Viking Pump Technical Service Manual _ for _ Series _
Contents
1. FLUSH oetan MECHANICAL SEAL SEAL access ACRES ROTARY MENEER SEAT GASKET SEAL HOLDER NOT USED ON LS p SEAL PLATE PACKING GLAND ON LS in conjunction with Step 7 of Disassembly page 4 AL Ks SET COLLAR campos ASSEMBLY SEAL SEAT VENT CONNECTION MECHANICAL CARSCREW SEAL FIGURE 9 ELASTOMERIC BELLOWS SEAL CARTRIDGE TYPE CENTER 1 NOTE Burrs left on shaft can damage O ring on seal cups sleeve during instalan Inspect shaft for burrs and remove any found with a fine grade of emery cioth SEAL i L GOtLAR 2 Clean rotor shaft and face of seal chamber X capscrew X NUT FIGURE 7 CARTRIDGE MECHANICAL SEAL SEAL INSTALLATION TAPERED INSTALLATION SLEEVE SHAFT COAT ROTOR SHAFT TAPERED INSTALLATION SLEEVE AND INNER DIAMETER OF MECHANICAL SEAL WITH LIGHT OIL BEFORE ASSEMBLY FIGURE 8 Place tapered installation sleeve on shaft Coat rotor shaft tapered installation sleeve and O ring in the inside diameter of cartridge seal sleeve with a generous amount of light oil Refer to Figure 8 4 Slide cartridge seal over installation sleeve on shaft until it contacts the seal chamber face Remove tapered installation sleeve from shaft Follow steps 9 12 on page 6 under Assembly Insert gland capscrews and secure gland to bracket face NOTE Turn shaft several turns while gland is loose to center seal then tighten gland tight enough to compress gaske2. Q and QS PUMPS ONLY Tapered roller bearings require preload to operate properly To set preload tighten end cap so that inner races of bearings cannot be rotated by hand Back the end cap off to allow inner races to rotate with slight resistance Lock end cap in place with two setscrews in the flange of the bearing housing 8 When assembling pack pump use packing suitable for liquid being pumped Install packing staggering the joints from on side of shaft to other Lubricate packing rings with oil grease or graphite to aid assembly Install packing capscrews and nuts Make sure gland is installed square and nuts are tightened evenly Tighten nuts until packing gland is snug against packing NOTE See Seal Installation page 7 when re assembling a seal pump 9 Slide inner spacer collar over shaft with recessed end facing rotor Q and QS bearing spacer collars are not recessed Place pair of half round rings on shaft and slide inner bearing spacer collar over half round rings to lock them in place There is no pair of half round rings on Q and OS size pumps 10 Thread he bearing housing with lipseals end cap outer bearing spacer collar and bearings installed into bracket 41 Put lockwasher and locknut on shaft Insert length of hardwood or brass through port opening between rotor teeth to keep shaft from turning Tighten locknut to 120 150 ftlbs torque LS or 170 190 fts torque Q QS If ta
3. 4 Consult factory with specific questions on high temperature applications Refer to Engineering Service Bulletin ESB 3 PRESSURE RELIEF VALVE INSTRUCTIONS TPP LPF 13 jr VALVE LIST OF PARTS 1 Valve Cap 6 Valve Body 2 Adjusting Screw 7 Valve Spring 3 LockNut 8 Poppet 4 Spring Guide 9 Cap Gasket 5 Bonnet 10 Bonnet Gasket FIGURE 12 SIZELS VALVE LIST OF PARTS 1 Valve Cap 6 Valve Body 2 Adjusting Screw 7 Vale Spring 3 LockNut 8 Poppet 4 Spring Guide 9 Cap Gasket 5 Bonnet 10 Bonnet Gasket FIGURE 13 SIZES Q AND QS TECHNICAL SERVICE MANUAL UNIVERSAL SEAL HEAVY DUTY PUMPS SERIES 124A 4124A 224A 224AH 4224A AND 4224AH CAST IRON SERIES 126A 4126A 226A AND 4226A DUCTILE IRON SECTION TSM 630 2 PAGE 100F 10 SERIES 123A 4123A 223A AND 4223A STEEL SERIES 127A 4127A AND 227A STAINLESS STEEL DISASSEMBLY Mark valve and head before disassembly to insure proper reassembly 1 Remove valve cap 2 Measure and record length of extension of adjusting screw Refer to A on Figure 12 page 9 and Figure 13 3 Loosen 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 if necessary ASSEMBLY Reverse procedures outlined under Disassembly If valve is removed for repairs be sure to replace
4. 18 months from the date of shipment from Viking The warranty period for Universal Seal series pumps ONLY shipped after July 1 2001 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 If during said warranty period any products sold by Viking prove to be defective in workmanship or material under normal use and service and if such products are returned to Viking s factory at Cedar Falls Iowa transportation charges prepaid and if the products are found by Viking to be defective in workmanship or material they will be replaced or repaired free of charge FOB Cedar Falls lowa Viking assumes no liability for consequential damages of any kind and the purchaser by acceptance of delivery assumes all liability for the consequences of the use or misuse of Viking products by the purchaser his employees or others Viking will assume no field expense for service or parts unless authorized by it in advance Equipment and accessories purchased by Viking from outside sources which are incorporated into any Viking product are warranted only to the extent of and by the original manufacturer s warranty or guarantee if any THIS IS VIKING S SOLE WARRANTY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED WHICH ARE HEREBY EXCLUDED INCLUDING IN PARTICULAR ALL WARRANTIES OF MERCHANTABIL
5. extension Viking suggests rotating pump shaft by hand one complete revolution every 30 days to circulate the oil SUGGESTED REPAIR TOOLS The following tools must be available to properly repair Universal Seal Bracket Pumps 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 1 Soft Headed hammer 2 Allen wrenches some mechanical seals and set collars 3 Packing hooks flexible packed pumps 4 Mechanical seal installation sleeve 2 751 005 630 for 2 4375 inch seal Q QS pumps 5 Bearing locknut spanner wrench Source 472 J H Williams amp Co or equal LS QS pumps 6 Spanner wrench adjustable pin type for use on bearing housing Source 482 J H Williams amp Co or equal Brass bar 8 Arbor press DISASSEMBLY 1 Mark head and casing before disassembly to insure proper reassembly The idler pin which is offset in pump head must be positioned toward and equal distance DANGER between port connections to allow for proper flow of ax fase liquid through the pump Before opening any Viking pump liquid Remove head from pump Do not allow idler to fall from chamber pumping chamber reservoir idler pin Tilt top of head back when removing to prevent relief valve adjusting cap fitting etc this Avoid damaging head gasket If pump is furnished Be sure with pressure relief valve it
6. fitting etc bo 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 means motor turbine engine etc has been locked out or otherwise been made nor operational so that it cannot be started while work s being done on the pump You know what material the pump has been handing have obtained a material safety data sheet MSDS for the material and understand and follow all precautions appropriate for the safe handing of the material BEFORE operating the pump be sure all drive guards aro in place DO NOT operato pump if the suction or discharge piping is not connected DO NOT place fingers into the pumping chamber oF its connection ports or into any part of the drive train if there is any possibility of the pump shafts being rotated temperature or change the systemiduty parameters from those the pump was originally supplied without WARNING confirming its suitabilty for the new service DO NOT exceed the pumps rated pressure speed and Pump rotation is correct for the desired direction offiow Warning In addition to possible serious WARNING injury or death failure to follow the WARNING A A A A indicated instruction may cause damage to pump and or other equipment INSTALL pressure ga
7. in same position Relief valve adjusting screw cap must always point towards suction side of pump If pump rotation is reversed remove relief valve and turn end for end PRESSURE ADJUSTMENT If a new spring is installed or if pressure setting of pressure relief valve is to be changed from that which the factory has set the following instructions must be carefully followed 1 Carefully remove valve cap which covers adjusting screw 2 Loosen locknut which locks adjusting screw so pressure setting will not change during operation of pump 3 Install a pressure gauge in discharge line for actual adjusting operation 4 Tur adjusting screw in to increase pressure and out to decrease pressure 5 With discharge line closed at point beyond pressure gauge and pump running gauge will show maximum pressure that the valve will allow full bypass IMPORTANT In ordering parts for pressure relief valve always give model number and serial number of pump as it appears on nameplate and name of part wanted When ordering springs be sure to give pressure setting desired IREX VIKING PUMP INC A Unit of IDEX Corporation Cedar Falls IA 50613 USA issue E SIZES LS QAND QS VIKING PUMP WARRANTY Viking warrants all products manufactured 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
8. need not be removed from head or disassembled at this point Refer to Pressure Relief Valve Instructions page 9 If pump has jacketed head plate it will separate from head when it is removed The gasket between head and jacket head plate must be totally removed Use new That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections Thatthedrivingmeans motor turbine gasket when assembling pump engine etc has been locked out 2 Remove idler and bushing assembly or made non operational so that it 3 insert length of hardwood or brass through port opening cannot be started while work is being between rotor teeth or lock coupling end or shaft to keep done on pump shaft from turning Bend up tang of lockwasher and with A a spanner wrench remove locknut and lockwasher from That you know what liquid the pump shaft hasbeenhandlingandthe precautions to safely handle the liqui 4 Loosen two selscrews in the face of the bearing housing necessary tee and remove the bearing housing assembly from the Obtain a material safety data sheet bracket Refer to Figure 5 or 6 page 5 MSDS for the liquid to be sure these Hore uta wadorsicod 5 Remove pair of half round rings under the inner spacer Preceul collar from the shaft NOTE There are no half round Failure to follow above listed rings on Q and OS size pumps precautionary measures may result
9. 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 CARTRIDGE TYPE Cartridge mechanical seals are designed so that they may be replaced with minimal pump and piping disassembly The seal may be accessed by removing the bearing housing See Disassembly Steps 3 5 page 4 1 Remove any flush or barrier fluid tubes connected to the seal gland 2 Loosen setscrews on the seal collar to free the cartridge seal from the shaft 3 Remove the two gland capscrews and slide the cartridge seal out through the bearing housing opening It the pump is to be disassembled further refer to Disassembly page 4 ELASTOMERIC BELLOWS AND PTFE WEDGE TYPE Elastomeric bellows and PTFE wedge seals generally require pump disassembly to be replaced See Disassembly steps 1 5 page 4 1 Loosen nuts and remove seal plate seal plate holder seal seat and seal gasket s 2 Loosen setscrew in set collar bellows or mechanical seal rotary member wedge NOTE Piping and or plugs will need to be removed to access selscrews The remainder of the mechanical seal may be removed
10. 4A 224AH is 4224 4224AH 226A 4225A 223A 4223A 010 250 25 427A 4127A 010 250 227A 20 4227A 5 00 124A 4124A 126A 4125A 123A 4123A 010 3410 224A 4224A a 226A 4225A 223A 4223A 015 465 at 127A 4127A 010 3 10 227A 4227A 020 620 TABLE 1 INSTALLATION OF CARBON GRAPHITE BUSHINGS When installing carbon graphite bushings extreme care must be taken to prevent breaking Carbon graphite is a brittle material and easily cracked If cracked the bushing will quickly disintegrate Using a lubricant and adding a chamfer on the bushing and the mating part will help in installation The additional precautions listed below must be followed for proper installation 1 Apress must be used for installation 2 Be certain bushing is started straight 3 Do not stop pressing operation until bushing is in proper position Starting and stopping will result in a cracked bushing 4 Check bushing for cracks after installation Carbon graphite bushings with extra interference fits are frequently furnished for high temperature operation These bushings must be installed by a shrink fit 1 Heat bracket for idler to 750 F 2 Install cool bushing with a press 3 If facilities are not available to reach 750 F temperature itis possible to install with 450 F temperature however the lower the temperature the greater the possibility of cracking the bushing
11. ANICAL 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 Viking pumps are designed for long trouble free service life under a wide variety of application conditions with a minimum of maintenance The points listed below will help provide long service life 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 require initial packing adjustment to control leakage as packing runs in Make initial adjustments carefully and do not over tighten packing gland After initial adjustment inspection will reveal need for packing replacement Refer to instructions under Assembly on page 5 regarding repacking pump CLEANING PUMP Keep pump as clean as possible This will facilitate inspection adjustment and repair work and help prevent overlooking a dirt covered grease fitting STORAGE If pump is to be stored or not used for six months or more pump must be drained and a light coat of light oil must be applied to all internal pump parts Lubricate fittings and apply grease to pump shaft
12. ITY OR FITNESS FOR A PARTICULAR PURPOSE No officer or employee of IDEX Corporation or Viking Pump Inc is authorized to alter this warranty Universal Seal Pump Models Sizes H HL K KK L LQ LL LS Q QS N and R in Series 124A 4124A 4124AE 4124B 224A 4224A 4224AE 4224B 324A 4324A 126A 4126A 226A 4226A 123A 4123A 223A 4223A 323A 4323A 127A 4127A 227A 4227A 327A and 4327A 1072008 ving Pump c lights resene
13. OUNTED PUMP Non Jackelad dacketed Packed Mech Seal Packed Pech Seal UNITS LST24A LS4124A LS224A LS4224A Unis are designated LS126A Ls4t26A LS224AH LS224AH by the unmounted Ls123A Ls4tzaA LS226A Ls4226A pump model numbers usta7a Ls4t2TA LS223A LS4223A folowed by a letter azsa Jast2aa Ls227A LS4227A indicating drive se aizea aszea azzsa as224A azsa aszaa azza as226A v v Bet azza asia Jazz as223A D Direct Connected asiza assi2a az27a asza7a R Viking Speed Qs126A ass126a asz26a as4z2sA Reducer asi as4123A as223A as42234 P Commercial Speed asi assi27a asz27a asaz27A Reducer FIGURE 3 Size QS illustrated Non Jacketed VIKING PUMP INC 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 BEFORE opening any quid chamber pumping chambar reservoir relief valve adjusting cap
14. TECHNICAL SERVICE MANUAL UNIVERSAL SEAL HEAVY DUTY PUMPS SECTION TSM 630 2 SERIES 124A 4124A 224A 224AH 4224A AND 4224AH CAST IRON SERIES 126A 4126A 226A AND 4226A DUCTILE IRON PAGE 1 OF 10 SERIES 123A 4123A 223A AND 4223ASTEEL issue E SERIES 127A 4127A 227A AND 4227A STAINLESS STEEL SIZES LS Q AND QS CONTENTS Special Information 3 Maintenance 3 Disassembly 4 Assembly 5 Mechanical Seal Replacement 6 Seal Removal 6 Seal Installation 7 Thrust Bearing Adjustment 8 Installation of Carbon Graphite Bushings 9 Pressure Relief Valve Instructions 9 Disassembly 10 Assembly 10 FIGURE 1 Pressure Adjustment 10 Size LS illustrated Shown with jacketed bracket and relief valve INTRODUCTION 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 a complete name of part part number and material with the 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 series number 124A 4124A 126A 4126A 123A 4123A 127A 4127A 224A 224AH 4224A 4224AH 226A 4226A 223A 4223A 227A 4227A indicating basic pump construction material FIGURE 2 Size Q illustrated Model Chart Number Non Jacketed UNM
15. bon graphite Refer to Installation of Carbon Graphite Bushings page 9 Coat shaft of rotor shaft assembly with light oll Start end of shaft in bracket bushing turning from right to left slowly pushing rotor in casing Coat idler pin with light oll and place idler and bushing on idler pin in head If replacing with carbon graphite bushing Refer to Installation of Carbon Graphite Bushings page 9 Using a 010 to 015 inch thick head gasket install head and idler assembly on pump Pump head and casing should have been marked before disassembly to insure proper reassembly If not be sure idler pin which is offset in pump head is positioned toward the equal distance between port connections to allow for proper flow of liquid through pump Refer to Figure 5 and 6 for bearing housing assembly Install the lipseal in the bearing housing See the appropriate figure for lip orientation LS Pumps Pack the ball bearing with grease and push or press the bearing into the bearing housing Refer to Figure 5 Q and QS Pumps Pack tapered roller bearings with grease and press or push bearings into housing with large end of inner races together It is possible to install bearings incorrectly For proper assembly see Figure 6 Install the lipseal in the end cap see appropriate figure for lip orientation Thread the end cap into the bearing housing along with outer bearing spacer collar and tighten against the bearing
16. hanged Pressure relief valves cannot be used lo 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 accoss for routine maintenance and fr inspection during operation to check for leakage and monitor pump operation This manual deals only with Series 124A 4124A 126A 4126A 123A 4123A 127A 4127A 224A 224AH 4224A 4224AH 226A 4226A 223A 4223A 227A and 4227AHeavy 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 630 Heavy Duty Bracket Mounted Pumps with Universal Seal Type Bracket SPECIAL INFORMATION DANGER Before opening any Viking pump liq chamber pumping chamber reservoir relief valve adjusting cap fitting etc Be sure 1 Thatany pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openingsorconnections 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 pump has been handling and the precautions necessary to safely liquid the handle the liquid Obtain a material safety data sheet MSDS fo
17. in 6 Remove packing gland capscrews slide packing gland serious injury or death out of stuffing box and remove packing NOTE Reference Mechanical Seal Replacement beginning on page Shen deesembing sel pump meine meng Ar TEM NAME OF PART TEM NAME OF PART TEM 1 tesa 33 Mechanical Seal EJ 2 Locwasher 338 Canridge Mechanical Seal 28 Roterand Shat Assembly 3 End Gap for Bearing Housing Ta Bracket Bushing 26 der and Busting Assembly 4 _ Bearing Spacer Cotar Outer 35 Grease Fiting 27 ier Busting 5 _ Up Seal tor Bearing Housing 2 Reqd 16 Bracket and Bushing Assembly 28 were 6 Roler Gearing 2 Rea YT Capscrew tor Bracket 29 Head 7_ Bearing Spacer Cotar nner 38 Bracket Gasket 20 Stud for Head _ Bearing Housing 39 Pies Fus 3r Nur tor Hoa 9 Packing Gand Nut 20 casing 32 nsiet Valve Gasket 30 Packing Gland Capscrew 21 Pipe Flange Gasket 35 Capscrew or aliat Valve 11 Packing Giana z2 wuctorFlangos 34 intemal Reli Valve 32 Packing 23 suctorFanges 38 Cover Piate Raiet Valve FIGURE 4 EXPLODED VIEW OF UNIVERSAL BRACKET PUMP TYPICAL 10 Carefully remove rotor and shaft to avoid damaging bracket bushing Loosen two radial setscrews in flange of bearing housing and with a spanner wrench remave the outer end cap with closure and outer bearing spacer collar Remove the double row ball bearing 2 tapered rolle
18. ng 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 12 Adjust pump end clearance as in Thrust Bearing Adjustment page 8 13 Lubricate all grease fittings with multi purpose grease NLGI 42 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 MECHANICAL SEAL REPLACEMENT This manual deals wilh the three standard types of mechanical seals supplied on Universal Bracket models 4124A 4126A 4123A 4127A 4224A 4224AH 4226A 4223A 4227A 1 Cartridge Figure 7 page 7 2 Elastomeric Bellows Figure 9 page 7 3 PTFE Wedge Figure 10 page 7 Identification of seal type is an important step towards proper maintenance For mechanical seal types not shown see the Seal Instruction Drawing SID furnished with the pump or contact a Viking representative SEAL REMOVAL DANGER Before opening any Viking pump Ii chamber pumping chamber reservoir relief valve adjusting cap fitting etc Be sure 1 Thatany pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections That the driving means motor turbine engine etc has been locked out
19. r bearings on Q and OS sizes closure and inner bearing spacer collar from the bearing housing Clean all parts thoroughly and examine for wear and damage Check lip seals 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 bearing components Make sure bearings are clean then lubricate with light oll and check for roughness Roughness can be determined by turning outer race by hand CAUTION Do not intermix inner and outer races of tapered roller bearing Q and QS sizes n 12 Casing can be checked for wear or damage while mounted on bracket Inspect bracket bushing for wear and remove if damaged or worn BALL BEARING 7 BEARING HOUSING SETSCREW SPACER COLLAR LIPSEAL nl END CAP HALF ROUND RINGS SETSCREW FIGURE 5 LS BEARING HOUSING ASSEMBLY BEARING HOUSING SETSCREW X SPACER COLLAR SPACER COLLAR SHAFT LIPSEAL END CAP sETSCREW V taperen ROLLER BEARING FIGURE 6 Q QS BEARING HOUSING ASSEMBLY ASSEMBLY d Install bracket bushing If bracket bushing has a lubrication groove install bushing with groove at 6 00 o clock position in bracket If car
20. r the liquid to be sure these precautions are understood Failure to follow above listed precautionary measures may result serious injury or death ROTATION Viking pumps operate equally well in a clockwise or counterclockwise rotation Shaft rotation determines which port is suction and which is discharge Port in area where pumping elements gear teeth come out of mesh is suction port 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 return 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 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 turn end for end 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 Service Bulletin ESB 31 SPECIAL MECH
21. rease is not recommended Start rotary member on shaft including seat collar and screws on bellows seal and ease over tapered sleeve See Figure 11 TAPERED INSTALLATION SLEEVE __ MECHANICAL SEAL ROTARY MEMBER SHAFT FIGURE 11 NOTE Some PTFE wedge seals are equipped with holding clips which compress the seal springs Remove holding clips to release springs after seal is installed on shaft Move rotary member so set screws are directly below Seal access holes on side of bracket See Figure 9 page 7 and Figure 10 Tighten all setscrews securely to shaft NOTE Be sure that the rotor and shaft are positioned against the head before tightening set screws 6 FOR O RING GASKET TYPE MECHANICAL SEAL SEAT BELLOWS SEAL Lubricate outer diameter of O ring seal gasket with oil Flush sealing faces of both rotary member and seal seat with oil and press seal seat in to bore until back unlapped face is flush with bore Install seal holder seal plate capscrews and nuts and tighten securely FOR CLAMPED IN TYPE MECHANICAL SEAL SEAT WEDGE SEAT Flush sealing faces of both rotary member and seal seat with oil and install seal seat and seat gasket over end of shaft against machined bracket face Install other seal gasket seal holder seal plate capscrews and nuts and fasten securely 7 Remove tapered installation sleeve 8 Connect flush line or vent stuffing box for seals without fl
22. t Tighten only enough to contain leakage and not to distort gland Lock cartridge seal drive collar to shaft and remove or tum centering clips out of the way so as to clear the drive collar 8 Tum shaft by hand or jog motor to check drive collar for runout ee 9 Connect flush line or vent stuffing box seals without flush line until liquid is present on start up NOTE For maximum seal life flush line should be used 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 FLUSH CONNECTION SEAL ACCESS HOLE MECHANICAL SEAL ROTARY MEMBER SEAL SEAT SEAL HOLDER SEAL PLATE U carscrew SEAL GASKET FIGURE 10 PTFE WEDGE SEAL ELASTOMERIC BELLOWS AND PTFE WEDGE TYPE For complete pump assembly instructions see Assembly page 5 1 Clean rotor shaft and seal housing bore Make sure they are free of dirt grit and scratches Gently radius leading edge of shaft diameter over which seal is to be placed NOTE Never touch mechanical seal faces with anything except clean hands or clean cloth Minute particles can scratch the seal faces and cause leakage 2 Place tapered installation sleeve on the shaft See Figure 11 Coat outside of tapered installation sleeve and inside of rotary member of the seal with a generous quantity of light oil G
23. ugesisensors next to the Pump suction and discharge connections to monitor pressures USE extreme caution when liting the pump Suitable liting devices should be used when appropriate Lifting eyes installed on the pump must be used only to lit the pump not the pump with drive andior base plato the pump is mounted on a base plate the base plate must be used for all iting purposes If slings are used for ting they must be safely and securely attached For weight of the pump alone which does not include the drive andor base plato 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 andlor drive THE PUMP must be provided with pressure protection This may be provided through a relief valve mounted directly on the pump an in line 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 relef valve must be c
24. ush line until liquid is present on start up NOTE For maximum seal life flush line should be used Refer to Assembly page 5 to complete assembly THRUST BEARING ADJUSTMENT 1 Loosen the two set screws in the outer face of the bearing housing and turn this thrust bearing assembly clockwise until it can no longer be turned by hand Back off counter clockwise until the rotor shaft can be tumed by hand with a slight noticeable drag 2 For standard end clearance back off the thrust bearing assembly the required length measured on the outside diameter of the bearing housing See Table 1 page 9 3 Tighten the two self locking type Allen set screws in the oulboard face of the bearing housing with equal force against the bracket Your pump is now set with standard end clearances and locked NOTE Be sure the shaft can rotate freely If not back off additional length on outside diameter and check again 4 High viscosity liquids required additional end clearances The amount of extra end clearance depends on the viscosity of the liquid pumped For specific recommendations consult the factory Table 1 shows the additional bearing housing adjustment required for 001 increase in end clearance TURN BRG HOUSING CCW LENGTH ON oD inch ADDITIONAL LENGTH ON 0 D BRG HOUSING FOR 001 END CL inch STANDARD END CLEARANCE inch PUMP MODEL 124A 4124A 126A 4125A 123A 4123A 005 128 22
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