Twin City TSL; Nested Inlet Vanes - ES-694 - Manual

Removing Old Cone or Vane
1. Shut off fan and lock out electrical power.
2. Remove inlet screens if applicable.
3. For Old Inlet Cone Removal — Loosen fasteners at
periphery of inlet cone and remove old cone.
3 . For Old Inlet Vane Removal — Loosen hex nut (item
10 and 13 in Figure 2) and remove vane handle, and
control linkage and oilite bearings.
4. Loosen fasteners which hold old inlet vane to fan
housing, and remove the vane and control linkage.
Assembling Nested Inlet Vane
For New Installation
1. Using Figure 2 as a guide, assemble items 5 through
16 to the new inlet vane, measuring threaded linkage
rod length to fit. For fan sizes 182 through 245, the
control linkage bar (item 5) has a 15-degree right-
hand twist to allow the inlet vane to fully open and
close.
2. Center the inlet vane in location of old inlet funnel
and rotate the inlet vane to position the control ring
clip as shown in Figure 1.
3. Using dimensions in Figure 1, cut a hole in the fan
housing for attaching control rod.
4. Install all remaining parts to the inlet vane according
to Figure 2, using the setscrews to hold the control
rod to vane handle and control linkage bar.
5. Adjust position of connecting links as required to
allow vane to open and close smoothly. The length
of threaded linkage rod (item 6) may have to be
adjusted as necessary.
6. Tack weld the control rod to vane handle and control
linkage bar. Using dimensions in Figure 1 weld the
quadrant (item 2) and control rod housing (item 4) to
the fan housing.
7. Reinstall inlet screening if applicable.
For Replacement
1. Using Figure 2 as a guide, assemble items 5 through
16 to the new inlet vane, measuring threaded linkage
rod length to fit. For fan sizes 182 through 245, the
control linkage bar (item 5) has a 15-degree right-
hand twist to allow the inlet vane to fully open and
close.
2. Center the inlet vane in location of the old inlet vane,
and rotate until the hole on the control linkage bar
is lined up with the hole on the fan housing.
3. Install all remaining parts to the inlet vane according
to Figure 2, using setscrews to hold control rod to
the vane handle and control linkage bar.
4. Adjust position of connecting links as required to
allow vane to open and close smoothly. The length
of the threaded linkage rod (item 6) may have to be
adjusted as necessary.
5. Tack weld control to the vane handle and linkage
bar.
6. Reinstall inlet screening if applicable.
©1996 Twin City Fan & Blower Co.
MOTOR LOCATION VS. CONTROL ROD HOUSING LOCATION
FOR ALL SIZES (VIEW FROM INLET)
RING CLIP
DETAIL "A"
CONTROL
RING
LEAD ROD (LINE UP
WITH BOLT HOLE)
B
QUADRANT
45 °
ACCESS DOOR
CONTROL ROD
(TOP POSITION FOR
FLOOR MTG. BOTTOM
POSITION FOR HORIZ.
CEILING HUNG)
A
CONTROL
ROD HSG.
FAN HSG.
CENTER
1/8
SIZE 182 — 245 SIZE 270 — 890
DETAIL "A"
LEAD ROD (LINE UP
WITH BOLT HOLE)
RING
CLIP
DETAIL "B"
CONTROL
RING
QUADRANT
ACCESS
DOOR
CONTROL ROD
(TOP POSITION FOR
FLOOR MTG. BOTTOM
POSITION FOR HORIZ.
CEILING HUNG)
A
B
45 °
FAN HSG.
CENTER
DETAIL "B"
CONTROL
ROD HSG. C
PARALLEL
TO HORIZ. C
L
L
3.0
1/8
H
F
G
E
D
C
B
A
TOP POSITION FOR
FLOOR MOUNTING
BOTTOM POSITION FOR
HORIZ. CEILING HUNG
3.0
Figure 1. Control Ring and Quadrant Position
SIZE 182 200 222 245 270 300 330 365 402 445 490 542 600 660 730 807 890
A 10.25 11.25 12.50 13.75 15.25 16.75 18.50 20.50 22.50 25.00 27.50 30.25 33.50 37.00 40.75 45.00 49.75
B 4.25 4.25 4.75 5.25 5.25 5.75 6.37 6.50 8.00 7.75 8.62 9.50 10.25 11.12 12.00 12.87 13.75
ES-694
May 1996
TSL Nestled Inlet Vanes
INSTALLATION, OPERATION & MAINTENANCE MANUAL