Greenheck Centrifugal (CSW, BIDW, AFDW), Industrial (IPA, IPO, IPW) and Filtered Supply (LSF) (463687) - Manual (Page 6)

6 Centrifugal, Industrial and Filtered Supply
Flexible Couplings (Arr. 8 Only)
Check for misalignment
between the coupling
halves. Parallel and
angular misalignment and
separation gap are illustrated
below. Refer to coupling
manufacturer’s installation
instructions for allowable
misalignment and separation
gap tolerances. When
correcting for misalignment
using shims, the shims should
only be located under the
motor. Do not place shims
under the shaft bearings.
After aligning procedure, check for tightness of all
coupling component pieces and ensure that they are
clean from dirt and debris.
Unit
Size
CSW, BIDW, AFDW,
LSF
Inlet Cone to Backplate
A Dimension*
± Tolerance (in.)
A Dimension*
± Tolerance (mm)
7 1 3 ⁄
16
± 1/8 30 ± 3
8 2 3 ⁄
16
± 1/8 36 ± 3
9 3 3 ⁄
16
± 1/8 81 ± 3
10 3 7 ⁄
16
± 1/8 87 ± 3
12 4 ± 1/8 102 ± 3
13 4 7 ⁄
16
± 1/8 113 ± 3
15 5 ± 1/8 127 ± 3
16 5 7 ⁄
16
± 1/8 138 ± 3
18 6 3 ⁄
8
± 1/8 162 ± 3
20 7 ± 3/16 178 ± 5
22 7 13 ⁄
16
± 3/16 198 ± 5
24 8 5 ⁄
8
± 1/4 219 ± 6
27 9 7 ⁄
16
± 1/4 240 ± 6
30 10 9 ⁄
16
± 3/8 268 ± 10
33 11 7 ⁄
16
± 3/8 291 ± 10
36 12 3 ⁄
4
± 3/8 324 ± 10
40 14 3 ⁄
16
± 3/8 360 ± 10
44 15 9 ⁄
16
± 3/8 395 ± 10
49 17 1 ⁄
8
± 1/2 435 ± 13
54 18 13 ⁄
16
± 1/2 478 ± 13
60 20 15 ⁄
16
± 1/2 532 ± 13
66 22 7 ⁄
8
± 1/2 581 ± 13
73 25 1 ⁄
2
± 1/2 648 ± 13
*A dimension does not apply to partial width wheels.
Radial Gap, Overlap and Wheel
Alignment
Efficient fan performance can be maintained by having
the correct radial gap, overlap and wheel alignment.
These items should be checked after the fan has been
in operation for 24 hours and before start-up after
the unit has been serviced. Radial gap and overlap
information applies to models: CSW, BIDW, AFDW,
and LSF. Radial Gap is adjusted
by loosening the
inlet cone bolts and
centering the cone on
the wheel. If additional
adjustment is required
to maintain a constant
radial gap, loosening
the bearing bolts and
centering the wheel
is acceptable as a
secondary option.
Overlap or offset, is
adjusted by loosening
the wheel hub from
the shaft and moving
the wheel to the
desired position
along the shaft. The
transition between
the inlet cone and
wheel should be as
shown; there is a
smooth feel to the profile
when moving from one
component to the other.
Overlap on double width
fans is set by having
equal spacing on each
side of the wheel.
Correct wheel alignment
for an industrial process
fan (model IPA, IPO or
IPW) is achieved by
centering the wheel in the
housing.
Overlap Overlap
Radial
Gap
BIDW, AFDW, LSF
Radial
Gap
Overlap
A
Inlet
Cone
Wheel
CSW
Equal Spacing
Housing
Wheel
Wheel Alignment
Parallel Misalignment
Angular Misalignment
Separation Gap