INSTALLATION
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Inlet and outlet ductwork should be free from obstructions.
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Avoid sharp bends on inlet or outlets.
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Do not use ductwork smaller in area than the fan.
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Flexible duct connections should be taut
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Ductwork connections should be well aligned.
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Inlet cones must be fitted to free inlet applications.
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Ensure that the fan orientation is correct for the required air flow direction.
IMPORTANT: External rotor motors only
All singled-speed three-phase fans must be wired in star only. If wired in delta they will burn out
and motor warranty is avoid. Refer to wiring diagram for details.
ROUTINE MAINTENANCE
Maintenance should always be performed by experienced and trained personnel. Do not attempt any
maintenance on a fan unless the electrical supply has been locked out or tagged out and the impeller has
been secured.
Under normal circumstances, handling clean air, the system should require cleaning only about a year.
However, the fan and system should be checked at regular intervals to detect any unusual accumulation.
The fan impeller should be specially checked for build-up of material or dirt which may cause an
Imbalance with resulting undue wear on bearings and belt drives. A regular maintenance program should
be established as needed to prevent material build-up.
Periodic inspection of the rotating assembly must be made to detect any indication of weakening of the
rotor because of corrosion, erosion, or metal fatigue.
