MacroAir Technologies Airvolution Installation Manual - page 17

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MacroAir Technologies Inc.    www.macro-air.com    Toll Free: 866-668-3247    Build: January 9 2009 

the floor.  ONLY install the blades in this direction if the hub is painted black and you 

want the fan to blow air up.) 

ii) 

Slide one blade over any hub winglet.  Make sure it’s facing the right way! 

iii) 

Line up the bolt holes in the blade with the holes in the winglet. 

iv) 

Put a bolt from the included blade bolt pack through the outer hole, using a 

washer on top of the blade. 

B) 

Install safety links (often referred to as “boomerangs” because of their shape) and safety 

link extensions.  This step is REQUIRED — omitting it will void manufacturer’s warranty! 

i) 

Line up one hole of a safety link with the inner hole of one wing.  If desired, put a 

bolt through just to hold it — don’t put a nut on it at this point, though. 

ii) 

Line up the other hole of the safety link with the inner hole on the next wing.  

Place a second safety link on top, lining up all three holes. 

iii) 

Put a bolt through the holes — don’t use a washer on the top side of the blade. 

iv) 

Slide the safety link extension over the bolts from the bottom side of the blade 

and securely tighten an included nylon lock nut onto each of the bolts.  Do not 

use any washers!  The safety link will bend when the nut closest to the hub is 

tightened due to the angle of the hub winglets. 

v) 

Repeat for the rest of the blades. 

vi) 

Once the starting point is reached, pull out the positioning bolt from step i (if 

used).  Slide the end of the final safety link under the end of the first safety link.  

Put the bolt (back) through and attach like the rest, being sure to install the 

safety link extension on the underside of the blade. 

C) 

Check that all bolts are tightened firmly.  Blades should not rattle when the fan is running. 

Step 10

, Check Clearances And Guy Wire Tension For Safety 

A) 

Rotate the fan slowly one time by hand to find the position and blade with the least 

clearance from any possible obstructions.  If necessary, reposition the fan to prevent any 

dangerous conditions. 

Note: At rest, the blade tips hang lower than they will be in operation due to gravity.  For our largest fans, 

this deflection can be approximately six inches. 

B) 

Double check guy wire tension by attempting to move the fan in any horizontal direction 

and by trying to pull down on the guy wires.  They should be very difficult to move.  If 

there is visible slack in any guy wire or if any moves easily, re-tension them before 

proceeding. 

Fig 8