IBM 6643 User Manual
Page 12
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
Emission
Values
Average
sound
pressure
levels:
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
4
Hardware
Maintenance
Manual