reading is not 41˚±1˚C call Arizant Healthcare Customer Service.
NOTE: Most hand-held temperature meters have a ±1°C tolerance.
Ranger
Blood/Fluid Warming System
5
Inlet tube
0.75
"
1.80
"
Thermocouple
