IBM 6643 Environment, Heat Output, Electrical Input, Airflow, Acoustical Noise, Emission Values

Environment	Air temperature:
	v System on: 5 to 35 C
		(41 to 95 F)
	v System off: -10 to 60 C
		(14 to 140 F)
	Humidity:
	v	System on: 8% to 80%
	v System off: 8% to 80%
	Maximum altitude: 3048 m (10,000 ft.)
Heat Output	Approximate heat output in BTUs per hour:
	v	Minimum:
		340 BTU/hr. (100 watts)
	v	Maximum:
		2385 BTU/hr. (700 watts)
Electrical Input	Sine-wave input (50 to 60 Hz) required
	Low range input voltage:
	v	Minimum: 100 V AC
	v Maximum: 127 V AC
	High range input voltage:
	v	Minimum: 200 V AC
	v Maximum: 240 V AC
	Input kVA (approximately):
	v	Maximum (as shipped): 0.07 kVA
Airflow	Approximately 0.56 cubic meters/minute
	(20 cubic feet/minute)
Acoustical Noise	Average sound pressure levels:
Emission Values	At operator position:
	v	- 41 dB operating
	v	- 34 dB idle
	At bystander position (1 meter):
	v	- 34 dB operating
	v	- 29 dB idle
	Declared (upper limit) sound power levels:
	v	- 5.3 bels operating
	v	- 4.7 bels idle

4Hardware Maintenance Manual