ITT Goulds Pumps 3175 Installation, Operation And Maintenance Instructions Download Page 44

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1 - Ejector

4 - Steam, compressed air, or water under pressure

2 - Valve "S"

5 - Discharge gate valve

3 - Valve "E"

Figure 45: Ejection

b) Close discharge gate valve, open valve "E" in steam, air or water pressure supply line. Open

valve "S" in suction pipe of ejector connected to pump casing. Air will be evacuated and liquid
will be drawn up into suction pipe and pump casing. When all air is evacuated, start pump,
close valve "S" and valve "E", and open discharge gate valve.

Priming by Automatic Primer Pump

a) Where there is a fluctuating suction lift that occasionally might drop below the normal limits of

the pump, or for installations where there is any quantity of air entrained in the pumpage, the
system shown below is very well adapted.

1 - To primer pump

4 - Discharge check valve

2 - Priming valve

5 - Suction pipe

3 - These lines must slope upward from pump to
eliminate pockets

Figure 46: Automatic primer pump

5.14 Priming

3175 Installation, Operation and Maintenance Instructions

Summary of Contents for Goulds Pumps 3175

Page 1: ...Installation Operation and Maintenance Instructions 3175 ...

Page 2: ......

Page 3: ... 24 4 8 Suction Piping Design for Large Pumps 27 4 8 1 Installations with Pump Above Source of Supply Suction Lift 28 4 8 2 Installations with Pump Below Source of Supply Suction Head or Flooded Suction 28 4 9 Discharge Piping 29 4 10 Connection of Piping 29 4 11 Rotation 29 4 12 Connection of Coupling 29 5 Commissioning Startup Operation and Shutdown 31 5 1 Preparation for startup 31 5 2 Pump Bea...

Page 4: ...6 1 2 Bearing Inspection 48 6 1 3 Clean the Bearings 48 6 1 4 Bearing Removal 49 6 1 5 Install the Ball Bearings 50 6 2 Lubricate the Pump 51 6 3 Impeller Clearance Adjustment 53 6 4 Disassembly precautions 55 6 5 Disassemble the Pump 56 6 6 Inspection and Overhaul 61 6 7 Reassemble the Pump 62 6 8 Set the Mechanical Seals 67 6 9 Stuffing Box 68 7 Troubleshooting 70 7 1 Troubleshooting Checklist 7...

Page 5: ...RNING Risk of serious personal injury Applying heat to impellers propellers or their retaining devices can cause trapped liquid to rapidly expand and result in a violent explosion This manual clearly identifies accepted methods for disassembling units These methods must be adhered to Never apply heat to aid in their removal unless explicitly stated in this manual The operator must be aware of the ...

Page 6: ...and or unstable operation Do not change the service application without the approval of an authorized ITT representative 1 1 2 1 Safety terminology and symbols About safety messages It is extremely important that you read understand and follow the safety messages and regulations carefully before handling the product They are published to help prevent these hazards Personal accidents and health pro...

Page 7: ...ble environmental regula tions Clean up all spills in accordance with safety and environmental procedures Report all environmental emissions to the appropriate authorities WARNING If the product has been contaminated in any way such as from toxic chemicals or nuclear radi ation do NOT send the product to ITT until it has been properly decontaminated and advise ITT of these conditions before return...

Page 8: ... that you have a clear path of retreat Make sure that the product cannot roll or fall over and injure people or damage property Make sure that the lifting equipment is in good condition Use a lifting harness a safety line and a breathing device as required Allow all system and pump components to cool before you handle them Make sure that the product has been thoroughly cleaned Disconnect and lock ...

Page 9: ...Chemicals or hazardous fluids in eyes 1 Hold your eyelids apart forcibly with your fingers 2 Rinse the eyes with eyewash or running water for at least 15 minutes 3 Seek medical attention Chemicals or hazardous fluids on skin 1 Remove contaminated clothing 2 Wash the skin with soap and water for at least 1 minute 3 Seek medical attention if necessary 1 1 2 4 Ex approved products Follow these specia...

Page 10: ...ized ITT representative 1 1 3 Product approval standards Regular standards WARNING Use of equipment unsuitable for the environment can pose risks of ignition and or explosion Ensure the pump driver and all other auxiliary components meet the required area classifica tion at the site If they are not compatible do not operate the equipment and contact an ITT representative before proceeding All stan...

Page 11: ... and repair work is done by ITT authorized personnel Genuine ITT parts are used Only Ex approved spare parts and accessories authorized by ITT are used in Ex approved prod ucts Limitations The warranty does not cover faults caused by these situations Deficient maintenance Improper installation Modifications or changes to the product and installation made without consulting ITT Incorrectly executed...

Page 12: ...Resources Literature IOMs or from your local ITT Goulds Pumps Sales representative All pumping unit pump seal coupling motor and pump accessories certified for use in an ATEX classi fied environment are identified by an ATEX tag secured to the pump or the baseplate on which it is mounted A typical tag would look like this Figure 1 ATEX nameplate The CE and the Ex designate the ATEX compliance The ...

Page 13: ... order 2 1 2 Transportation guidelines 2 1 2 1 Pump handling WARNING Dropping rolling or tipping units or applying other shock loads can cause property damage and or personal injury Ensure that the unit is properly supported and secure during lifting and handling CAUTION Risk of injury or equipment damage from use of inadequate lifting devices Ensure lifting devi ces such as chains straps forklift...

Page 14: ...g handles Lift the pump by the handles A base mounted pump Use slings under the pump casing and the drive unit or under the base rails A base mounted pump with base plate lifting lugs Use slings through the baseplate lifting lugs Examples Figure 2 Example of a proper lifting method Figure 3 Example of a proper lifting method NOTICE Do not use this method to lift a Polyshield ANSI Combo with the pu...

Page 15: ...adapter will prevent slipping of the strap and possible equipment damage 2 1 3 Storage guidelines 2 1 3 1 Pump storage requirements Storage requirements depend on the amount of time that you store the unit The normal packaging is designed only to protect the unit during shipping Length of time in storage Storage requirements Upon receipt short term less than six months Store in a covered and dry l...

Page 16: ...unit and coupling manufacturers for their long term storage procedures You can purchase long term storage treatment with the initial unit order or you can purchase it and apply it after the units are already in the field Contact your local ITT sales representative 2 1 3 2 Frostproofing Table 3 Situations when the pump is or is not frostproof Situation Condition Operating The pump is frostproof Imm...

Page 17: ...are not compatible do not operate the equipment and contact an ITT representative before proceeding Reference is made to several different types of pumps in the following text To enable the reader to asso ciate these terms to his particular unit photographs of typical units with an identifying description are shown below Figure 6 Close Coupled Figure 7 Horizontal Figure 8 Vertical 3 Product Descri...

Page 18: ...ump may be mounted horizontally or in a vertical position provided motor is above pump b The unit should be bolted to a concrete foundation or an adequately supported structure sub stantial enough to absorb any vibration and to form a permanent rigid support for the unit All units have holddown bolt holes in the motor feet and pump adapter feet Depending upon the motor frame the pump or adapter fe...

Page 19: ...cal operation 1 Coupling cover 2 Straight edge Figure 9 Coupling Alignment 8 The machined faces of the motor support and motor will provide angular alignment However any foreign material or burrs on the surface will destroy this alignment Make sure surfaces are clean and smooth 4 4 Install Horizontal Pumps Bed plate mounted units are normally mounted on a concrete foundation of liberal thickness p...

Page 20: ... 1 4 after al lowance has been made for grouting bedplate thickness and nut thickness NOTICE Remove all dirt from the mounting pads in order to ensure that the correct leveling is achieved Failure to do so can result in equipment damage or decreased performance 3 Put the unit in place on wedges The wedges should be placed at four points as shown in the image below Some long installations may requi...

Page 21: ... out under the bedplate but not so wet that sand and cement will separate Grout should be puddled continuously as it is poured to expel the air and completely fill the space under the bedplate to the level of the grout hole Strike along top of dam with trowel to give a neat finished appearance Allow grout to harden at least 48 hours 8 Tighten foundation bolts 9 Tighten pump hold down bolts 4 5 Pum...

Page 22: ...ntains a remova ble spacer piece located between coupling hubs NOTICE Note that alignment in one direction may alter alignment in another Check through each align ment procedure after making any alignment alteration 4 5 1 1 Parallel Alignment 1 Unit is in parallel misalignment when the shaft axes are parallel but not concentric Shift driver as required 2 In order to obtain vertical parallel alignm...

Page 23: ...00 F 0 305mm 0 356mm 0 012 0 014 High 260 C 500 F 0 406mm 0 457mm 0 016 0 018 High 3 To check the parallel alignment a Flexible Couplings Place a straight edge across both coupling hubs at four points 90 apart The unit will be in parallel alignment when the straight edge rests evenly on both halves See image below b Spider Insert Couplings Place a straight edge across both coupling hubs at four po...

Page 24: ...him unit as required a Flexible Couplings The normal gap distance between coupling halves is approximately 3 175mm 1 8 However the coupling manufacturer s instructions should be followed Insert a feeler or taper gauge at 90 intervals on the circumference of the hubs When the gap is identical within 0 051mm 002 the unit is in angular alignment See image below Figure 18 Angular Alignment with Flexib...

Page 25: ...luding those from the thermal expansion of the piping must not exceed the limits of the pump Risk of serious personal injury or property damage Fasteners such as bolts and nuts are critical to the safe and reliable operation of the product Ensure appropriate use of fasten ers during installation or reassembly of the unit Use fasteners of the proper size and material only Replace all corroded faste...

Page 26: ...le for the specific pump in question Such installations require extremely careful and precise attention to hot alignment procedures See 5 18 Final Alignment on page 45 5 On units handling corrosives the piping can be arranged so that corrosives can be flushed from pump prior to opening unit for service See image below During operation valves 1 and 3 would be closed 2 and 4 open Prior to dismantlin...

Page 27: ...ever be of smaller diameter than the pump suction Use of suction pipe one or two sizes larger than the pump suction with a reducer at the pump suction flange is de sirable 3 Reducers if used should be eccentric and preferably at the pump suction flange sloping side down 1 Strainer 4 Eccentric reducer 2 Foot valve if used 5 Check valve 3 Long radius elbow 6 Gate valve Figure 24 Correct Piping 4 7 G...

Page 28: ...l pump should never be throttled on the suction side 5 Suction strainers when used should have a net free area of at least three times the suction pipe area 6 Separate suction lines should be used when more than one pump is operating from the same source of supply If it is not possible to have separate lines see recommended piping arrange ment shown in the image below 1 Pump 5 Area A B min 2 Area ...

Page 29: ... the preferred pipe arrangement within the sump Pipe should be located near the back wall of the sump as shown in image below and should not be subjected to rapid changes in direction of the flow pattern Ve 1fps or less S 1 1 2 to 2D Figure 29 Recommended Pipe Arrangement Ve 2fps and up If A less than 8D Figure 30 Not Recommended Add wall thickness to centerline distance round or ogive wall ends G...

Page 30: ...nges in flow di rection should be avoided wherever possible especially near the pump suction A reducer at the pump suction flange to smoothly accelerate and stabilize flow into the pump is desirable Refer to the nearest Goulds representative for further information 4 8 1 Installations with Pump Above Source of Supply Suction Lift 1 Keep suction pipe free from air pockets See Figure 26 Incorrect Pi...

Page 31: ...e pump in reverse rotation can result in the contact of metal parts heat genera tion and breach of containment Ensure correct driver settings prior to starting any pump Failure to disconnect and lock out driver power may result in serious physical injury or death Always disconnect and lock out power to the driver before performing any installa tion or maintenance tasks Electrical connections must ...

Page 32: ... coupling guard is furnished with the unit make sure it is securely fastened WARNING The coupling guard used in an ATEX classified environment must be properly certi fied and constructed from a spark resistant material Running a pump without safety devices exposes operators to risk of serious personal injury or death Never operate a unit unless appropriate safety devices guards etc are properly in...

Page 33: ... or shaft failure and or loss of prime WARNING Risk of death serious personal injury and property damage Heat and pressure buildup can cause explosion rupture and discharge of pumpage Never operate the pump with suction and or discharge valves closed Running a pump without safety devices exposes operators to risk of serious personal in jury or death Never operate a unit unless appropriate safety d...

Page 34: ...re from sparks and heat generation Ensure bearings are properly lubricated prior to startup Oil lubricated pumps are not lubricated at the factory A high quality turbine type oil with rust and oxida tion inhibitors should be used Constant level oilers are supplied with most oil lubricated pumps They are included in the box of fittings which accompanies the pump The oiler was adjusted to maintain p...

Page 35: ...be of sodium lithium base NGLI 2 consistency Do not use graphite Further greas ing instructions are included in 6 2 Lubricate the Pump on page 51 Vertical Pump Bearings The bearing above the pump support plate is a ball bearing and is grease lubricated Follow the previous instructions for grease lubrication The pump steady bearings below the pump support plate are sleeve type and made of various m...

Page 36: ...ed at all Some packing rings are die formed and special care must be taken during installation To install twist the ring sideways just enough to get it around the shaft or sleeve Do not attempt to pull rings straight out See image below Another form of packing ring is the bulk type packing which is cut to the proper length Each piece should be placed around the shaft or sleeve and the ends of the ...

Page 37: ...ook 3 Remove lantern ring by inserting a wire hook into the ring on the outer edge 4 Clean the stuffing box 5 On horizontally split case pumps an alternate method of removing packing is to remove the upper half casing See 6 5 Disassemble the Pump on page 56 a Remove packing and lantern ring and inspect sleeves b If deeply grooved sleeves should be replaced 5 6 Mechanical Seals WARNING The mechanic...

Page 38: ...tuffing box If the pumpage is abrasive an outside source of clean compatible liquid must be used at a pressure of 30 to 50 PSI above suction pressure Grease Lubricator The grease lubricator is supplied when the use of recirculating pumpage or outside sealing liquid is not desired The grease should be insoluble in the pumpage 5 8 Connection of Cooling Water Piping Quench Gland Most pumps which cont...

Page 39: ...lated through the stuffing box water jacket if any in addition to the external flush 3 Cool Liquid Flushing Product Cooling In this arrangement pumped liquid is piped from the pump casing cooled in an external heat ex changer then injected into the seal chamber A control valve together with a rotometer and or a dial thermometer should be installed in a line from the exchanger to the seal chamber O...

Page 40: ...r casing foot then check to be sure that bolts are not overtightened 5 13 Regulation of Cooling and Flushing Liquids The supply of liquid to any cooling jackets quench glands or mechanical seals should be regulated by valves in the supply line Approximate flow rates are as follows Quench Glands to 1 GPM Cooling Jackets 1 to 3 GPM Mechanical Seals to 2 GPM The cooling lines should be checked period...

Page 41: ...t and particularly for automatic operation the safest A float switch in the suction reservoir can be arranged to stop pump should there be failure of liquid supply 2 Prime with Foot Valve With pump installed on suction lift with foot valve at end of suction line priming can be done any of the following three ways In methods 1 and 2 the pump will remain primed provided foot valve is tight Any failu...

Page 42: ...priming pump With priming pump running close valve in pri ming line start pump and open discharge gate valve An alternate method is to reverse con nections on priming pump and extending priming pump suction to source of liquid supply The pump may be primed by pumping liquid into casing until liquid comes out of the open air vent valves 1 Foot valve 4 Air vent valves 2 Priming pump 5 Discharge valv...

Page 43: ...n discharge gate valve 1 Foot valve 4 Discharge gate valve 2 Air vent valves 5 Shut off valve 3 Discharge check valve 6 By pass line Figure 44 Bypassing The valve in bypass can be left open in which event during idle periods loss through foot valve is constantly replenished from discharge line This system is used for automatic operation where idle periods are of short duration and there is no dang...

Page 44: ...ed start pump close valve S and valve E and open discharge gate valve 4 Priming by Automatic Primer Pump a Where there is a fluctuating suction lift that occasionally might drop below the normal limits of the pump or for installations where there is any quantity of air entrained in the pumpage the system shown below is very well adapted 1 To primer pump 4 Discharge check valve 2 Priming valve 5 Su...

Page 45: ... driver 3 Slowly open the discharge valve until the pump reaches the desired flow 4 Immediately check the pressure gauge to ensure that the pump quickly reaches the correct dis charge pressure 5 If the pump fails to reach the correct pressure perform these steps a Stop the driver b Restart the driver 6 Monitor the pump while it is operating a Check the pump for bearing temperature excessive vibrat...

Page 46: ...of the pump Ensure net positive suction head available NPSHA always exceeds NPSH required NPSH3 as shown on the published performance curve of the pump Operation under freezing conditions NOTICE Do not expose an idle pump to freezing conditions Drain all liquid that will freeze that is inside the pump and any auxiliary equipment Failure to do so can cause liquid to freeze and damage the pump Note ...

Page 47: ...nder actual operating con ditions for a sufficient length of time to bring the unit up to operating temperature 2 After this warm up period has elapsed stop the unit and immediately disconnect the coupling and check the alignment a On Back Pull Out end suction units the frame foot should be loosened to relieve any strain due to thermal expansion b On units which have jacking bolts on the foot loos...

Page 48: ...e can be shut off for a short period and the amount of leakage determined as in step 1 above 2 In no instance should the gland be drawn up tight Never throttle the clean liquid supply into the stuffing box as a substitute for proper adjustment of packing a steady flow from the seal cage into the pump is required to prevent entrance of pumpage into the packing 3 Stuffing boxes with packing rings wi...

Page 49: ... side 5 22 Operating at Reduced Head On motor driven pumps when discharge head or pressure is allowed to drop considerably below the rat ed point for any length of time the motor should be watched for heating because the pump capacity in creases with reduced head as does horsepower consumption If this condition is likely to persist ar rangements should be made either to manually or automatically t...

Page 50: ...pection Ball and Roller Bearings Ball and roller bearings can be checked for visible wear by slowly turning the races and watching for pits or worn areas on the balls rollers or raceways The bearings can also be inspected by hold ing the inner race and spinning the outer race If any rasping noises are emitted or the bearing catches it should be replaced If any wear on the races is apparent replace...

Page 51: ...when using a bearing heater 1 Ball Bearings a A puller such as the one shown below should be used The puller bar must be square with the end of the shaft at all times in order to keep even pressure on the outer circumference of the bearing Figure 47 Bearing puller b The puller screw should be tightened steadily to enable the bearing to slide smoothly off the shaft On some units the bearing housing...

Page 52: ... methods used to install bearings The recommended method is to use an induction heater that heats as well as demagnetizes the bearings Failure to use this method may result in equipment damage 1 A film of clean machine oil should be applied to the bearing seat on the shaft 2 The bearing should be started on the shaft by tapping the inner race with a hammer or mallet Do not use a lead mall The bear...

Page 53: ...ructions i Remove adjustment assembly from oiler ii Adjust bars to 9 16 iii Lock in position iv Replace adjustment assembly in oiler b Install oiler on either side near oil level groove marked on frame c Fill the oiler bottle with oil and replace in the oiler housing Oil reservoir in bearing frame is filled when oil remains visible in the bottle Several fillings of the bottle will be required Neve...

Page 54: ...ment damage or decreased performance Never mix greases of different consistencies NLGI 1 or 3 with NLGI 2 or with different thickeners For example nev er mix a lithium based grease with a polyurea based grease If it is necessary to change the grease type or consistency remove the rotor and old grease from the hous ing before regreasing Figure 51 Grease lubricated bearings a For oil lubrication bot...

Page 55: ...rs performance can be restored by adjusting the impeller If performance cannot be restored by adjustment pump should be disassembled as directed in 6 5 Disas semble the Pump on page 56 and the impeller and casing inspected for wear Either a feeler gauge or a dial indicator can be used to set the impeller clearance Feeler Gauge Method 1 Loosen adjustment bolts and nuts 371A 423B 2 Tighten bolts 370...

Page 56: ...indicator so that the button rests against the end of the shaft or against the front of the face of the coupling and set indicator at zero 5 Loosen bolts 370C about 6 flats 6 Be sure that jam nuts on the bolts 371A 423B are loose Tighten bolts 371A 423B a flat at a time until the dial indicator shows that the shaft has moved 0 38mm 0 015 7 Tighten bolts 370C then check to be sure all bolts 371A 42...

Page 57: ...ult in a violent explosion This manual clearly identifies accepted methods for disassembling units These methods must be adhered to Never apply heat to aid in their removal unless explicitly stated in this manual Handling heavy equipment poses a crush hazard Use caution during handling and wear appropriate Personal Protective Equipment PPE such as steel toed shoes gloves etc at all times Precautio...

Page 58: ...plete back pull out assembly bearing frame and rotating element to be removed without disturbing suction or discharge piping or driver The 8 3 Parts List on page 74 contains a complete sectional view of the pump and parts list with the proper identification numbers Refer to this section as required during maintenance procedures and when ordering spare or repair parts To prepare pump for disassembl...

Page 59: ...vailable to the side of the bedplate the pull out assembly can be turned per pendicular to the bedplate Replace one pedestal hold down bolt in bedplate and support the bear ing frame flange with blocks Complete disassembly of the pull out assembly can be accomplish ed on the job site If preferred it can be removed to an available work area 6 Remove casing gasket Figure 55 Pull out assembly 7 Remov...

Page 60: ...unit has mechanical seal remove gland stud nuts The gland is a solid ring and cannot be re moved after unbolting Carefully slide the gland off the gland studs and move back on shaft and shaft sleeve Avoid contact with exposed lapped seal faces and keep them clean Figure 57 Removal of gland stud nuts and gland 10 Remove the adapter to stuffing box bolts Pull the stuffing box cover from the frame ad...

Page 61: ...6 Remove the suction sideplate by tightening the jacking screws evenly Be sure not to damage the sideplate O ring Remove the sideplate tocasing gasket To complete disassembly of the power end proceed as follows 17 Remove the bolts which hold the frame adapter to the bearing frame Remove the frame adapter 18 Remove the deflector from the shaft 19 Remove the bolts which hold the inboard bearing end ...

Page 62: ...g using a bearing puller as shown in 6 1 4 Bearing Removal on page 49 Care must be taken to prevent damage to bearing Never use a hammer to drive shaft through bearing Protect bearing from contamination 24 Remove the bolts which hold the bearing end cover to the bearing housing Remove the bearing end cover Be sure shaft is free of burrs so the oil seal will not be damaged Figure 61 Bolt removal 6 ...

Page 63: ...ON Risk of physical injury from sharp edges Wear heavy work gloves when handling impellers Replace if impeller shows excessive erosion especially on ejector vanes on back side of impeller cor rosion extreme wear or vane breakage O ring groove and impeller hub must be in good condition Im peller has a push fit on shaft 0 000mm to 0 038mm 0 000 to 0 0015 loose Check impeller balance Sideplate To mai...

Page 64: ...uction Details in 8 3 Parts List on page 74 New bearings should not be unwrapped until ready for use Oil Seals Inspect and replace if torn or otherwise damaged The sizes are Table 4 Coupling end Group Vendor Vendor Part No S Crane 237 325 16 M Chicago Rawhide 31177 L Crane 412 525 16 Table 5 Inboard Group Vendor Vendor Part No S Crane 250 325 12 M Chicago Rawhide 33041 L Garlock 53 X 2687 Seals ar...

Page 65: ...ng with slot Do not loosen locknut to position Figure 62 Pump reassembly 4 Slide bearing housing with O ring in place over impeller end of shaft and over outboard bearing 5 Tap outboard oil seal in place on bearing end cover coupling end 6 Place bearing end cover and 0 152mm 0 006 white manila gasket over coupling end of shaft and fit into bearing housing If oil seal is dry oil lightly before slid...

Page 66: ...re than 0 203mm 0 008 If end play is less than 0 025mm 0 001 add coupling end bearing end cover gaskets made from 0 152mm 0 006 thick manila paper If end play is greater than 0 203mm 0 008 remove gaskets Because of machining tolerances duplex thrust bearings may vary in width by up to 0 762mm 0 030 A cor rectly assembled pump may require as few as one or as many as three 0 152mm 0 006 thick gasket...

Page 67: ...h mechanical seals a Before mounting any seals wipe the seal faces carefully with a clean soft doth and oil lightly with clean oil b Assemble gland stationary seat gland and seat gaskets Carefully slide assembly on sleeve c Lightly oil the rotary portion of the seal and slide on sleeve Position rotary at proper distance from end of sleeve Correct dimension is shown on the seal drawing See 6 8 Set ...

Page 68: ...tall and tighten four nuts on sideplateto casing studs 20 Tighten casing hold down bolts 21 Connect suction and discharge flanges Care should be taken to prevent excessive pump flange loading Figure 67 O ring and suction sideplate to casing gasket 22 Slide the completely assembled back pull out unit into the casing Tighten the frame adapterto casing bolts evenly to assure that gap between adapter ...

Page 69: ...ethods of packing 26 Replace auxiliary piping 27 Follow procedures outlined in this manual for preparation and operation of the unit NOTICE Pay particular attention to instructions concerning alignment and lubrication 6 8 Set the Mechanical Seals WARNING The mechanical seal used in an ATEX classified environment must be properly certified CAUTION Running a mechanical seal dry even for a few second...

Page 70: ...EX classified environment The standard stuffing box cover has four pipe taps for sealing or flushing liquid to the packing or mechan ical seal Two are used for in and out connections to the throat of the stuffing box for paper stock serv ices with the lantern ring positioned next to the stuffing box throat bushing Two are alternately used for evaporator or chemical services as in and out connectio...

Page 71: ...1 Out 2 In 3 For paper stock service 4 For process and evaporator service Figure 69 Stuffing box 6 9 Stuffing Box 3175 Installation Operation and Maintenance Instructions 69 ...

Page 72: ...ely filled with liquid 2 Speed too low 2 3 Discharge head higher than anticipated Check system head particularly friction loss 4 Suction lift too high suction pipe may be too small or long causing excessive friction loss Check with vacuum or compound gauge 5 Impeller or suction pipe or opening partially plugged 6 Wrong direction of rotation or impeller installed backwards 7 Air pocket in suction l...

Page 73: ...g pumps too much liquid 3 Liquid heavier than anticipated Check viscosity and specific gravity 4 Mechanical defects Shaft bent Rotating element binds Stuffing box too tight Impeller clearance too great 5 Wrong direction of rotation or impeller installed backwards 6 Pump leaks excessively at stuffing box 1 Packing is worn or not properly lubricated 2 Packing is incorrectly inserted or not properly ...

Page 74: ...en directly connected to electric motors check whether motor wiring is correct and receives full voltage When directly connected to steam turbines make sure that turbine receives full steam pres sure 3 When directly connected to electric motors check whether motor wiring is correct and receives full voltage When directly connected to steam turbines make sure that turbine receives full steam pres s...

Page 75: ...Pull Out End Suction Pumps 1 Back Pull Out assembly This is a group of assembled parts which includes all parts ex cept the casing and the coupling 2 Stuffing box packing if any one set 3 Stuffing box gland packing if any one set 4 Mechanical seal if any one An alternate though not as desirable as that stated above is to have on hand parts that are most likely to wear and which can be used as need...

Page 76: ...14 18 12x18 18 12x14 22 12x18 22 14x14 18 14x20 18 14x14 22 14x20 22 18x18 22 Gen eral Net wgt bronze fit ted bare pump w suction piece 850 925 105 0 110 0 152 5 170 0 155 0 160 0 172 5 180 0 190 0 205 0 200 0 235 0 212 5 280 0 4500 Min casing thickness C I bronze 1 9 16 19 3 2 21 3 2 21 3 2 23 3 2 12 1 6 11 1 6 3 4 13 1 6 7 8 7 8 15 1 6 15 1 6 31 3 2 31 3 2 1 1 16 1 1 4 Min casing thickness steel...

Page 77: ...x 3 33 4 43 4 Bear ings Coupling end Inboard pump end Bearing span MRC 7313 DB or equal MRC 313 S or equal 12 1 4 MRC 7317 DB or equal MRC 317 M or equal 11 11 16 MRC 7222 P D B or equal MRC 222 M or equal 111 8 Shaft over hang 1031 32 1113 32 111 16 1127 32 1119 32 1113 32 127 16 1129 32 127 32 115 8 129 16 1 1 7 8 1213 16 121 16 131 8 123 8 137 32 Stuffing box Bore Depth to stuffing box bushing ...

Page 78: ...Figure 70 Sectional View and Parts LIst 8 3 Parts List 76 3175 Installation Operation and Maintenance Instructions ...

Page 79: ...nd 8x14 18H 8x10 22 and 8x14 22 10x12 18 and 10x16 18 10x12 22 and 10x16 22 12x14 18 and 12x18 18 12x14 22 and 12x18 22 14x14 18 and 14x20 18 14x14 22 and 14x20 22 18x18 22 100 1 Casing 1003 11 03 31 6 100 3 110 3 101 1 Impeller 11 06 10 00 11 06 31 6 316 316 105 1 Lantern ring Glass filled PTFE S M L 106 1 set Stuffing box packing Non asbestos S M L 107 2 hal ves Stuffing box gland 11 03 10 00 11...

Page 80: ...D D E E F F G G 176 1 Suction side plate 1000 11 06 31 6 100 0 110 6 A B C D E F G H J K N O P Q P Q R 178 1 Impeller key AISI 303 S M L 184 1 Stuffing box cover 1000 11 03 AI SI 31 6 100 0 110 3 A A B A D E F D D E D G H G H G G 198 1 Impeller screw AISI 316 S S S 210 1 Gland pack ing Non asbestos S M L 241 1 Frame ped estal 1000 A A B B C D C D D E E F G G G H J 246 1 Hand hole cover 1000 11 03 ...

Page 81: ...6 white manilla pa per S M L 360A 1 Gasket bearing end cover cou pling end 006 white manilla pa per S M L 360B 1 Gasket suc tion piece to casing Non asbestos A A A B B B C C C C D D E E E E 360C 1 Gasket side plate to cas ing Non asbestos A B B C C D E E F G H J K N K N N 360D 1 Gasket hand hole cover 1 8 cloth inserted rubber S S S 360E 1 Gasket stuff ing box cover to casing Non asbestos A A B A ...

Page 82: ...M 8 20 H H M bolt suction piece to casing Steel A A A A A A B B B B B B C C C C 370N 10 H H M bolt water jacket cover Steel S S S 412 1 O ring bear ing housing Buna N S M L 412A 1 O ring shaft sleeve PTFE S M L 412B 1 O ring im peller screw PTFE S S S 412C 1 O ring suc tion sideplate Buna N A A B A B C A B B C B C B C B C C 490 1 Water jacket cover option al 1000 S S S 491 1 Gasket wa ter jacket c...

Page 83: ...0 PSI flat face steel B Bronze 1103 150 PSI flat face steel 150 PSI flat face steel D Cast iron 1003 125 PSI cast iron 125 PSI cast iron 1 American National Standards Institute formerly USASI and ASA For other materials refer to factory 8 4 Pump Selection Chart Table 11 Index and Selection Model Number and Pump Type Descri bed in Bulletin No of Sizes and Ranges Max Ca pacity G P M Max Head Feet Ma...

Page 84: ... Direct Con 725 8 3 1 1 220 150 350 150 Open A B C 3716 Cer Vit 1 1 140 140 350 100 Open Cer Vit High Temp Process 3735 HPI Centerline mounted 724 2 21 1 6 1900 900 800 600 Encl C 3736 HPI Foot mounted 724 2 21 1 6 1900 900 500 600 Encl C Stock 3135 Di agonally split cas ing 723 1 12 3 8 4000 300 200 150 Open A B C 3175 Back pull out 723 4 17 3 18 12500 320 450 275 Open A B C General Service 3655 ...

Page 85: ...V 721 7 8 8 18 15000 550 275 275 Encl A B C 3420 23 Horiz Bottom Suction 721 8 and 9 7 16 36 75000 400 275 200 Encl A B C 3450 60 Horiz Bottom Suction 721 2 3 14 16 16000 200 250 250 Encl A Vertical 3171 Ver tical Cen trifugal 726 1 21 1 8 3180 290 450 150 Open A C VIT Verti cal Tur bine 3A 1 18 4 36 20000 3000 250 Open 1 3 5 8 Table 12 Materials of Construction The table at the right shows a code...

Page 86: ...I CA15 8 316 stainless ACI CF8M 9 Gould A LOV 20 ACI CN 7 MCU 10 Other special sand cast machinable alloys such as low medium and high carbon steels ACI CF 8C 347 316 ELC monel nickel 11 ISO B and C D 12 All iron glassed E 13 Ductile iron molded in place PTFE F 14 Titanium 8 4 Pump Selection Chart 84 3175 Installation Operation and Maintenance Instructions ...

Page 87: ... and more information www gouldspumps com ITT Goulds Pumps Inc 240 Fall Street Seneca Falls NY 13148 USA 2019 ITT Inc The original instruction is in English All non English instructions are translations of the original instruction Form IOM 3175 en US 2019 12 ...

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