Service manual

Bair Hugger Model 775 Temperature Management Unit Service Manual

English 202526A

Check the 3M

Bair Hugger

therapy website to ensure you have the most recent version of this document. www.bairhugger.com reorder #202526A

Replacing the Fuses

Service frequency

As needed�

caution

Use proper Electrostatic Discharge (ESD) procedures when performing maintenance� Failure to do so may

result in damage to the unit�

Tools/equipment

• Phillips screwdriver

• Wire cutter

• Wire tie

• Needle-nose pliers

Method

1� Detach the hose (see detaching hose on page 20 for instructions)�

Disassembling the Unit

1� Turn unit upside down�

2� Using a Phillips screwdriver, remove the eight screws that secure the top and bottom

enclosures together

3� Turn unit upright�

4� Remove four screws that attach upper enclosure to back plate�

5� Li the upper enclosure straight up and disconnect the user interface wire by squeezing the release

tabs�

6� Replace fuses�

Reassembling the Unit

1� Install the replacement heater facing the same direction as the one removed�

2� Reinstall the four heater screws�

3� Slide the heater duct/PCB assembly back onto the chassis�

4� Secure the heater duct with the two screws�

5� Reconnect the two motor wires�

6� Reconnect the power, heater and elbow wires�

7� Secure the heater wire to the PCB with a new wire tie� NOTE: Be careful not to damage the

component the wire is secured to, it is very fragile�

Fuses