COOK FCP - Manual (Page 7)

7
number 3RAR9 or equal.
10. Reapply beeswax to protect the set screw heads.
11. Install the new shaft by sliding the bearings to the
desired location using the measurement record earlier
and loosely mounting the bearing support. Bearing
bolts and bearing set screws should be loose enough
to allow shaft position later. Please note the wheel to
inlet clear matches as close as possible the diagram
on page 3
12. Tighten all hardware per the torque values as stated
on page 4 and follow the Operation Pre-Start Check
and Start-Up listed in this document.
After 24 hours of operation, retighten the setscrews to
the appropriate torque. This assures full locking of the inner
race to the shaft. Make sure the socket key or driver is in
good condition with no rounded corners. The key should be
fully engaged in the setscrew and held squarely to prevent
rounding out of the setscrew socket when applying
maximum torque.
Maximum Fan RPM
Troubleshooting
Low Capacity or Pressure:
• Incorrect direction of rotation. Make sure the fan ro-
tates in same direction as the arrows on the motor or
belt drive assembly.
• Poor fan inlet conditions. There should be a straight
clear duct at the inlet.
• Improper wheel alignment.
Excessive Vibration and Noise:
• Damaged or unbalanced wheel.
• Belts too loose; worn or oily belts.
• Speed too high.
• Incorrect direction of rotation. Make sure the fan ro-
tates in same direction as the arrows on the motor or
belt drive assembly.
• Bearings need lubrication or replacement.
• Fan surge or incorrect inlet or outlet condition.
Size
Maximum RPM
FCP FCP 66
120 4500 4500
150 3600 4300
180 2900 3600
245 2200 2700
270 2000 2400
300 1800 2200
330 1650 2000
365 1500 1800
Overheated Motor:
• Motor improperly wired.
• Incorrect direction of rotation. Make sure the fan ro-
tates in same direction as the arrows on the motor
or belt drive assembly.
• Cooling air diverted or blocked.
• Improper inlet clearance.
• Incorrect fan RPMs.
•Incorrect voltage.
Overheated Bearings
• Improper bearing lubrication
• Excessive belt tension.