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1. 7 ba D 1 44 4 19 Miscs Pik lwin Hab Angie Tied Hab Angie AE ma Ap vw gi marma MP me ad Sarma 1000 Cp 338 ve 16141134134 _ IEE IE 2 3 PM Mis Hub Hob 2390639 e Ange OP Med 10 et Saa 3506 A Table 12 Blade angle settings in degrees for Adjustax S vaneaxial fans REFERENCE SETTING REFERENCE SETTING HUB B ROTOR DIAM BLADE ANGLE IN DEGREES 231 2 5 27 29 3 40 43 45 48 20 REFERENCE SETTING REFERENCE SETTING HUB REFERENCE SETTING HUB C ROTOR DIAM BLADE ANGLE IN DEGREES D ROTOR DIAM BLADE ANGLE IN DEGREES E ROTOR DIAM BLADE ANGLE IN DEGREES 21 Appendix B Exploded views of fans Adjustable pitch belt drive fan 31 32 ITEM NUMBERS CASING ASSEMBLY FAN SUPPDRT SUPPORT BRACE SUPPORT MTG HARDWARE ELECTRIC MOTOR MOTOR MOUNTING PLATE ROTOR ASSEMBLY ROTOR NUT AND LOCKWASHER INLET BELL INLET BELL MTG HARDWARE ALUMINUM NOSE NOSE MOUNTING HARDWARE INLET SCREEN GUARD SCREEN GUARD CLIP SHAFT BEARING BEARING FAN SHEAVE MOTGR SHEAVE V BELTS BELT GUARD GREASE LEADS END CAP FRONT END CAP REAR NOT SHOWN HUB INSERT INSERT LOCK RING HEX SOCKET HEADLESS SET SCREW Ordering Repair Parts e Give Fan Mo
2. When installed above ground level the fan must be located near or above a rigid wall or heavy column Overhead platforms or supports must be rigidly constructed level and sturdily braced in all directions Equipment mounted If fan is mounted on equipment with parts that vibrate fan support must be designed to prevent this vibration from being carried to the fan The natural frequency of the support should differ from the fan running speed by at least 20 Use of vibration isolators under the fan is recommended Suspended installation For a ceiling suspended installation proper vibration hangers must be used as shown in Figure 4 including thrust isolator to limit axial movement For installation in ductwork see Figure 5 Suspension hangers must provide sufficient load bearing capacity to support fan drive and duct Figure 5 Ductwork supported installation All supporting points must be uniformly located so there is no twisting or distortion through the fan unit Also the intake should be carefully arranged to direct a smooth and uniform air flow into fan rotor When installing the fan be sure to allow space for service functions such as e Removing motors and fan rotors Lubrication Inspection and service Adjusting blade pitch settings V belt replacement and alignment and motor base adjustment If the fan is to be ductwork connected provide access doors for internal inspection Install all wir
3. INLET BELL MTG HARDWARE ALUMINUM NOSE NOSE MOUNTING HARDWARE INLET SCREEN GUARD SCREEN GUARD CLIP CONDUIT BOX KIT PARTS MAIN CONDUIT PIPE MOTOR GREASE LEADS ROTOR NUT AND LOCKWASHER ACTUATOR LINKAGE ACTUATOR LEVER BAR LEVER BAR ADJ MECHANISM ADJ MECHANISM GREASE LEADS HUB INSERT INSERT LOCK RING HEX SOCKET HEADLESS SET SCREW 13 Controllable pitch adjusting mechanism 500988 1 3 4 5 6 8 9 10 11 12 25 ITEM NUMBERS BEARING RETAINER MOUNTING HARDWARE BEARING RETAINER FEMALE CONNECTOR BEARING LOCKNUT AND LOCKWASHER BEARING SPACER MULTI DISC SEAL SELF ALIGNING BALL BEARING BEARING HOUSING ADJUSTING DISC SHOULDERED INSERT ANTI ROTATION ROLLER ASSEMBLY ANTI ROTATION PIN ASSEMBLY Controllable pitch adjusting mechanism 500988 257 ITEM NUMBERS 1 CLEVIS 2 ROD END BEARING 3 PIN 4 RETAINER 5 HARDWARE RETAINER 6 BEARING RETAINER 7 HARDWARE BEARING RETAINER 8 BEARING LOCKNUT AND LOCKWASHER 9 BEARING SPACER 10 MULTI DISC SEAL 11 SELF ALIGNING BALL BEARING 12 BEARING HOUSING 13 ADJUSTING DISC 14 SHOULDERED INSERT 15 FEMALE CONNECTOR 16 ANTI ROTATION PIN ASSEMBLY 17 ANTI ROTATION ROLLER ASSEMBLY Ordering Repair Parts e Give Fan Model gt lt e Give Fan Serial Number NI ITEM NUMBERS 1 C P BLADE 2 TEFLON WASHER 3 BUSHING 4 26 1 2 HUB 5 HUB INSERT 6 SPACER 7 THRUST WASHER 8 BUTTON HEAD
4. electronic hydraulic or manual Others may be a combination of electro pneumatic or electro hydraulic The actuator is connected to a lever or other push pull device which is connected by way of a linkage system to each blade The maximum blade angle is set at the factory and should not be increased unless approved by the New Philadelphia Division The actual blade angle can be measured at any point within the pitch range using the blade angle measurement procedure in Appendix A VII Pre startup checklist Before initial startup or after servicing perform this checklist 1 Carefully review all prior work All foundation bolts and bearing locking collars must be tight Remove all loose material from duct or area in front of fan intake 2 Align V belt drive All V belt fans that are shipped assembled have been factory aligned However because of rough handling during shipping alignment must be checked as follows a Be sure sheaves are locked and in position b Check that the key is firmly seated in keyway c Check alignment by placing straight edge or taut cord across faces of the driving and driven sheaves The motor and fan shafts must be parallel with V belts at right angles to shafts 3 Check bearing alignment and lubrication 4 Turn fan rotor over by hand to check that it runs free and does not bind or strike housing If rotor strikes the housing a For direct drive C face mounted motor arrangement ch
5. 5 RETAINING RING 6 WASHER 7 UNBRAKO CAPSCREW 8 HUB 9 BLADE 10 APPLY ANTI SEIZE COMPOUND Adjustax S belt drive ITEM NUMBERS 1 CASING ASSEMBLY 2 FAN SUPPORT 3 ELECTRIC MOTOR 4 MOTOR MOUNTING PLATE 5 ROTOR ASSEMBLY 6 INLET BELL 7 INLET BELL MTG HARDWARE 8 ALUMINUM NDSE 9 INLET SCREEN GUARD 10 SCREEN GUARD CLIP 11 SHAFT 12 BEARING 13 BEARING 14 FAN SHEAVE 15 MOTOR SHEAVE 16 v BELTS 17 BELT GUARD 18 GREASE LEADS 19 END CAP FRONT 20 END CAP REAR NOT SHOWN 21 SPLIT TAPER LOCK BUSHING WEATHER COVER Ordering Repair Parts Give Fan Model e Give Fan Serial Number Adjustax Type S direct drive ITEM NUMBERS 1 CASING ASSEMBLY 2 FAN SUPPORT 3 ELECTRIC MOTOR 4 MOTOR MOUNTING HARDWARE 5 ROTOR ASSEMBLY 6 INLET BELL 7 INLET BELL MTG HARDWARE 8 ALUMINUM NOSE 9 INLET SCREEN GUARD 10 SCREEN GUARD CLIP 11 CONDUIT BOX KIT PARTS 12 MAIN CONDUIT PIPE 13 MOTOR GREASE LEADS 14 SPLIT TAPER LOCK BUSHING 30 Vaneaxial B belt drive ITEM NUMBERS 1 CASING ASSEMBLY 2 FAN SUPPORT 3 ELECTRIC MOTOR 4 MOTOR MOUNTING PLATE 5 ROTOR ASSEMBLY INLET BELL 7 INI FT MTG HARDWARE 8 INLET SCREEN GUARD 9 SCREEN GUARD CLIP 10 SHAFT 11 BEARING 12 BEARING 13 FAN SHEAVE 14 MOTOR SHEAVE 15 V BELTS 16 BELT GUARD 17 GREASE LEADS 18 END CAP FRONT 19 END CAP REAR NOT SHOWN 20 CAS
6. CONDITIONS 500 14 ALL Standard 6 6 6 4 4 2 2 1 0 Severe 3 3 2 2 1 1 1 0 17 1 2 ALL Standard 6 4 4 2 1 1 2 0 Severe 3 2 2 1 1 2 1 2 2 0 21 143 284 Standard 4 4 2 1 1 2 0 Severe 2 2 1 1 2 1 2 I 326 365 Standard 2 2 1 1 1 2 Severe 1 1 1 2 1 2 1 4 26 1 2 143 284 Standard Severe Standard Severe Standard Severe 286 365 404 445 O GO Q O GO N AN G N O O O O 16 NOTICE Lubrication of Controllable Pitch Mechanisms The New Philadelphia Division does not recommend CONTROLLABLE PITCH FANS require periodic ee eae one setae AA pa 0 lubrication for fan pitch control mechanisms and 6 Motors with Class H Type RN or Class H Type bearings depending upon hub size or style in addition to insulation systems nuclear applications MUST be the fan motor bearings An external grease fitting is lubricated with Chevron SRI No 2 with no substitutions located on the actuating bar of the lever assembly or on permitted DO substitute other manufacturing the casing near the actuating bar or on the mechanism brands without first consulting our factory If it is end bell PUMP BY MEANS OF HAND GREASE GUN AS desired to change lubricant follow instructions for INDICATED BELOW lubrication and repeat lubrication a second time after 100 hours of service Care must be taken to look for CAUTION signs of lubricant incompatibility such as extreme Grease slowly to prevent da
7. adapter sleeve and release pressure on threads Use spanner wrench to further tighten locknut Repeat this procedure until desired clearance is obtained 9 Secure locknut by bending lock washer tang onto locknut slot 10 Insert C spacer in fixed bearing base on locknut side 11 Lubricate bearings with grease or oil per Section XIV Lubrication 12 Replace top half of pillow block cap Use a sealant such as Permatex on the split surfaces Make sure races are not cocked in housing before tightening cap bolts and that the bearing seals are aligned with shaft 13 To disassemble reverse the above 11 Fixed Cartridge Ball Bearings These fixed cartridge type ball bearing pillow blocks Figure 12 are always shipped pre lubricated assembled and ready for installation Figure 12 Fixed cartridge ball bearings 1 Slip each bearing pillow block locking collar into position on the fan shaft The locking collars will face each other 2 Align shim and bolt pillow blocks in position on their mounting surfaces Mount so fan rotor does not strike any part of fan housing 3 To install the locking collar Fig 13 a Mate cam of collar with cam of bearing inner ring b Pressing collar lightly against inner ring turn collar in direction of shaft rotation until it grips shaft and inner ring c With drift pin in collar hole tighten collar in direction of shaft rotation to lock d Tighten setscrew in collar u
8. age and hub size of the fan All current Axivane Fans Philadelphia Ohio Please advise fan serial number are equipped with Teflon type thrust and radial bearings stamped on the nameplate and the fan model number which require no lubrication Axivane Fans when ordering replacement parts XV Safety Air handling equipment must be properly installed and Equipment operating on corrosive abrasive and or toxic operated by trained and experienced personnel To do systems require extreme precautions with access doors otherwise is dangerous and may cause injury The drains and shaft seals Only trained operating and installation must meet all pertinent state and local safety maintenance personnel should work on such special codes and requirements of OSHA equipment and only after testing for the presence of toxic Seller shall not be liable for any injury to persons or property gasses or explosive chemical deposits Coupling guards resulting from improper installation operation repair or shaft guards v belt drive guards and inlet and outlet safety maintenance of equipment by customers or third parties screens are recommended for all equipment 17 Appendix Procedure to verify set blade tip angle using a template All New Philadelphia Division adjustable pitch fan blades are set at the factory to the blade setting tip angle required to produce the specified flow and pressure The installer or owner may wish to verify that the blade
9. angle is correct or may wish to change this angle if the operating point must be changed The following procedure details steps to verify or change blade tip angles utilizing a blade angle template The line connecting the leading and trailing edges of the blade is the chord line The tip angle is the angle between the chord line and the direction of rotation See Table 11 Blade Tip Angle Settings 1 Create a blade template on a piece of flexible material draw a straight line and label it Rotation 2 Gain access to fan inlet This may require removal of inlet screens or access doors Note For two stage fans access to the second stage will require removal of the second vane section 3 Clean an area of the fan housing slightly larger than the blade template With a pencil or marker draw a line in the rotation direction on the fan housing 4 To verify tip angle a Position the rotation line of the blade template over the rotation line marked on the fan housing b Position blade tip over rotation line and mark a point on the template at the leading and at the trailing edge of the blade tip Draw a line between these points and label as the chord line c Measure the angle between the chord line and the rotation This is the tip angle of the blade d Using this template compare tip angles of all blades to ensure angles are identical 5 To set tip angle a Make a blade angle template with the chor
10. bearings SAUD A ESL lt aoe Il 1 Set lower section of split housing in position on its mounting surface If an oil sight gauge is used install it in the pillow housing in place of one of the lower plugs 2 Apply anti seize compound on the outside diameter and threads of tapered sleeve and face on locknut to help in tightening adapter 3 Assemble multi labyrinth seal ring if used adapter sleeve roller bearing lock washer locknut and second seal loosely and slip onto shaft 4 Hand tighten locknut onto adapter sleeve as tightly as possible 5 Insert feeler gauges between outer ring and the unloaded roller on both sides of bearing until snug Record this figure 6 Lower shaft with bearing and adapter assemblies into lower half of pillow block housings Be sure multi labyrinth seals are aligned with seal grooves Bolt lower housing to bearing mounting surface after shimming and aligning Pillow blocks should be mounted so fan rotor and shaft do not strike fan housing 7 Position floating bearing centrally in lower housing For a fixed bearing position bearing for insertion of C spacer that is inserted on locknut side to keep the bearing flush with the opposite side of housing 8 Tighten locknut with a spanner wrench until snug Place brass bar against locknut and strike bar several times with hammer Rotate shaft to distribute blows on locknut These blows drive inner ring farther up on
11. grips shaft and inner ring Tighten collar with a drift pin Tighten setscrew in collar until allen wrench twists 6 Replace gasket 10 and cover 2 packing 7 and plate 11 on end cover 7 Draw up screw holding plates just enough to hold packing rings securely in place 8 Fill with grease in top cup 6 until overflow cup 9 is full Fill only when fan is not running 9 To disassemble reverse this procedure Be sure to remove burr on shaft caused by the setscrew with a honing stone before removing the pillow block from the shalt Procedure for reinstallation of new pillow blocks in belt driven Series 1000 2000 3000 fans using two fixed bearings Fans with 14 17 1 2 21 and 26 12 Hubs 1 Tighten bolts which hold the front pillow block to its mounting angle or mounting plate shim as necessary to center fan in casing for equal tip clearance at the tip of all blades 2 Position the front pillow block on the fan shait so that the front edge of the bearing is 1 3 8 from the back 6006 of the steel insert or shaft shoulder of the fan rotor This should give approximately 1 8 to 3 16 clearance between the inner fairing edge and the trailing edge of the fan rotor Figure 15 Fixed bearing series 300 pillow block Then tighten the set screws of the bearing locking collar into the slots in the shaft Tighten until the Allen wrench supplied with the bearing distorts 3 Tighten bolts which anchor
12. 0 Reversible assembly use this value to set torque wrench For verification of torque value acceptable values are 10 2Stock caution emblems with appropriate setting number may be used until stock is depleted Future emblems will have setting numbers written by shop See NCS30 for previous E O S 1385149 0 through 1385149 29 with appropriate setting number may be used until stock is depleted 1385149 30 through 1385149 53 with appropriate setting number may be used until stock is depleted Table 10 Adjustax S Unbrako cap screw torque setting Hub Series Torque ft Ib x D EI Table 11 Axivane blade angle settings Chord line NO STATIONARY ZD a O lt cm O Z BASE ROTOR DIA d d A Ti m BLADE ANGLE I 1 d h a m i TE CEP 5 L Tei l kise uy A I fE j P EAR 1 a g 4 i R A nar Ref Ku 1 I 0 w rg L is om mi 01 Mats Sen ci ki are pey pawa A L ke HE f l 6 amp Jal ke Li 1 1 sa L Ji i 4 1 d B 74 L Si F 2 vi m D I
13. 3 to determine when a fan is operating with too much vibration 14 Table 3 Allowable vibration at fan operating frequency Shut Down or Stop Disp Vel mills ips Corrective Action Alarm Disp Vel mills ips Initial Operation Disp Vel mills ips RPM Freq CAUTION Do not attempt to balance a mechanical problem or a dirty fan Notes 1 When the fan operating frequency falls between the above listed frequencies the values for the higher frequency should be used Example Fan speed of 2500 rpm use values of 3600 2 Displacement is a measured value with the probe or pickup seismic type positioned firmly on the fan housing flange for a radial indication in the desired plane of measurement Displacement is a peak to peak full wave value 3 Initial operation values are the expected values for clean well maintained and balanced fans operating at steady state conditions after the transient conditions of startup e g acceleration temperature changes etc have passed The values for measurement of equipment unbalance must be taken for the exact fan operating frequency filtering out extraneous values that can be measured for different frequency At times these values may not be obtained on new initial installations due to field conditions beyond the control of the company 4 Operation of any fan above corrective action alarm levels for a prolonged period of time or operation
14. CAP SCREW 9 FLAT WASHER 10 LOCK NUT 11 CLAMP 12 WASHER 13 NUT 14 SUPPORT WASHER 15 ROLLER 16 SOCKET HEAD SHOULDER SCREW 17 INSERT LOCK RING 18 HEX SOCKET HEADLESS SET SCREW 26 ITEM NUMBERS Simultaneously adjustable pitch fan 1 2 FAN SUPPDRT 3 SUPPORT BRACE 4 SUPPORT MTG HARDWARE 5 ELECTRIC MOTOR 6 MOTOR MOUNTING HARDWARE 7 ROTOR ASSEMBLY 8 INLET BELL 9 INLET BELL MTG HARDWARE 10 ALUMINUM NOSE 11 NOSE MOUNTING HARDWARE 12 INLET SCREEN GUARD 13 SCREEN GUARD CLIP 14 CONDUIT BOX KIT PARTS 15 MAIN CONDUIT PIPE 16 MOTOR GREASE LEADS 17 ROTOR NUT AND LOCKWASHER 18 HUB INSERT 19 INSERT LOCK RING 20 HEX SOCKET HEADLESS SET SCREW 21 ADJ MECHANISM 22 SHOULDERED INSERT 23 ADJUSTING NUT 24 ADJUSTING NUT MOUNTING HARDWARE Simultaneously adjustable pitch adjusting mechanism 500988 Ordering Repair Parts e Give Fan Model e Give Fan Serial Number Give Fan Number ITEM NUMBERS 1 SHOULDERED INSERT 2 ANTI ROTATION ROLLER ASSEMBLY 3 ANTI ROTATION ASSEMBLY 4 ADJUSTING DISC 5 ADJUSTING NUT 6 ADJUSTING NUT MOUNTING HARDWARE 27 30 controllable pitch rotor assembly ITEM NUMBERS 1 C P BLADE 2 TEFLON WASHER 3 BUSHING 4 30 HUB 5 TAPERED HUB INSERT 6 WEAR WASHER 7 THRUST WASHER 8 KNURLED SOCKET HEAD CAP SCREW 9 FLAT WA
15. DITIONS 1 thru 7 1 2 1800 RPM 3 years 1 year and slower 10 thru 75 1800 RPM and slower 1800 RPM 1 year and slower STANDARD CONDITIONS Eight hours per day normal or light loading clean 40 C 100 F maximum ambient 100 and greater 6 months SEVERE CONDITIONS Twenty four hours per day operation or shock loading vibration or in dirt or dust 40 50 100 120 F ambient CAUTION It is important to use the same type of lubricant as initially loaded at the factory If you must change the grade make or type of lubricant flush out all the old lubricant before changing Anti friction fan bearings The key to long life of bearings is the application of the proper lubricant at a frequency that is determined by your units operating conditions exposure to moisture and dirt and bearing temperature Lubricant Selection A good grade lubricant free from chemically active material is vital Use Chevron oil SRI No 2 Polyurea base or equal in all bearings For best results use the same product when re lubrication If you must change to a different grade make or type of lubricant flush out all the old lubricant thoroughly before changing If a lubricant is used at temperatures above its design limit the oil and base oxidize and thermally decompose into a gummy sludge Frequency of re lubrication The most common cause of bearing failure is not lack of lubricant but rather abrasion or oxidation re
16. Fan vibration and sound will be reduced when the fan is isolated from the supporting structure and duct system by properly sized commercially available rubber or spring isolators Heavy inertia pads are generally not required for Axivane fans Metal to metal connections at the fan should be avoided wherever possible Use of flex connectors is highly recommended See Appendix D Installation Guidelines NOTE A bad inlet condition will reduce fan efficiency cause an increase in fan noise level and possibly lead to premature rotor failure IV Foundation and supporting structures A proper foundation is absolutely essential It must be rigid and level ensuring permanent alignment of the fan drive and preventing excessive vibration Because of local conditions such as varying sub foundations and soil conditions and the possibility of resonant vibration the fan manufacturer cannot be responsible for foundation design The foundation should be designed by competent engineers to assure sufficient stability and to separate the natural vibration frequency of the foundation from the rotational frequency of the fan An unstable foundation or improper Installation can be a major contributor to excessive maintenance costs Poured concrete foundation The best fan foundation is poured concrete beneath the fan and all drive components A general rule of thumb the weight of concrete foundation should be three to five times the total weight of
17. HARDWARE INLET SCREEN SCREEN GUARD CLIP CONDUIT BOX KIT PARTS MAIN CONDUIT PIPE MOTOR GREASE LEADS ADJ MECHANISM GREASE LEADS HUB INSERT LOCK RING HEX SOCKET HEADLESS SET SCREW ITEM NUMBERS Controllable pitch fan with lever arm in casing 1 CASING ASSEMBLY FAN SUPPORT SUPPORT BRACE SUPPORT MTG HARDWARE ELECTRIC MOTOR MOTOR MOUNTING HARDWARE ROTOR ASSEMBLY INLET BELL INLET BELL MTG HARDWARE ALUMINUM NOSE NOSE MOUNTING HARDWARE INLET SCREEN GUARD SCREEN GUARD CLIP CONDUIT BOX KIT PARTS MAIN CONDUIT PIPE MOTOR GREASE LEADS ROTOR NUT AND LOCKWASHER ACTUATOR LINKAGE ACTUATOR LEVER BAR LEVER BAR ADJ MECHANISM ADJ MECHANISM GREASE LEADS LEVER BAR MOUNTING HARDWARE HUB INSERT INSERT LOCK RING HEX SOCKET HEADLESS SET SCREW ITEM NUMBERS CASING ASSEMBLY FAN SUPPORT SUPPORT BRACE SUPPORT MTG HARDWARE ELECTRIC MOTOR MOTOR MOUNTING HARDWARE ROTOR ASSEMBLY INLET BELL INLET BELL MTG HARDWARE ALUMINUM NOSE NOSE MOUNTING HARDWARE INLET SCREEN GUARD SCREEN GUARD CLIP CONDUIT BOX KIT PARTS MAIN CONDUIT PIPE MOTOR GREASE LEADS ROTOR NUT AND LOCKWASHER HUB INSERT INSERT LOCK RING HEX SOCKET HEADLESS SET SCREW 24 Standard controllable pitch fan ITEM NUMBERS CASING ASSEMBLY FAN SUPPORT SUPPORT BRACE SUPPORT MTG HARDWARE ELECTRIC MOTDR MOTOR MOUNTING HARDWARE ROTOR ASSEMBLY INLET BELL
18. Hf Howden Service Manual Installation and Maintenance of Axial Flow Fans Warning Failure to comply with these instructions could cause serious bodily harm or property damage and will void the warranty NP 484 9 99 Table of contents Section I General information ll Receiving Handling Storage lll Application recommendations Foundation Supporting structures V Installation VI Blade angle settings VIL checklist VIII Initial startup procedure and balance Dismantling fixed pitch and single blade controllable pitch fans X Reassembling fixed pitch and single blade controllable pitch fans Dismantling and reassembling controllable pitch fans Bearings XIII Maintenance XIV Lubrication XV Safety Appendix A Procedure to verify set blade tip angle and torque Appendix B Exploded views of fans Appendix C Troubleshooting Appendix D Installation guidelines 0 N NS O Q N CON G General information Introduction This manual provides the information necessary to install operate and maintain axial flow fans Maintenance guidelines and procedures are set so that your equipment will operate efficiently with minimum repair or replacement Read Section XV Safety before operating equipment It is strongly advised that an experienced erector supervis
19. SHER 10 TORQUE CLAMP WITH HELI COIL 11 WASHER 12 LOCKNUT 13 ROLLER 14 SOCKET HEAD SHOULDER SCREW 15 INSERT LOCK RING 16 HEX SOCKET HEADLESS SET SCREW ITEM NUMBERS 1 A P BLADE 2 WASHER 3 BLADE NUT 4 HUB INSERT 5 HUB 6 INSERT LOCK RING 7 SOCKET HEADLESS SET SCREW NOTE HUB SIZES 14 173 21 AND 30 ITEMS 4 6 AND 7 INSTALLED AS SHOWN HUB SIZES 265 ITEMS 4 AND 7 INSTALLED OPPOSITE AS SHOWN 28 2 Stage controllable pitch fan ee GO MOU A WAN pe 29 ITEM NUMBERS CASING ASSEMBLY FAN SUPPORT SUPPORT BRACE SUPPORT MTG HARDWARE ELECTRIC MOTOR MOTOR MOUNTING HARDWARE ROTOR ASSEMBLY A STAGE ROTOR ASSEMBLY SECOND STAGE INLET BELL INLET BELL MTG HARDWARE ALUMINUM NOSE NOSE MTG HARDWARE INLET SCREEN GUARD SCREEN GUARD CLIP CONDUIT BOX KIT PARTS MAIN CONDUIT PIPE MOTOR GREASE LEADS ADJ MECHANISM FIRST STAGE ADJ MECHANISM GREASE LEAD FIRST STAGE ADJ MECHANISM SECOND STAGE ADJ MECHANISM GREASE LEAD SECOND STAGE ROTOR NUT AND LOCKWASHER STAGE ROTOR NUT AND LOCKWASHER SECOND STAGE LEVER BAR FIRST STAGE LINKAGE ACTUATOR LEVER BAR ACTUATOR LEVER BAR SECOND STAGE MOTOR FRAME SUPPORT HARDWARE REAR VANE ASSEMBLY 30 BOOT AND PLATE ASSEMBLY TOP 31 BOOT AND PLATE ASSEMBLY BOTTOM Type S blade assembly O Ring type 29 1 ANCO NUT 2 RETAINING PLATE 3 HELICAL COIL 4 O RING
20. TLE NUT 21 WEATHER COVER Ordering Repair Parts e Give Fan Model e Give Fan Serial Number Vaneaxial Type B direct drive ITEM NUMBERS 1 CASING ASSEMBLY 2 FAN SUPPORT 3 ELECTRIC MOTOR 4 MOTOR MOUNTING HARDWARE 5 ROTOR ASSEMBLY 6 INLET BELL 7 BELL MTG HARDWARE 8 INLET SCREEN GUARD 9 SCREEN GUARD CLIP 10 CONDUIT BOX KIT PARTS 11 MAIN CONDUIT PIPE 12 MOTOR GREASE LEADS 13 CAPSCREW HEX HD 31 Appendix C Table 13 Troubleshooting Symptom Capacity or pressure below rating Vibration noise Overheated bearing Driver overloaded Cause Total resistance of system higher than design Speed too low Dampers or variable inlet vanes not properly adjusted Poor fan inlet or outlet conditions Air leaks in system Damaged rotor Rotation direction incorrect Rotor mounted backwards on Misalignment of V belts couplings or sheaves Unstable foundation Foreign material in fan causing unbalance Worn bearings Damaged rotor or motor Broken or loose bolts or setscrews Bent shaft Worn coupling Fan rotor or drive unbalanced 120 cycle magnetic hum due to electrical input Fan delivering more than rated capacity Loose dampers or VIV s Speed too high or fan rotating in wrong direction Vibration transmitted to fan from some other source Too much grease in ball or roller bearings Poor alignment Bent shaft Dirt in be
21. above shut down for any period of time may cause equipment failure and extensive damage as well as endangerment to personnel A corrective measure would be to retain an authorized service representative at service rates in effect at time of visit to inspect the installation suggest corrective measures as necessary and balance the fan if required Effort should be made to maintain vibration levels as close to the initial operation vibration levels as possible This will help to assure optimum equipment life expectancy 5 Equipment is run tested and balanced to standard internal specifications Since installation variables such as but not limited to foundations and mounting provisions vibration levels may vary somewhat from factory values 6 When a Vibration Isolation System is employed fan balancing should be performed with the isolator components locked out to establish a rigid structure The isolation components should be readjusted after balance Bearing Servicing and Cleaning When roller or ball bearings are disassembled for service 1 Remove bearing races from shaft place in a suitable container with a clean petroleum solvent or kerosene and soak If kerosene is used all parts must be wiped dry with a clean cloth Chlorothane Nur or mineral spirits can be used but some people object to the drying action on the hands Other solvents similar to Inhibisol r made by Peneton Company of Tenafly NJ can be used Revolve
22. and other air flow accessories Remove dirt which causes resistance to air flow and decreases volume of air supplied 3 V Belt drives Check belt wear alignment of sheaves and tension Replace belts with a complete set of matched belts new belts will not work properly with used belts because of length differences Belts must be free of grease 4 Rotor Inspect rotor blades for dust or dirt accumulation which unbalance fan Wrap bearings tightly with plastic film and clean with steam water jet compressed air or wire brush Be careful not to damage aluminum blades while cleaning Make sure rotor is centered to prevent blades from striking housing and rotating in proper direction 5 Hardware Check all foundation bolts rotor hubs set screws rotor locking bolts and bearing locking collars 6 Surface coatings Check condition of surface coatings and paints Repainting interior and exterior parts of fan and ductwork extends service life Select paint able to withstand operating temperatures and conditions 7 Shaft Check shatt for proper alignment shaft must not be cocked on bearings Misalignment can cause overheating worn dust seals bearing failure and unbalanced condition 8 Vibration Excessive vibration must not be permitted See Appendix C Troubleshooting for possible causes Table 3 Allowable vibration at fan operating frequency lists safe vibration levels 9 Bearings Check all beari
23. ange mounted Fig 9 or pillow block Fig 10 anti friction bearings The particular type of bearing ball or roller is carefully matched to the application The following subsections give assembly disassembly procedures for each bearing type If more detailed information is required contact the bearing manufacture The procedure below should be followed whenever assembling or disassembling any type of bearing 1 Inspect and thoroughly clean bearings if necessary If a bearing is disassembled mark its parts in relation to each other to avoid reassembly errors Do not mix parts of one bearing with another 2 Determine the type of pillow block and location of fixed bearing 3 Check all nameplates on fan for any special instructions 4 Mount bearings in position on the shaft following the procedures below for your type of bearing 5 Clean the shaft and remove burrs or other irregularities Be sure bearing is not seated on worn or flat sections Figure 9 Flange mounted fan shaft Type B Arrangement 9 Fans Through size 48 A Flange pillow block D Locking collar B Hex nut amp lock washer E Grease tube C Lubrication adapter F Fan shaft Figure 10 Pillow block mounted fan shaft Type B Arrangement 9 Fans Size 54 and Larger Adjustax Type S Arrangement 9 Fans Sizes 22 through 72 A Inner cylinder C Oil or grease tube B Grease or oil tube housing fitting D Cover bearing Flange C
24. arings Excessive belt tension Speed too high Volume flow rate under capacity because system resistance higher than design Specific gravity or density of gas greater than design rating Rotating direction wrong Rotor wedging or binding Motor wired wrong 32 Solution For adjustable pitch fans change the blade setting staying within the limits shown on the nameplate For belt drive fans the speed can be changed We recommend contacting the factory before making either change Check drive system Reset Increase speed provide turning vanes or baffles in ductwork Repair Contact factory Reverse electrically Correct See Section V Installation See Section IV Foundation and Support Structures Clean rotating components Replace Contact factory Tighten or replace Replace Replace Contact factory Check input line for high or unbalanced voltage Reduce speed close dampers or reset blade position Tighten or replace Reduce speed check for electrical reversal or reinstall rotor Poor insulation see Section IV Foundation Clean and regrease Realign Replace shaft Clean and lubricate Realign See Section V Installation Recheck driver Fan improperly specified application Fan improperly specified contact factory Reverse electrically Reinstall rotor Rewire consult electrical contractor Table 13 Troubleshooting Motor Symptom Cause Solution Armature unbalance Re
25. artridge Ball Bearings These flange cartridge type ball bearing pillow blocks are always shipped assembled pre lubricated and ready for installation as follows 1 Slip each bearing pillow block and extended inner race into position on the fan shaft 2 Bolt the pillow blocks in position on their mounting 10 surfaces after aligning The pillow blocks must be mounted so the fan rotor does not strike any part of the housing 3 Tighten the self locking cupped point setscrews securely onto the shaft Positive race to shaft lock is attained when the hardened cup point setscrews are tightened securely through the extended ends of the inner race 4 Fill the grease tube with grease Attach grease tube fitting to bearing housing Run grease tube to outside of fan housing Attach grease fitting to grease tube Follow this procedure for both bearings Be sure the grease tube is filled with grease 5 To disassemble reverse this procedure Be sure setscrews are loose 6 FAFNIR bearings have a separate locking collar Install the locking collar by following the procedure in Fixed Cartridge Ball Bearings page 11 Spherical Roller Pillow Blocks These fixed or floating type spherical roller pillow blocks Fig 11 are not pre lubricated and require assembly They do not have to be cleaned before installation as the bearing preservative coating is compatible with lubricants To install follow these steps Figure 11 Spherical
26. ations If you place your hand or finger upon the outside of unit its operation should feel smooth and free of vibrations This balance must always be maintained to assure long faithful service If operation is not smooth contact our Customer Service Department at New Philadelphia Ohio advising fan serial number stamped on nameplate and fan model number WARNING Axial fans should not be operated in the stall surge region The stall surge region is defined as any region in which the system resistance line does not pass through the normal operating area as shown in the fan performance curve Any attempt to operate this equipment in this stall region can be extremely dangerous and may resultin damage to equipment as well as to nearby personnel Operate this fan only in accordance with the installation operation and maintenance manual Fan performance curve is available from factory or sales representative IX Dismantling fixed pitch and single blade adjustable pitch fans See Appendix B Exploded Views of Fans Remove fan from duct work and or fan supports Then perform the following steps 1 Remove accessories if used Inlet cone inlet screen for V belt drive only weather cover and belt guard 2 To remove rotor WARNING When removing rotor always properly support rotor with slings to prevent personal injury and damage to equipment a Remove spinner or coverplate nosepiece if supplied by re
27. d cotter pin b If rotor is attached with QD hub apply a thick even layer of Loctite anti seize compound to outside of QD hub and to inside of rotor bore assemble rotor on taper seat of QD hub clean and lightly oil hex head draw up bolts insert bolts in QD hub using lock washers and flat washer alternately and evenly tighten to the torque shown in Table 2 Table 2 Tightening torque for QD hub bolts Hub size A AEDES c If rotor is held by retaining plate and locking bolt insert key apply anti seize compound on shaft slide rotor gently on shaft install retaining plate and locking bolt and hex bolt to motor shaft d lf rotor is held by locknut and washer insert key apply anti seize compound on shaft slide rotor gently on shaft install locknut and lock washer tighten locknut until rotor is properly seated on shaft bend lock washer tab into slot on locknut to prevent locknut from loosening 4 Remount fan Perform pre startup checklist before operating the unit WARNING Over or under tightening causes mechanical damage to the fan XI Dismantling and Reassembling controllable pitch fans Consult factory for assistance Service personnel are available by arrangement through the New Philadelphia Customer Services Department See Appendix B Exploded Views of Fans XII Bearings The V belt driven fan shafts for V belt drive units are supported by either fl
28. d line at the desired tip angle b Position the rotation line of the blade template over the rotation line marked on the fan housing c Align the leading edge of the blade with the chord line If the blade is at the proper angle the trailing edge should also align with the chord line d If the trailing edge does not align with the chord line loosen the blade in accordance with the blade adjustment Instructions Turn the blade until properly aligned with the chord angle and re tighten the blade e Repeat steps c and d for all blades 18 Procedure to verify set blade torques Blade nut torque for Series 1000 2000 3000 fans and blade attaching bolt for Adjustax S fans should be checked or set using the values in the following tables Torque values must always be verified in the tightening direction CAUTION Do not exceed maximum setting given on caution emblem which is affixed to the rotor hub Table 9 Series 1000 2000 3000 fans blade nut torque and caution Emblem for Aluminum and Steel Rotors Blade Nut Caution Torque Emblem 130 Ft Lbs 1393199 250 Ft Lbs 1390457 17 1 2 Aluminum 130 Ft Lbs 1393199 17 12 Steel 250 Ft Lbs 1390457 21 Aluminum 220 Ft Lbs 1393200 26 1 2 Aluminum 220 Ft Lbs 1393200 400 Ft Lbs 1390458 26 1 2 Steel 450 Ft Lbs 1391991 450 Ft Lbs 1385149 450 Ft Lbs 1393405 Rotor Type 14 Aluminum 14 Steel 30 Aluminum 30 Steel 3
29. del Give Fan Serial Number ITEM NUMBERS CASING ASSEMBLY FAN SUPPORT SUPPORT BRACE SUPPORT HARDWARE ELECTRIC MOTOR MOTOR MOUNTING PLATE ROTOR ASSEMBLY ROTOR NUT AND LOCKWASHER INLET BELL INLET BELL MTG HARDWARE ALUMINUM NOSE NOSE MTG HARDWARE INLET SCREEN GUARD SCREEN GUARD CLIP SHAFT BEARING BEARING FAN SHEAVE MOTOR SHEAVE V BELTS BELT GUARD BEARING GREASE LEADS END CAP FRONT END REAR NOT SHOWN ACTUATOR LINKAGE ACTUATOR LEVER BAR LEVER ARM ADJ MECHANISM ADJ MECHANISM GREASE LEADS HUB INSERT INSERT LOCK RING HEX SOCKET HEADLESS SET SCREW D 4 adjustable pitch fan ITEM NUMBERS CASING ASSEMBLY FAN SUPPORT SUPPORT BRACE SUPPORT MTG HARDWARE ELECTRIC MOTOR MOTOR MOUNTING HARDWARE ROTOR ASSEMBLY ROTOR NUT AND LOCKWASHER INLET BELL INLET BELL MTG HARDWARE ALUMINUM NOSE NOSE MOUNTING HARDWARE INLET SCREEN GUARD SCREEN GUARD CLIP CONDUIT BOX KIT PARTS MAIN CONDUIT PIPE MOTOR GREASE LEADS HUB INSERT INSERT LOCK RING HEX SOCKET HEADLESS SET SCREW Ordering Repair Parts e Give Fan Model Give Fan Serial Number ITEM NUMBERS CASING ASSEMBLY FAN SUPPORT SUPPORT BRACE SUPPORT MTG HARDWARE ELECTRIC MOTOR MOTOR MOUNTING HARDWARE ROTOR ASSEMBLY ROTOR NUT AND LOCKWASHER ADJ MECHANISM ACTUATOR LINKAGE ACTUATOR LEVER BAR LEVER ARM NOSE NOSE MTG HARDWARE INLET BELL INLET BELL MTG
30. determine the proper time for lubrication Grease all fittings with lubricant as specified within the following paragraphs Use a hand operated grease gun only DO NOT OVERGREASE AS THIS CAN BE AS HARMFUL AS TOO LITTLE GREASE Lubrication of anti friction bearings should be done as a part of a planned maintenance schedule The Recommended Lubrication Interval should be used as a guide to establish this schedule Cleanliness is important in lubrication Any grease used to lubricate anti friction bearings should be fresh and free from contamination Similarly care should be taken to properly clean the grease inlet area of the motor to prevent grease contamination Motor bearings Motor bearings must be lubricated to the manufacturer s recommendations Do not over lubricate Motors are shipped with tags attached that provide the manufacturer s recommendations If these tags are missing follow the typical motor lubrication schedule below The fan motor anti friction bearings may be lubricated with the motor running or stationary Stationary with the motor warm is preferred Table 4 Recommended motor lubrication by volume Using a hand operated grease gun only pump in the following recommended grease volume VOLUME IN CUBIC INCHES FRAME SIZE 1800 RPM and slower 3600 RPM 182 thru 215 254 thru 286 324 thru 365 404 thru 449 5000 Table 5 Motor lubrication frequency HORSEPOWER STANDARD SEVERE CONDITIONS CON
31. djustment turn rotor by hand to make sure blades are not striking the casing or motor support To adjust blades the following procedure should be used a Remove spun aluminum nose piece b Loosen blade locknut c Set blade at the new position by use of the markings at the blade root d Tighten the locknut while holding blade to make sure the position does not change For blade nut torque values see Appendix A e After changing all blades check all blade positions to make sure they are all identical f Replace nose piece securely Figure 8 Axivane blade setting scale When securing the position of blades the lock nut should not be tightened more than necessary to hold blades at the proper angle Maximum blade position allowed and torque value for locknut is specified on a caution emblem attached to rotor hub Due to the fact that only one half hour to one hour of labor is required to change blade angle setting of any adjustable pitch fan it is the responsibility of the customer to adjust or change blade angles on an adjustable pitch fan The motor nameplate current is not to be exceeded when the ventilated system is operated at its highest possible pressure Procedure to verify set blade tip angle and torque see Appendix A Controllable pitch fan blade adjustment Externally actuated controllable pitch fans have blade positioning actuators on the outside of fan casing Actuators may be pneumatic
32. e installation and start up of the equipment Service personnel are available by arrangement through New Philadelphia Division Field Service Department Fan description The New Philadelphia Division Series 1000 2000 3000 Axivane and Adjustax S fans are constructed with cast aluminum blades and hubs The blades and hubs are cast in permanent molas for true blade alignment and accurate aerodynamic blade cross sections of all rotor assemblies These vaneaxial fans are equipped with adjustable pitch blades that allow blade position to be custom set for maximum operating efficiency Type B vaneaxial and tubeaxial fans are equipped with permanently set blade angles The rotors are constructed of either formed blades welded to a steel hub or a one piece cast aluminum design Adjustax MPT tubeaxial style fans incorporate rotors with die cast airfoil aluminum blades which are clamped in split hubs The vaneaxial design incorporates stationary guide vanes located directly behind the fan rotor that straighten the air flow as it leaves the fan Fig 1 The tubeaxial design gives a rotating action to the air flow leaving the fan At low pressure the air flow straightens out a short distance from the fan Fan casings are of fabricated steel construction with either welded or rolled flanges The casings are given one coat of orange paint prior to shipment Special finishes and coatings are available at additional charge All rotor assemblies are ba
33. each bearing by hand to help dislodge any dirt particles 2 Remove all old grease and oil from bearing pillow block The solvent or kerosene can be used to clean the housing Carefully wipe all parts dry with a clean cloth to prevent dilution of the new lubricant by solvent 3 When bearing grease is badly oxidized soak in light oil SAE 10 or less motor oil at 200 240 before cleaning as discussed in the prior steps Spin the clean bearing in light oil to remove any solvent 4 Reassemble and add lubricant to the proper level 5 To clean bearings without removing them from the pillow blocks flush 180 200 F light oil kerosene or solvent through pillow block while rotating the shaft slowly Remove badly oxidized grease by flushing with hot aqueous emulsions Drain the solution flush the pillow block with hot light oil and re drain before adding new lubricant XIV Lubrication Good preventive maintenance requires proper lubrication practices Use only the recommended lubricants specified and follow the lubrication schedules listed All bearing cavities and grease leads have been properly loaded prior to shipment Fans which are to be installed promptly upon delivery require no additional lubrication NOTE If a lubrication instruction plate is mounted on the outside of the fan near one of the grease fittings follow the instructions on that plate in lieu of those printed below Refer to the lubrication schedule to
34. eck all connection joints for proper alignment to ensure that there is no twisting or distortion of fan housing b For direct drive foot mounted motor arrangement remove rotor and re shim motor to align shaft on fan housing centerline uniform clearance should be obtained between tips of blades and inside diameter of housing c For V belt mounted motor arrangement remove rotor and re shim bearing pillow blocks uniform clearance should be obtained between tips of blades and inside diameter of housing 5 Check electrical wiring to motor on motor name plate 6 Make sure access doors and weather covers are tight and sealed The maximum torque that can safely be applied to weld studs is shown in Table 1 7 On adjustable pitch fans check all blades for proper settings 8 Duct connections if required from fan to ductwork must not be distorted Ducts should never be supported by the fan Expansion joints between duct connections should be used where expansion is likely to occur or when fan is mounted on vibration isolators All duct points should be sealed to prevent air leaks Remove all debris from ductwork and fan 9 Flex connections should be installed in a manner that will not obstruct air flow during operation Table 1 Maximum torque on access doors m ae ea Seege jaja Based on well lubricated steel bolts VIII Initial startup procedure and balance After performing
35. g Severe impacts could distort the casing or damage the bearings Storage If not installed in place immediately this fan should be protected to remain dry at all times Coat all external machined surfaces with a material to prevent corrosion Cover and seal bearings to prevent entrance of contaminants Do not allow any material of any kind to be stored on or in the fan 1 The fan should be stored indoors in area which is clean dry and where control over temperature rapid or extreme changes in humidity shock and vibration are reasonably maintained as below 2 For extended storage and negotiated extended warranty the following instructions must be followed a The storage area is to be free from any shock or vibration of 2 mils maximum at 60 Hertz to prevent motor bearings from brinelling Exceeding these limits will require vibration dampening material under units b Storage area temperatures should not be below 50 F or over 120 F and relative humidity should be a maximum of 60 All units equipped with space heaters are to have the heaters connected if storage conditions exceed these environmental limits c When the fan is in storage longer than three 3 months fan rotors are to be rotated manually several revolutions at least once every three 3 months Rotors are to be marked so that a different blade is in the vertical position after each rotation If the fan is a controllable pitch unit the controllable
36. ilable as well as Class H insulation for high temperature air temperature above 110 and below 150 degrees Fahrenheit Fan service The New Philadelphia Division maintains a staff of field Service personnel for inspecting adjusting supervising or installing replacement parts on existing units Their expert knowledge may be of great assistance in getting your fan unit back in service with a minimum of delay Warning Warranty notice Failure to follow these instructions may void the warranty Read and follow these instructions when transporting handling storing installing and maintaining this fan II Receiving Handling Storage Receiving and Unloading Upon unloading this equipment inspect it for damage If damage has occurred file a claim immediately against the carrier Shortages should be reported to the Customer Services Department in New Philadelphia Ohio within fifteen 15 days from receipt of shipment at destination Handling We recommend the use of a sling around the fan casing for lifting the fan unit When handled with a single hoist use a spreader bar to keep the sling from sliding on the housing If chain or wire slings are used they should be well padded where they contact the fan especially where special coatings and paints are involved as they are easily damaged Always touch up scratches before installation Large units may have lifting lugs or holes which should be used instead of a slin
37. ing and fusing in accordance with the National Electrical Code and local requirements Be sure wiring and power supply voltage frequency and current are suitable for motor requirements listed on motor nameplate Installation suggestions for V Belts CAUTION Over tightening belts will cause damage to belts and bearings 1 Be sure that shafts are parallel and sheaves are in proper alignment Belts should be at right angles to shafts Use a straight edge or taut cord placed across faces of sheaves to aid in alignment 2 Do not drive sheaves on or off shafts Be sure shaft and keyway are smooth and that bore and key are of correct size Remove burrs if necessary by dressing with finishing file Wipe shaft key and bore with oil Tighten all screws carefully Recheck and re tighten after eight hours of operation 3 Belts should never be forced over sheaves more belts are broken from this improper method of installation than actually fail under normal operating conditions V Installation 4 Belt tension should be reasonable When in operation the tight side of belt should be in a straight line from sheave to sheave and with a slight bow on the slack side Check belt tension after eight hours of operation All drives should be inspected periodically to be sure belts are under proper tension and are not slipping 5 Do not install new sets of belts in drives where sheaves have worn grooves To eliminate premature belt failu
38. lanced before being mounted in the fans Before shipment fans are operated and balanced within factory recommended specifications Final balance vibration levels are recorded for future reference Figure 1 Air flow characteristics of tubeaxial and vaneaxial fans Fan accessories All fans are equipped with intake and discharge flanges to provide for duct connection Inlet bells available as an accessory are recommended improving inlet air flow from a plenum Inlet bell screens and fan supports are available as standard accessories at extra cost Inlet bells are fabricated of steel aluminum or fiberglass Screen guards are made of crimped aluminum wire and fan supports are made of formed steel plate Fan supports when purchased with the fan are always bolted to the fan prior to shipment Fan parts All required parts shown in this manual are described in Appendix B Exploded views of fans When ordering repair fan parts give fan model number and serial number obtained from name plate on fan casing along with the complete description of required part Fan motors Standard motors on direct connected fans are totally enclosed foot mounted or flange mounted Motors are VANEAXZIAL furnished with standard voltages of 230 460 volts or 200 volts for operation on three phase sixty cycle AC power Special voltages or cycles can be furnished on request Underwriters Approved Class I Group D enclosures are ava
39. mage to the bearing soupiness visible from the grease relief area seals Rotate rotor slowly while lubricating RECOMMENDED LUBRICANT FOR CONTROLLABLE PITCH Table 8 Recommended lubrication amounts and intervals MECHANISMS CHEVRON SRI NO 2 for controllable pitch mechanisms BALL BEARING LUBRICATION AMOUNT LUBRICATION INTERVAL CONTROL MECHANISMS STANDARD SEVERE STANDARD SEVERE MECHANISM PART NUMBERS CONDITIONS CONDITIONS CONDITIONS CONDITIONS P N 500988 213 through 500988 220 6 months 3 months for 17 1 2 Dia Hubs P N 500988 202 through 500988 209 6 months 3 months for 21 Dia Hubs P N 500988 221through 500988 232 500988 257 amp 500988 264 6 months 3 months for 26 1 2 Dia Hubs P N 500988 211 500988 212 500988 262 amp 500988 263 6 months 3 months for 30 Dia Hubs STANDARD CONDITIONS Eight hours per day normal or light loading clean 40 C 100 F maximum ambient SEVERE CONDITIONS Twenty four hours per day operation or shock loading vibration or in dirt or dust 40 50 C 100 120 F ambient Lubrication of Blade Bearing manufactured prior to 1979 may have roller thrust bearings BLADE BEARINGS All controllable pitch fan blades have some type of thrust bearing and bushing to maintain blade Teflon type bearings using a bearing retrofit kit These kits radial position The type of blade bearing depends upon are available through our Customer Services Dept at New the
40. moving screws To maintain fan balance of units with spinners match mark spinner to housing before removing Remove cotter pin or lockwire where applicable b Remove rotor held by a castle nut or hex slotted nut by removing cotter pin and nut carefully remove rotor from shaft taking extra care not to lose the key or backup washer c Remove rotor from QD hubs by removing the three hex head draw up bolts which hold rotor to hub oil these bolts if dry and insert into tapped holes in the rotor hub alternately and evenly tighten bolts one half turn until taper fit is broken if difficult to break taper fit carefully tap hub lightly with mallet and remove rotor from hub d Remove rotor held by retaining plate and locking bolt by removing locking bolt and hex bolt from motor shaft remove retaining plate carefully remove rotor from shaft taking extra care not to lose loose parts e Remove rotor held by lock nut and lock washer by bending tab of lock washer back to clear slot in lock nut remove nut and lock washer carefully remove rotor from shaft taking extra care not to lose loose parts f If binding occurs penetrating oil may free it g When hub is supplied with drilled and tapped holes a rotor puller facing against the motor shaft can be used to aid in removing the rotor h If blades are worn or broken the entire rotor assembly should be replaced to ensure a properly balanced fan i Inspect all parts and replace an
41. n on arrangements with exposed fans Always use lockout and tagout procedures before performing fan adjustments maintenance service or inspection Fan mounted with duct ahead of the fan No inlet bell is required Fan supports bearing the weight of the complete fan can be mounted horizontally on the floor or hung from the ceiling Special supports for vertical mounting are required for the larger fan sizes NOTICE When connecting fan to duct work care should be taken to avoid twisting or deforming the housing as this may cause the blades to strike the fan casing and or cause vibration and noise problems When duct work is mounted ahead of the fan 90 elbows directly ahead should be avoided If an elbow must be used turning vanes should be installed to minimize turbulence to the air entering the fan Fan installed to draw air from a plenum An inlet bell is recommended for maximum efficiency and lower noise levels Specially designed inlet bells and screens are available to fit each fan model There should be a distance of at least two fan diameters from the face of the inlet bell to an obstruction such as a wall or building The minimum free distance from the inlet bell to either side and roof should be one fan diameter Should it be impossible to conform to these recommendations contact New Philadelphia Division Customer Service Department for assistance in resolving your installation problems Vibration and sound isolation
42. ngs for excessive temperature or chatter High speed fan bearings are designed to run hot 165 degrees Do not replace a bearing simply because it feels hot Check pillow block temperature with a pyrometer or contact thermometer 10 Motor a Blow out open motor windings with low pressure air to remove dust or dirt which cause excessive insulation temperatures Air pressures above 50 psi can cause motor damage b Keep motor dry When motor is idle for a long time single phase heating or a small space heater may be necessary to prevent water condensation in the windings c Lubricate motor bearings per Table 6 Typical bearing lubrication schedule d Be sure motor is not overloaded Check the amperage drawn against the motor nameplate rating Fan Balancing The fan rotors on axial fans are balanced by the factory Most fans shipped completely assembled have had a running test to check balance If the rotors have not been severely handled or damaged no additional balancing should be required A fan handling clean air should not need balancing once it is balanced Dust build up on fan blades or blade wear unbalances a fan Inspect the fan periodically to determine the amount of dust build up or wear Before balancing a rotor for any reason check the Troubleshooting section Portable instruments are available that indicate vibration displacement in mils 1 mil 0 001 inches If you have vibration instrumentation use Table
43. ntil allen wrench twists 4 To disassemble reverse this procedure Be sure to remove burrs on shaft caused by setscrews before removing pillow block from shaft A honing stone will remove burr Figure 13 Locking collar installation Ball Bearing Pillow Block These fixed and floating type ball bearing pillow blocks are shipped with bearings mounted in the housings but with locking collars separate The bearings are not pre lubricated Refer to Figure 14 1 Remove end cover 2 gasket 10 plates 11 with packing 7 Be careful not to damage gasket and packings 2 Slide pillow block housing 1 bearing 3 and plate 11 onto shaft Position bearing on shaft making sure that the cam end of inner ring 5 points out 3 To position the floating bearing in its housing measure collar projection A on the fixed unit and duplicate it on the floating unit Since A is the same on both pillow blocks the floating bearing will automatically be positioned in the center of the floating space 4 Bolt pillow blocks securely in position on their mounting surfaces after shimming and aligning The outside diameter Figure 14 Pillow block ball bearing of shaft and housing should clear equally all around Pillow blocks must be mounted so fan rotor and shaft do not strike any part of fan housing 5 Slide locking collar 4 into position against bearing inner ring 5 Turn collar in direction of shaft rotation until it
44. pitch mechanism should be actuated full stroke at the same time A small amount of grease approximately one 1 cubic inch is to be added at the grease fittings every six 6 months This is to ensure the bearings are always coated with lubricant For grease type see Section XIV Lubrication d All moisture drains are to be fully operable while in storage and or the drain plugs removed from the motor Fig 2 The fan must be stored so that the drain is at the lowest point All breathers and automatic T drains must Figure 2 Location of moisture drains be operable to allow breathing e Motor windings are to be meggered at the time of storage and also at the time of storage removal with the values recorded Any drop in resistance value greater than 50 will necessitate electrical or mechanical drying of motor Further motor bearings should be checked for moisture lf moisture is present replace bearings and re lubricate units NOTE Industry standards dictate that a motor should megger at least one 1 megohm plus KV rating of motor as new Therefore megger reading after storage should not be less than one 1 megohm 3 Upon removal from storage fan motor bearings are to be re greased Ill Fan application recommendations WARNING Contact with rotating fan blades can cause severe injury or death Never insert items into the fan to determine movement or direction of rotation Install fan guards or scree
45. place armature Loose hold down bolts Tighten Motor laboring Low or high voltage Check supply voltage Clean dirt from windings per XIII Armature rubs Worn bearings Replace bearings against stator Commutator brushes on d c motor worn or Clean or replace bushes Power to motor but not seated under proper tension motor doesn t run Too much or not enough lubrication in Clean and regrease bearings Low insulation resistance Check resistance with megohm meter 33 Q q 0 E ke 9 0 LL 5 gt lt lt ke 9 9 5 O Recommended Not Recommended Not Recommended 34 2029 W DeKalb Street Camden SC 29020 Sales 1 800 327 8885 Emergency Service 1 800 458 FANS www howdenbuffalo com
46. re replace worn sheaves with new sheaves 6 Do not use belt dressing but keep belts clean at all times 7 When replacing belts on a drive be sure to replace the entire set with a new set of matched belts 8 Store V belts in cool dark dry place If Browning Belt Tension Checker is used consult Browning deflection tables for proper deflection force for specific type and size of belt sheave pitch diameter and belt span Tension new drives at the maximum dellection force recommended Check tension at least two times during first day s operation as there normally will be a rapid decrease in belt tension until belts have run in Check tension periodically after the first days operation and keep tension in recommended area The correct operating tension for a V belt drive is the lowest tension at which the belts will not slip under peak load condition VI Blade angle settings Notice De energize the fan before performing adjustments service inspections or lubrication Use lockout and tagout procedures prior to conducting adjustments maintenance service or lubrication On all fans except Controllable Pitch fans the blade angles have been set at the factory for the duty required Rough handling during shipment can affect these settings Check settings of all blades before start up Adjustax S blade angle setting The adjustment for Adjustax S fans is simple because blades can be moved by hand when fan is at
47. rest During operation centrifugal force on the patented O ring construction prevents blades from moving Check by comparing the setting on the Vernier scale Fig 6 with the rating specified on the order To change settings lock power OFF and adjust by hand from fan inlet For ducted fan inlets blades are adjustable from blade access door using a tool that grips blade tip Fig 7 and a drive ratchet Door handle is used as blade adjusting tool Do not open access door when fan is running CAUTION Never set blades at a value higher than the Maximum Blade Setting NOTE After adjustment it is not necessary to re torque the blade attaching bolts For Adjustax fans that do not use O ring construction loosen the two socket cap screws to adjust blade setting Be sure the cap screws are dirt free before re tightening Figure 6 Adjustax S blade setting vernier Figure 7 Adjustment of ducted inlet fans Series 1000 2000 3000 blade angle setting For Series 2000 3000 fans the blade index range is numbered from 0 6 Series 1000 fans blade index range is 0 16 The number 0 is the highest angle of attack in both fan series and requires the greatest horsepower As index setting number is moved toward 6 or 16 the flow pressure and horsepower are reduced If it is necessary to readjust blades be sure each blade is set at the same index number and always check the motor amperage to prevent motor overload Also after each a
48. sulting from contaminated grease Re lubrication purges the bearing of solid or liquid contaminants How often to re lubricate can be determined only from operating conditions Bearings for fans handling clean air at normal room temperature needs less frequent lubrication than do those moving dirty air at elevated temperatures Determine the proper re lubrication interval for your unit by setting up a trial schedule and visually examining the purged lubricant If the lubricant is clean lengthen the period between lubrications if it is contaminated shorten the interval To aid in setting up the initial period use either table 6 or table 7 to obtain greasing intervals for various operating conditions These are only typical You must establish the proper interval for your unit Table 6 Typical bearing lubrication schedule Operation Condition Dirt Moisture Bearing Operating Temperature 32 F to 120 F 120 F to 160 160 F to 200 32 F to 160 F 160 F to 200 Greasing Intervals 6 to 12 months 1 12 months 1 to 4 weeks 1 to 4 weeks 1 week 32 F to 200 1 week Fairly clean Moderate to None extremely dirty Fairly clean Heavy moisture amp direct water splash Table 7 Schedule for Series 1000 2000 3000 belt driven pillow block type bearings SIZE OF FRAME SIZE OF DRIVING MOTOR LUBRICATION CYCLE MONTHS GREASE OPERATING SPEED RPM VOLUME 1000 1500 2000 2500 3000 3500 CU IN FAN HUB
49. the fan and drive equipment This weight acts as an inertia block to stabilize the foundation The foundation should be flared or the footing increased in size to resist settling The top of the foundation should extend at least 6 Inches outside the outline of the fan base and should be beveled on the edges to prevent chipping All foundations should be poured as a single unit Figure 3 shows a typical floor mounted installation Figure 3 Typical floor mounted installation Figure 4 Ceiling suspended installation Anchor bolts can be either L or T shaped They should be placed in pipe or sheet metal sleeves approximately two inches larger in diameter than the anchor bolts to allow for adjustment in bolt location after concrete has set In estimating the length of bolts allow for the thickness of nuts and washers thickness of fan base and extra threads for draw downs and shims Seating area for washers and nuts must be clean and thread area must be clean and lubricated Steel foundation A structural steel foundation must be sufficiently rigid to assure permanent fan alignment The foundation must be designed to carry the equipment weight plus the centrifugal loads imposed by operation with minimum deflection The entire structure must be constructed in a permanent manner such as welding or riveting If bolting is used a proper torque must be applied along with a locking nut or tack weld to prevent bolts from loosening
50. the pre startup checklist read all fan nameplates for special instructions and follow this procedure 1 Bump the motor to check for proper rotor rotation Start motor in accordance with manufacturer s recommendations Arrows on fan nameplate indicate proper direction of rotation and air flow 2 Bring fan up to speed If fan does not come to speed promptly trip from line and investigate cause As soon as fan is up to speed check motor amperage on each phase for balance and correct motor load The full load amps stamped on fan nameplate and must not be exceeded Watch for unusual vibration and overheating of bearings and motors Multi speed motors should be started at lowest speed and then run at high speed operation Check fan speed on V belt driven units and adjust motor sheave to give desired RPM 3 At first indication of trouble or unusual vibration shut down the fan and check for the problem using Appendix Troubleshooting as a guide 4 If any symptoms of air starvation stall occur a separate make up system should be installed Air starvation stall causes an unusual low rumbling vibration sound 5 After a running period usually about eight hours recheck all alignments and inspect the bearings Check that all bolts and set screws are tight For V belt fans readjust the V belt as necessary 6 Balance This unit was operated and dynamically balanced within factory recommended specific
51. the rear pillow block to its mounting angle or plate 4 Rotate the shaft a few times by hand push the rotor shaft forward opposite air flow Then position the bearing locking collar in the center of the float the axial movement of the rear bearing Tighten the bearing collar set screws in to the shaft slot using the Allen wrench supplied until the wrench distorts 5 The purpose of the above procedure is to place the fan thrust load on the front bearing and the radial load or belt pull on the rear bearing 6 Grease leads must be connected and new bearings lubricated XIII Maintenance To ensure trouble free operation and long life a regular schedule of preventive maintenance and lubrication must be followed Frequency of inspection and lubrication depends upon your operating conditions and how much the fan is used Weekly inspections are recommended when the fan is first installed to determine how frequently inspections should be made Do not make any repairs during the warranty period without prior approval or the warranty is void Notice De energize the fan before performing adjustments service inspections or lubrication Use lockout and tagout procedures prior to conducting adjustments maintenance service or lubrication 13 Preventive maintenance Periodic inspections should include the following 1 Air flow Check for obstructions dirt rags etc in inlet or outlet ductwork 2 Screens VIVs
52. y which are excessively worn 3 To remove bearings V belt drives a Remove drive sheaves and belts b Remove inner cylinder cover plates c Remove fan sheave d Remove grease fittings and grease lines e Remove bearings following the procedure in the V belt bearing section for the particular bearing furnished for your unit WARNING If removal of motor is necessary proper rigging and safety practices must be used to avoid personal injury and damage to equipment If assistance is desired contact the New Philadelphia Division to arrange for a field service representative to supervise removal of motor X Reassembling fixed pitch and single blade adjustable pitch fans See Appendix B Exploded Views of Fans To reassemble fans reverse the order of the dismantling steps and perform the additional procedures that follow 1 When remounting direct drive motor or V belt fan shatt be sure shaft is properly positioned on fan casing center line providing equal clearance between tips of blades and inside of housing lt may be necessary to shim motor or fan shaft bearings to obtain equal clearance 2 Clean motor shaft QD hub where applicable bore of rotor cap screws and holes for cap screws 3 Remount rotor shaft a If rotor is attached with castle nut or slotted nut install backup washer insert key apply anti seize compound on shaft install face washer castle nut or hex slotted nut an

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