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Installation manual 1000H 

Page 1 of 10 

May 2015 

Tuf-Lite II

® 

Fans 

1000 Series  
Auto-Variable

®

 Hub

 

 

INSTALLATION MANUAL

 

 

Hudson Auto-Variable

®

 Hubs and Tuf-Lite II

®

 Fan Blades 

 

Hudson Auto-Variable

®

 (AV) hubs feature Timken tapered roller bearings and synthetic lubricants. All components are 

suitable for high and low temperature operation and are interchangeable (except hub bodies) in 4, 5, or 6 blade configu-
rations. Hudson AV hubs are durable and designed for low maintenance and energy saving operation. 
 
Hudson Tuf-Lite Il

®

 (white, prev. blue) fan blades are made from fiberglass reinforced vinyl-ester resin having a very 

high strength-to-weight ratio and superior ultra-violet and corrosion resistance. An elastomeric blade/holder joint cover 
(not shown) prevents moisture from entering blade. 
 
The individually balanced blades can be replaced independently—matched sets are not required. 

Summary of Contents for Tuf-Lite II 1000 Series

Page 1: ...re interchangeable except hub bodies in 4 5 or 6 blade configu rations Hudson AV hubs are durable and designed for low maintenance and energy saving operation Hudson Tuf Lite Il white prev blue fan blades are made from fiberglass reinforced vinyl ester resin having a very high strength to weight ratio and superior ultra violet and corrosion resistance An elastomeric blade holder joint cover not sh...

Page 2: ...ed Tighten set screw in R 2 bushing flange to lock it on shaft Q 2 bushings have no set screw Set coupling squarely on bushing and install the three 3 3 8 cap screws Using torque wrench with 9 16 socket tighten bolts evenly to recommended stand ard of 29 ft lb dry See Figure 1 Figure 1 ASSEMBLY WITH TAPERED SHAFT Align keyways and install coupling evenly on tapered shaft Install key in keyways the...

Page 3: ...ard of 125 ft lb lubricated or 130 ft lb torque Figure 4 Rigidly attach dial indicator to the air line support or other sta tionary object Measure run out of the rotary joint See Figure 5 Rotate hub 360 to locate point of minimum reading on the dial set indicator to read zero at this point Rotate coupling 360 while watching indicator at rotary joint for misalignment reading Total indicated run out...

Page 4: ...uty For reverse acting hubs fails to minimum air flow on loss of instrument air pressure pitch angle should be set with 15 psi instrument signal and 55 psi supply air pressure applied See INSTALLING AIR LINES After desired pitch angle is set raise and lower end of fan blade and find mid point of blade travel Hold blade at the mid point Pull blade back so that it sits against blade clamp Push blade...

Page 5: ...t touching blades See Figure 10 Figure 10 NOTE The purpose of the seal disc is to prevent hot air from recirculating back down through the hub increasing efficiency CHECKING TIP CLEARANCE Rotate fan in position inside fan ring to check tip clearance See Figure 11 Tip clearance recommendations for specific fan diameters are noted in table Figure 11 Fan Size ft Minimum Maximum 5 through 9 1 4 1 2 10...

Page 6: ...PPLY See Figure 15 Instrument line hookup is all that is necessary before operating Instrument air pressure should be 3 15 psi Valve positioners are adjusted for 3 psi instrument starting point Supply air pressure should be set to level according to table below Figure 15 BIAS RELAY Connect both supply and instrument lines Check instructions included with bias relay If problems are encountered cont...

Page 7: ... available motor amps nameplate rating motor could be overloaded in winter Design pitch angles usually do not use all available horsepower therefore motors will not be overloaded at lowest winter temperatures if preset pitch re mains unaltered For the fans that have remained idle such as a shut down or turn around it is highly recommended to re verify the torque on the blade clamps before putting ...

Page 8: ...Cap Screw 1 2 NC x 1 16 20 24 47 73726 Lock Washer 1 2 NC 16 20 24 48 70701 Blade Clamp Bolt 5 8 NC x 7 w Nut 8 10 12 49 73730 Lock Washer 5 8 NC 8 10 12 50 ITEM NO P N DESCRIPTION QTY BLDS PER HUB 4 5 6 51 65003 65016 Blade Clamp Half Aluminum Std Blade Clamp Half Gray or Ductile Iron Opt 8 10 12 52 71066 71064 71065 Oil Filler Assembly 1 3 8 NPT Nipple 1 3 8 NPT Elbow 1 3 8 NPT Plug 1 1 1 53 625...

Page 9: ...Installation manual 1000H Page 9 of 10 May 2015 HUDSON PRODUCTS CORPORATION Auto Variable Hub Series 1000H ...

Page 10: ...c Flo Steamflo Thermflo Tuf Edge Tuf Lite Tuf Lite II and Tuf Lite III are registered trademarks of Hudson Products Corporation 2012 Hudson Products Corp All Rights Reserved 9660 Grunwald Rd Beasley Texas 77417 8600 Phone 281 396 8100 Fax 281 396 8388 1 800 634 9160 24 Hours EMAIL hudsonproducts hudsonproducts com http www hudsonproducts com ...

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