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4 Starting pump

4.1 Checking for free turning

Rotate shaft by hand to be sure rotating element is free. If element rubs or binds:

1.

Check alignment

2.

Pipe loads should be removed

3.

Check impeller clearance (if external adjustment is possible) as outlined in Impeller clearance ad-
justment.

4.

If unit is equipped with leveling bolts on frame or casing foot, check to be sure that bolts are not
overtightened.

4.2 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 - ½ to 1 GPM

•

Cooling Jackets - 1 to 3 GPM

•

Mechanical Seals - ½ to 2 GPM

The cooling lines should be checked periodically to see that they have not become clogged.

4.3 Priming

The pump must always be fully primed and the suction pipe full of liquid before pump is started.

If pump is run dry, the rotating parts within the pump may seize to the stationary parts since they depend
upon the liquid being pumped for lubrication.

Several different methods of priming can be used, depending upon the type of installation and service
involved.

Vertical sump pumps, when submerged, need not be primed since the pump is filled with liquid.

NOTICE:

On glass-lined pumps, the thermal shock limit of the glass varies with the conditions of opera-
tion. do not introduce liquid to pump if temperature difference between liquid and pump is over
100°F. gradually heat pump before introducing hot liquids.

Figure 23:

When pump is installed as shown in Fig. 23, pump will prime itself. Open gate valve on suction and close
discharge gate valve. Open air vent valves until all air is expelled and water flows through openings.

4 Starting pump

28

3107 Installation, Operation and Maintenance Instructions

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Содержание Goulds Pumps 3107

Страница 1: ...Installation Operation and Maintenance Instructions 3107 ...

Страница 2: ......

Страница 3: ...22 3 1 Pump bearings 22 3 2 Driver bearings and coupling 23 3 3 Stuffing boxes 23 3 4 Connection of sealing liquid or grease lubricator packed box 25 3 5 Connection of cooling water piping 25 3 6 Connection of drain piping 26 3 7 Connection of equalizing piping 27 3 8 Impeller adjustment 27 4 Starting pump 28 4 1 Checking for free turning 28 4 2 Regulation of cooling and flushing liquids 28 4 3 Pr...

Страница 4: ... while and then quits 48 7 5 Pump takes too much power 48 7 6 Pump leaks excessively at stuffing box 48 7 7 Pump is noisy or vibrates 49 7 8 High bearing temperature 49 8 Care and Maintenance of Bearings 50 8 1 Bearing temperatures 50 8 2 Bearing inspection 50 8 3 Cleaning of bearings 50 8 4 Bearing removal 51 8 5 Ball bearing installation 51 9 Ordering of spare parts 53 9 1 Spare parts 53 9 2 Ins...

Страница 5: ...com en US Tools and Resources Litera ture or by contacting your nearest Goulds Pumps sales representative These manuals must be read and understood before installation and start up For additional information contact your nearest Goulds Pumps sales representative or visit our Web site at https www gouldspumps com 1 2 Safety warnings Specific to pumping equipment significant risks bear reinforcement...

Страница 6: ...ates a hazardous situation which if not avoided could result in death or serious injury Example Pump shall never be operated without coupling guard installed correctly CAUTION Indicates a hazardous situation which if not avoided could result in minor or moderate injury Example Throttling flow from the suction side may cause cavitation and pump damage Electrical Hazard WARNING Indicates the possibi...

Страница 7: ...NING NEVER run pump below recommended minimum flow when dry or without prime WARNING ALWAYS lock out power to the driver before performing pump maintenance WARNING NEVER operate pump without safety devices installed WARNING NEVER operate pump with discharge valve closed WARNING NEVER operate pump with suction valve closed WARNING DO NOT change service application without approval of an authorized ...

Страница 8: ...ers of the proper size and material WARNING Replace all corroded fasteners WARNING Ensure all fasteners are properly tightened and there are no missing fasten ers WARNING Startup and Operation When installing in a potentially explosive environment please ensure that the motor is properly certified WARNING Operating pump in reverse rotation may result in contact of metal parts heat generation and b...

Страница 9: ...void physical injury and or equipment damage Steel toed shoes must be worn at all times WARNING The pump may handle hazardous and or toxic fluids Observe proper decon tamination procedures Proper personal protective equipment should be worn Precautions must be taken to prevent physical injury Pumpage must be han dled and disposed of in conformance with applicable environmental regula tions WARNING...

Страница 10: ...lectrical equipment installed in Europe ATEX deals with the control of potentially explosive atmospheres and the standards of equipment and protective systems used within these atmospheres The relevance of the ATEX re quirements is not limited to Europe You can apply these guidelines to equipment installed in any poten tially explosive atmosphere Guidelines for compliance Compliance is fulfilled o...

Страница 11: ...the specified area where the equipment will be installed If it is not do not operate the equipment and contact your ITT Goulds Pumps sales representative before proceeding The code classification marked on the equipment must be in accordance with the specified area where the equipment will be installed If it is not do not operate the equipment and contact your ITT Goulds Pumps sales representative...

Страница 12: ...cation of preservatives after installation is considered good practice The driver and coupling manufacturers should be contacted for recommendations on preservations and protection procedures It is considered good practice to rotate the shaft on pumps which contain ball or roller bearings approxi mately 30 every few weeks Uncrating Care should be taken when uncrating pumps If shipment is not deliv...

Страница 13: ...nd float controls Check all bolts and nuts on the entire unit to make sure they are securely tight ened Connect float and controls as shown on 6 4 Sectional View and Parts List on page 41 Installation must be done with care to avoid damage and ensure proper operation It is recommended that a man be stationed inside the pit whenever possible to assist in the initial installation Lower the assembled...

Страница 14: ...ve should be 2 3 times the bolt diameter Place a washer between the bolt head and sleeve to hold bolts See Fig 3 Figure 3 Stuff waste around bolts to prevent concrete from entering between bolt and sleeve Bolts should be of sufficient length so that they project through the nuts approximately after allowance has been made for grouting bedplate thickness and nut thickness 3 Put the unit in place on...

Страница 15: ...rance Allow grout to harden at least 48 hours 8 Tighten foundation bolts 9 Tighten pump hold down bolts 2 6 Alignment procedures General Alignment of the pump and driver is of extreme importance for trouble free mechanical operation The following are suggested steps to establish the initial alignment of the unit NOTICE This is an initial alignment The final alignment is done after the unit has bee...

Страница 16: ...hin shim stock than the pump shaft due to differences in expansion rates Pump expansion rates vary with pump design The following is a suggested cold setting for motor driven units Frame mounted units Figure 6 Frame mounted units Pumpage Temperature Above Ambient Temperature Set Above Ambient Motor Temperature Shaft Ambient 004 006 Low 100 F 002 004 Low 200 F 000 002 Low 300 F 000 002 High Pedesta...

Страница 17: ...rests evenly on both halves See Fig 9 Figure 9 Flexible couplings 2 Spider Insert Couplings Place a straight edge across both coupling hubs at four points 90 apart The unit will be in paral lel alignment when the straight edge rests evenly on both halves See Fig 9 3 Flexible Spacer Couplings Place a dial indicator on one hub and rotate that hub 360 while taking readings on the outside diameter of ...

Страница 18: ...nce of the hubs When the gap is identical within 002 the unit is in angular align ment See Fig 11 Figure 11 2 Spider Insert Couplings The normal gap distance between hub and insert is approximately 1 16 However the coupling manufacturer s instructions should be followed Check alignment by using calipers at 90 inter vals on the circumference on the outer end of hubs When caliper measurements are id...

Страница 19: ...hardened and the foun dation bolts as well as driver and pump hold down bolts have been tightened 4 When handling liquids at elevated temperatures it is suggested that expansion loops or joints be properly installed in suction and or discharge lines so that linear expansion of the piping will not draw the pump out of alignment If such expansion loops or joints are not used the forces and moments d...

Страница 20: ... elbow must be used in other than a vertical position it is permissible only providing there is a minimum of two diameters of straight pipe between the elbow and pump suction flange Figure 15 2 The suction pipe should never 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 Reducer...

Страница 21: ...Figure 17 Suction piping design for large pumps Large units taking their suction supply from sumps require special attention A properly designed sump is a must The larger the unit the more important these considerations become A 3000 GPM pump should be considered a large unit The following sketches will show the preferred pipe arrangement within the sump Pipe should be located near the back wall o...

Страница 22: ...ope upwards from source of supply 3 No portion of piping should extend above the pump suction nozzle 4 All joints must be air tight Installations with pump below source of supply suction head or flooded suction 1 A gate valve should be installed in the suction line to permit closing of the line for pump inspec tion and maintenance 2 Keep suction pipe free from air pockets 3 Piping should be level ...

Страница 23: ...mps use gaskets which are suitable for the flanges PTFE envelope style is recommended 2 11 Rotation Serious damage may result if pump is run in wrong direction Before coupling is connected the motor should be wired and the direction of rotation checked The direction of rotation is marked on the pump Make sure driver rotates in the same direction 2 12 Connection of coupling Connect coupling Follow ...

Страница 24: ...eservoir in bearing housing is filled when an oil level remains in the bottle Several fillings of bottle will be required Never fill through the oil vent or through the oiler without use of the bottle Grease lubrication Grease lubricated pumps can be identified by the grease fittings located on the bearing housing Suffi cient lubricant is inserted at the factory for 2 000 hours of operation Do not...

Страница 25: ... When packing the stuffing box refer to 6 4 Sectional View and Parts List on page 41 for the arrangement of packing rings and lantern ring Depending upon the particular pump and or application the lantern ring may be in the middle or bottom of the stuffing box incorporated in another part or not used at all Some packing rings are die formed and special care must be taken during installation To ins...

Страница 26: ...te method of removing packing is to remove the up per half casing Refer to 6 3 Disassembly of pump on page 37 Remove packing and lantern ring and inspect sleeves If deeply grooved sleeves should be replaced Mechanical seals When mechanical seals are furnished the description and identification is indicated on the order write ups which are a part of the order acknowledgement dimension print and the...

Страница 27: ...Sealing liquid or grease lubricator is required when 1 Abrasive particles in the pumpage could score the shaft or sleeve 2 Stuffing box pressure may be below atmospheric pressure due to pump running with suction lift or when suction source is under vacuum Under these conditions the packing will not be cooled Sealing liquid Sealing liquid may be supplied by recirculation of pumpage through a line f...

Страница 28: ...ods which may be used to cool the seal are 1 Dead Ended Seal Chamber No liquid is circulated through the stuffing box The isolated or dead ended liquid around the seal is cooled by circulating water in the stuffing box jacket if any 2 Cool Liquid Flushing External Source A clean cool compatible liquid is injected from an outside source directly into the seal chamber The flushing liquid must be at ...

Страница 29: ...tuffing box 3 8 Impeller adjustment Some end suction pumps in addition to vertical pumps have means of adjusting impeller clearance with in the casing The clearance was set at the factory but in transit the clearance may have been lost Proper clearance must be attained before a pump is operated or serious damage may occur Check and reset impeller clearance by method described in Impeller clearance...

Страница 30: ...g The pump must always be fully primed and the suction pipe full of liquid before pump is started If pump is run dry the rotating parts within the pump may seize to the stationary parts since they depend upon the liquid being pumped for lubrication Several different methods of priming can be used depending upon the type of installation and service involved Vertical sump pumps when submerged need n...

Страница 31: ...elled and water issues from vent openings Close air vent valves close valve in priming supply line and start pump then open discharge gate valve Figure 24 2 By Separate Hand or Manually Controlled Priming Pump Close discharge gate valve keep air vent valves closed and open valve in line to priming pump Exhaust air from pump and suction piping until water flows from priming pump With priming pump r...

Страница 32: ...pressure in the discharge line The original prime must be effected from some outside source After subsequent idle periods open air vent valves and open valve in bypass line around discharge check and gate valves until liquid flows from air vent openings Close air vent valves and bypass valve start pump and open discharge gate valve Figure 26 Priming by ejection On suction lift installation an ejec...

Страница 33: ...ng box gland can be adjusted Draw gland nuts up evenly and only 1 6 of a turn at a time allowing sufficient time between adjustments for the packing to adjust itself and the effect on the leakage to be observed If any sign of heating is evident shut down the pump and allow the box to cool Several starts may be necessary before the box runs cool Do not back off the gland nuts on a hot box as this w...

Страница 34: ...ing the unit up to operating temperature After this warm up period has elapsed stop the unit and immediately disconnect the coupling and check the alignment On Back Pull Out end suction units the frame foot should be loosened to relieve any strain due to thermal expansion On units which have jacking bolts on the foot loosen the hold down bolts On units which have a slotted hole on the foot near th...

Страница 35: ...p into the bedplate Use a reamer with a per foot taper The dowels should extend well into the bedplate but project above the pump feet Drivers should also be doweled but the driver manufacturer should be contacted for instructions 4 6 Doweling 3107 Installation Operation and Maintenance Instructions 33 ...

Страница 36: ...p 1 above with the addition that the handle on the lubri cator should be given a tum or two about every 100 hours of operation 4 Stuffing boxes with mechanical seal This type of box requires no attention other than to make sure that the circulating lines do not become clogged 5 2 Operating at reduced capacities Do not operate a centrifugal pump at greatly reduced capacities or with discharge gate ...

Страница 37: ...head as does horsepower consumption If this condition is likely to persist ar rangements should be made either to manually or automatically throttle the discharge valve to build up head to a safe point 5 4 Operating with surge conditions in line If a pump is installed with a quick closing valve in discharge line that doses when pump is running dan gerous pressure surges may be built up that can ca...

Страница 38: ... replace in the oiler housing Oil reservoir in frame is filled when oil remains visible in the bottle Several fillings of the bottle will be required Never fill through oil vent or the oiler housing without use of the bottle 2 Grease lubrication Refer to 3 1 Pump bearings on page 22 for grease specifications Grease lubricated ball bearings are standard on the Model 3107 These units can be identifi...

Страница 39: ...upling 6 Loosen bearing frame hold down bolts and remove pump from bedplate 7 Mark coupling position on shaft and remove pump half coupling hub 8 If pump is oil lubricated remove constant level oiler and oil drain plug and drain oil Pump can now be moved to the shop for disassembly The numbers located on the following figures refer to the procedure steps 1 Loosen casing to drain Be careful if pump...

Страница 40: ...g housing assembly is removed Removal of these parts is described in Step 4 a 6 Refer to Step 3 for further instructions B PTFE bellows seal Figure 32 b 1 Loosen set screw in deflector b 2 Loosen drive collar and carefully slide rotary assembly toward bearing frame b 3 Remove impeller Threads are right hand Hold impeller by hand and use a strap or spanner wrench to unscrew shaft b 4 Remove bearing...

Страница 41: ... and deflector from shaft c 8 Remove inboard stationary seat and gaskets from stuffing box cover c 9 Refer to Step 3 for further instructions 3 Remove bearing housing bolts 4 Carefully slide shaft assembly out of bearing frame On units with outside seals make sure de flector does not bind on shaft or damage grease seal The gland rotary portion of seal drive col lar and deflector can be removed aft...

Страница 42: ...Figure 34 6 3 Disassembly of pump 40 3107 Installation Operation and Maintenance Instructions ...

Страница 43: ...ousing Cast Iron 112 1 Ball Brg Cpl End Grease Lube Steel 122 1 Shaft Steel 123 1 Deflector AISI 316 168 1 Ball Bearing Inboard Steel 184 1 Stuffing Box Cover PTFE Lined ductile iron 228 1 Frame Cast Iron 247 1 Drip Basin ACI CF8M 250 1 Gland Mechanical Seal Gould A Loy 20 351 1 Gasket Casing PTFE Envelope 6 4 Sectional View and Parts List 3107 Installation Operation and Maintenance Instructions 4...

Страница 44: ...oper size and type as specified in 6 4 Sectional View and Parts List on page 41 Construction Details 3 Oil or grease seals Replace if torn or otherwise damaged The sizes used are Inboard seal Victor 62021 W or equal Coupling end seal Victor 62000 W or equal If contamination of bearings or oil has been a problem on an oil lubricated pump reverse the position of seals so lips face outward In this po...

Страница 45: ...only place O ring in position on O D of bearing housing 5 Slide shaft assembly into bearing frame Be careful not to damage inboard oil or grease seal as shaft is pushed through On units containing a single outside seal place deflector drive collar rotary assembly and gland on shaft as it is pushed through bearing frame See Fig 37 6 Push shaft through frame until bearing housing butts against the e...

Страница 46: ...it does not cock Tighten snugly but do not over tighten Gap should be even at all points between casing and cover Bolt torque should be 18 to 20 ft lbs a 7 Adjust impeller as outlined in Impeller clearance adjustment a 8 Slide drive collar and rotating assembly until it contacts stationary seat Compress the rotating as sembly until the line of the thin metal disc which appears in the holes in the ...

Страница 47: ...alling impeller b 6 Place casing gasket in casing b 7 Bolt casing to stuffing box cover Tighten bolts on alternate sides of casing so it does not cock Tighten snugly but do not over tighten Gap should be even at all points between casing and cover Bolt torque should be 18 to 20 ft lbs b 8 Adjust impeller as outlined in Impeller clearance adjustment b 9 Slide clamping ring toward gland and compress...

Страница 48: ...oints between casing and stuffing box cover Bolt torque should be 18 to 20ft lbs c 9 Slide gland assembly gland seat and gaskets into position and tighten nuts evenly c 10 Adjust impeller as outlined in Impeller clearance adjustment c 11 After impeller adjustment rotary portion of seal will be properly positioned Using a long Allen wrench tighten set screws in rotary c 12 Tighten set screw in defl...

Страница 49: ...Pump not primed casing and suction pipe not completely filled with liquid 2 Speed too low 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 7 Air po...

Страница 50: ...e too small or long causing excessive friction loss Check with vacuum or compound gauge 7 Impeller plugged 8 Obstruction in suction or discharge line 9 Casing gaskets damaged 7 5 Pump takes too much power 1 Speed too high 2 Head lower than rating pumps too much liquid 3 Liquid heavier than anticipated Check viscosity and specific gravity When directly connected to electric motors check whether mot...

Страница 51: ... bind are loose or broken Bearings worn out Coupling misaligned 7 8 High bearing temperature Refer to 8 1 Bearing temperatures on page 50 1 Pump and driver misalignment 2 Pump capacity too low 3 Improper lubrication 4 Excessive vibration 5 Bent shaft 6 Rotating element binds 7 7 Pump is noisy or vibrates 3107 Installation Operation and Maintenance Instructions 49 ...

Страница 52: ...s Sleeve bearings should be inspected to determine if any deep scratches or gouges other than oil grooves are present The babbitted surfaces should also be free of high or low spots Unless these surfaces are completely smooth they should be replaced if they cannot be scraped in 8 3 Cleaning of bearings The life of a bearing can be drastically reduced if contaminated with even a small amount of dus...

Страница 53: ...he shaft Do not damage the end of the shaft Figure 41 2 Sleeve Bearings After the bearing shells have been removed a bearing puller such as shown in Fig 41 should be used to remove the ball bearing The puller bar must be square with the end of the shaft at all times and the puller screw should be tightened steadily to enable the bearing to slide smoothly off the shaft Do not damage the end of the ...

Страница 54: ...ed The sleeve should contact the inner race of the bearing only The bearing should be pressed or driven until it contacts shoulder x Duplex thrust bearings must be mounted in the proper position as described in 6 6 Reassembly of pump on page 42 Figure 42 8 5 Ball bearing installation 52 3107 Installation Operation and Maintenance Instructions ...

Страница 55: ...ack Pullout 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 With these parts on hand pump can be easily and quickly reconditioned by replacing the worn parts An alternate though not as desirable as ...

Страница 56: ...um of delay if the following directions are followed 1 Give Model No size of the pump and serial number These can all be obtained from the name plate 2 Write plainly the names part numbers and materials of the parts required These names and numbers should agree with those in 6 4 Sectional View and Parts List on page 41 3 Give the number of parts required 4 Give complete shipping instructions 9 2 I...

Страница 57: ...www gouldspumps com ITT Goulds Pumps Vertical Products Operation 3951 Capitol Avenue City of Industry CA 90601 1734 USA 2021 ITT Corporation The original instruction is in English All non English instructions are translations of the original instruction Form IOM 3107 en US 2021 09 ...

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