COOK CCP - Manual (Page 4)

4
Final Installation Steps
a. Inspect fasteners and setscrews, particularly fan
mounting and bearing fasteners, and tighten accord-
ing to the recommended torque shown in the table
Recommended Torque for Setscrews/Bolts.
b. Inspect for correct voltage with voltmeter.
c. Ensure all accessories are installed.
Field Balancing
Due to the innumerable methods for mounting the CCP
fan, field balancing must be performed after final installa-
tion. The fan must be dynamically two-plane balanced to
obtain a maximum vibration velocity of .0785 inches/sec-
ond. Failure to perform this field balance may result in
excessive vibration levels which can lead to early failure of
the fan and/or mounting structure and will void the war-
ranty.
Operation
Pre-Start Checks
a. Lock out all the
primary and
secondary
power sources.
b. Ensure fasten-
ers and set-
screws,
particularly those used for mounting the fan, are tight-
ened.
c. Inspect belt tension and pulley alignment.
d. Inspect motor wiring.
e. Ensure belt touches only the pulleys.
f. Ensure fan and ductwork are clean and free of debris.
g. Inspect wheel-to-inlet clearance. The correct wheel-
to-inlet clearance is critical to proper fan performance.
h. Close and secure all access doors.
i. Restore power to the fan.
Start Up
Turn the fan on. In variable speed units, set the fan to its
lowest speed and inspect for the following:
• Direction of rotation.
• Excessive vibration.
• Unusual noise.
• Bearing noise.
• Improper belt alignment or tension (listen for squeal-
ing).
• Improper motor amperage or voltage.
NOTICE! If a problem is discovered, immediately
shut the fan off. Lock out all electrical power and check
for the cause of the trouble. See Troubleshooting.
Inspection
Inspection of the fan should be conducted at the first 30
minute, 8 hour and 24 hour intervals of satisfactory opera-
tion. During the inspections, stop the fan and inspect as per
the Conditions Chart.
30 Minute Interval
Inspect bolts, setscrews, and motor mounting bolts.
Adjust and tighten as necessary.
8 Hour Interval
Inspect belt alignment and tension. Adjust and tighten as
necessary.
24 Hour Interval
Inspect belt tension., bolts, and setscrews and motor
nting bolts. Adjust and tighten as necessary.
Maintenance
Establish a schedule for inspecting all parts of the fan.
The frequency of inspection depends on the operating con-
ditions and location of the fan.
Inspect fans exhausting corrosive or contaminated air
within the first month of operation. Fans exhausting con-
taminated air (airborne abrasives) should be inspected
every three months.
Regular inspections are recommended for fans exhaust-
ing non-contaminated air.
It is recommended the following inspection be conducted
twice per year.
• Inspect bolts and setscrews for tightness. Tighten as
necessary. Worn setscrews should be replaced imme-
diately.
• Inspect belt wear and alignment. Replace worn belts
with new belts and adjust alignment as needed. Refer
to Belt and Pulley Installation, page 2.
• Bearings should be inspected as recommended in the
Conditions Chart.
• Inspect variable inlet vanes for freedom of operation
and excessive wear. The vane position should agree
with the position of the control arm. As the variable inlet
vanes close, the entering air should spin in the same
direction as the wheel.
• Inspect for cleanliness. Clean exterior surfaces only.
Removing dust and grease on motor housing assures
proper motor cooling. Removing dirt from the wheel
and housing prevent imbalance and damage.
Recommended Torque for Setscrews/Bolts (IN/LB)
Setscrews
Hold Down Bolts
Size
Key Hex
Across
Flats
Recommended
Torque
Min. Max. Size
Wrench
Torque
No.10 3/32” 28 33 3/8”-16 240
1/4” 1/8” 66 80 1/2”-13 600
5/16” 5/32” 126 156 5/8”-11 1200
3/8” 3/16” 228 275 3/4”-10 2100
7/16” 7/32” 348 384 7/8”- 9 2040
1/2” 1/4” 504 600 1”- 8 3000
5/8” 5/16” 1104 1200 1-1/8” - 7 4200
3/4” 3/8” 1440 1800 1-1/4” - 7 6000
Figure 2
Tolerance
Center Distance
Maximum
Gap
Up thru 12” 1/16”
12” up through 48 1/8”
Over 48” 1/4”
OFFSET ANGULAR OFFSET/ANGULAR
A
W
X
Y
Z B
CENTER
DISTANCE
(CD)
GAP GAP