SPX Cooling Technologies 03-11A User Manual

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/ Cofimco Fan – Adjustable Hub /

User Manual 03-11A

SPX Cooling Technologies 03-11A User Manual

Fan Components

102

101

V11

102

104

VBA

Figure 1—Typical Fan Assembly

X14

W29

101

103

104

X12

200

103

W29

Order No.________________________________________

Trial Pitch Angle__________________________________

Final Pitch Angle_________________________________

Speed-rpm_ _____________________________________

Contract hp______________________________________

2

Note

Figure 2

Fan Assembly Instructions

The following instructions apply to installations having straight bores or tapered output shafts without split taper bushings.

It is convenient to preassemble the fan prior to installation on the driving shaft.

1—Select a large open area corresponding to the fan diameter.

2—Position the fan hub in the center of the work area with the center spool 101 oriented as shown in Figure 1.

3—Secure blade retention sleeves 104 to the blade 200 using machine bolt V11 and locking nut X12. Tighten 38" nut X12 to 40 ft·lbƒ.

4—Position the blade clamp blocks 103 around the blade shank so

that the blade 200 droops slightly downward when the blade clamp

hardware is tight.

TRAILING

 

 

EDGE

LEADING EDGE

5—Position the blade clamps and blade between the hub plates 102 to align bolt holes. Loosely install 58" bolts VBA, flat washers W29 and self locking nuts X14 to secure blades. Finger tighten all 58" nuts.

6—On fans where the blades overlap at the hub be sure to have the leading edge under the trailing edge of the forward blade. Refer to Figure 2.

7—Pull the blades radially outward until the blade retention sleeve

bears against the back side of the blade clamp.

 

 

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