twin city ES-52, Installation, Operation & Maintenance Manual

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TCF&B ES-52 4
A
DIA
B
RBO RBR
B B
B
A
B
A
B
A
SWSI DWDI
Figure 6. Wheel-Funnel Overlap
Note: On sizes 905-911 wheel is to be centered in housing.
RBW – Center wheel in housing.
RBO / RBR Wheel Placement
Size 913 915 917 919 921 923 926 929 933 937 941 945 949 954 960
B 0.53 0.53 0.59 0.69 0.78 0.88 0.97 1.03 1.22 1.38 1.56 1.69 1.81 1.88 2.16
*Use dimension “B” for positioning wheel on SSI and TSL.
BC, BCS, TSL & BAF SWSI Wheel Placement
Size 122 135 150 165 182 200 222 245 270 300 330
A 12.25 13.50 15.00 16.50 18.25 20.00 22.25 24.50 27.00 30.00 33.00
B 0.32 0.34 0.38 0.44 0.56 0.63 0.69 0.75 0.88 0.97 1.06
APF – Straight Bore Hubs Wheel Placement
Size
121 141 161 181 201 221 251 281 321 351 391 441 491 551 631 711 791
A 13.00 14.13 16.16 18.44 19.94 22.78 25.06 28.25 31.81 35.81 39.81 44.56 50.06 55.75 63.69 71.69 79.63
B 0.25 0.25 0.25 0.31 0.31 0.31 0.50 0.50 0.56 0.63 0.63 0.75 0.78 0.81 1.03 1.28 1.38
Size 365 402 445 490 542 600 660 730 807 890
A 36.50 40.25 44.50 49.00 54.25 60.00 66.00 73.00 80.75 89.00
B 0.94 1.03 1.13 1.25 1.38 1.56 1.69 1.88 2.09 2.28
HIB, RTF, HRT Wheel Placement
Size A B Size A B
180 20.50 0.31 400 45.25 0.69
200 22.50 0.34 450 50.00 0.75
220 25.00 0.38 490 55.13 0.81
240 27.50 0.44 540 61.00 0.91
270 30.38 0.47 600 67.50 1.00
300 33.50 0.50 660 74.25 1.13
330 37.00 0.56 730 82.00 1.22
360 41.00 0.63 800 90.75 1.34
fan. Every switch should have the ability to be “locked-off”
by the service person and the key to be retained by this per-
son to prevent accidental power of the fan while service is
in process.
Operation Checklist
Verify that proper safety precautions have been followed:
Electrical power must be locked off.
Check fan mechanism components:
System connections are properly made and tightened.
Bearings are properly lubricated.
Wheel, drives and fan surfaces are clean and free of
debris.
Rotate the impeller by hand to verify it has not shifted
in transit.
Check wheel/funnel overlap. See Figure 6.
Drives on correct shafts (not reversed).
Check position of guards to prevent rubbing.
Check fan electrical components:
Motor is wired for proper supply voltage.
Motor was properly sized for power and rotational
inertia of rotating assembly.
Motor is properly grounded.
All leads are properly insulated.
Trial “bump”:
Turn on power just long enough to start assembly
rotating.
Check rotation for agreement with rotation arrow.
Does the assembly make any unusual noise?
(See Figure 7)
Check drive alignment and tension. Does this meet
with drive manufacturer’s recommendations?
Correct any problems which may have been found.
(Follow safety guidelines - shut power off). Perform
checklist again until unit is operating properly.
Run unit up to speed.
Verify fastener tightness. These may have loosened during
shipment or installation.
Set screws attaching wheel hub to shaft.
Set screws in drive sheaves or coupling.
Nuts on inlet funnel.
Nuts and bolts holding motor.
Nuts holding housing frame to base and base to
ground.
Nuts on accessories including shaft seal, access
doors and pie-splits.
Bolts in taper-lock bushings.
Grease line connections.
After one week of operation, check all nuts, bolts and set
screws and tighten if necessary.
Maintenance of Fans
This section contains general maintenance instructions for
your Twin City Fan & Blower unit. For specific information
about maintenance of components, particularly for special
application fans, see the attached documents.
General Motor Maintenance
The three basic rules of motor maintenance are:
1. Keep the motor clean.
2. Keep the motor dry.
3. Keep the motor properly lubricated.
Keeping motors and windings clean is important
because dirt and dust serve as thermal insulators. Heat nor-
mally dissipated by the motor is trapped causing overheat-
ing and/or premature failure. Blow dust and dirt out of wind-
ings and off the motor periodically. Use low pressure (50
psig) airstream so that winding damage does not occur.
Keep the area surrounding the motor open so the air can cir-
culate through the motor cooling fan. Follow normal mainte-
HIB, RTF, HRT, BC, BCS, TSL, BAF, SSI & APF
RBA, RBO, RBR & RBW
MBW, MBO, MBR
BCN
A
FC Wheel Placement
Size A B Size A B
10.5 0.47 0.69 30 0.75 4.38
12 0.25 1.88 33 0.81 5.00
15 0.44 2.19 36 0.75 5.00
18 0.50 2.25 39 1.06 6.38
21 0.69 2.88 42 1.69 7.50
24 0.81 3.00 48 1.50 7.13
27 0.69 3.13 54 1.00 10.50
RBA
RBA Wheel Placement
Size 907 909 911 913 915 917 919 921 923 926 929 933 937 941 945 949 954 960
A 0.25 0.38 0.47 0.53 0.59 0.69 0.69 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
FC
APF – Taper Lock Hubs Wheel Placement
Size
121 141 161 181 201 221 251 281 321 351 391 441 491 551 631
A 13.00 14.13 16.16 18.44 19.94 22.78 25.06 28.25 31.81 35.81 39.81 44.56 50.06 55.75 63.69
B 0.25 0.25 0.25 0.31 0.31 0.31 0.50 0.50 0.56 0.63 0.63 0.75 0.78 0.81 1.03
GAP
MBW, MBO, MBR Wheel Placement
Size 196 224 252 280 308 336 365 421 477 533 589
MBW 0.50 0.44 0.38 0.25 0.38 0.44 0.56 0.63 0.75 0.75 0.88
MBO 0.50 0.44 0.38 0.25 0.38 0.44 0.56 0.63 0.75 0.75 0.88
MBR 0.25 0.25 0.25 0.25 0.25 0.38 0.50 0.69 0.81 0.94 1.00
BCN Wheel Placement
Size 270 300 330 365 402 445 490 542 600 660 730
A 0.09 0.09 0.13 0.13 0.13 0.16 0.16 0.19 0.22 0.22 0.25
A