© 2018 MacroAir Technologies Toll Free: 866 668 3247 Fax: 909 890 2313 www.macroairfans.com 61
Rev. Date 040218
Maintenance Information
Guy Wire Check (if applicable)
: Checking a MacroAir fan’s guy wires for tension and inspecting
for frayed sections could mitigate a problem before it occurs. The guy wires should be under
enough tension to prevent any movement in the motor unit or the extension tube. If the motor
can be moved by pushing on it, the guy wires need to be tightened. Fan owners should confirm
that the guy wires are not wrapped around any sharp edges. MacroAir recommends attaching
guy wires to the building with eye bolts or eye lags. If they are not already installed with eye bolts
or lags, we urge fan owners to install these in order to help keep the guy wires from fraying.
If guy wires are installed with turnbuckles, jam nuts should periodically be checked to ensure
tightness. If they are loose, the guy wire cables may need to be re-tensioned.
Airfoil Cleaning
: Depending on the type of commercial application the MacroAir fan is in, there
can be quite a bit of dust or other particulates that cling to the fan’s airfoils. While this may not
affect fan performance, we recommend fan owners keep airfoils clean by having a maintenance
person or skilled trade professional – who has experience using a lift – wipe the fan airfoils with
a rag or sponge using hot water or regular cleaning solutions. Please do not use chlorine or any
chemicals containing chlorine.
Safety Cable Check
: Each MacroAir fan comes with a safety cable. Depending on the fan model,
the safety cable either wraps around the building structure and the fan frame, or comes out
of the top of the fan and wraps around the building structure. The safety cable is an important
part of the safety system and acts as a last resort should an earthquake, collision, or similar
catastrophic event occur. As such, it’s vital for fan owners to ensure that it is intact and properly
secured.
Reverse Operation
: The beauty of MacroAir HVLS fans is that they are built to run in forward and
reverse mode. However, changing the direction of your fan can put initial stress on the fan if it
has not been properly checked. It is a good idea to make sure guy wires, safety cables and all
bolts and nuts are tight. Cleaning the fan before switching directions will prevent dust and other
particles from falling off the fan airfoils when turning in the opposite direction.
Maintenance Plan:
Things to look for include: properly torqued fasteners, rust, cracked welds, unusual noise, hub
migration/movement, guy wire loosening or movement.
Year 1-10:
One inspection on lift per year.
Year 11 and beyond:
Annual inspections from a lift and seasonal inspections both before and after the busy season
from the ground.
NOTE:
If there are issues or concern discovered during an inspection, please contact the service
and technical support department at MacroAir for help.
