Service manual
Bair Hugger Model 750 Temperature Management Unit Service Manual
8
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Operating Modes
e Model 750 temperature management unit has 4 operating modes: Ambient, 32°C, 38°C, 43°C.
To select the 32°C, 38°C, 43°C, or Ambient mode, press the corresponding button. e temperature
management unit will operate within the specied temperature range, shown in the table below.
Temperature Mode Temperature of Delivered Air
32°C 32°C ± 1.5°C
38°C 38°C ± 1.5°C
43°C 43°C ± 1.5°C
Ambient Unit will supply air that is slightly warmer than room
temperature
Aer you select a temperature mode, the following events occur:
• Corresponding indicator light illuminates.
• Blower operates.
• Heater activates except in Ambient mode.
• Temperature mode timer and hour meter activate.
• Temperature at the blanket-end of the hose appears in the alphanumeric display.
• Temp in Range indicator light illuminates when the temperature at the blanket end of the hose is
within ±1.5°C* of the selected setting; this indicator light does not illuminate in the Ambient mode.
Standby Mode
To place the unit in Standby mode, press the Standby button. When in Standby mode, the following events
occur:
• Standby indicator light illuminates.
• Blower and heater turn o.
• Alphanumeric display deactivates.
• Temperature mode timer pauses.
• Alarm and fault detection functions remain active.
* Within ±3°C in units with < Rev L soware. e Rev version appears in the display window upon
connection to a power source.