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3M™ Bair Hugger™ Warming Unit Model 775 – Service Manual
CERTIFICATIONS
IEC 60601-1; IEC/EN 60601-1-2; UL 60601-1; CAN/CSA-C22.2, No.601.1;
EN 55011: EN 80601-2-35 and in accordance with Canadian/CSA C22.2,
No. 601.1. Classified under the Medical Device Directive as a Class
IIb device.
CLASSIFICATION
MEDICAL — GENERAL MEDICAL EQUIPMENT AS TO
ELECTRICAL SHOCK, FIRE AND MECHANICAL HAZARDS
ONLY IN ACCORDANCE WITH UL 60601‑1; CAN/
CSA‑C22.2, No.601.1; ANSI/AAMI
ES60601‑1:2005 CSA‑C22.2 No. 60601‑1:08; EN
80601‑2‑35; Control No.4HZ8.
Classified under IEC 60601-1 Guidelines (and other national versions of the
Guidelines) as Class I, Type BF, Ordinary equipment, Continuous operation.
Not suitable for use in the presence of flammable anesthetic mixtures with
air or with oxygen or nitrous oxide. Classified by Underwriters Laboratories
Inc. with respect to electric shock, fire and mechanical hazards only, in
accordance with UL 60601-1
DIAGNOSTICS
A qualified service technician can perform over-temperature detection
system testing, temperature output testing, operating temperature
calibration, and fault code troubleshooting.
Maintenance Checklist
FILTER INSPECTION
1.
Remove and inspect the filter.
2.
Return filter or replace as necessary.
Note: Replace every 12 months or every 500 hours (PN 90047).
CALIBRATE THE OPERATING TEMPERATURE
1.
Attach the Model 22110 temperature test unit to the end of the
warming unit hose.
2.
Run in Ambient mode and high fan setting
(
)
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 warming unit displayed temperature so it matches
test unit sensor as close as possible (± .1° increments).
a.
32°C button lowers displayed temperature.
b.
38°C button raises displayed temperature.
Note:
Warming unit can only adjust ± 3.0°C. Try a different hose if more
adjustment is required and call 3M technical support with results.
5.
Save Settings – Press the Alternate Mode button to save
your settings.
TEST OVER TEMPERATURE DETECTION SYSTEM
1.
1. Run in
Ambient
mode and
high fan
setting
(
)
for 5 minutes.
2.
Initiate over-temperature test
a.
Press the
Alternative Mode
and
43°C
button together for
approximately 3-seconds.
b.
Wait as warming unit executes self test.
c.
Two beeps indicate test has completed.
3.
Review Results
a.
Observe the temperature is 46°C to 56°C.
b.
Pass or fail indicated on display.
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Maintenance Log
Date
Maintenance Action Performed
PDF Scaled at 75.0%
