3M Bair Hugger 675 - Hose and Filter Procedures; Attaching and Removing Hose; Testing the Alarm; Replacing the Air Filter

English / 34-8720-2487-1 9
3. Cart Installation: Place the unit in the center of the cart with the warming unit
feet aligned with the recesses in thecart.
(Note: The front rolling cart casters arelockable.)
System
MODEL
675
CartInstallation
4. Push down to snap the warming unit inplace.
Attaching thehose
ServiceFrequency
Asneeded
Tools/Equipment
• Hose
Method
1. Align the triangle on top of the warming unit hose
connection with the notched groove on the hoseend.
2. Push the hose in and turn clockwise approximately ¼ turn
until it snaps intoplace.
Removing theHose
ServiceFrequency
Asneeded
Tools/Equipment
• None
Method
1. Hold the warming unit end of the hose and rotate
counter-clockwise approximately ¼ turn until
itstops.
2. Pull the hose straight out of the warmingunit.
Testing theAlarm
ServiceFrequency
Asneeded
Tools/Equipment
• None
Method
1. Connect the warming unit to a grounded powersource.
2. Verify the alarm sounds for approximately one beep and thensilences.
Replacing the AirFilter
ServiceFrequency
Every 12months or 500hours ofuse.
The Change Filter indicator will display on the LCD screen after 500hours
ofuse.
Tools/Equipment
• Replacement air filter (Use only 3Msupplied airfilter)
• #2Phillipsscrewdriver
 CAUTION: Do not attempt to clean the air filter as it may be contaminated from
use. Discard the filter in a manner consistent with institutionalprotocol.
Method
1. Disconnect the warming unit from the
grounded powersource.
2. If the warming unit is mounted to a rolling
cart remove the cart by gently pulling on
the front tab on the cart and lifting the
warming unit off thecart.
3. Turn the warming unit upsidedown.
4. Remove the 2screws located in the
bottom of the warmingunit.
5. Lift the filter cover off the warmingunit.
6. Remove the air filter and discardit.
7. Place the new filter in the filter
compartment in eitherorientation.
8. Replace the filter cover on the
warmingunit.
9. Replace the 2screws in the filtercover.
10. If the warming unit was attached to a
rolling cart, place the warming unit in the
center of the cart and push down to snap
it inplace.
11. Connect the warming unit to a properly
grounded powersource.
12. Access the Diagnostic mode (see Diagnostic Modesection).
13. Navigate to the FILTER TIMER menu option and select it by pressing the
Ambientbutton.
14. Reset the filter timer by highlighting Yes and pressing the Ambientbutton.
15. Verify the filter time displayed at the top of the LCD screen displays0.0.
16. Exit the Diagnostic Menu by pressing the Powerbutton.
Calibrating the OperatingTemperature
 CAUTION
Perform all temperature testing of the warming unit with a 3MModel
22110Temperature TestUnit.
3Massumes no responsibility for the reliability, safety, or performance of the
temperature management system if temperature tests or adjustments are made
in any manner other than those described here. Improper measurement or
adjustment of the warming unit’s normal operating temperature could result in
patient exposure to temperatures outside of the indicated range and may lead to
patientinjury.
ServiceFrequency
Every 12months or 500hours ofuse.
Tools/Equipment
• Model 22110Temperature TestUnit
• Calibrated thermocouplemonitor
Notes:
• The Model 22110temperature test unit simulates the operating characteristic of
3Mblankets and gowns when used with the warmingunit.
• When using the Model 22110temperature test unit, take temperature readings
using a calibrated thermocouple monitor that can accept a male, subminiature
connector and read a “K” style thermocouple (e.g., a Fluke 52 K/J Thermometer).
If the test unit’s connector does not fit your thermocouple monitor, remove the
connector from the test unit and attach a connector that fits your monitor. Be
certain to observepolarity.
Method
1. Connect the warming unit to a grounded power source. The unit performs a
self-test and automatically proceeds to Standbymode.
2. Connect the temperature test unit to the end of the warming unit hose by fully
inserting the hose end up to the hose card stopflange.
3. Access the Diagnostic mode (see Diagnostic Modesection).
4. Navigate to the CALIBRATION menu option then press the Ambient button.
The warming unit is now in Calibration mode. In this mode, the warming unit
performs the followingtasks:
• Blower turnsON.
• Heater elements turnON.
• The LCDdisplays:
a. The text “DISPLAY” followed by the calibrated temperature of the air
exiting the warmingunit.
b. The text “OFFSET” followed by the offset value. The offset value is the air
temperature difference between the warming unit hose connection (i.e.
air entering the hose) and the hose end (i.e. air exiting thehose).
5. Wait for the temperature shown on the warming unit’s LCD display to stabilize
at 43.0°C ± 0.1°C (about 3-5minutes).
6. Compare the temperature shown on the LCD display and the temperature of
the thermocouple (test kit)monitor.
• If the temperatures match, press the Ambient button to save and return
to the Diagnostic Mode mainscreen.
System
MODEL
675
Filter
Screws
Filter Cover