Utility and Centrifugal Fans
5
®
Fans – Rigging and Lifting
IMPORTANT
Fans should never be lifted by the shaft, motor,
motor cover or accessories.
NOTE
• Certain images are shown with higher lifting points
on the unit. These are tie-off points to balance the
load while lifting.
• Motor covers on certain size units and arrange-
ments need to be removed prior to rigging and
lifting as shown in diagram.
IMPORTANT
Spreader bars are recommended to prevent
damage to the unit. Failure to use spreader bars
may result in damage which becomes the installer’s
responsibility.
Optional Height Savings Bracket
For illustration purposes, some lifting location images
with isolation bases are shown with optional height
savings brackets. Lift unit using the corner hole
located in the isolation base; with and without the
height savings bracket.
Isolation Base
Isolation Base with
Height Savings Bracket
1. Before lifting, be sure that all shipping materials
have been removed from the unit.
2. Use standard lifting and rigging practices.
3. ALL lifting brackets on each unit must be utilized at
the same time.
4. Fan to be kept level during lifting and installation.
5. Spreader bars must span the unit to prevent
damage to the unit by the lifting cables.
6. Always test-lift the unit to check for proper balance
and rigging before hoisting to desired location.
7. Never lift unit in windy conditions.
8. Preparation of roof opening should be completed
prior to lifting unit to the roof.
Fans are to be rigged and moved by the lifting
brackets provided or by the skid when a forklift is
used. Location of brackets varies by model and size.
Handle in such a manner as to keep from scratching
or chipping the coating. Damaged finish may reduce
ability of fan to resist corrosion.
See coating repair section of this manual for details
regarding touch-up of damaged surfaces.
USFD-100, USF-200 and USF-300 Arrangement 10
Without Isolation Base
Sizes 7 thru 24
USF-300 Arrangement 10
Without Isolation Base
Sizes 27 thru 49
