Spencer® Multi-Stage Centrifugal Blowers Handling, Installing and
Contents
1. 13 VIII Trouble Shooting Guide Trouble Insufficient air or gas through system Machine noisy 14 Probable Cause Corrective Action Low pressure or vacuum as determined by measurement with a manometer Incorrect rotation Customer has reassembled machine incorrectly Machine sized for requirements given but air or gas lines too small causing excessive frictional loss Valves in line causing excessive losses Inlet or outlet partially blocked i e clogged inlet filter blast gate shaft slipped in handle and shutter does not open fully High inlet temperature i e higher than designed inlet temperature Lower inlet pressure i e lower than designed inlet pressure Machine not running at designed speed Lower than design gas density or specific gravity Machine air passages clogged with material Impellers worn out due to explosion abrasion or vibration Inlet spiral has rotated partially blocking inlet 4 bearing outboard machines only Machine design capacity too small for the system System requirements incorrectly calculated by customer Too many leaks and or openings Measuring gas or air flow incorrectly Flowmeters incorrectly calibrated No means of measurement available so customer is guessing at airflow Change motor leads to correct rotation Refer to instructions in this book and to assembly print disassemble m2. 9 On other than keyed construction measure distance from impeller hub to any step or shoulder on shaft and mark for reassembly On stacked and keyed construction remove nuts and washers 24A and shaft sleeves 24B Remove impeller 29 and its hub spacer number or mark them for replacement in their proper position See note B following paragraphs 12 10 Check axial position of each deflector at 4 radial points with reference to end of casing and record 11 Remove spacer 27 holding rope packing in place Number or mark for replacement 12 Remove rope packing holding deflector in place Then pull or work deflector 11 out of casing Number or mark for replacement 13 Proceed to remove the remaining stages in the same way numbering or marking all impellers spacers deflectors etc to insure proper replacement 14 Check deflector stops for damage 15 Reassemble in reverse order replacing end head gasket 22 and any worn packing 32 10 25 20 To Change the Inboard Bearing Motor End of the Machine 1 Remove snap ring and back off coupling sleeve 2 Check gap on coupling hubs 3 Loosen and remove motor bolts and slide motor back 4 Remove coupling hub from machine shaft 5 Remove packing plate nuts from packing plate 32 and 20 on each end of machine Slide both the packing plates and packing 32 and 20 on the shaft away from the heads Remove all packing from packing box where applicable 6 Rem
3. reassembly 6 Proceed to remove remaining stages in the same way marking each component to insure proper reassembly Note Division Head 4 cannot be removed 7 Rotate the Blower shaft 13 so that the keyway is in the 12 o clock position Mark the motor shaft and coupling hub to show the corresponding 12 o clock position Remove snap ring on blower side of coupling 1 and slide coupling sleeve back 8 Remove motor mounting bolts and slide motor 23 back Identify and secure individual motor shim packs under each motor foot for reassembly 9 Unbolt division head packing plate 6A and slide packing plate and packing 6 back on the shaft 10 Mark the Blower end and coupling ends of the bracket 7 for reference Remove bearing bracket hold down bolts and slide bracket shaft assembly out of the casing 11 Using heat and a puller remove the coupling hub from the shaft 12 Unbolt the bearing caps and remove These caps are NOT identical so label the coupling end and blower end caps clearly Remove the bearings 5 amp 5A from the shaft Remove the shaft from the bracket 10 Reassembly 1 Assemble the shaft 13 in the bracket with new bearings 5 amp 5A and grease Assemble the caps being careful to insure the correct cap on each end 2 Using heat assemble the coupling hub on the shaft 13 3 Place the division head packing plate 6A and packing 6 on the shaft If for any reason the packing 6 is damaged r
4. Motor Bearing 14 Inter stage Deflector Packing 22 Motor 14A Center Deflector Plates Normally not 23 Opposite Drive End Motor furnished on 30 or smaller machines Bearing 15 Spacers 16 End Head Gasket Not available as a separate item 17 Feet 11 Vil Four Bearing Outboard Machine Instructions for Disassembly and Reassembly Warning Be sure all electrical power is disconnected prior to performing Blower maintenance Caution Parts must be reassembled in exactly the same relative positions Therefore it is recommended that each part be marked as it is removed from the machine to facili tate later reassembly It is especially important that the location of each impeller as well as its position on the shaft be marked When ordering replacement impellers and deflectors refer to Notes on accompanying illustrations General Configuration In four bearing units of the outboard type the impellers are mounted between two supporting bearings of the Blower The equipment is driven by means of a flexible coupling and although most standard makes of couplings can be used a gear type is normally furnished unless otherwise specified Standard sleeve bearing or ball bearing motors with standard shaft dimensions are included and the entire assembly is typi cally mounted as shown Caution Most four bearing outboard machines have a duplex tandem bearing assembly These bearings are available only from Spencer as a cu
5. Remove spacer 14A holding rope packing 4 in place Mark spacer for reference during reassembly 5 Remove rope packing 4 holding deflector in place Remove deflector 7A Mark for reference during reassembly 6 Proceed to remove remaining stages in the same way mark ing each component to insure proper reassembly Note Division Head 3 cannot be removed 7 Unbolt division head packing plate 2A and slide packing plate and packing 2 back on the shaft 8 Remove motor mounting bolts and slide motor 1 back Reassembly 1 Place the division head packing plate 2A and packing 2 on the shaft If for any reason the packing 2 is damaged replace it Install the motor 1 in the casing in its original position Be sure that the shaft is centered in the casing Assemble the packing 2 and packing plate 2A to the division head 2 Run the motor 1 to check for vibration If excessive vibra tion is present check the shaft for runout 3 Place the first impeller 8C on the shaft up against the division head 3 Mark the shaft approximately 1 8 out and withdraw the impeller to this point This will insure a clear ance of 1 8 behind the impeller Tighten the hub securely 4 Inspect the interstage packing 9 if applicable on deflector 7B and replace if damaged 5 Place deflector 7B back tightly against the stops in the casing Install the rope packing 4 firmly into the groove using a suitable tool 6
6. air than designed for Internal machine malfunction Impeller s hitting after customer reassembly and or Impeller s slipping shaft due to heat or excessive inlet pressure Impeller s coming apart due to age or wear from dirty air or gas Deflector coming apart due to age or wear from dirty air or gas Machine operating in surge or unbalanced flow range Keyed hubs rattle on start up Machine out of balance running rough Deflector packings rubbing on shaft or Impeller hub will seat themselves if new Motor not aligned in casing Standard Overhung causing Impeller to hit Four bearing machines coupling misaligned and or dry of grease Foreign material in machine Remove excess grease Check bearing temperature refer to lubrication instructions in this manual Grease according to instructions Replace bearing s Replace bearing s Tighten nut check for damage Replace housing and bearing Install bearings correctly according to instructions check bearing shaft and housing dimensions Replace bearing s Reduce thrust by lowering gas or air density installing smaller Impellers or installing machine designed to proper conditions Reassemble according to instructions tighten Impellers Bleed air at low flow to reduce heat Change inlet conditions if necessary Replace Impeller s Repair or replace deflector Increase air flow to stop surge condition Nor
7. being replaced or there is any vibration due to an unbalanced condition after assembly use the following procedure If there is any vibration or unbalance the coupling should be checked first for misalignment If realignment does not correct imbalance rotate coupling hubs or machine shaft and motor shaft in 90 increments until minimal vibration is obtained Typical Four Bearing Outboard Type 4BOB Deflector Stop rz LY Specify by letter also Discharge 4 Intake a gt eae lt a letter also Notes 1 Although eight impellers and seven deflectors are shown in this typical drawing the number in each machine will vary dependent on the specific machine s design criteria To deter mine the number of impellers and deflectors in a specific machine consult the factory Be sure to include machine serial number and appropriate impeller deflector letter designation O Screened items are recommended spare parts 1 Motor 2 Drive End Motor Bearing 3 Flexible Coupling 4 Coupling Guard 6 inboard Bearing Lubrication Fitting 7 Division Head 8 inboard Bearing Cap Front 8A inboard Bearing Cap Rear 9 Heat Fan Guard 10 Rope Packing for Deflectors 11 Deflectors A B C Etc 12 End Head Bolts 13 Intake Spiral 13A Grease Dr
8. e Mobile or stationary integrated vacuum units e Dust collectors and separators e Multi stage centrifugal blowers e Single stage centrifugal blowers e Regenerative blowers e Positive displacement blowers e Gas boosters e Custom engineered products with special materials for extreme temperatures and pressure Complementary accessories with single source convenience and compatibility e Standard and custom electrical control panels U L and C U L Listed available Comprehensive selection of tubing fittings vacuum hoses valves and tools e Valves gauges couplings shrink sleeves vibration isolators and other system components Comprehensive engineering and other customer support services e The industry s largest complement of technical specialists in air and gas moving technology e Worldwide parts and service organization e Application research and testing facility Worldwide organization of sales representatives and distributors offering e Product selection installation and operation assistance e Comprehensive system design services e Follow up services and troubleshooting For the name and telephone number of your local Spencer Representative call 1 800 232 4321 Since 1892 moving air and gas for a cleaner environment Turbine Company 600 Day Hill Road Windsor CT 06095 4706 TEL 800 232 4321 860 688 8361 FAX 860 688 0098 Form AA14 Copyright 1996 The Spencer Turbine Company 1296CF2 5
9. in detail the nature of the difficulty before attempting to disassemble the machine Typical Multi Stage Standard Overhung Type SOH Notes 1 Although three impellers and two deflectors are shown in this typical drawing the number in each machine will vary depen dent on the specific machine s design criteria To determine the number of impellers and deflectors in a specific machine con sult the factory Be sure to include machine serial number and appropriate impeller deflector letter designation C Screened items are recommended spare parts 1 Motor and Shaft Assembly 2 Division Head Packing 2A Division Head Packing Plate 3 Division Head Not available as separate item 4 Rope Packing for Deflector 5 End Head Bolts 6 End Head 7 Deflector A B Etc 8 Impellers A B Etc 9 Inter Stage Deflector Packing 9A Center Deflector Plates normally not furnished on 30 or smaller machines Felt on Multi stage Adjustable Discharge Type 2 When ordering replacement parts refer to Section III 10 Split Clamped Hub or Tapered Bushing Clamp Part of Impeller Assembly 12 End Head Gasket 13 Feet 14 Spacers 15 Drive End Motor Bearing 16 Casing 17 Motor Base 18 Motor Hold Down Bolts 19 Opposite Drive Motor Bearing VI Four Bearing Overhung Machine Instructions for Disassembly and Reassembly Warning Be sure all electrical power is d
10. or accident or misap plied or improperly installed This warranty will not apply to any product which has been disassembled repaired or otherwise altered by any persons not authorized by our Service Department The guarantee of the motor control and component manufac turers govern the extent of our guarantee on such equipment Warranty work on motors controls and components must be authorized by Spencer and must be performed in an authorized shop as designated by the motor control and component man ufacturers The Spencer Turbine Company reserves the right to invoice all expenses incurred when repairs are made in the field at the specific request of the customer Handling Caution Do not lift by the shaft end or bearing housing use lift rings or slots in base This machine has been carefully balanced and tested at our factory It is essential that it be handled with care during installa tion in order that you may be assured satisfactory performance Storage Caution If machine is to be stored for an extended period of time it must be carefully protected from dampness and dirt and the shaft should be rotated a few times by hand every week On Four Bearing Overhung and or Four Bearing Outboard type machines bearings must be replaced at customer expense if start up occurs one year beyond date of ship ment Failure to comply with any of the preceding will void war ranty Location Caution Do not locate unit or cont
11. results in over heating and consequent bearing failure The Blower bearings as lubricated at the factory carry an ade quate amount of proper grade of grease for 1500 to 8000 hours of continuous operation prior to lubrication depending upon atmospheric conditions and size An average lubrication interval therefore should be established based on existing conditions Several factors contribute to frequency of lubrication 1 Operating temperatures bearing 2 Indoor or outdoor operation 3 Dusty or clean atmosphere 4 Ambient temperature 5 Predicted duty cycle 6 Bearing size and speed Assuming an ideal 8000 hour lubrication interval reduce the time factor by applying the preceding conditions as follows Lubrication Interval Operating Condition Blower Bearings l 1 120 F to 155 F bearing temperature 2 Indoor installation 3 Clean atmosphere 4 40 F to 100 F ambient temperature 5 Continuous operation 4000 6000 average operating hours Il Same conditions as l above except Intermittent operation 6000 8000 average operating hours III 1 120 F to 155 F bearing temperature 2 Outdoor installation 3 All atmosphere conditions 4 0 F to 104 F ambient temperature 5 Continuous operation 3000 5000 average operating hours IV Same conditions as Ill above except Intermittent operation 5000 7000 average operating hours Note Higher limits apply to smaller bearings 308
12. Install the next impeller 8B on the shaft up against the deflector 7B Mark the shaft approximately 1 8 out and withdraw the impeller to this point Tighten the hub securely 7 Install the spacer 14B into the casing Make sure spacer and deflector 7B are pressed back tightly and at a uniform distance from the end of the casing at four points 8 Proceed in a like manner with remaining impellers spacers and deflectors 9 Reassemble the end head 6 to the casing using a new endhead gasket 12 Balancing Each machine is fully tested before leaving the Spencer factory to be sure vibrations if any are well within specifications for this particular machine However rough handling during shipment or improper disassembly reassembly of a machine can upset its balance and or result in excess vibration If there is any vibration due to an unbalanced condition after assembly use the following procedure After running at operating speed and when at rest mark posi tion of end impeller hub on shaft Loosen bolts or screws hold ing impeller on shaft Rotate impeller 90 on shaft Retighten bolts or screws Run machine again at operating speed and check vibration Repeat this process until the best position is located for the impeller on the shaft so that there is no vibration in the machine Note In the event of trouble notify The Spencer Turbine Company Windsor Connecticut or the nearest Spencer repre sentative describing
13. Mark the shaft approximately 1 8 out and withdraw the impeller to this point Tighten the hub securely 10 Install the spacer 15 into the casing Make sure spacer and deflector 9B are pressed back tightly and at a uniform distance from the end of the casing at four points 11 Proceed in a like manner with remaining impellers spacers and deflectors 12 Reassemble the end head 11 to the casing using a new end head gasket 16 Balancing Each machine is fully tested before leaving the Spencer factory to be sure vibrations if any are well within specifications for that particular machine However rough handling during ship ment or improper disassembly reassembly of a machine can upset its balance and or result in excess vibration If there is any excessive vibration due to an unbalanced condi tion after assembly use the following procedure 1 Check coupling for misalignment If realignment does not correct the vibration rotate coupling hubs or machine shaft and motor shaft 90 in continuous increments 2 If vibration persists shut the Blower down Mark the position of end impeller hub on the shaft Loosen bolts or screws securing the impeller Rotate impeller 90 on shaft Retighten impeller Run machine again at operating speed and check for vibration Repeat this process until the best position is located for impeller on shaft so that there is no vibration in the machine Note In case of trouble notify The Spenc
14. Spencere swan O M u Iti Stage Model No Centrifugal Blowers Handling Installing and Operating Instructions Standard Overhung Four Bearing Overhung Important Do not operate machine in unstable low flow range surge Read and become familiar with this manual prior to uncrating and installing your Spencer Blower equipment This preci sion equipment is capable of extended service and lifespan Realization of this potential can best be achieved through proper handling and adherence to the instructions detailed here Damage resulting from failure to follow correct proce dures will void warranty The Spencer Turbine Company Windsor Connecticut 06095 Form AA14 Contents Page General Instructions 000 e eee eee 2 Il Coupling Alignment 00 0 c eee eee 4 Ill How to Order Replacement Parts 5 IV Lubrication Instructions 2 0 ee eee 6 V Standard Overhung 0c eee eee eee 8 VI Four Bearing Overhung 000 eee eee 10 VII Four Bearing Outboard 00 12 VIIL Trouble Shooting Guide 00005 14 I General Instructions Illustrations contained here apply to three types of Spencer Blowers Use the illustrations or consult factory to determine which machine you have then read instructions paying particu lar attention to those which are unique to your machine When in doubt consult Spencer Important Read and become fa
15. achine and reassemble properly Increase line sizes or install machine providing higher output pressure Install larger valves or install machine providing higher output pressure Check blast gate remove and repair if necessary Direct inlet line to cooler area replace machine with one designed for correct temperature Remove inlet restrictions or install machine providing higher output pressure Refer to motor manufacturer s instructions check motor speed check voltage connections Check gas analysis increase density or install machine designed for correct requirements Disassemble clean and inspect all parts Replace Impellers Rotate spiral to correct position and pin or clamp in position Install larger volume or lower pressure machine to handle correct system requirements Locate and repair all leaks Calibrate flowmeters be certain proper orifice is used for meter check with flowmeter manufacturer Obtain and install flowmeter External machine malfunction bearing whining or growling Too much grease bearing hot Too little grease bearings dry Bearing s failure Bearing retainers worn Bearings turning on shaft retaining nut loose Bearing turning in housing housing worn Bearings replaced incorrectly particularly in tandem assembly i e angled cramped or put in backwards Bearing s overloaded too much thrust due to higher density gas or
16. ain 14 End Head Assembly Alternate internal construction of a four bearing outboard Blower with split clamped hubs 15 Outboard Bearing Nut and Washer 16 Outboard Bearing Lubrication Fitting 17 Outboard Bearing Cap 17A Outboard Bearing Housing 18 Thrust Washer where applicable 18A Outboard Bearing s 19 Outboard Bearing Bracket 19A Housing Locking Bolt and Nut 20 End Head Packing where applicable 20A End Head Packing Plate 21 Bracket Bolts 22 End Head Gasket 23 Casing 24 Shaft and Keys 24A Impeller Assembly Lock Nuts 2 and Washer 1 24B Shaft Sleeves Two one keyed Packing box used on Gas Boosters See Form DD Packing Cap and Follower Lantern 2 The impellers are equipped with keyed hubs as illustrated or split clamped hubs shown below 3 When ordering replacement parts refer to Section XIV 25 Inter Stage Deflector Packing 25A Center Deflector Plates 26 Half Deflector 27 Spacers 28 Feet 29 Impellers A B C Etc 31 Heat Fan 32 Division Head Packing 32A Division Head Packing Plate 33 Inboard Bearing Bracket 34 Inboard Bearing 35 Inboard Shaft Locking Nut and Washer 36 Common Base 37 Opposite Drive End Motor Bearing 38 39 Metallic Packing Not available as a separate item Packing box used where pressure exceeds 7 5 psi and for other special applications
17. and small er Lower limits apply to large bearings An extremely dirty atmosphere in addition to the above factors could decrease the lubrication period as much as 50 The above chart serves only as a guide To lubricate blower bearings proceed as follows 1 Shut down machine 2 Remove guards as necessary 3 Inject the recommended grease Chevron SRI No 2 using a grease gun The amount of grease will vary with bearing size 4 Reinstall guards and restart the Blower Caution Do not run Blower unless guards are properly installed Recommended Bearing Lubricant Type The bearings of Four Bearing Outboard and Four Bearing Overhung Turbo Blowers are packed at the factory with Chevron SRI Number 2 grease The general specifications are Grade or consistency 00 cece eee eee 2 TRICKCNGE p nsei Pee oe tape ee BE eee wee polyurea ASTM Dropping Point 0 00 cee eee eee 480 F Work Penetration 0 0 0 e eee tee 270 Base Oil Viscosity 000 600 SUS 100 F GOIO oi ais Sots de Galatea diem ee ace E eN RE Blue Green Chevron SRI Number 2 is available from Spencer Note The intermixing of incompatible greases will result in loss of lubrication and bearing failure which is NOT cov ered under the Spencer warranty Lubrication of Replacement Bearings Four bearing designs only When installing new bearings it is necessary to repack bearings with grease Do this by forcing grease in
18. chine shop quality straight edge across the coupling hubs at the root diameter of the gear teeth 3 Adjust the motor so the straight edge is evenly supported between the coupling hubs at the 3 6 9 and 12 o clock positions 4 Using a feeler gauge measure the clearance between the coupling hubs at the 3 6 9 and 12 o clock positions 5 Adjust the motor so that the gap is identical at the 3 6 9 and 12 o clock positions and in accordance with the dimension C Caution Be sure to relubricate coupling after alignment and before operation Coupling Alignment with Sleeve Bearing Motors Caution Where sleeve bearing motors are used it is nec essary to complete the following procedures before cou pling alignment is attempted Unless otherwise specified by the customer a flange type gear coupling should be used for both 1800 and 3600 RPM applica tions Do not use a sleeve type coupling Sleeve bearing motors have a specified end play End play lim its and the magnetic center where motor will run should be scribed on the shaft by the manufacturer When aligning a sleeve bearing motor with a machine use the following procedure 1 The motor shaft must be level 2 Position the motor so that when the rotor is pushed toward the machine as far as it will go there will be 0 030 clearance between the ends of the machine and motor shafts or the alignment faces on the coupling hubs 3 Proceed with the coupling al
19. ed periodically This can be accomplished through bi weekly alternate operation of the machines Parallel Operation Caution Check valves must be installed in the discharge of each Blower connected in parallel to prevent blow back through the unit not in operation When operating two or more Blowers in parallel it is necessary to be sure that each machine carries its respective share of the load After accomplishing start up of each machine proceed as fol lows Check the current reading at each motor to be sure they are the same If current readings are approximately the same it indicates blowers are sharing equal system load It may be nec essary to re adjust the control device to attain similar readings on the ammeters In most cases low flow protection for the equipment is required Locking Handle Caution Operation of Positive Displacement Blowers in parallel with Centrifugal Blowers is not recommended and may result in damage to the Centrifugal Blower Surge Unstable Low Flow Caution Do not operate the Blower below the minimum safe operating flow Operation below the minimum flow will result in surge or in excessive discharge temperatures Damage to the Blower because of operating below mini mum safe flow will not be covered by Spencer warranty A unit in surge can produce a breathing or pulsating dis charge noise It may also be detected by movement on an ammeter scale or manometer Increasing the volume flow
20. eplace it Install the bracket shaft assembly into the casing in its original position Be sure that the shaft is centered in the casing Assemble the packing 6 and packing plate 6A to the division head 4 Move the motor 23 back into its original position Insure an adequate gap between the coupling hubs Align the motor 23 to the blower shaft 13 following the instructions on page 4 of this manual 5 Rotate the Blower shaft to the 12 o clock position and align the corresponding mark on the motor coupling hub Recouple the motor 23 to the shaft 13 and run the assembly to check for vibration If excessive vibration is present check the shaft 13 for runout 6 On keyed construction the impellers 10 spacers and shims are reassembled in precise reverse order of their disassembly Verify clearance at each stage On other than keyed construction place the first impeller 10C on the shaft up against the division head 4 Mark the shaft 13 approximately 1 8 behind the impeller and withdraw the impeller to this point This will insure a clearance of 1 8 behind the impeller Tighten the hub securely 7 Inspect the interstage packing 14A if applicable on deflector 9B and replace if damaged 8 Place deflector 9B back tightly against the stops in the casing Install the rope packing 18 firmly into the groove using a suitable tool 9 Install the next impeller 10B on the shaft up against the deflector 9B
21. er Turbine Company Windsor Connecticut or the nearest Spencer representative describing in detail the nature of the difficulty before attempting to disassemble the machine Typical Four Bearing Overhung Type 4BOH Discharge 9 i 8 Specify by xO letter also 12 Intake a Yates 1 Pg AN Notes 1 Although three impellers and two deflectors are shown in this 2 The impellers are equipped with a split clamped hub as typical drawing the number in each machine will vary depen illustrated or tapered bushing hubs The latter is tightened dent on the specific machine s design To determine the num on the shaft with Allen socket screws ber of impellers and deflectors in a specific machine consult the factory Be sure to include machine serial number and 3 When ordering replacement parts refer to Section III appropriate impeller deflector letter designation Screened items are recommended spare parts 1 Flexible Coupling 2 Coupling Guard 3 Bearing Bracket Lubrication Fitting 4 Division Head 5 Coupling End Bearing 5A Blower End Bearing 6 Division Head Packing 6A Division Head Packing Plate 7 Bearing Bracket 8 End Head Bolts 9 Deflectors A B Etc 10 Impellers A B C Etc 18 Rope Packing for Deflector 11 End Head Assembly 19 Casing 12 Impeller Bolts or Screws 20 Base for Bearing and Motor 13 Shaft 21 Drive End
22. ignment in accordance with applicable instructions lll Replacement Parts How to order replacement parts When ordering replacement parts it is important that the infor mation you furnish to Spencer is correct and complete Be sure when reading nameplates that you obtain the correct informa tion Record nameplate information on one of the typical name plates shown here and on the cover to use as a reference when ordering parts Remember the more complete the information the quicker the order will be processed incomplete information will result in unnecessary delays and expense through call backs When in doubt consult the factory for further informa tion To order replacement parts furnish the following 1 Record machine serial number and catalog model number from machine nameplate 2 Record motor horsepower from motor nameplate 3 Measure and record the casing diameter 4 Refer to applicable illustration in the instruction manual and locate needed item by its circled call out number Refer to call out list for nomenclature and record 5 When ordering impellers and deflectors be sure to include the letter designation shown on the applicable illustration An alternate method would be to count the number of fans from the end of the casing 6 Include the form number from which you have extracted the nomenclature The form number is shown in the bottom right corner of the cover page and will read AA EE etc Typical Na
23. ing 10 Rope packing 18 Thrust washer 18A Outboard bearing s 20 End head packing 22 End head gasket 25 Interstage deflector packing 29 Impellers 32 Division head packing 34 Inboard bearing 37 Opposite Drive End motor bearing 38 or 39 Metallic packing if machine equipped with packing box IV Lubrication Instructions Caution Recommended blower bearing grease is Chevron SRI Number 2 Use of any other grease will void warranty General Proper lubrication procedure is important to Blower mainte nance These instructions should be closely followed to assure trouble free operation of the equipment Standard Overhung Lubrication Spencer s Standard Overhung Blowers do not require lubrica tion except for motor bearing lubrications required by the motor manufacturer See paragraph entitled Motor Bearing Lubrication Four Bearing Overhung and Four Bearing Outboard Bearing Lubrication Spencer Four Bearing Overhung and Outboard Blowers are equipped with deep groove radial ball bearings designed to carry the thrust and radial loads These bearings are packed with the proper amount and grade of lubricant before the unit is shipped from the factory For this reason lubrication prior to first operation is not recommended and should not be attempted Bearing Lubrication Procedure and Frequency Guide Lubrication is required based on operating frequency and conditions Many bearing failures are caused by excess grease which
24. ing standard overhung amp 4 bearing overhung Impeller rubbing Coupling misaligned 4 bearing machines Inlet and or outlet piping connected to machine without flexible connector causing torque or strain on casing Machine bolted down causing change in alignment Bearing s cramped due to improper fit Piping not properly supported Improper voltage on motor causing assembly to operate at different speed Packing box es too tight too loose wrong packing packing dried out and or worn out out of alignment Mechanical seals misaligned broken or worn out Solids or liquids in or passing through machine Machine operating in surge or unbalanced flow range Stacked Impeller hub nuts too tight Belts on belt drive machine loose slapping Harmonic pulsation from gas engine driver Machine not mounted on solid foundation i e on unstable catwalk etc Incorrect motor selection Ambient temperature too high for insulation class Incorrect voltage Incorrect cycle Electrical short circuit insulation failure Motor overloaded blower too small for system Unbalanced voltage supply Applies to gas boosters only Refer to page 5 for Replacement Parts information Corrective Action Check motor manufacturer s instructions Check voltage supply and connections Check for proper voltage at motor and correct Rebuild motor properly and co
25. isconnected prior to performing Blower maintenance Caution Parts must be reassembled in exactly the same relative position Therefore it is recommended that each part be tagged as it is removed from the machine to facili tate later reassembly It is especially important that the location of each impeller as well as its position on the shaft be marked When ordering replacement impellers and deflectors refer to notes on accompanying illustrations General Configuration The four bearing unit employs the overhung impeller construc tion with the rotating element supported by a rigid ball bearing bracket and shaft The equipment is driven through a flexible coupling Disassembly 1 Remove End Head Bolts 8 and End Head 11 2 On other than keyed construction mark the shaft 13 and impeller 10 hub with an arbitrary 12 o clock reference point Remove the first stage impeller 10A and mark it for reference during reassembly On keyed construction remove snap ring Remove impeller 10A and its hub spacer and any shims marking them for replacement in their proper position 3 Check axial position of each deflector 9 at four radial points with reference to end of casing and record for reference when reassembling unit 4 Remove spacer 15 holding rope packing 18 in place Mark spacer for reference during reassembly 5 Remove rope packing 18 holding deflector in place Remove deflector 9 Mark for reference during
26. l Coupling Alignment or with the manufacturer s instruc tions accompanying each coupling The following procedures apply to start up of all Spencer Blowers Caution The Blower must be electrically wired with regard to the correct direction of rotation A direction of rotation arrow is affixed to the blower casing To check rotation direction depress start button immediately depress stop button and observe that the motor drive shaft rotation coin cides with the arrow attached to the casing Available dis charge positions viewed from intake end and the correct relationship of the discharge position to rotation are shown in the following diagram Under no circumstances should the Blower be operated without being connected to the pipe system with which it is used or motor overload will occur When starting up a Blower it is recommended that a blast gate or other control device be closed When first starting the Blower an ammeter should be connected to the motor cir cuit and the control device opened until full load current is reached At this point the blast gate locking nut should be tight ened This prevents motor overload The blast gate may then be used for throttling purposes Current readings at motor must be compared with readings on ammeters when furnished to be sure they are the same If readings are not the same con tact Spencer s Service Department Periodic Operation Caution All Blowers should be operat
27. mal These will be loose when machine is cold they will tighten as machine reaches operating temperature Rebalance and or clean machine See next problem Machine Vibrating Ignore if audible only when machine turned by hand If otherwise audible replace packings Reassemble and carefully align shaft and motor properly Check alignment check coupling for wear and replace if necessary Relubricate according to instructions Disassemble machine inspect and clean Reassemble and if necessary install filter to prevent further clogging Trouble Machine vibrating Motor Hot Can be checked with surface thermometer Refer to factory for decision as to whether or not it is too hot Probable Cause Motor malfunctions Electric hum or whine some usually normal Wrong voltage low voltage motor not up to speed High voltage will burn out motor and also cause noticeably more noise Bearing see above Motor rebuilt improperly thrust taken on wrong end in standard overhung machine Loose part in motor Low frequency Imbalance Material build up on Impeller s Shaft bent possibly in shipment 001 maximum shaft run per 10 of length for standard and 4 bearing overhung machines Bearing s failure Faulty replacement motor installed and or machine reassembled incorrectly Impeller s failure Mechanical Motor not aligned in cas
28. maplutes Spencer Blower Read Instruction Manual befars hanallhy and starting eu lpment Manulselursd under ons ot mere althe fellow ne United States Patent 0340444 Registered Trademark 2901 146 178 52 741 1 515 417 134 426 841 414 1 348 274 353 254 The Spanesr Turthinc Company Windser CT E195 EHS 5951 e Made ln U S A Plble No PLNS o Spencer Gas Booster Read Instruction Manual befars hanalln4 and starting su lement wan OOO Manutactured under the fallawing Redglstarad Tradamark 62 a 144 376 52 741 134 3263 341 412 1 3 45 2705 353 254 The Spane r Turhinc Compeny Windser CT 16195 SS 951 e M dsin USA Plate Na PLN 351 e The following are recommended spare parts Standard Overhung refer to drawing for item numbers Item Number Nomenclature 1 Motor 2 Division head packing 4 Rope packing 8 Impellers 9 Interstage packing 12 End head gasket 15 Drive End motor bearing 19 Opposite Drive End motor bearing Four Bearing Overhung refer to drawing for item numbers Item Number Nomenclature 1 Flexible coupling 5 Coupling End bearing 5A Blower End bearing 6 Division head packing 6A Division head packing plate 10 Impellers 14 Interstage deflector packing 16 End head gasket 18 Rope packing 21 Drive End motor bearing 23 Opposite Drive End motor bearing Four Bearing Outboard refer to drawing for item numbers Item Number Nomenclature 2 Drive End motor bearing 3 Flexible coupl
29. miliar with this manual prior to uncrat ing and installing or storing machinery it is a precision piece of equipment capable of extended service and life span Realization of this potential can best be achieved through proper handling and adherence to the following instructions Damage resulting from failure to follow cor rect procedures will void warranty Spencer Service Spencer service begins upon receipt of your request for equip ment purchase Our engineers welcome the opportunity to dis cuss your problems and will assist in determining specification requirements if so desired To serve you promptly we maintain a large inventory of electric motors and machine parts Also by combining under one roof the constantly supervised manufac turing assembly and test procedures Spencer can assure you of a unit capable of optimum performance under the most severe service conditions All Spencer machines are factory tested for load capacities and vibrational characteristics This assures long trouble free operations Warranty We warrant that this product will be free from defects in material and workmanship for a period of 18 months from date of ship ment or 12 months from date of startup whichever comes first Within the warranty period we shall repair or replace F O B our Factory such products that are determined by us to be defective This warranty will not apply to any product which has been subjected to misuse negligence
30. of liability consult Soencer s Terms and Conditions of Sale Form 706 2 A rubber connecting sleeve is supplied with most machines It should be installed so that it covers a gap of approximately one inch as illustrated The mounting clamps should be tightened to effect an airtight connection It is important that the tubing or piping not touch or butt the Blower there must be a gap between the machine and piping or tubing Electrical Caution Be sure motor starter controls and other electri cal equipment is the proper type suitable for the applica tion and environment and complies with all applicable codes Be sure that the motor furnished with this machine is rated for the same type of voltage available at the installation site In making the electrical connections follow the wiring instructions furnished Wire and fuses should be of ample capacity to insure that proper voltage is maintained at the motor terminals while starting and running It is important that proper starting equip ment be used All AC machines should be equipped with a magnetic contactor or a manual or automatic compensator depending on the machine size and the installation regulations of the local power company The starters should have thermal overload protection as well as true low voltage protection Start Up Coupling equipped Machines Caution Before start up the coupling must be aligned in accordance with the information contained in Section I
31. ove bolts on both caps 8 and 8A on three arm bearing bracket 33 7 Slide front cap off shaft and push back cap away from bracket 8 Remove bolts holding inboard bracket in position while supporting end of shaft 9 Slide inboard bracket off bearing 10 Remove locknut washers and bearing 11 Replace bearing and parts in their proper order Realign coupling and check the hub before and after bolting motor in place Refer to page 4 Notes A Upon reassembly with all internal parts installed the intake spiral edge should project slightly beyond end of casing so that end head will hold all stationary parts in position B On stacked and keyed impeller construction the first nut installed is tightened with a spanner wrench then loosened one full turn to allow for impeller hub expansion The second nut is brought up to the first nut with the lockwasher in between Lock nut in position with washer tabs Balancing Each machine is fully tested before leaving the Spencer factory to be sure vibration if any is within specifications for the partic ular machine However rough handling during shipment or improper disassembly reassembly of a machine can upset its balance and result in excess vibrations When a machine is being disassembled for repairs mark the parts as they are removed If this is done no trouble should be expected from vibration when they are re assembled in the same order However if the impellers are
32. rols in excessively hot area gt 40 C unless the equipment has been specifically designed for this condition Before placing the machine in its operating position be sure that the blower and motor are readily accessible for servicing by allowing several feet of clear space around the machine Inaccessibility can prove costly in both time and labor Foundation Caution Blowers should not be bolted down No special foundation is necessary for Spencer Blowers A level concrete floor or block is recommended although any other substantial non resonant floor will prove satisfactory The Blower base should be placed on the furnished cork isolating pads or equivalent Level Blower by inserting shims between cork pads and Blower frame if necessary Piping Piping should be properly aligned and supported so as not to produce any stress or strain on the machine casing It is necessary that a flexible connector be used to connect the machine to the piping system It is necessary that piping be restrained to prevent its movement away from the Blower due to air pressure when it is operated All piping should be of ample size to minimize frictional loss It is absolutely essential that all joints be airtight and that there be no leaks in the system Leaky air pipes consume a surprising amount of power and impair the operating efficiency of the system Inlet and Outlet Sleeves Note For complete warranty information including our limitation
33. rrect end play Tighten repair or replace check with motor manufacturer Separate power supply correct frequency Clean Impeller s install filter to prevent further build up Replace shaft Replace bearing s Disassemble machine balance motor reassemble according to instructions in this book and assembly print Replace Impeller s Align motor realign shaft Align coupling Install flexible connection at inlet and outlet Remove bolts use dowel pins or set in guide channels Check bearings shaft and housing correct bearing fit Properly anchor piping beyond flexible connector Check voltage and wiring connections correct voltage Adjust relubricate or replace packing align box es Realign or replace seals or parts Disassemble inspect and clean machine install filter to prevent further contamination Increase air flow to stop surge condition Loosen hub nuts 1 2 turn Tighten belts to proper tension Do not operate at this speed Change motor speed enough to remove harmonic pulsation Re inforce foundation Cool motor or replace with motor having proper insulation Change to correct voltage Change to correct cycle Repair or replace motor Install larger motor and or blower Check with power company for correction 15 The Spencer Products amp Services industrially rated products offering effective solutions for air and gas moving problems e Modular central vacuum systems
34. sconnected prior to performing Blower maintenance Caution Parts must be reassembled in exactly the same relative positions Therefore it is recommended that each part be marked as it is removed from the machine to facili tate later reassembly It is especially important that the location of each impeller as well as its position on the shaft be marked When ordering replacement impellers and deflectors refer to the Notes on accompanying illustration General Configuration The most common Spencer machines standard overhung type construction have the impellers mounted directly on the extended motor shaft and are available as either single stage or multi stage units The multi stage units are provided with deflec tors to channel the air efficiently from one impeller to the next The single stage units are equipped with one impeller mounted between the end head and division head of the machine hous ing The motor bearings support the shaft and impeller assem bly Besides the customary motor maintenance no additional attention is required by the unit Disassembly 1 Remove End Head Bolts 5 and End Head 6 2 Mark the motor shaft and impeller 8 hub with an arbitrary 12 o clock reference point Remove the first stage impeller 8A and mark it for reference during reassembly 3 Check axial position of each deflector 7 at four radial points with reference to end of casing and record for reference when reassembling unit 4
35. stom matched set of two one bearing for thrust and one bearing for radial load These bearings are not interchangeable with commercially available bearings carrying the same part number they can only be used in matched sets as furnished by The Spencer Turbine Company For best results follow instruc tions enclosed with each matched set of bearings Disassembly amp Reassembly 1 Remove packing plate nuts from packing plate 32 and 20 on each end of machine Slide both packing plates and pack ing 32 and 20 on shaft away from heads Remove all pack ing from packing box when applicable 38 amp 39 2 Remove snap ring and back off coupling sleeve Check gap between coupling hubs See coupling manufacturers instruc tions for other than Sier Bath 3 Measure distance B from outboard bearing bracket 19 to outboard bearing cap 17 Remove bolts in thrust assembly housing cap 4 Remove lock nut 15 and washer from end of shaft and loosen bolt 21 binding housing in bracket 5 Remove bracket bolts 19A Using puller remove complete thrust assembly and bearings 6 Remove bolts on end head holding flat ring and end head to casing Use a chain hoist if available to hold head while removing bolts After removal of end head keep shaft supported while removing internal parts 7 Remove intake spiral 13 after marking position to insure correct reassembly See note A 8 Remove rope packing 10 and half deflector 26
36. sufficiently should eliminate this condition This may be accomplished by bleeding air or recirculating the gas ll Coupling Alignment Caution The coupling on this machine was carefully aligned at the factory and the coupling halves and shell s marked to indicate optimum relative position However transportation may have caused coupling misalignment It is essential therefore that the motor and blower shafts be checked for misalignment and carefully realigned if neces sary after installation and before start up as misalignment can cause destructive vibration Coupling alignment should be rechecked again after an hour s operation Final alignment should be made at aver age operating temperature After each alignment check add lubricant per instructions and replace coupling guard On certain Blowers the coupling is disassembled after factory alignment and marking The coupling halves are specially pro tected against the elements and the machine is shipped Prior to start up it is necessary on these machines to assemble align key ways using factory markings and lubricate in accor dance with the instructions supplied with the machine and con tained here Coupling alignment provides for aligning in the horizontal and vertical planes the motor shaft with the Blower shaft and insur ing adequate clearance gap between the two coupling halves Only qualified maintenance personnel should attempt to align a coupling If doubt e
37. to the bear ings and butter both sides with grease so that the grease is flush with the race Use only Chevron SRI 2 grease For out board tandem bearing installation follow procedures packed with each new bearing set Remember these bearings are manufactured as a set to Spencer s rigid specifications Motor Bearing Lubrication Applicable to all Follow motor manufacturer s recommendations Some motors equipped with sealed bearings are not intended to be re lubri cated There are therefore no grease or drain plugs on motors of this type Flexible Coupling Lubrication Gear type couplings must contain lubricant at all times Re lubricate after checking alignment Follow the coupling man ufacturer s recommendations Lubricated couplings on machines shipped from Spencer have been serviced with Texaco Marfax 1 grease All couplings should be re lubricated prior to start up To re lubricate Sier Bath without disassembling coupling remove both lube plugs and position lube holes at 45 to hori zontal Force grease into top hole until clean grease flows out of opposite lower holes Reinstall both plugs and wipe off all excess grease Re lubricate every six 6 months Coupling Half Removal Gear type couplings generally require the application of heat and the use of a puller to remove V Standard Overhung Machine Instructions for Disassembly and Reassembly Multi Stage Warning Be sure all electrical power is di
38. xists as to competency or if problems arise contact The Spencer Turbine Company Sier Bath Coupling See accompanying illustrations Sier Bath gear type couplings are the most common coupling supplied with Spencer equipment These are manufactured to our rigid specifications Sier Bath Dimension C hub to hub Coupling Size Gap 7 8 1 8 1 1 2 1 8 2 1 8 2 1 2 1 4 3 1 4 3 1 2 1 4 4 1 4 41 2 1 4 5 1 4 6 1 4 7 3 8 9 1 2 11 1 2 12 1 2 Remove one snap ring and slide the sleeve off the hub halves Using a feeler gauge verify that the gap between coupling halves is in accordance with the chart above Caution Be careful because some motor shafts are spring loaded axially When using a feeler gauge take care not to compress the shaft and disturb the normal at rest position To align this coupling Spencer recommends one of the follow ing procedures E Reverse Indicator Method Preferred 1 Reinstall the coupling sleeve seal and snap ring 2 Clamp dial indicators on shafts 180 degrees apart 3 Place indicator probes on opposite shafts as shown 4 Rotate both shafts simultaneously in the correct operating direction taking readings at 90 degree intervals 5 Adjust motor to achieve parallel and angular alignments If questions arise contact the Spencer Service Dept Straight Edge Method Permissible 1 Remove the old lubricant and clean the hub teeth 2 Set a ma
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