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Rev. Date 090415

Maintenance Information

Guy Wire Check (if applicable): Checking a MacroAir fan’s Guy wires (if applicable) for tension

and inspecting for frayed sections could mitigate a problem before it occurs. 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 (including grease!) 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 that are now turning in the opposite direction.

Maintenance Plan:

Things to look for include: rust, cracked welds, unusual noise, hub migration/ movement, guy

wire loosening or movement.

Years 1-5:

One inspection on lift in ﬁrst year and one from the ground per year after one full year of service.

Years 6-10:

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.

MacroAir Technologies AirVolution 550 User Manual

Questions and Answers: