5
GENERAL INSTALLATION INSTRUCTIONS
Foundations
Fan foundation must be flat, level and rigid. Where foundation is not completely flat, shims must be
placed under fan support at each anchor bolt as required. Bolting fan to an uneven foundation distorts
alignment and causes vibration.
Structural steel foundations should be heavily cross-braced for load support.
Table #1
TORQUE VALUES FOR SPLIT TAPER BUSHINGS
Bushing Size
MINIMUM RECOMMENDED TORQUE
(INCH-LBS)
H 95
B & P
192
Q & R
350
Table #2
SET SCREW TORQUE VALUES
SET SCREW SIZE
MINIMUM REQUIRED
TORQUE (INCH-LBS)
Diameter & No.
of Threads/Inch
Hex Size Across Flats
(Allen Wrench)
1/4-20
5/16-18
1/8"
5/32"
65
165
3/8-16
7/16-14
3/16"
7/32"
228
348
1/2-13
5/8-11
1/4"
5/16"
504
1104
NOTE:
If wheel set screws are loosened and/or wheel is removed from shaft, set screws
must
be replaced.
Set screws cannot be used more than once. Use knurled, cup point set screws with a locking patch.
OPERATION
Before Connecting Power
1.
Inspect all fasteners and retighten if necessary:
a.
Foundation bolts.
b.
Set screws in fan and wheel and V-belt drive (See Table #1 on preceding page).
c.
Housing, bearing and motor mounting.
2.
Inspection doors should be tight and sealed.
3.
Bearings should be checked for alignment and lubrication (See Bearing Maintenance, pages 4 and 5).
4.
Turn rotating assembly by hand to insure that it does not strike housing. If the wheel strikes the housing,
the wheel may have moved on the shaft or the bearings may have shifted in transit. Correction
must
be
made prior to start up.
5.
Check motor to insure proper speed and electrical characteristics.
6.
Check V-belt drive for alignment and correct belt tension.
7.
After wiring, energize motor for one second to check for proper rotation.