Installation Instructions PowerFlo™ Fans

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1.2 Pre-installation Planning

The installation of your new Amarillo Chittom AirFlo PowerFlo fan is simple and with a little planning can be accomplished very quickly. One person can perform the installation provided a means of lifting the hub into position is available.

For most installations, the fan shaft key is provided with the shaft. Check to make sure the key is available and that the shaft is clean and in good condition. This is a good time to double check that the correct size bore has been ordered for the fan bushing.

A list of tools is provided below for your reference. The digital protractor as shown is the easiest and generally the most accurate for setting blade pitch. one is not available, you can order one through Chittom International, Inc. or you may use a bubble protractor with 1/2 degree or finer increments that is available through better local tool distributors. A smaller torque wrench is shown and may be desirable for tightening the split taper bushing bolts since excessive torque on these bolts may cause damage.

A	Torque Wrench
B	Box End Wrench	I 1/8 for 34" Bolts	3/4 for 1/2" Bolts
C	Socket (Bshg Hdwe)	9/16 for 3/8" Bolts	3/4 for 1/2" Bolts
D	Socket (Blade Hdwe)	1 1/16 for 3/4 Nuts	3/4 for 1/2" Bolts
E	Allen Wrench	1 1/8 Hex for 1/4" Set Screw
F	Plain Blade Screw Driver
G	Precision Protractor (For blade pitch adjustment)
H	Straight Edge (For blade pitch adjustment)

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