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Optional Accessory
Installation
Whisper Quiet Fan
Installation
FLAT WASHER
FLAT WASHER
SEAL WASHER
SEAL WASHER
Figure 24. Remove Seal Disk Figure 25. Attached to Blade Shanks
Figure 26. Remove Shipping Restraint Hardware Figure 27. Lift Fan From Crate
Model Number Bushing Type Bushing O.D. Hex Key Size Torque
1020-x U 4” 10mm 50 Ft-Lb
1222-x, 1424-x W 5.5” 14mm 90 Ft-Lb
Table 9. Bushing Torque
Figure 29. Key LineupFigure 28. Fan Positioning
Figure 31. Replace Seal DiskFigure 30. Bushing Bolts
Seal Disk
Remove Nut