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To: Our Valued Customers: User safety is a major focus in the design of our products. Following the precautions outlined in this man-ual will minimize your risk of injury. ITT Goulds pumps will provide safe, trouble-free service when properly installed, maintained, and operat-ed. Safe installation, operation, and maintenance of ITT Goulds Pumps equipment are an essential end user responsibility. This Pump Safety Manual identifies specific safety risks that must be considered at all times during product life. Understanding and adhering to these safety warnings is mandatory to ensure personnel, property, and/or the environment will not be harmed. Adherence to these warnings alone, however, is not sufficient — it is anticipated that the end user will also comply with industry and corporate safety standards. Identifying and eliminating unsafe installation, operating and maintenance practices is the responsibility of all individuals involved in the installation, operation, and maintenance of industrial equipment. Please take the time to review and understand the safe installation, operation, and maintenance guide-lines outlined in this Pump Safety Manual and the Instruction, Operation, and Maintenance (IOM) man-ual. Current manuals are available at 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
Specific to pumping equipment, significant risks bear reinforcement above and beyond normal safety precautions.
WARNING: A pump is a pressure vessel with rotating parts that can be hazardous. Any pressure vessel can explode, rupture, or discharge its contents if sufficiently over pressurized causing death, personal injury, property damage, and/or damage to the environment. All necessary measures must be taken to ensure over pressurization does not occur.
WARNING: Operation of any pumping system with a blocked suction and discharge must be avoided in all cases. Operation, even for a brief period under these conditions, can cause superheating of enclosed pumpage and result in a violent explosion. All necessary measures must be taken by the end user to ensure this condition is avoided.
WARNING: The pump may handle hazardous and/or toxic fluids. Care must be taken to identify the con-tents of the pump and eliminate the possibility of exposure, particularly if hazardous and/or tox-ic. Potential hazards include, but are not limited to, high temperature, flammable, acidic, caus-tic, explosive, and other risks.
WARNING: Pumping equipment Instruction, Operation, and Maintenance manuals clearly identify accepted methods for disassembling pumping units. These methods must be adhered to. Specifically, applying heat to impellers and/or impeller retaining devices to aid in their removal is strictly for-bidden. Trapped liquid can rapidly expand and result in a violent explosion and injury.
ITT Goulds Pumps will not accept responsibility for physical injury, damage, or delays caused by a failure to observe the instructions for installation, operation, and maintenance contained in this Pump Safety Manual or the current IOM available at
Throughout this manual the words Warning, Caution, Electrical, and ATEX are used to indicate where special operator attention is required. Observe all Cautions and Warnings highlighted in the Pump Safety Manual and the IOM provided with your equipment.
WARNING: Indicates 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 possibility of electrical risks if directions are not followed. Example: Lock out driver power to prevent electric shock, accidental start-up, and physical in-jury.
ATEX: WARNING: When installed in potentially explosive atmospheres, the instructions that follow the Ex symbol must be followed. Personal injury and/or equipment damage may occur if these instructions are not followed. If there is any question regarding these requirements or if the equipment is to be modified, please contact an ITT Goulds Pumps representative before proceeding. Example: Improper impeller adjustment could cause contact between the rotating and station-ary parts, resulting in a spark and heat generation.
WARNING: A pump is a pressure vessel with rotating parts that can be hazardous. Hazardous fluids may be contained by the pump including high temperature, flammable, acidic, caustic, explosive, and other risks. Operators and maintenance personnel must realize this and follow safety measures. Personal injuries will result if procedures outlined in this manual are not followed. ITT Goulds Pumps will not accept responsibility for physical injury, damage or delays caused by a failure to observe the instructions in this manual and the IOM provided with your equip-ment.
Table 1: General Precautions WARNING NEVER APPLY HEAT TO REMOVE IMPELLER. It may explode due to trap-ped liquid. WARNING NEVER use heat to disassemble pump due to risk of explosion from tapped liquid. WARNING NEVER operate pump without coupling guard correctly installed. WARNING 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 ITT Goulds Pumps representative. WARNING Safety Apparel: • Insulated work gloves when handling hot bearings or using bearing heater • Heavy work gloves when handling parts with sharp edges, especially impellers • Safety glasses (with side shields) for eye protection • Steel-toed shoes for foot protection when handling parts, heavy tools, etc. • Other personal protective equipment to protect against hazardous/toxic fluids WARNING Receiving: Assembled pumping units and their components are heavy. Failure to properly lift and support equipment can result in serious physical injury and/or equipment damage. Lift equipment only at specifically identified lifting points or as instructed in the current IOM. Current manuals are available at or from your local ITT Goulds Pumps sales representative. Note: Lifting devices (eyebolts, slings, spreaders, etc.) must be rated, selected, and used for the entire load being lifted. WARNING Alignment: Shaft alignment procedures must be followed to prevent catastrophic failure of drive components or unintended contact of rotating parts. Follow coupling manufacturer's coupling installation and operation procedures. WARNING Before beginning any alignment procedure, make sure driver power is locked out. Failure to lock out driver power will result in serious physical injury. CAUTION Piping: Never draw piping into place by forcing at the flanged connections of the pump. This may impose dangerous strains on the unit and cause misalign-ment between pump and driver. Pipe strain will adversely effect the operation of the pump resulting in physical injury and damage to the equipment. WARNING Flanged Connections: Use only fasteners 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 breach of containment. WARNING Lock out driver power to prevent accidental start-up and physical injury. WARNING The impeller clearance setting procedure must be followed. Improperly setting the clearance or not following any of the proper procedures can result in sparks, unexpected heat generation and equipment damage. WARNING If using a cartridge mechanical seal, the centering clips must be installed and set screws loosened prior to setting impeller clearance. Failure to do so could result in sparks, heat generation, and mechanical seal damage. WARNING The coupling used in an ATEX classified environment must be properly certi-fied and must be constructed from a non-sparking material. WARNING Never operate a pump without coupling guard properly installed. Personal in-jury will occur if pump is run without coupling guard. WARNING Make sure to properly lubricate the bearings. Failure to do so may result in ex-cess heat generation, sparks, and / or premature failure. CAUTION The mechanical seal used in an ATEX classified environment must be proper-ly certified. Prior to start up, ensure all points of potential leakage of process fluid to the work environment are closed. CAUTION Never operate the pump without liquid supplied to mechanical seal. Running a mechanical seal dry, even for a few seconds, can cause seal damage and must be avoided. Physical injury can occur if mechanical seal fails. WARNING Never attempt to replace packing until the driver is properly locked out and the coupling spacer is removed. WARNING Dynamic seals are not allowed in an ATEX classified environment. WARNING DO NOT operate pump below minimum rated flows or with suction and/or dis-charge valve closed. These conditions may create an explosive hazard due to vaporization of pumpage and can quickly lead to pump failure and physical in-jury. WARNING Ensure pump is isolated from system and pressure is relieved before disas-sembling pump, removing plugs, opening vent or drain valves, or disconnect-ing piping. WARNING Shutdown, Disassembly, and Reassembly: Pump components can be heavy. Proper methods of lifting must be employed to avoid 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 Operator must be aware of pumpage and safety precautions to prevent physi-cal injury. WARNING Lock out driver power to prevent accidental startup and physical injury. CAUTION Allow all system and pump components to cool before handling them to pre-vent physical injury. CAUTION If pump is a Model NM3171, NM3196, 3198, 3298, V3298, SP3298, 4150, 4550, or 3107, there may be a risk of static electric discharge from plastic parts that are not properly grounded. If pumped fluid is non-conductive, pump should be drained and flushed with a conductive fluid under conditions that will not allow for a spark to be released to the atmosphere. WARNING Never apply heat to remove an impeller. The use of heat may cause an explo-sion due to trapped fluid, resulting in severe physical injury and property dam-age. CAUTION Wear heavy work gloves when handling impellers as sharp edges may cause physical injury. CAUTION Wear insulated gloves when using a bearing heater. Bearings will get hot and can cause physical injury. WARNING Noise: Sound pressure levels may exceed 80 dbA in operating process plants. Clear visual warnings or other indicators should be available to those entering an area with unsafe noise levels. Personnel should wear appropriate hearing pro-tection when working on or around any equipment, including pumps. Consider limiting personnel’s exposure time to noise or, where possible, enclosing equipment to reduce noise. Local law may provide specific guidance regard-ing exposure of personnel to noise and when noise exposure reduction is re-quired. WARNING Temperature: Equipment and piping surfaces may exceed 130ºF (54ºC) in operating proc-ess plants. Clear visual warnings or other indicators should alert personnel to surfaces that may reach a potentially unsafe temperature. Do not touch hot surfaces. Allow pumps operating at a high temperature to cool sufficiently be-fore performing maintenance. If touching a hot surface cannot be avoided, personnel should wear appropriate gloves, clothing, and other protective gear as necessary. Local law may provide specific guidance regarding exposure of personnel to unsafe temperatures.
Special care must be taken in potentially explosive environments to ensure that the equipment is proper-ly maintained. This includes but is not limited to: Description of Ex-Directives The Ex-directives are a specification enforced in Europe and the United Kingdom for electrical and non-electrical equipment installed in those locations. Ex-directives deal with the control of potentially explo-sive atmospheres and the standards of equipment and protective systems used within these atmos-pheres. The relevance of the Ex-requirements is not limited to Europe or the UK. You can apply these guidelines to equipment installed in any potentially explosive atmosphere. Guidelines for compliance Compliance is fulfilled only when you operate the unit within its intended use. Do not change the condi-tions of the service without the approval of an ITT representative. When you install or maintain explosion proof products, always comply with the directive and applicable standards (for example, IEC/EN 60079-14). 1. Monitoring the pump frame liquid end temperature. 2. Maintaining proper bearing lubrication. 3. Ensuring that the pump is operated in the intended hydraulic range. The Ex conformance is only applicable when the pump unit is operated within its intended use. Operat-ing, installing or maintaining the pump unit in any way that is not covered in the Instruction, Operation, and Maintenance manual (IOM) can cause serious personal injury or damage to the equipment. This in-cludes any modification to the equipment or use of parts not provided by ITT Goulds Pumps. If there is any question regarding the intended use of the equipment, please contact an ITT Goulds representative before proceeding. Current IOMs are available at or from your local ITT Goulds Pumps Sales representative. All pumping unit (pump, seal, coupling, motor and pump accessories) certified for use in an Ex classified environment, are identified by an Ex tag secured to the pump or the baseplate on which it is mounted. A typical tag would look like this: If applicable, your pump may have either a CE Ex (ATEX) tag or UKCA Ex tag affixed to the pump. See the Safety section for a description of the symbols and codes. Typical nameplate only shown below, the actual area classification may be different.
Table 2: Temperature class definitions Code Maximum permissible surface tem-perature in °C | °F Maximum permissible liquid tempera-ture in °C | °F T1 440 | 824 372 | 700 T2 290 | 554 267 | 513 T3 195 | 383 172 | 342 T4 130 | 266 107 | 225 T5 Option not available Option not available T6 Option not available Option not available * Maximum liquid temperature may be limited by the pump model and order specific options. Table 2: Temperature class definitions on page 9 is for the purpose of determining T'x' code for Ex applications with liquid temperatures exceeding 107ºC | 225ºF. 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 before proceeding.
WARNING: • Follow these special handling instructions if you have an Ex-approved unit. • The coupling guard used in an Ex classified environment must be properly certified and must be constructed from a spark resistant material. • All work on the product must be carried out by certified electricians and ITT-authorized mechanics. Special rules apply to installations in explosive atmospheres. • All users must know about the risks of electric current and the chemical and physical characteristics of the gas, the vapor, or both present in hazardous areas. • Any maintenance for Ex-approved products must conform to international and national standards. • When pumping fluids with conductivity less than 1000 ps/m follow IEC TS 60079 32-1 guidelines. • The preventive maintenance section must be adhered to in order to keep the applicable Ex classification of the equipment. Failure to follow these procedures will void the Ex clas-sification for the equipment. Bearing replacement intervals are given in the specific pump model IOM. • Do not insulate or allow the bearing housings to accumulate a dust layer as this can result in excess heat generation, sparks and premature failure. • Do not apply additional paint or coatings to the pump when in an Ex environment. Static electric discharge can be initiated when contacting or rubbing surfaces with excessive coating thickness. • Potential electrostatic charging hazard. Do not rub, clean, or blast equipment with dry cloth or dry media. • Stray electrical currents may ignite explosive atmospheres. Ensure drives are certified for variable frequency drive operation by the manufacturer. • User shall observe necessity of using a safety device, such as a flame arrestor, to prevent flame entering or leaving the pump sump, tank, or barrel when applicable. • Move equipment to a safe/non Ex environment for repairs/adjustments or use spark re-sistant tools and work methods. • All equipment being installed must be properly grounded to prevent unexpected static electric discharge. If not, a static electric discharge may occur when the pump is drained and disassembled for maintenance purposes. • All equipment being installed must be properly grounded to prevent unexpected static electric discharge. When pumping fluids with conductivity less than 1000 ps/m follow IEC TS 60079 32-1 guidelines. • Alignment procedures must be followed to prevent unintended contact of rotating parts. Follow coupling manufacturer’s installation and operation procedures. • When installing in a potentially explosive environment, ensure that the motor and acces-sories are properly certified. • The impeller clearance setting procedure must be followed. Improperly setting the clear-ance or not following any of the proper procedures can result in sparks, unexpected heat generation and equipment damage. • Service temperature in an Ex classified environment is limited to the area classification specified on the Ex tag affixed to the pump. See nameplate section and pumpage tem-perature table. • The coupling used in an Ex classified environment must be properly certified. • Bearings must be lubricated properly in order to prevent excess heat generation, sparks and premature failure. • The mechanical seal used in an Ex classified environment must be properly certified. • The mechanical seal must have an appropriate seal flush system. Failure to do so will re-sult in excess heat generation and seal failure. • Packed stuffing boxes are not allowed in an Ex-classified environment. • Dynamic seals are not allowed in an Ex-classified environment. • Pumps must be fully primed at all times during operation. • The preventive maintenance section must be adhered to in order to keep the applicable Ex classification of the equipment. Failure to follow these procedures will void the Ex clas-sification for the equipment. • Inspection intervals should be shortened appropriately if the pumpage is abrasive and/or corrosive, or if the environment is classified as potentially explosive. • Cooling systems such as those for bearing lubrication and mechanical-seal systems must be operating properly to prevent excess heat generation, sparks, and premature failure. • Rotate shaft by hand to ensure it rotates smoothly and there is no rubbing which could lead to excess heat generation, sparks and premature failure. • Flange loads from the piping system, including those from the thermal expansion of the piping, must not exceed the limits of the pump. Casing deformation can result in contact with rotating parts, which can result in excess heat generation, sparks, and premature failure. • Ensure that pump and systems are free of foreign objects before operating and that ob-jects cannot enter the pump during operation. Foreign objects in the pumpage or piping system can cause blockage of flow which can result in excess heat generation, sparks and premature failure. • Check for magnetism on the pump shaft and demagnetize the shaft if there is any detect-able magnetism. Magnetism attracts ferritic objects to the impeller, seal, and bearings which can result in excessive heat generation, sparks, and premature failure. • Leakage of process liquid may result in creation of an explosive atmosphere. Ensure the materials of the pump casing, impeller, shaft, sleeves, gaskets and seals are compatible with the process liquid. • Leakage of process liquid may result in creation of an explosive atmosphere. Follow all pump and seal assembly procedures. • A build-up of gases within the pump, sealing system, or process piping system may result in an explosive environment. Make sure the process piping system, pump and sealing system are properly vented prior to operation. • In plants or pumps with cathodic corrosion protection, a small current constantly flows through the construction. This is not permissible on the complete pump or partially-as-sembled machinery without further precautions being taken. ITT should be consulted in this context. ITT disclaims all responsibility for work done by untrained and unauthorized personnel.
The use of genuine Goulds parts will provide the safest and most reliable operation of your pump. ITT Goulds Pumps ISO certifica-tion and quality control procedures ensure the parts are manufac-tured to the highest quality and safety levels. Please contact your local Goulds representative for details on genuine Goulds parts.
This instruction manual is intended to assist those involved with the installation, operation and mainte-nance of Goulds slurry pumps. It is recommended that this manual be thoroughly reviewed prior to instal-ling or performing any work on the pump or motor.
The design, material and workmanship incorporated in the construction of Goulds slurry pumps makes them capable of giving long, trouble-free service. The life and satisfactory service of any mechanical unit, however, is enhanced and extended by periodic inspection and careful maintenance. This manual was prepared to assist operators in understanding the construction and correct methods of installing, operat-ing, and maintaining these pumps.
Goulds will not be liable for any damages or delay caused by failure to comply with the provisions of this instruction manual. This pump is not to be operated at speeds, working pressures, discharge pressures, or temperatures higher than, nor used with liquids other than stated in the original order ac-knowledgment, without written permission of Goulds Pumps, Inc.
Care should be taken when unloading pumps. If shipment is not delivered in good order and in accord-ance with the bill of lading, note the damage or shortage on both receipt and freight bill. Make any claims to the transportation company promptly.
WARNING: • Equipment that will operate in a potentially explosive environment must be installed in ac-cordance with the following instructions. • All equipment being installed must be properly grounded to prevent unexpected static electric discharge. If not, a static electric discharge may occur when the pump is drained and disassembled for maintenance purposes.
Never draw piping into place by forcing at the flanged connections of the pump. This may im-pose dangerous strains on the unit and cause misalignment between pump and driver. Pipe strain will adversely effect the operation of the pump resulting in physical injury and damage to the equipment.
CAUTION: Pump must never be throttled on suction side.
WARNING: NPSHa must always exceed NPSHr as shown on Goulds performance curves received with or-der. Reference Hydraulic Institute for NPSH and pipe friction values needed to evaluate suction piping. Short, direct suction and discharge pipelines and a minimum of elbows and fittings result in the least amount of pipe friction.
1. Excessive friction losses will cause cavitation. 2. Must be kept free of air leaks, particularly in long lines or conditions of high suction lift. 3. Flow regulating valves must not be located on suction side of the pump.
1. Excessive friction losses result in insufficient head. 2. A check valve should be located in the discharge line to protect the pump from reverse flow and excessive pressure.
The pumps are not designed to carry loads imposed by the weight of the pipeline. Suction and discharge piping must be supported near the pump, unless otherwise specified. Pumps and subbases can be de-signed to carry loads due to thermal expansion.
The foundation must be a permanent, rigid support for the subbase or floorplate. It should be an industri-ally accepted design capable of absorbing excessive vibration. Foundations are typically concrete with anchor bolts cast in to secure the pump. An anchor bolt assembly consists of a bolt and washer with a sleeve 2-½ times the diameter of the bolt. When the assembly is cast in concrete, the washer prevents the sleeve and bolt from being pulled. The sleeve I.D. provides an adjustment allowance around the bolt. A lug is generally welded on the bolt to prevent rotation when tightening. Anchor bolts should be located in the concrete by a template dimensioned from the pump installation drawing. The top of the sleeve should be temporarily sealed with waste material to prevent concrete from entering during the concrete pouring operation. A typical anchor bolt arrangement is shown in
If subbases or floorplates were directly anchored to poured concrete foundations, surface irregularities would cause distortion. Rectangular metal blocks and shims, or metal wedges having a small taper, are placed beside each anchor bolt to level the subbase or floorplate (see Figures Leveling with wedges and Leveling with blocks and shims ). The anchor bolts are then drawn tight enough to maintain position and level. To secure the shims in place and provide a level surface for the base or plate, grout is poured over the concrete foundation. A 19mm to 38mm | ¾" to 1-½" grout allowance is recommended. When subbases have cavities, grout holes are provided to fill all spaces. After the grout has hardened, permanently tight-en the anchor bolts.
When the grout has hardened and the anchor bolts are permanently secured, recheck level.
NOTICE: On large subbases/floorplates, shimming is recommended to be at 61cm | 24" spacing.
Before installing the driver onto an overhead motor mount or side-by-side base, ensure that Foundation requirements and baseplate mounting procedures sections are complete. Alignment procedures must be followed to prevent unintended contact of rotating parts. Fol-low coupling manufacturer’s installation and operation procedures. 1. Mount and fasten the pump on the pedestal spacer, foundation, or baseplate as applicable. Use appropriate hardware. 2. For a motor that is mounted overhead, install the overhead motor mount. 3. For a motor that is mounted to the side of the pump, fasten the motor slide base on the baseplate or pump. Fasten the motor slide base on the baseplate or foundation, as applicable. Use appro-priate hardware. 4. Mount the driver on the overhead motor mount or slide base, as applicable. Use appropriate hardware. 5. Install the v-belt drive bushings and sheaves. See the installation instructions from the v-belt drive manufacturer. After the v-belt drive bushings and sheaves are installed, check the sheave alignment using a straight edge as shown in the following diagram.
NOTICE: Make sure that the sheaves are properly aligned. Proper alignment is necessary to guarantee the correct power transmission and speed ratio, and ensures minimum vibration and long drive life.
1. After alignment of the sheaves, reduce the center distance between the pump and motor shafts so that the belts can be easily mounted into the sheave grooves. For... Reduce the center distance by... Overhead mounted motors Adjusting the leveling nuts Side mounted motors Adjusting the motor slide base Make sure that the center distance between the pump and motor shaft is reduced to the point where the belts can be put on the sheaves without the use of force. Never roll or pry the belts into place, as this could damage the belt cords. 2. After the belts are seated in the sheave grooves, increase the center distance between the pump and motor shafts to tension the belts. Refer to pump general arrangement drawing for center distance ranges.
Many v-belt drive manufacturers offer tension measurement tools that can aid in setting proper belt tension. Contact the v-belt drive manufacturer for more information. 3. Secure the overhead motor mount on slide base in place once the belts are properly tensioned. 4. Install the unit after installation to ensure that the belts and sheaves do not come into contact with the guard.
CAUTION: The unit must not be operated without the proper drive guard in place. Operating the unit with-out the drive guard in place could result in personal injury to operating personnel.
WARNING: Alignment procedures must be followed to prevent unintended contact of rotating parts. Follow coupling manufacturer’s installation and operation procedures.
Pumps and drivers that are received from the factory with both machines mounted on a common sub-base were accurately aligned before shipment. Because all subbases are, to some extent, flexible, facto-ry alignment may be altered during shipment and handling. After the subbase has been leveled, grouted, and secured, check the alignment. Alignment should be rechecked after the pump is fully installed and before startup. Refer to the Alignment Procedure. Disconnect coupling halves before proceeding with alignment. Check for angular and parallel alignment in the Alignment Procedure. The faces and outside diameters of the coupling halves must be square and concentric with the bores. If this condition does not exist, the Alternate Method of Alignment is recom-mended. Subbase mounted horizontal pumps may be shipped with or without drivers and gears. Be sure pump and drivers are uncoupled before installation. Level by shimming beside each anchor bolt and grout as described in Installing Pump on Foundation.
A check for angular alignment is made by inserting the taper gauge or feelers at four points between the coupling faces and comparing the distance between the faces at four points spaced around the coupling. The unit will be in angular alignment when the measurements show that the coupling faces are the same distance apart at all points Checking angular alignment.
A check for parallel alignment is made by placing a straight edge across both coupling rims at the top, bottom, and at both sides. The unit will be in parallel alignment when the straight edge rests evenly on the coupling rim at all positions. Allowance may be necessary for temperature changes and for coupling halves that are not of the same outside diameter.
NOTICE: Care must be taken to have the straight edge parallel to the axis of the shafts Checking parallel alignment. Angular and parallel misalignment are corrected by means of shims under the motor mounting feet. After each change, it is necessary to recheck the alignment of the coupling halves. Adjustment in one direction may disturb adjustments already made in another direction. It should not be necessary to adjust the shims under the pump. The permissible amount of misalignment will vary with the type of pump and driver. The manufacturer’s recommendations should be obtained and followed. When the driver is to be mounted on the subbase in the field, it is necessary to place the subbase with pump on the foundation to level the pump shaft, to check the coupling faces, the suction and discharge flanges for horizontal or vertical position, and to make any necessary corrective adjustments.
When the units are lined up cold, it may be necessary to make an allowance for the vertical rise of the driver and/or pump caused by heating. Goulds Pumps recommendations should be obtained and fol-lowed.
An approved method for putting the coupling halves in final accurate alignment is by the use of a dial indicator. Check alignment by straight edge, taper gauge or feelers as accurately as possible by the pro-cedure indicated above. Bolt the indicator to the pump half of the coupling, with the indicator button resting on the other half cou-pling periphery, set the dial to zero, and chalk mark the coupling half at the point where the button rests. For any check, top, bottom, or sides, rotate both shafts by the same amount; i.e., all readings on the dial must be made with button on the chalk mark. The readings will indicate whether the driver has to be raised or lowered or moved to either side. After each movement, check to see that coupling faces remain parallel to one another. With this method, accurate alignment of shaft centers can be obtained even where faces or outside di-ameters of the coupling halves are not square or concentric with the bores, provided all measurements for angular alignment are made between the same two points on the faces, and all measurements for parallel alignment are made between the same two points on the outside diameters. Gross deviations in squareness or concentricity, however, may cause problems due to coupling unbalance or abnormal cou-pling wear and may need to be corrected for reasons other than accomplishment of shaft alignment.
Gear type couplings are aligned in the same manner as outlined above. However, the coupling covers must be moved back out of the way and measurements made on the coupling hubs as shown Gear cou-pling alignment .
The unit should be checked periodically for alignment. If the unit does not stay in line after being properly installed, the following are possible causes: • Settling, seasoning or spring of the foundation. • Wear of the bearings. • Pipe strains distorting or shifting the machine. • Springing of the baseplate by heat from an adjacent steam pipe or from a steam turbine. • Shifting of the building structure due to variable loading or other causes. • Loose nuts or bolts on the pump or driver assembly.
Goulds pumps are prepared at the factory for shipment under covered conditions. They are protected for transport and short term covered storage. Unless otherwise specified, it is assumed the pump will be installed upon delivery. Additional protection can be provided by request.
The pump should be located in a clean, dry area free from flooding. The area should provide adequate space for maintenance and repair, considering complete disassembly and handling of equipment. The unit should be positioned to provide the most efficient pipeline system.
In the conventional stuffing box, mechanical seals and packing seal between the stationary and rotating components of the pump. Generally, a clear liquid such as water is forced through the stuffing box to lu-bricate the sealing elements. The lubricating liquid pressure must exceed the pressure of the pumpage at the stuffing box. For end suction pumps, lubricating liquid pressure should be 10-15 PSIG higher than the discharge pressure. For side and double suction pumps, lubricating liquid pressure should be 10-15 PSIG higher than the suction pressure.
NOTICE: To determine suction or discharge pressure, use gauge pressure only. The piping supplying the lubrication liquid should be fitted tightly to prevent air from entering. On suction lifts, a small quantity of air entering the pump at this point may result in loss of suction. Lubrication liquid pressure is controlled by a valve on the outlet piping. Since the liquid leaking from the stuffing box should be clear, control of the packing lubricant will vary with the condition of the packing. Increase pressure within the stuffing box by closing outlet valve. Adjustments should be slow and consis-tent with the run-in procedure for new packing. The lubricating liquid must be clean, free of grit and acid. Shaft sleeve scoring, packing destruction, and mechanical seal face damage will result from contaminated lubricant.
WARNING: Packed stuffing boxes are not allowed in an ATEX classified environment. Original equipment packing is a suitable grade for the service intended. To replace original packing, con-tact your local Goulds representative. Refer to Bill of Material and Assembly Drawing for specific packing size and configuration.
1. Stuffing box and shaft sleeve must be clean and free of grit. 2. Form packing over shaft or mandrel of same diameter. Carefully cut to packing length. Discard rings cut too short. 3. Pre-form each ring by coiling 1-½ turns. 4. To install packing rings, do not pull straight. Expand the coil as a coil spring.
5. Expand first coil as shown and insert into stuffing box. Tamp packing to stuffing box shoulder firmly with the gland. Note where the cut is positioned. 6. Install second and third coils as required by assembly drawing, staggering the cut 90º-120º. 7. Insert seal cage (lantern ring) into stuffing box, carefully noting its proper position on assembly drawing. Failure to properly locate seal cage will result in insufficient packing lubrication. Packing and shaft sleeve damage will occur.
8. After packing and seal cage are properly installed, insert gland into stuffing box. Tighten gland nuts finger-tight only. Shaft should turn freely.
NOTICE: Do not over tighten gland nuts. Packing may set permanently and require removal. Over tight-ened packing causes excessive friction between packing and sleeve, and will result in dam-aged components. A noticeable temperature increase in stuffing box would indicate insufficient lubrication. 9. Follow pump start-up procedure. Turn on stuffing box lubricating liquid and start pump. 10. A significant amount of lubricating liquid should leak from gland side of stuffing box. Operate pump for at least 15 minutes before tightening gland nuts. Make small, even gland nut adjustments to re-duce leakage. Allow adequate run-in time between adjustments. Acceptable leakage is 30-50 drops per minute. 11. Periodic maintenance is absolutely required for all packed pumps. Normal shaft run-out should be under 0.127mm | .005" to avoid pounding of stuffing box packing. With excessive shaft run-out, shaft straightening or replacement is necessary.
WARNING: • The mechanical seal used in an ATEX classified environment must be properly certified. • The mechanical seal must have an appropriate seal flush system. Failure to do so will re-sult in excess heat generation and seal failure. Most mechanical seals are installed and adjusted at the factory. Due to size and design, some installed mechanical seals are supplied with shipping retainers. Shipping retainers hold the sealing faces apart to avoid damage during transport. Shipping retainers must be removed before shaft is to be rotated. Pumps with retained seal faces will be specially marked and instructions from the seal manufacturer for retainer removal will be provided. Mechanical seals have a stationary and a rotating sealing face. Commonly, these sealing rings are of carbon and ceramic material, brittle in nature, and easily damaged. As the sealing rings seat with the operation of the pump, a compatible wear pattern develops between the mating surfaces. To disassem-ble the mechanical seal after the wear pattern is established would necessitate the replacement of the rotating and stationary sealing elements. Do not replace only one component. To ensure the life and sealing characteristics of the mechanical seal, lubricating liquid must be circulated through the stuffing box. Clear
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