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When the pulley is changed, the V-belt length must be rechecked. We have for horizontal
Step 4:
air throw configuration:
V-belt length, L
We thus can use a belt with a length of 1600mm:
Where,
Step 5:
From the fan curve, we can also notice that the motor power input has increased.
At the new operating point, the power is approximately 5.2 kW.
Thus, the existing motor is still sufficient to drive the blower with the smaller 160mm pulley.
Summary:
i)
Fan motor kW
ii)
Blower pulley diameter
iii)
V-belt size
The following table summarizes the drive package data, motor size used for the ADB-B & D
series, as manufactured:
Model
38
=
2C + 1.57 (Db + Dm)
=
(2 x 599) + 1.57 (95 + 160)
=
1598.35
C
=
distance between the centres of the two pulleys
Db
=
diameter of blower pulley
Dm
=
diameter of motor pulley
=
5.5
160
=
=
1600
Pulley Centre Distance, C
Horizontal
Vertical
(mm)
(mm)
310
349
310
349
319
340
314
330
599
623
599
623
846
890
732
782
738
768
700
751
300
490
300
490
TS-SB-B/D-AM-A1
mm
kW
mm
mm
Motor, kW
Motor RPM
1.5
1400
2.2
1440
1.5
1400
3.0
1420
4.0
1440
4.0
1440
5.5
1440
5.5
1440
7.5
1440
11.0
1440
11.0
1460
15.0
1460
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