Service manual
29
Bair Hugger Model 775 Temperature Management Unit Service Manual
English 202526A
Check the 3M
TM
Bair Hugger
TM
therapy website to ensure you have the most recent version of this document. www.bairhugger.com reorder #202526A
Maintenance Checklist
Filter inspection
1� Remove and inspect the lter�
2� Return lter or replace as necessary�
Note: Replace every 12 months or every 500 hours (PN 90047).
Calibrate the operating temperature
1� Attach the Bair Hugger temperature test unit (PN 22110)�
a� Connect temperature sensor to your meter�
2� Run in Ambient mode for 10 minutes�
3� Enter the calibration mode�
a� Press the Alternate Mode button and Ambient button, together for
approximately 3-seconds�
b� Temperature measured at end of hose will display on LCD�
4� Adjust Bair Hugger unit’s displayed temperature so it matches test unit sensor
(± �1° increments)�
a� 32° button lowers displayed temperature�
b� 38° button raises displayed temperature�
Note: Unit can only adjust ± 3.0°C. Try a dierent hose if more adjustment is
required and call 3M Patient Warming technical support with results.
5� Save Settings – Press the Alternate Mode button to save your settings�
Test over temperature detection system
1� Initiate over-temperature test
a� Press the Alt and 43°C button together for approximately 3-seconds�
b� Wait as unit executes self test�
c� Two beeps indicate test has completed�
2� Review Results
a� Observe max temperature ≤56°C�
b� Pass or fail indicated on display�