3M Bair Hugger 675 - Specifications and System Information; Acronym Definitions; Physical Characteristics; Safety System

12 3M™ Bair Hugger Model 675 Warming Unit – Service Manual
AcronymDefinitions
EMI ElectromagneticInterference
EMC ElectromagneticCompatibility
ESD ElectrostaticDischarge
IV Intravenous
LED Light-emittingDiode
LCD Liquid CrystalDisplay
RF RadioFrequency
PCS Proximal ControlSensor
PMS Proximal MonitorSensor
RPM Revolutions PerMinute
PhysicalCharacteristics
Dimensions
14.5" high x 10.5" deep x 11"wide
(36.2cm high x 26.7cm deep x 28cmwide)
Weight 9.93lb (4.5kg)
Relative noise level 50dBA
Hose
Flexible
Length: 80" (203cm)
Weight: 1.51lb (0.686kg)
Diameter: 2" (5.08cm)
Unit Intake Filter MERV14*
Recommended Filter Change Every 12months or 500hours ofuse.
*See “Frequently Asked Questions on Filtration”section
Recommended operatingenvironment
Temperature 15°C-25°C(59°-77°F)
Humidity Up to 80% relative humidity(non-condensing)
Altitude Max 2,000m
Operatingtemperatures
Temperature control Electronicallycontrolled
Heat generated 2217BTU/hr (average), 650W(average)
Time to reach operating
temperature
2- 5minutes (dependent on blanketmodel)
Time required for the contact surface temperature to
heat up from 23± 2°C to 37°C (73± 2°F to99°F)
Storage/transport
temperature
-20°C to 45°C (-4°F to113°F)
Store all components in a cool, dry place when not inuse.
SafetySystem
Thermostat Independent electronic circuit; thermal cutoff shuts the heater
OFF to ensure hose end air remains below 56°C (53°C ±
3°Ctypical).
Alarm system Over-temperature (≤56°C, 53°C ± 3°C typical): red Over-Temp
indicator symbol will flash alternately with the “Wrench”
symbol, alarm sounds, heater and blower shut down, operating
indicator lights turn OFF, and control panel becomes
unresponsive. Remove fromservice.
Under-temperature (<3°C of selected temperature/setting
for 3minutes): blue Under-Temp indicator symbol will flash
alternately with the “Wrench” symbol, alarm sounds, heater
and blower shut down, operating indicator lights turn OFF, and
control panel becomes unresponsive. Remove fromservice.
Fault “Wrench” symbol displays and alarm sounds. Heater and blower
shut down, operating indicator light turns OFF and control
panel becomes unresponsive. Servicerequired.
Overcurrent
protection
Dual input fused lines. Fuses are to be accessed and/or
replaced only by servicepersonnel.
Alarm/FaultCodes
Alarm conditions Generalfault
Over-temperature
Under-temperature
Fault code indicator Yes on LCDscreen
Filter change indicator Yes: Triggered by 500hours ofuse
ElectricalCharacteristics
Heating element 1190WResistive
Heater control 3stageheater
flickerfree
Temperature settings Ambient
32° C (89.6°F)
38° C (100.4°F)
43° C (109.4°F)
Temperature accuracy +/- 3°C
Temperature display
resolution
0.1°C
Leakage current Meets UL 60601-1and IEC 60601-1requirements
Blower motor Non-adjustable, onespeed
Airflow: up to 44cfm or 20.77L/s
Operating speed: 4,700RPM
Power consumption Peak: 1255W
Average: 650W
Power cord 15ft., SJT, 3cond., 13A
15ft., SJT, 3cond., 15A
4.6m, HAR, 3cond., 10A
Device ratings 110-120VAC, 50/60Hz, 11.7A,or
220-240VAC, 50/60Hz, 6A,or
100VAC, 50/60Hz, 12A
Fuses Type: Fast acting ceramic fuses, 250VAC
AMPrating:
12A (110- 120VAC)
8A (220- 240VAC)
15A (100VAC)
Operating speed: F (FastActing)
Breakingcapacity:
15A, 12A: 750A @ 250Vac
15A, 12A: 10,000A @ 125Vac
8A: 200A @ 250Vac
8A: 10,000A @ 125Vac