Twin City SWSI Nested Inlet Vanes - ES-394 - Manual (Page 2)

2 TCF&B Engineering Supplement ES394
For Arrangements 3 & 7:
1. Using Figure 2 as a guide, assemble items 5 through
15 to the inlet vane. Threaded linkage rod (item 6)
may have to be cut to required length.
2. Center inlet vane in location of old vane or cone, and
rotate until inlet vane control ring is approximately in
the same position as shown in Figure 3. If old control
linkage is being reused, locate control ring clip so
that connecting link can be reattached.
3. For installation of new quadrant, using the dimensions
in Figure 4, position quadrant (item 2 or 2A) to the
housing side. Drill a hole in the fan housing side to
match outside diameter of control rod housing (item
4).
4. Weld quadrant (item 2 or 2A) to housing frame (or
housing side).
5. Reassemble bearing support frame and bolt it to the
fan housing as shown in Figure 5.
6. Reassemble bearing and tighten bearing fasteners
7. Remove blocking under wheel and check to be sure
wheel turns freely. Adjust bearing position or inlet
vane position as required.
8. Assemble the remaining parts of control system
according to Figure 2. Adjust position of connecting
links as required to allow the vane to open and close
smoothly.
9. Weld threaded linkage housing to hex nuts (item 12).
Spot weld the control rod to vane handle and control
linkage bar.
AIRFLOW
17
16
18
19
16
17
26
13
25
24
10
11
12
6
7
12
23
5
15
14
4
3
20
21
22
2
15
1
27
11
10
9
8
8A
2A
18
Figure 2. Nested Inlet Vane Control System for SWSI BC, BAF, BCS Fans
ITEM DESCRIPTION
01 VANE HANDLE
02 QUADRANT
03 CONTROL ROD
04 CONTROL ROD HOUSING
05 CONTROL LINKAGE BAR
06 CONTROL LINKAGE ROD
07 THREADED LINKAGE ROD
HSG.
08 CONTROL RING CLIP
09 CONTROL RING
10 BALL JOINT
11 HEX NUT
12 HEX NUT
13 HEX NUT
14 HEX NUT
15 OILITE BEARING
16 FLANGE BEARING
17 HEX BOLT
18 NEX NUT
19 BEARING BRACKET
20 HEX HEAD SCREW
21 SPRING LOCK WASHER
22 FLAT WASHER
23 SQUARE HEAD SETSCREW
24 HEX HEAD SCREW
25 UNISTRUT
26 UNISTRUT CLAMPING NUT
27 SQUARE HEAD SETSCREW
NOTES:
1. Items 16, 17, 18, 19 used for 1.5" and larger dia. control rod.
2. Items 4, 15 used for .75" to 1.25" dia. control rod.
3. Items 24, 25, 26 used for fan sizes 245–890.
4. Item 2A used for rotatable housing design.
5. Item 8A used for fan sizes 165–222.
6. Item 19, bearing bracket, shall be welded to inside of the fan housing.
7. Item 2, quandrant for nonrotatable fan, shall be welded on fan housing frame.
8. Item 2A, quadrant for rotatable fan, shal be welded on fan housing.
9. Measure threaded linkage rod length to fit.