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This manual is to assist the engineer to avoid the most common fan problems caused by improper
storage, installation, operation and maintenance. HANDLING AND MAINTENANCE SHOULD
ALWAYS BE PERFORMED BY EXPERIENCED AND TRAINED PERSONNEL.
RECEIVING, HANDLING AND STORAGE
Rough handling during shipment and improper storage can cause damage that is not noticeable until the
fan is in operation. This can be avoided with proper storage and handling techniques.
Fan should be hoisted with slings placed around the fan housing. Touch up the scratch coated surfaces
during lifting, to prevent corrosion to occur at this area. Store the fan in a clean and dry place,
preferably indoor to ensure fan shaft, bearing and fan casing are protected against dust and corrosion.
Do not store the fan in a location where it will be subjected to vibration. This can cause the internal
surface to rub against each other and damage the bearings.
START-UP CHECK LIST
Before putting any fan into initial operation the manufacturer's instruction must be followed. Complete
the following checklist to make sure that the fan is ready to run.
Lock out the primary and all secondary power sources.
Ensure that all fastener, particularly impeller fastener, are tight prior to
start-up. Do not re-use locking fasteners.
Regularly check impeller fastener for tightness.
Spin impeller to see whether it rotates freely and is not grossly out of balance.
Inspect impeller for correct rotation for the fan design.
Properly secure all safety guards.
Switch on the electrical supply and allow the fan to reach full speed.
Check carefully for :- (1) Excessive vibration
If any problem is indicated, SWITCH OFF IMMEDIATELY. Lock out the
electrical supply, secure the fan impeller if there is a potential for wind
milling. (impeller turning due to a draft through the system).
Check carefully for the cause of the trouble and correct as necessary.
The fan may now be put into operation but during the first 8 hrs of running, it should be
periodically observed and checked for excessive vibration and noise. Checks should be make of
motor input current and motor & bearing temperature to ensure that they do not exceed
manufacturer's recommendation. After 8 hrs of operation, the fan should be shut down to check
the following items :-
(2) Unusual noise
(3) Proper amperage and voltage values
(1) All set screws and hold-down bolts
(2) Bearing housing temperature
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