Centrifugal, Industrial and Filtered Supply
4
Fans - Rigging and Lifting
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.
IMPORTANT
Fans should never be lifted by the shaft, motor, motor
cover or accessories.
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.
Guards – Motor Cover, Weatherhood,
Shaft, Belt, Inlet or Outlet Guard
Do not operate fans without proper protective devices in
place. Failure to do so may result in serious bodily injury
and property damage. Check local codes to ensure
compliance for all protective devices.
Access Doors
Before opening access doors, ensure the fan wheel has
stopped moving and that the wheel has been secured
from being able to rotate. Do not operate fan without
access door in its fully closed position.
Air Pressure and Suction
In addition to the usual hazards associated with rotating
machinery, fans also create a dangerous suction at the
inlet. Special caution needs to be used when moving
around a fan, whether it is in operation or not. Before
start-up, make sure the inlet area is clear of personnel
and loose objects.
Typical Arrangement 10 without Isolation Base
Typical Arrangement 4 Without Isolation Base
Typical with Isolation Base
If the fan assembly has an isolation base, lift the
entire assembly by the four corner holes located in
each corner of the base. This is the case for both the
standard base or base with height savings bracket.
Isolation Base
Isolation Base with
Height Savings Bracket
