Elmo Rietschle G-BH7e User Manual
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© Gardner Denver Deutschland GmbH
Technical data
2.1.3 Temperature
increase
The information listed in the following tables
corresponds to the heating of the side channel
housing and the air exiting compared to the
ambient temperature during operation with a
permissible total pressure difference and an air
pressure of 1013 mbar [14.7 psi]. At lower air
pressures these values increase.
Temperature increase for
operation with output
frequency (approx.)
50 Hz
60 Hz
86 Hz
Type
∆T
[K]
∆υ
[F]
∆T
[K]
∆υ
[F]
∆T
[K]
∆υ
[F]
Single−impeller design
2BH7210−0.N1 52
126
61 142
2BH7210−0.N5 52
126
77 171
2BH7310−0.N2 81
178
86 187
2BH7310−0.N6 88
190
112
234
2BH7410−0.N1 90
194
101
214
2BH7410−0.N5 114
237
120 248
2BH7510−0.N2 120
248
112 243
2BH7510−0.N6 120
248
120 248
2BH7610−0.N3 118
244
124 255
≤
120
≤
248
Two−impeller design
2BH7220−0.N5 55
131
86
186
2BH7320−0.N5 81
178
124
255
2BH7320−0.N8 120
248
120
248
2BH7420−0.N2 89
192
80
176
2BH7420−0.N5 121
250
117
243
2BH7520−0.N7 125
257
110
230
2BH7620−0.N3 124
255
126
259
2BH7620−0.N4 124
255
126
259
≤
120
≤
248
Three-impeller design
2BH7630−0.N6 120
248
120
248 ≤
120
≤
248
Tightening torques for screw connections
The following values apply if no other data are
given.
With non−electrical connections, property classes
of 8.8 and 8 or higher as per DIN ISO 898 (DIN
EN 20898 / DIN ISO 898) are assumed.
Tightening torques for
non−electrical connections
Thread
[Nm]
[lb-in]
M4
2,7 … 3,3
23,9 … 29,2
M5
3,6 … 4,4
31,9 … 38,9
M6
7,2 … 8,8
63,7 … 77,9
M8
21,6 … 26,4
191 … 234
M10
37,8 … 46,2
335 … 409
M12
63,0 … 77,0
558 … 681
Tightening torques for cable
and conduit glands Metal
Thread
[Nm]
[lb-in]
M12x1,5
4,0 … 6,0
35,4 … 53,1
M16x1,5
5,0 … 7,5
44,3 … 66,4
M20x1,5
6,0 … 9,0
53,1 … 79,7
M32x1,5
M40x1,5
8,0 … 12,0
70,8 … 106
Tightening torques for cable
and conduit glands Plastic
Thread
[Nm]
[lb-in]
M12x1,5
2,0 … 3,5
17,7 … 31,0
M16x1,5
3,0 … 4,0
26,6 … 35,4
M20x1,5
4,0 … 5,0
35,4 … 44,3
M32x1,5
M40x1,5
5,0 … 7,0
44,3 … 62,0
2.2 Electrical
data
See rating plate.