COOK FCRU - Manual (Page 6)

6
This warranty gives only the original purchaser placing the
fan in service specifically the right. You may have other legal
rights which vary from state to state.
For fans provided with motors, the motor manufacturer
warrants motors for a designated period stated in the
manufacturer’s warranty. Warranty periods vary from
manufacturer to manufacturer. Should motors furnished by
Loren Cook Company prove defective during the designated
period, they should be returned to the nearest authorized
motor service station. Loren Cook Company will not be
responsible for any removal or installation costs.
Troubleshooting
Problem and Potential Cause
Low Capacity or Pressure
•Incorrect direction of rotation. Make sure the fan rotates 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 rotates in same direction
as the arrows on the motor or belt drive assembly.
•Bearings need lubrication or replacement.
•Fan surge.
Overheated Motor
•Motor improperly wired.
•Incorrect direction of rotation. Make sure the fan rotates 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.
shaft position later.
15. Follow step 2 thru 6 in reserve order to re-assembly
unit. Please note the wheel to inlet clear matches as
close as possible the diagram on page below
16. Tighten all hardware per the torque values as stated on
page 2 and follow the Operation Pre-Start Check and
Start-Up listed in this document.
Wheel-to-Inlet Clearance
The correct wheel-to-inlet clearance is critical to proper
fan performance. This clearance should be verified before
initial start-up since rough handling during shipment could
cause a shift in fan components. Refer to wheel/inlet
drawing for correct overlap.
Adjust the overlap by loosening the wheel hub and
moving the wheel along the shaft to obtain the correct value.
A uniform radial gap (space between the edge of the cone
and the edge of the inlet) is obtained by loosening the
bearing bolts and set screws which will allow for correct
repositioning.
Spare parts
Spare parts are not needed for the first year of operation. If
spare parts are desired, then it is suggested that a spare
motor and impeller be ordered for direct drive fans. For belt
drive fans, in addition to the motor and impeller, it is
suggested that a spare set of bearings, shaft, sheaves, and
belts be ordered.
When ordering spare parts, specify the parts desired, the
fan model number, and the fan serial number. Contact your
local sales representative for price and delivery.
Limited Warranty
Loren Cook Company warrants that your Loren Cook fan
was manufactured free of defects in materials and
workmanship, to the extent stated herein. For a period of one
(1) year after date of shipment, we will replace any parts
found to be defective without charge, except for shipping
costs which will be paid by you.
This warranty is granted only to the original purchaser
placing the fan in service.
Size
Maximum
Overlap
60 - 195 5/8”
210 - 270 3/4”
300 - 445 1”
490-730 1-1/4”
100 5/8”
Radial Clearance
Overlap
Wheel / Inlet Overlap
Corporate Offices: 2015 E. Dale Street Springfield, MO 65803 417.869.6474
lorencook.com
LOREN COOK COMPANY
FCE IOM - June 2013