10
3M™ Bair Hugger™ Warming Unit Model 775 – Operator’s Manual
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); back-
up over-temperature detection at warming unit hose inlet.
ALARM SYSTEM
Over-temperature (≤56°C, 53°C ± 3°C typical): red
Over-Temp
indicator light flashes, alarm sounds, heater and blower shut down,
operating indicator lights turn OFF, and control panel becomes
unresponsive.
FAULT
Amber
Fault
indicator light flashes, alarm sounds.
OVERCURRENT PROTECTION
Dual input fused lines.
Electrical Characteristics
HEATING ELEMENT
1400 W Resistive
LEAKAGE CURRENT
Meets IEC 60601-1 requirements.
BLOWER MOTOR
Operating speed: 4,700 rpm (high fan setting)
4,100 rpm (low fan setting)
Airflow: up to 48 cfm or 23 L/s
POWER CONSUMPTION
Peak:
1550 W
Average:
800 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, 7.2 A, or
100 VAC, 50/60 Hz, 15 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
