4 Introduction
© 2020 MacroAir Technologies Toll Free: 866 668 3247 Fax: 909 890 2313 www.macroairfans.com
Controller 30 Operation Manual 90-30016-00 Rev A-01 Date: 031920
Key Safety Systems, cont.
⚠WARNING: Safety Cable and Guy Wires. Install safety cable on EVERY fan. Install guy wires
on every fan, unless otherwise specified. Properly installing the guy wires will keep the fan stable
in case of earthquake or in “outdoor” installations where high wind conditions may occur. The
safety cable, if installed per MacroAir specifications, will prevent the fan from falling in the
unlikely event that the mounting system should fail.
⚠WARNING: Safety Cable. A MacroAir fan should never be run without a properly installed
safety cable, which is supplied with every fan along with all required hardware. You must install
a safety cable for the warranty to be in effect.
⚠WARNING: Blade Safety Links. Install the complete set of extended blade safety links, which
connect each blade to the adjacent blades and reinforce the area between the mounting holes.
This is an important precautionary measure that will help prevent a blade from falling should
one break off at the hub for any reason.
⚠ATTENTION: Mark the Floor to Alert Personnel. When mounting a fan in an area where
materials may be elevated into its path, MacroAir recommends marking or painting the floor
with a large crosshatched circle to alert personnel of the overhead location of the fans.
Mounting Guidelines
⚠WARNING: Weight Considerations. We recommend that a building structure be capable of
holding approximately twice the stated hanging weight of the fan. If there is some doubt of this,
a professional contractor or architect should perform a thorough evaluation of the building prior
to purchasing the fans. MacroAir provides guidelines for mounting fans, however it is the sole
responsibility of the building owner and installer to ensure the safety of the mounting system,
that the building structure is sound, and that the installation complies with all federal, state, and
local codes.
⚠WARNING: Torque. The maximum torque (twisting force) that must be handled by the
mounting system, including the building structure, occurs at fan startup. For a 24-foot fan, the
maximum potential starting torque is 137 Ft-Lbs. When standard electrical controls are installed,
the fan will never begin to approach this maximum because the standard variable-speed control
system uses the soft-start fail, or when a fan is installed as a single-speed model without the
variable speed control system (rare), full torque might be applied to the mounting system, so it
is important that it be adequate to withstand 137 Ft-Lbs. torque.
⚠ATTENTION: Check Federal, State, and Local Codes. Check all relevant codes to make sure
that all product certifications, product listings, and building regulations are met. Code
compliance is the responsibility of the installer.
⚠WARNING: Welding. DO NOT attach the fan or fan mounting components to the building
structure by welding that component to the structure. DO NOT cement the fan to the structure.
