TECHNICAL SERVICE MANUAL
Contents
1. M models only against the back of the metal retainer so that the spring will push against the adapter and not work itself over the back of the mechanical seal Place the tapered sleeve on the shaft as in Figure 9 Apply a liberal coating of SAE 30 lube oil to the large diameter Portion of the rotor shaft tapered sleeve and to the inside diameter of the mechanical seal rubber parts Start the rotary member of seal with its carbon face out onto the rotor shaft and push it along the shaft until the spring is centered against the adapter Install the Stationary Seal Seat Lubricate the outside diameter of the mechanical seal O Ring seat gasket and flush the lapped face with lube oil Press the stationary seat into the bore until the back unlapped face is just inside the bore Position the stationary seat by installing the seal holder and secure the seal holder to the machined face of the bracket with the seal holder plate Tighten the nuts securing the seal holder plate evenly so that the seal holder will not be distorted Remove the tapered installation sleeve COAT SHAFT AND TAPERED SLEEVE WITH LIGHT OIL BEFORE ASSEMBLY TAPERED SLEEVE MECHANICAL SEAL ROTARY MEMBER FIGURE 6 SEAL ACCESS HOLE FOR SETSCREWS SPRING ADAPTER MECHANICAL SEAL ROTARY MEMBER SEAL SEAT GASKET il SEAL HOLDER RIGHT SIDE f 3 C3 OF PUMP i We2. by it to be free from defects in workmanship or material for a period of one 1 year from date of startup provided that in no event shall this warranty extend more than eighteen 18 months from the date of shipment from Viking The warranty period for Universal Seal series pumps ONLY Universal Seal models listed below is three 3 years from date of startup provided that in no event shall this warranty extend more than forty two 42 months from the date of shipment from Viking UNDER NO CIRCUMSTANCES SHALL VIKING BE LIABLE UNDER THIS WARRANTY OR OTHERWISE FOR SPECIAL INCIDENTAL INDIRECT CONSEQUENTIAL OR PUNITIVE DAMAGES OF ANY KIND INCLUDING BUT NOT LIMITED TO LOST OR UNREALIZED SALES REVENUES PROFITS INCOME COST SAVINGS OR BUSINESS LOST OR UNREALIZED CONTRACTS LOSS OF GOODWILL DAMAGE TO REPUTATION LOSS OF PROPERTY LOSS OF INFORMATION OR DATA LOSS OF PRODUCTION DOWNTIME OR INCREASED COSTS IN CONNECTION WITH ANY PRODUCT EVEN IF VIKING HAS BEEN ADVISED OR PLACED ON NOTICE OF THE POSSIBILITY OF SUCH DAMAGES AND NOTWITHSTANDING THE FAILURE OF ANY ESSENTIAL PURPOSE OF ANY PRODUCT THIS WARRANTY IS AND SHALL BE VIKING S SOLE AND EXCLUSIVE WARRANTY AND SHALL BE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ALL WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT ALL OF WHICH OTHER WARRANTIES ARE EXPRESSLY EXCLUDED See complete warranty at w
3. help in the installation of carbon graphite bushings An arbor press should always be used for installing carbon graphite bushings Be sure bushing is started straight and DO NO STOP pressing operation until bushing is in proper position Starting and stopping will invariably result in a cracked bushing Carbon graphite bushings with extra interference fits are frequently furnished for high temperature operation These bushings must be installed by a shrink fit Heat the bracket or idler to 750 F 400 C and install cool bushings with an arbor press If facilities are not available for this temperature it is possible to install with 450 F 232 C temperature However the lower the temperature the greater the possibility of cracking the bushing Check for additional information on high temperature applications see Engineering Service Bulletin ESB 3 Check bushing for cracks after installation Coat surface of the bushing with amyl acetate banana oil Let it evaporate and any cracks will be visible wet streaks If cracks appear the bushing should be replaced CAUTION Amyl acetate is a flammable solvent and should be used with care SAFETY RELIEF VALVE INSTRUCTIONS ba P DISASSEMBLY DANGER T Before opening any Viking pump liq 9 chamber pumping chamber reservoir relief valve adjusting cap fitting etc Be sure FIGURE 12 VALVE LS Q QS AND M SIZES 1 That any pressure in the chamber has bee
4. means motor turbine engine elc has been locked out or otherwise Warning In addition to possible serious WARNING inlury or death failure to follow the WARNING A been made non operational so that it cannot be started while work is being done on the pump You know what material the pump has been handling have obtained a material safety data sheet MSDS for the material and understand and follow all precautions appropriate for the safe handling of the material BEFORE operating the pump be sure all drive guards are in place DO NOT operate pump if the suction or discharge piping is not connected DO NOT place fingers into the pumping chamber or its connection ports or into any part of the drive train if there is any possibility of the pump shafts being rolated DONOToxcend hopunpstatodpressu speed and VON nis rhe bs as oan sed ied WARNNG coti zin fr era sorte BEFORE operating the pump be sure that itis clean and free from debris WARNING al valves in the suction and discharge pipelines are fully opened All piping connected to the pump is fully supported and correctly aligned with the pump Pump rotation is correct for the desired direction of flow SECTION TSM M22 ISSUE E PAGE OF 14 WARNING A WARNING A WARNING indicated instruction may cause damage to pump and or other equipment INSTAL
5. minimum of maintenance The points listed below will help you get this long service life from your pump LUBRICATION External lubrication must be applied slowly with a hand gun to all lubrication fittings every 500 hours of operation with multi purpose grease NLGI 2 Do not over grease Applications involving very high or low temperatures will require other types of lubrication Refer to Engineering Service Bulletin ESB 515 Consult factory with specific lubrication questions PACKING ADJUSTMENT New packed pumps generaly require some initial packing adjustment to control leakage as packing runs in Make initial packing adjustments carefully and do not over tighten the packing gland After initial adjustment occasional inspection will reveal the need for packing gland adjustment and or replacement of the packing Refer to instructions under Disassembly page 6 and Assembly page 7 regarding repacking the pump END CLEARANCE ADJUSTMENT After long term operation it is sometimes possible to improve the performance of the pump without major repair through adjustment of end clearance of the pump Refer to Instructions under Thrust Bearing Adjustment page 12 for information regarding this procedure CLEANING THE PUMP It is good practice to keep the pump as clean as possible This will facilitate inspection adjustment and repair work and help prevent omission of lubrication of fittings covered or hidden with dirt STOR
6. rings must be removed before the rotor and shaft can be removed from the pump these rings are not used in the Q QS and M size pumps Carefully remove the rotor and shaft As the shaft is being removed decreasing shaft diameters tend to allow the shaft to drop onto the bracket bushing To avoid damaging the bracket bushing support the rotor and do not allow either end of the shaft to tilt downward NOTE Considerable force may be required to remove the rotor and shaft from the pump Be careful seal parts are not damaged as the rotor and shaft is removed The seal seat and rotary member of the seal can now be removed from the side opening of bracket SECTION TSM M22 ISSUE E PAGE 9 OF 14 10 Loosen the four setscrews over the outer and inner end caps Remove both end caps ball bearing and bearing spacer collars See Figure 5 page 9 NOTE The inner end cap can be removed through the side openings in the bracket Clean all parts thoroughly and examine for wear or damage Check lip seals ball bearing bushings and mechanical seal and replace as necessary Check all other parts for nicks burrs excessive wear and replace if necessary NOTE Be sure shaft is free from burrs and foreign particles that might damage the bracket bushing Scratches on the shaft in the seal area will provide leakage paths under the mechanical seal Check casing for wear or damage while mounted to the bracket ASSEMBLY 1 Install th
7. rotor shaft cannot be turned 4 Make a reference mark on the bracket end opposite a notch on the outer end cap Back off the outer end cap the required number of notches as shown in the Total End Clearance Chart see Figure 11 Each notch represents 002 end clearance 5 High viscosity liquids require additional end clearances The amount of extra end clearance depends on the viscosity of the liquid pumped For specific recommendations consult the factory 6 Tighten the inner end cap with a spanner wrench Tap the spanner wrench lightly but DO NOT OVER TIGHTEN as it will damage the threads 7 Tighten the set screws that hold the inner and outer end caps to prevent their turning in the bracket 8 Check the rotor to determine if it tums freely if it does not add more end clearance TOTAL END CLEARANCE CHART Pup TURN OUTER END CAP TOTAL UE COUNTER CLOCKWISE END NO OF NOTCHES CLEARANCE is 5 010 Q QS AND M 75 015 Total End Clearance includes extra clearance for temperatures of 450 F 232 C FIGURE 11 SECTION TSM M22 ISSUE E PAGE 12 OF 14 INSTALLATION OF CARBON GRAPHITE BUSHINGS When installing a new carbon graphite idler or bracket bushing extreme care should be taken to prevent breaking as it is a brittle material and easily cracked If cracked the bushing will quickly disintegrate NOTE Using a lubricant and adding a chamfer on the bushing and the mating part will
8. tang could result in early bearing failure and cause damage to rest of pump Remove length of hardwood or brass from port opening 12 Adjust the pump end clearance as in Thrust Bearing Adjustment page 12 DANGER g pump be sure all drive equipment guards are in place Failure to properly mount guards may result in serious injury or death SECTION TSM M22 ISSUE E PAGE 7 OF 14 PART 2 MECHANICAL SEAL PUMPS GX i rT T Le m MET ia pe GO G vum e 6 b d EXPLODED VIEW FOR MODEL LS4225 ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART 1 Locknut 44 Mechanical Seal 27 ldler and Bushing Assembly 2 Lockwasher 15 Grease Fitting 28 Idier Bushing 3 End Cap Outer 16 Pipe Plug 29 Head Gasket 4 Lip Seal for End Cap 17_ Bracket and Bushing Assembly 30 Idler Pin 5 Bearing Spacer Collar Outer 18 Capscrew for Bracket 31 Head and Idler Pin Assembly 6 Bal Bearing 19 Bracket Bushing 32 Gasket for Jacket Head Plate 7 Bearing Spacer Collar Inner 20 Bracket Gasket 33 Jacket Head Plate 8 Ring Half Round 21 Casing 34 Capscrew for Head 9 End Cap inner 22 Nutlor Flanges 35 Capscrew for Relief Valve 10 Nutfor Seal Holder 23 Capscrew for Flanges 36 Internal Relief Valve 4 Capscrew for Seal Holder 24 Pipe Flange Gasket 37 Cover Plate Relief Valve 12_ Seal Plate 25 Pipe Plug 13 Seal Holder 26 _ Roto
9. 8_ Nutfor Flanges 29 Stud for Head 8 _ Packing Gland 19 Stud for Flanges 30 Nutfor Head 9 Packing Gland Nut 20 Casing QS size has opposite ports 31 Relief Valve Gasket 40 Packing Gland Capscrew 21 Pipe Flange Gasket 32 Capscrew for Relief Valve 41 Packing 22 Pipe Plug 33_ intemal Relief Valve SECTION TSM 1422 ISSUE E PAGES OF 1a DISASSEMBLY DANGER Before opening any Viking pump liquid chamber pumping chamber reserv relief valve adjusting cap fitting etc Be sure Thatany pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings orconnections That the driving means motor turbine engine etc has been locked out or made non operational so that it cannot be started while work is being done on pump That you know what liquid the pump has been handling and the precautions necessary to safely handle the liquid Obtain a material safety data sheet MSDS for the liquid to be sure these precautions are understood Failure to follow above listed precautionary measures may result serious injury or death NYLON INSERT INNER END CAP HALF ROUND RINGS INNER SPACER COLLAR z AT ri SHAFT Mark head and casing before disassembly to make sure they are reassembled properly Remove the head from the pump CAUTION DO NOT ALLOW THE IDLER TO FALL FROM THE IDLER PIN Tilting the top of the head
10. AGE If the pump is to be stored or not used for any appreciable length of time it should be drained and then a light coat of lubricating and preservative oil should be applied to the internal parts Lubricate all fittings SECTION TSM M22 ISSUE E PAGES OF 14 MAINTENANCE SUGGESTED REPAIR TOOLS The following tools must 6 Spanner wrench adjustable pin type for use on double be available to properly repair Series 225 and 4225 pumps end caps Source 482 J H Williams amp Co or equal These tools are in addition to standard mechanics tools such as open end wrenches pliers screwdrivers etc Most of the items can be obtained from an industrial supply house 8 Arbor press Brass bar 1 Soft Headed hammer 2 Allen wrenches some mechanical seals and set collars 3 Packing hooks flexible packed pumps Large for 0 375 inch and up cross section packing 4 Mechanical seal installation sleeve 5 Bearing locknut spanner wrench Source 471 J H Williams amp Co or equal ROTOR JACKETED AREA PACKING GLAND BRACKET JACKETED HEAD CASING FIGURE 3 w Of Packed Pump Model M225 with Callouts QS size casing has opposite ports Cutaway SECTION TSM M22 ISSUE E PAGE 4 OF 14 PART 1 PACKED PUMPS 08060 aS d EXPLODED VIEW FOR MODEL LS225 IU o uuuu ITEM NAME OF PART ITEM NAME OF PART TEM N
11. AME OF PART 1 Locknut 44 Packing Retainer Washer 27 idler Bushing 2 Lockwasher 15 _ Bracket Bushing 28 Head Gasket 3 End Cap Outer 46 Grease Fitting 29 Idler Pin 4 Lip Seal for End Cap 47 Bracket and Bushing Assembly 30 Head and Idler Pin Assembly 5 Bearing Spacer Colar Outer 18 Capscrew for Bracket 31 Gasket for Jacket Head Plate 6 Bal Bearing 19 Bracket Gasket 32 Jacket Head Plate 7 Bearing Spacer Colar mner 20 Casing 33 Gapscrew for Head 8 Ring Half Round 23 Nut for Flanges 34 Relief Valve Gasket 8 End Cap inner 22 Capscrewfor Flanges 35 Capscrew for Relief Valve 40 Packing Gand 23 Pipe Flange Gasket 36 internal Relief Valve 11 Packing Gland Nut 24 Pipe Plug 37_ Gover Plate Relief Valve 42 Packing Gland Capscrew 25 Rotorand Shaft Assembly 38 Packing 26_ idler and Bushing Assembly Wa toO E Qo EXPLODED VIEW FOR MODELS Q QS AND M225 ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART 1 Locknut 12 Packing Retainer Washer 23 Rotor and Shaft Assembly 2 Lockwasher 13 Bracket Bushing 24 Idler and Bushing Assembly 3 End Cap Outer 14_ Bracket and Bushing Assembly 25 Idler Bushing 4 Lip Seal for End Cap 15 Grease Fitting 26 Head Gasket 5 Bearing Spacer Collar Outer 16 Capscrew for Bracket 27 idler Pin 6 Ball Bearing 17 Bracket Gasket 28 Head and Idler Pin Assembly 7_ End Cap inner 1
12. Electronic copies of the most current TSM issue can be found on the Viking Pump website at www vikingpump com TECHNICAL SERVICE MANUAL oy tsm 1422 HEAVY DUTY BRACKET MOUNTED PUMPS pace 1 oF 14 SERIES 225 AND 4225 SIZES LS Q QS M Issue E CONTENTS Introduction Safety Information Special Information Maintenance Packed Pumps Disassembly Assembly d Mechanical Seal Pumps M x Disassembly 9 Assembly 5 ngo Thrust Bearing Adjustment 12 Installation of Carbon Graphite Bushings pida Pressure Relief Valve Instructions 13 SIZE LS FIGURE 1 INTRODUCTION Shown with Jacketed Head Plate The illustrations used in this manual are for identification purposes only and cannot be used for ordering parts Obtain a parts list from the factory or a Viking representative Always give complete name of part part number and material with model number and serial number of pump when ordering repair parts The unmounted pump or pump unit model number and serial number are on the nameplate In the Viking model number system basic size letters are combined with the series number 225 and 4225 and used to indicate either an unmounted pump or mounted pump unit UNMOUNTED PUMP UNITS PACKED MECH SEAL Units are designated by the unmounted pump model numbers followed by a letter LS225 LS4225 indicating drive style Q25 0425 vie QS225 QS4225 D Direct Connected SIZES O QS AND M s FI
13. GURE 2 Moos manag R Viking Speed Reducer Shown with Jacketed Relief Valve Type Head P Commercial Speed Reducer This manual deals only with Series 225 and 4225 Heavy Duty Bracket Mounted Pumps Refer to Figures 1 through 43 for general configuration and nomenclature used in this manual Pump specifications and recommendations are listed in Catalog Section 142 Series 225 and 4225 Heavy Duty Bracket Mounted Pumps CORPORATION VIKING PUMP INC e A Unit of IDEX Corporation e Cedar Falls IA 50613 USA SAFETY INFORMATION AND INSTRUCTIONS IMPROPER INSTALLATION OPERATION OR MAINTENANCE OF PUMP MAY CAUSE SERIOUS INJURY OR DEATH AND OR RESULT IN DAMAGE TO PUMP AND OR OTHER EQUIPMENT VIKING S WARRANTY DOES NOT COVER FAILURE DUE TO IMPROPER INSTALLATION OPERATION OR MAINTENANCE THIS INFORMATION MUST BE FULLY READ BEFORE BEGINNING INSTALLATION OPERATION OR MAINTENANCE OF PUMP AND MUST BE KEPT WITH PUMP PUMP MUST BE INSTALLED OPERATED AND MAINTAINED ONLY BY SUITABLY TRAINED AND QUALIFIED PERSONS THE FOLLOWING SAFETY INSTRUCTIONS MUST BE FOLLOWED AND ADHERED TO AT ALL TIMES Symbol Danger Failure to follow the indicated or death BEFORE opening any liquid chamber pumping chamber reservoir relief valve adjusting cap fitting elc be sure that Any pressure in the chamber has been completely Vented through the suction or discharge lines or other appropriate openings or connections The pump drive system
14. L pressure gaugesisensors next to the pump suction and discharge connections to monitor pressures USE extreme caution when lifting the pump Suitable lifting devices should be used when appropriate Lifting eyes installed on the pump must be used only to lift the pump not the pump with drive andor base plate Ifthe pump is mounted on a base plate the base plate must be used for all iting purposes If sings are used for ing they must be safely and securely attached For weight of the pump alone which does not include the drive and or base plate refer to the Viking Pump product catalog DO NOT attempt to dismantle a pressure relief valve that has not had the spring pressure relieved or is mounted on a pump that is operating AVOID contact with hot areas of the pump and or drive Certain operating conditions temperature control devices jackets heat tracing etc improper instalation improper operation and improper maintenance can all cause high temperatures on the pump andior drive THE PUMP must be provided with pressure protection This may be provided through a relief valve mounted directly on the pump an in ine pressure relief valve a torque limiting device or a rupture disk If pump rotation may be reversed during operation pressure protection must be provided on both sides of pump Relief valve adjusting screw caps must always point towards suction side of the pump If pump rotation is reversed position of the relief
15. a HOLDER Zr PLATE SET COLLAR SEAL SEAT FIGURE 7 OPTIONAL MECHANICAL SEAL LEFT SIDE OF PUMP a SEAL SEAT GASKET SEAL HOLDER PLATE SEAL HOLDER SEAL SEAT MECHANICAL SEAL ROTARY MEMBER SEAL ACCESS HOLE FOR SETSCREWS FIGURE 8 STNADARD MECHANICAL SEAL 6 Slide the inner bearing spacer collar over the shaft with recessed end toward rotor NOTE The pair of half round rings must be inserted in the groove in the shaft and then slide the spacer collar over them See Figure 10 not used on Q and M size pumps 7 Press the lip seal lip toward end of shaft into the inner end cap and insert the end cap through the shaft end of the bracket With two fingers turn it clockwise looking at end of shaft until it engages the threads The bosses on the end cap must be toward the rotor Tum the end cap until it projects slightly into the opening on the side of the bracket NOTE The end cap must not be turned so far that the lip of the lip seal drops off the end of the spacer collar on the shaft or the end cap becomes disengaged with the threads See Figure 10 8 Pack the ball bearing with multi purpose grease place on the shaft and push or gently drive into place in the bracket 9 Install the lip seal lip toward end of shaft and bearing spacer in the outer end cap and turn the end cap into the bracket until tight against the bearing See Figure 10 10 Put lockwasher and locknut on shaft Inse
16. back as it is removed will prevent this occurrence Avoid damaging the head gasket if possible If pump is furnished with a relief valve it need not be removed from head or disassembled at this point Refer to Pressure Relief Valve Instructions page 13 If the pump has a jacket head plate this plate will separate from the head when the head is removed from the pump The gasket for jacket head plate between the head and the jacket head plate should be removed and the gasket surfaces on the above parts cleaned Disassembly will probably require replacement of the gasket for jacket head plate between the pump head and jacket head plate These gaskets should be carried as spare parts for pumps thus equipped Remove the idler and bushing assembly Bend up tang of lockwasher and with a spanner wrench remove the locknut and lockwasher from the shaft NOTE A piece of hardwood or brass inserted in casing port and between rotor teeth will prevent the shaft from turning Remove the packing gland nuts GREASE FITTING LOCATION SETSCREWS OUTER END CAP LOCKWASHER LOCKNUT ANNI INNER LIP SEAL SECTION TSM M22 ISSUE E PAGE 6 OF 14 n BAR Pre A ATU D OUTER SPACER COLLAR X NM OUTER LIP SEAL FIGURE 4 10 LS Tap the shaft forward approximately 74 inch and check for a pair of half circle round wire rings under the inner bearing spacer collar See Figure 4 NOTE These m
17. e bracket bushing if carbon graphite see Installation of Carbon Graphite Bushings on page 12 Assemble the rotor and shaft in the bracket Start the end of the shaft in the bracket bushing and turn from right to left slowly pushing the rotor into the casing Coat the idler pin in the head with light oil and place the idler and bushing on the idler pin If replacing a carbon graphite idler bushing see Installation of Carbon Graphite Bushings on page 12 Put the head gasket on the head and install the head and idler assembly on the pump Tighten the head capscrews or nuts STANDARD MECHANICAL SEAL PTFE see Figure 8 The seal is simple to install and good performance will result if care is taken during installation NOTE Never touch the sealing faces with anything but the fingers of a clean cloth Clean the rotor shaft and bracket seal housing bore Make sure they are free of dirt grit and scratches Gently radius the leading edge of the shaft diameter over which the seal must be placed A tapered sleeve is available at extra cost for the Q QS and M pumps from Viking Pump Division for installation of the mechanical seal on the shaft as in Figure 6 The LS pump shaft is tapered and an installation sleeve is not available Coat the tapered sleeve and the inside of the rotary member with a generous quantity of SAE 30 non detergent oil Grease is not recommended Start the rotary member on the shaft and ov
18. er the tapered sleeve CAUTION Some seals may be equipped with installation clips These must be removed after seal is placed on the proper diameter portion of the shaft SECTION TSM M22 SUE E PAGE 10 OF 14 Move the rotary member so the setscrews are directly below the seal access holes on the left side of the bracket viewed from the shaft end see Figure 8 Tighten all setscrews securely to the shaft Flush the sealing faces of both the rotary member and seal seat with oil and install the seal seat and a seat gasket over the end of the shaft against the machined bracket face Assemble the other seal seat gasket seal holder seal holder plate capscrews and nuts and tighten securely Remove the tapered installation sleeve OPTIONAL MECHANICAL SEAL See Figure 7 Install the seal set collar examine the set collar to be sure that there are no burrs or scratches and that the setscrews are withdrawn so that the shaft will Not be scratched when the set collar is installed Place the set collar onto the shaft push it into the seal chamber until the centerline of the setscrews coincides with the centerline of the tapped seal access holes on the right side of the bracket viewed from the shaft end Tighten all the setscrews in the set collar securely Install the rotating member of the seal Slide the spring over the shaft into the seal chamber and onto the set collar pilot Center the spring adapter an Q QS amp
19. f valve is removed for repairs be sure to replace in same position The valve cap should point towards the suction port DANGER Before starting pump be sure all drive equipment guards are in place Failure to properly mount guards may result in serious injury or death PRESSURE ADJUSTMENT If the pressure setting of the safety relief valve is to be changed from that which the factory has set the following instructions should be carefully followed Remove the valve cap which covers the adjusting screw and loosen the lock nut which locks the adjusting screw so pressure setting will not change during operation of pump A pressure gauge somewhere in the discharge line must be used for actual adjustment operation The adjusting screw should be turned in for increasing the pressure or turned out for decreasing the pressure With the discharge line closed at a point beyond the pressure gauge the gauge will show the maximum pressure the valve will allow while pump is in operation IMPORTANT In ordering parts for safety relief valve always be sure to give model number and serial number of pump as it appears on nameplate and the name of the part wanted When ordering springs be sure also to give pressure setting desired CORPORATION VIKING PUMP INC e A Unit of IDEX Corporation e Cedar Falls IA 50613 USA SERIES 225 AND 4225 SIZES LS Q QS M isuE E VIKING PUMP WARRANTY Viking warrants all products manufactured
20. ions That the driving means motor turbine engine etc has been locked out or made non operational so that it cannot be started while work is being done on pump That you know what liquid the pump has been handling and the precautions necessary to safely handle the liquid Obtain a material safety data sheet MSDS for the liquid to be sure these precautions are understood Failure to follow above listed precautionary measures may result in serious injury or death Mark head and casing before disassembly to make sure they are reassembled properly Remove the head from the pump CAUTION DO NOT ALLOW THE IDLER TO FALL FROM THE IDLER PIN Tilting the top of the head back as it is removed will prevent the idler from falling Avoid damaging the head gasket if possible If pump is furnished with a relief valve it need not be removed from the head or disassembled at this point see page 13 for Pressure Relief Valve Instructions If the pump has a jacket head plate this plate will separate from the head when the head is removed The gasket for jacket head plate between the head and the jacket head plate should be removed and the gasket surfaces on the above parts cleaned Disassembly will probably require replacement of the gasket for jacket head plate between the pump head and jacket head plate These gaskets should be carried as spare parts for pumps thus equipped Remove the idler and bushing assembly Be
21. kwise rotation When rotation changes the suction and discharge is reversed PRESSURE RELIEF VALVES 1 Viking pumps are positive displacement pumps and must be provided with some sort of pressure protection This may be a relief valve mounted directly on the pump an inline pressure relief valve a torque limiting device or a rupture disk 2 There are relief valve options available on those pump models designed to accept a relief valve Options may include a retum to tank relief valve and a jacketed relief valve Pumps equipped with a jacketed head plate are generally not available with a relief valve 3 If pump rotation is to be reversed during operation pressure protection must be provided on both sides of pump 4 Relief valve adjusting screw cap must always point towards suction side of pump If pump rotation is reversed remove pressure relief valve and tum end for end Refer to Figures 1 and 2 page 1 5 Pressure relief valves cannot be used to control pump flow or regulate discharge pressure For additional information on pressure relief valves Refer to Technical Service Manual TSM000 and Engineering ESB 31 SPECIAL MECHANICAL SEALS Extra care should be taken in repair of these pumps Be sure to read and follow all special instructions supplied with your pump MAINTENANCE The series 225 and 4225 pumps are designed for long trouble free service life under a wide variety of application conditions with a
22. n completely vented through the suction or discharge lines or other appropriate openings orconnections That the driving means motor turbine engine etc has been locked out or made non operational so that it cannot be started while work is being done on pump That you know what liquid the pump has been handling and the precautions necessary to safely handle the liquid Obtain a material safety data sheet MSDS for the liquid to be sure these precautions are understood FIGURE 13 JACKETED VALVE LS Q QS AND M SIZES Failure to follow above listed precautionary measures may result in serious injury or death LIST OF PARTS 1 Valve Cap 6 Valve Body NOTE Mark valve and head before disassembly to insure 2 Adusihg Surew 7 Valve Spina proper reassembly Si Lakak 5 Poppet do Paci val oe 4 Spring Guide 9 Cap Gasket 5 _Bonnet 10 Bonnet Gasket 2 Measure and record the length of extension of the adjusting screw Refer to A on Figures 12 and 13 3 Loosen the locknut and back out adjusting screw until spring pressure is released 4 Remove bonnet spring guide spring and poppet from valve body Clean and inspect all parts for wear or damage and replace as necessary SECTION TSM M22 ISSUE E PAGE 13 OF V TECHNICAL SERVICE MANUAL HEAVY DUTY BRACKET MOUNTED PUMPS SECTION TSM 1422 PAGE 140F 14 ASSEMBLY Reverse the procedure outlined under disassembly I
23. nd up tang of lockwasher and with a spanner wrench remove the locknut and lockwasher from the shaft NOTE A piece of hard wood or brass inserted in the casing port and between the rotor teeth will prevent the shaft from turning COLLAR FIGURE 5 STANDARD MECHANICAL SEAL Type 9 PTFE is standard If the mechanical seal fails it can be replaced with a new one There are two basic parts to the mechanical seal the rotary member and the stationary seat See Figure 8 page 11 To remove the mechanical seal loosen the setscrews around the outside of the mechanical seal which lock it to the shaft Access to the seal setscrews is through the seal access hole located on the left hand side of the pump mounting bracket viewed from the shaft end See Figure 8 page 11 Rotate the rotor shaft so all setscrews come into view three on Q QS amp M four on LS Remove the nuts holding the seal holder plate Remove the seal holder and plate OPTIONAL MECHANICAL SEAL Type 1 or equivalent single synthetic rubber bellows style It uses a set collar behind the seal spring See Figure 7 page 11 Two setscrews must be loosened before shaft can be removed Access to the collar setscrews is through the seal access hole on the right hand side of the mounting bracket viewed from the shaft end Tap the shaft toward head approximately inch and check for a pair of half circle round wire rings under the inner bearing spacer collar NOTE These half
24. o left slowly pushing the rotor into the casing Place the packing retainer washer in the bottom of the packing chamber and pack the pump It is good practice to install a set of new packing The pump should be packed with a packing suitable for the liquid being pumped Install and seat each ring of packing one at a time staggering the ring joints from one side of the shaft to the other Lubricate the packing rings with oil grease or graphite to aid assembly A length of pipe or tubing will help to install and seat each packing ring Install the packing gland capscrews and nuts Back the rotor and shaft out of the casing just far enough to insert the packing gland through the side opening of the bracket and over the end of the shaft This gland cannot be installed with the rotor and shaft in place NOTE Make sure the gland is installed square and nuts tightened evenly Tighten nuts wrench tight and then back off until gland is slightly loose 9 Coat the idler pin with light oil and place the idler and bushing on the idler pin in the head If replacing a carbon graphite idler bushing see Installation of Carbon Graphite Bushings page 12 Put the 010 to 015 thick head gasket on the head and install the head and idler assembly on the pump The jacket head plate and gasket must be installed at this time if your pump is equipped with this feature Tighten the head capscrews Slide the inner bearing spacer collar over the shaf
25. r and Shaft Assembly 9oeo OO 990P i M vmm M 2a 1 o EXPLODED VIEW FOR MODELS Q QS AND M4225 TEM NAME OF PART TEM NAME OF PART ITEM NAME OF PART 1 Locknut 13 Pipe Plug 25_ Idler and Bushing Assembly 2 _ Lockwasher 44 _ Grease Fitting 26 Idler Bushing 3_ End Cap Outer 48 _ Bracket and Bushing Assembly 27 Head Gasket 4 ip Seal for End Cap 16 _ Capscrew for Bracket 28 idler Pin 5 _ Bearing Spacer Collar 17_ Bracket Bushing 29 Head and Idler Pin Assembly 6 _ Ball Bearing 18 _ Bracket Gasket 30_ Stud for Head 7_ End Cap inner 38 Stud for Flanges 31 Nut for Head 8 Nut for Seal Holder 20 Nut for Flanges 32 Relief Valve Gasket 9 Capscrew for Seal Holder 21_ Casing QS size has opposite ports 33 Capscrew for Relief Valve 10 Seal Holder Piate 22_ Pipe Flange Gasket 34 internal Relief Valve 31 Seal Holder 23 Pipe Plug 42 Mechanical Seal 24 Rotor and Shaft Assembly SECTION TSM 422 SUE E PAGE S OF 14 GREASE FITTING DISASSEMBLY DANGER Before opening any Viking pump liqui HALE chamber pumping chamber reservoir relief valve adjusting cap fitting etc Be sure OUTER END CAP LOCKWASHER INNER SPACER LOCKNUT COLLAR That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings orconnect
26. rt length of hardwood or brass through port opening between rotor teeth to keep shaft from turning Tighten locknut to 120 180 ft Ibs Torque LS or 170 190 ft Ibs Torque Q QS M Bend one tang of lockwasher into slot of locknut If tang does not line up with slot tighten locknut until it does Failure to tighten locknut or engage lockwasher tang could result in early bearing failure and cause damage to rest of pump Remove length of hardwood or brass from port opening SPRING MECHANICAL SEAL ROTARY MEMBER j WAPERED SLEEVE COAT WITH LIGHT OIL BEFORE ASSEMBLY FIGURE 9 GREASE FITTING ROUND LOCKWASHER RINGS INNER SPACER LOCKNUT COLLAR ince SPACER LIP SEAL COLUAR OUTER LIP SEAL BALL BEARING BRACKET FIGURE 10 1 Adjust the pump end clearance as in Thrust Bearing Adjustment see Page 11 DANGER g pump be sure all drive Before stai equipment guards are in place Failure to properly mount guards may result in serious injury or death SECTION TSM 1422 ISSUE E PAGE H OF 14 THRUST BEARING ADJUSTMENT See Figure 10 page 11 1 Loosen the two setscrews over each of the outer and inner end caps 2 Tum the inner end cap clockwise viewed from shaft end until it projects slightly into the opening on the side of the bracket exposing approx three threads 3 Tum the outer end cap clockwise until the rotor is tight against the head and the
27. t with recessed end toward the rotor Q QS and M bearing spacer collar is not recessed Place the pair of half round rings not used on Q QS and M in the shaft and slide the inner spacer collar over them See Figure 4 Press the lip seal lip toward end of shaft into the inner end cap and insert the end cap through the shaft end of the bracket With two fingers turn it clockwise looking at end of shaft until it engages the threads The bosses on the end cap must be toward the rotor Turn the end cap until it projects slightly into the opening on the side of the bracket NOTE The end cap must be turned so far that the lip of the seal drops off the end of the spacer collar on the shaft or the end cap becomes disengaged with the threads See Figure 4 Pack the ball bearing with multi purpose grease place on the shaft and push or drive into place in the bracket 10 Install the lip seal lip toward end of shaft and bearing 11 Put lockwasher and locknut on shaft spacer in the outer end cap and turn the end cap into the bracket until tight against the bearing See Figure 4 Insert length of hardwood or brass through port opening between rotor teeth to keep shaft from turning Tighten locknut to 120 150 ft Ibs Torque LS or 170 190 ft Ibs Torque Q QS M Bend one tang of lockwasher into slot of locknut If tang does not line up with slot tighten locknut until it does Failure to tighten locknut or engage lockwasher
28. ust be removed before rotor and shaft can be removed from the pump These rings are not used in Q QS and M size pumps Carefully remove rotor and shaft to avoid damage to the bracket bushing Remove the packing gland from side of bracket Loosen the four setscrews over the inner and outer end caps Remove both end caps lip seals and bearing spacer collars See Figure 4 The inner cap can be removed through the side opening of the bracket Remove the packing and packing retainer washer Clean all parts thoroughly and examine for wear and damage Check lip seals ball bearings bushings and idler pin and replace if necessary Check all other parts for nicks burrs excessive wear and replace if necessary Wash bearings in clean solvent Blow out bearings with compressed air Do not allow bearings to spin turn them slowly by hand Spinning bearings will damage race and balls Make sure bearings are clean then lubricate with non detergent SAE 30 weight oil and check for roughness Roughness can be determined by turning outer race by hand If bearings have roughness bearings will need to be replaced Casing can be checked for wear and or damage while stil mounted on bracket ASSEMBLY 1 2 Install the bracket bushing If carbon graphite see Installation of Carbon Graphite Bushings page 12 Assemble the rotor and shaft in the bracket Start the end of the shaft in the bracket bushing and tum from right t
29. valve must be changed Pressure relief valves cannot be used to control pump flow or regulate discharge pressure For additional information refer to Viking Pump s Technical Service Manual TSM 000 and Engineering Service Bulletin ESB 31 THE PUMP must be installed in a matter that allows safe access for routine maintenance and for inspection during operation to check for leakage and monitor pump operation SPECIAL INFORMATION DANGER Before opening any Viking pump liqui chamber pumping chamber reservoir relief valve adjusting cap fitting etc Be sure That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings orconnections That the driving means motor turbine engine etc has been locked out or made non operational so that it cannot be started while work is being done on pump That you know what liquid the pump has been handling and the precautions necessary to safely handle the liquid Obtain a material safety data sheet MSDS for the liquid to be sure these precautions are understood Failure to follow above listed precautionary measures may result in serious injury or death JACKETING of the bracket and head provide large chambers at both ends of the pumping chamber and around the stuffing box for temperature control of the product in the pump ROTATION Viking pumps operate equally well in a clockwise or countercloc
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