2-Goulds_3316iom.pdf.pdf

Installation, Operation and Maintenance Instructions

Table of Contents 1 Safety

1.1 Important Safety Notice

1.2 Safety Warnings

1.3 Safety

1.4 General precautions

1.5 ATEX Considerations and Intended Use

1.6 Parts

2 Installation

2.1 Location

2.2 Prepare the foundation

2.3 Initial alignment

2.4 Piping - general

2.5 Install suction piping

2.6 Piping - discharge

2.7 Connection of piping

2.8 Check rotation

2.9 Connection of coupling

2.10 Connection of bearing cooling water piping

2.11 Connection of drain piping

3 Preparation for Operation

3.1 Pump bearings

3.2 Driver bearings & coupling

3.3 Stuffing boxes

3.4 Connection of equalizing piping

3.5 Connection of piping to quenching gland

3.6 Installation and connection of bearing cooling water piping

3.7 Connection of drain piping

Starting Pump

4.1 Priming

4.2 Regulation of cooling water flow

4.3 Adjustment of stuffing box gland

4.4 Alignment - final

4.5 Doweling

Operation

5.1 Stuffing box

5.2 Operating at reduced capacities

5.3 Operating at reduced head

5.4 Operating with surge conditions in line

5.5 Operating under freezing conditions

6 Trouble Check List

6.1 No water delivered

6.2 Not enough water delivered

3316 Installation, Operation and Maintenance Instructions 1

6.3 Not enough pressure

6.4 Pump works awhile and then quits

6.5 Pump takes too much power

6.6 Pump leaks excessively at stuffing box

6.7 Pump is noisy

7 Care and Maintenance

7.1 Lubrication - bearings

7.2 Lubrication - driver and coupling

7.3 Sectional view

7.4 Repacking stuffing boxes

7.5 Dismantling of pump

7.6 Sectional View

7.7 Optional Constructions

7.8 Parts List and Interchangeability Chart

7.9 Pressure & Temperature Capability

7.10 Overhaul of pump

7.11 Reassembly of pump

7.12 Changing rotation of pump in field

7.13 Emergency ball bearing replacement

7.14 Spare parts

7.15 Instructions for ordering spare parts

2 3316 Installation, Operation and Maintenance Instructions

1 Safety

1.1 Important Safety Notice

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 https://www.gouldspumps.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 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.

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.

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.

1 Safety

3316 Installation, Operation and Maintenance Instructions 3

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 http://www.gouldspumps.com/literature.

1.3 Safety

Definitions

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.

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:

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:

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.

1.3 Safety

4 3316 Installation, Operation and Maintenance Instructions

1.4 General precautions

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

3316 Installation, Operation and Maintenance Instructions 5 equipment damage. Lift equipment only at specifically identified lifting points or as instructed in the current IOM. Current manuals are available at www.gouldspumps.com/literature_ioms.html 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.

6 3316 Installation, Operation and Maintenance Instructions

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.

3316 Installation, Operation and Maintenance Instructions 7

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.

WARNING This product contains Carbon Black a chemical known to the State of Califor-nia to cause cancer. For more information go to www.P65Warnings.ca.gov

1.5 ATEX Considerations and Intended Use

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 ATEX

The ATEX directives are a specification enforced in Europe for electrical and non-electrical 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 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 and liquid end temperature.

2. Maintaining proper bearing lubrication.

3. Ensuring that the pump is operated in the intended hydraulic range.

The ATEX conformance is only applicable when the pump unit is operated within its intended use. Oper-ating, 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.

1.5 ATEX Considerations and Intended Use

8 3316 Installation, Operation and Maintenance Instructions

Current IOMs are available at https://www.gouldspumps.com/en-US/Tools-and-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 on which it is mounted. A typical tag would look like this:

Figure 1: Typical ATEX pump nameplate

Table 2: Temperature class definitions

Code Maximum permissible pumpage temperature in °C | °F

Minimum permissible pumpage temperature in °C | °F

T1 450 | 842 372 | 700

T2 300 | 572 277 | 530

T3 200 | 392 177 | 350

T4 135 | 275 113 | 235

T5 100 | 212 Option not available

T6 85 | 185 Option not available

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.

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.

1.6 Parts

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.

1.6 Parts

3316 Installation, Operation and Maintenance Instructions 9

2 Installation

2.1 Location

Pumping unit should be placed as close as practical to the source of supply. Always allow sufficient head room to remove the upper half casing of the pump and the rotating element. Floor space allotted to the pumping unit should be sufficient for inspection and maintenance.

2.2 Prepare the foundation

1. The foundation should be substantial in order to absorb any vibration and to form a permanent rigid support for the bedplate. A concrete foundation poured on a solid footing, using a one-three-five mix, of a liberal thickness to support the pumping unit is satisfactory.

2. Foundation Bolts:

a) The location and size of the foundation bolts is shown on the outline assembly drawing sup-plied for the pumping unit.

b) Each bolt should be installed with a pipe sleeve around it - to allow for adjustment. The inside sleeve diameter should be 2½ to 3 times the diameter of the bolt. Place a washer between bolt head and sleeve to hold bolt in position. Stuff waste around foundation bolts to prevent con-crete from entering between the bolt and pipe sleeve. See Figure 2: Foundation on page 10.

c) The foundation bolts should be of sufficient length so that they project through the nut approxi-mately ¼" after allowance has been made for grouting (¾" to 1½"), the thickness of the bed-plate, and the thickness of the foundation bolt nut. See Figure 2: Foundation on page 10.

Figure 2: Foundation

3. Preparing Foundation for Mounting:

Prior to setting unit upon the foundation, clean the top surface of concrete.

4. Mounting unit on foundation

a) Put the pumping unit in place on the wedges. The wedges should be placed at four points, two below the approximate center of the pump and two below the approximate center of the driver (See Figure 3: on page 11). Some installations may require additional wedges near the mid-dle of the bedplate.

b) Be sure that coupling is disconnected between pump and driver.

c) By adjustment of the wedges, bring the unit to an approximate level and provide for the proper distance above the foundation for grouting (¾" to 1½"). Plumb the suction and discharge flang-

es. By further adjustment of the wedges, bring the coupling halves into reasonable alignment.

Check by method described in Section Alignment - initial, steps 4 through 6.

d) After the wedges have been adjusted, tighten foundation bolts evenly but only finger tight.

2 Installation

10 3316 Installation, Operation and Maintenance Instructions

NOTICE:

Final tightening of foundation bolts is done after grout has set 48 hours.

Figure 3:

5. Grouting Unit on Foundation:

a) Build wood dam around foundation as shown in Figure 2: Foundation on page 10. Wet top sur-face of concrete foundation thoroughly.

b) Pour grout in hole provided in the top of the bedplate. Use of a non-shrink grout is recommend-

ed. The grout should be thin enough to flow out under the bedplate. A mixture of one part Port-land cement to three parts sharp sand may also be used. Cement grout should not be so thin that the cement will separate from the sand.

c) The 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 in the top of the bedplate.

d) With a trowel, strike along the top of the wood dam to give a neat, finished appearance at this point.

e) Allow grout to harden at least 48 hours.

2.3 Initial alignment

Alignment of the pump and driver through the flexible coupling is of extreme importance for trouble-free mechanical operation.

If the driver was mounted at the factory, the unit was in alignment before it left our assembly department.

However, in transit and subsequent handling, this factory alignment was probably destroyed; and, it is now necessary to reestablish the alignment. As directed in Foundation only approximate alignment was obtained by wedging under bedplate before grouting.

2.3 Initial alignment

3316 Installation, Operation and Maintenance Instructions 11

The following are suggested steps to establish the initial alignment of the pumping unit.

This is an initial alignment. The final alignment is done after the unit has been run under actual operating conditions. The final alignment procedure is outlined in Section 4.4 Alignment - final on page 28 and must be followed.

1. Be sure coupling halves are disconnected.

2. Tighten foundation bolts.

3. Tighten pump and driver hold-down bolts.

4. Any coupling manufacturer's instruction sheets sent with the pump should be studied and used when installing, aligning, or servicing coupling. Align coupling, following manufacturer's instructions.

If instructions are not available, the following procedure (Steps 5 and 6) may be used.

5. Check angular misalignment - shaft axes concentric but not parallel - by inserting a taper gauge or feeler at four points on the circumference of coupling halves at 90° intervals. See Figure 4: on page

12. The unit will be in angular alignment when the measurements show the coupling faces are the same distance apart at all points. The "gap" between the coupling halves should be checked at this time. This depends on the type of coupling used and this information will be found in the instructions for the specific make of coupling furnished. Adjust angular alignment and "gap" by loosening the driver hold-down bolts and shifting or shimming driver as required. Tighten driver hold-down bolts after angular alignment and correct "gap" are secured.

Figure 4:

Pumps and drivers are bedplated so that when coupling faces are positioned in accordance with the manufacturer's recommended gap, there is an overhang of approximately 1/8" from shaft ends to coupling hub faces.

2.3 Initial alignment

12 3316 Installation, Operation and Maintenance Instructions

6. Check parallel misalignment - shaft axes parallel but not concentric-by laying straight edge across both coupling rims at top, bottom and both sides. See Figure 5: on page 13.

Figure 5:

The unit will be in horizontal parallel alignment when the straight edge rests evenly on both halves of the coupling at each side.

In order to secure vertical parallel alignment under actual operating conditions, the driver shaft must be set 0.002-0.004" lower than the pump shaft to compensate for vertical expansion.

Thin shim stock should be used under the driver feet to establish parallel alignment. (In some in-stances, shims may be required under the pump feet.)

7. Bear in mind always that alignment in one direction may alter the alignment in another. Check through each alignment procedure after making any alignment alteration.

2.4 Piping - general

1. All piping must be supported independently of the pump. The piping should always "lineup" natu-rally with the pump flanges. Never draw the piping into place by use of force at the flanged suc-tion and discharge connections of the pump.

2. The piping, both suction and discharge, should be as short and direct as possible. Avoid all un-necessary elbows, bends and fittings, as they increase the friction losses in the piping. The size of pipe and fittings should be carefully selected and of sufficient size to keep the friction losses as low as practical.

3. Piping must not be connected to the pump until the grout has thoroughly hardened and the foun-dation bolts as well as driver and pump hold-down bolts have been tightened. See Section

2.7 Connection of piping on page 18.

4. When handling liquids at elevated temperatures, arrangements must be made for expansion loops or expansion joints so that the linear expansion of the pipe will not cause the pumping unit to be drawn out of alignment.

2.4 Piping - general

3316 Installation, Operation and Maintenance Instructions 13

2.5 Install suction piping

1. General - properly installed suction piping is of extreme importance for trouble-free centrifugal pump operation.

a) The suction pipe should be as large or larger than the pump suction.

b) lncreasers, if used, should be eccentric and preferably at the pump suction flange, sloping side down.

c) A centrifugal pump should never be throttled on the suction side for capacity adjustment.

d) When more than one pump is operating from the same source of supply, separate suction lines, if possible, should be used. If not possible for separate lines, piping arrangement as shown in Figure 7: on page 16 is recommended.

14 3316 Installation, Operation and Maintenance Instructions

Figure 6:

2. Installations With Pump Above Source of Supply - Suction Lift:

a) Keep suction pipe free from air pockets. See Figure 6: on page 15.

• Piping should slope upwards from source of supply.

• No portion of piping should extend above the pump suction nozzle.

b) All joints must be air tight.

c) The suction pipe should always be submerged into the source of supply as shown in Figure 8: Pipe submergence and entrance calculation on page 17.

3316 Installation, Operation and Maintenance Instructions 15

d) A foot valve should only be used if necessary for priming, or, if the pump is to be used on inter-mittent service and is required to hold its prime.

e) Suction strainers when used should have a net free area of at least three times the suction pipe area.

3. Installations With Pump Below Source of Supply - Suction Head or Flooded Suction:

a) A gate valve should be installed in the suction line to permit closing the line for pump inspection and maintenance.

b) Keep suction pipe free from air pockets.

• Piping should be level or slope gradually downward from the source of supply.

• No portion of the piping should extend below the pump suction flange.

c) The size of entrance from the supply should be no smaller than the suction pipe.

d) The suction pipe should be below the liquid surface at the source of supply as shown in Figure 8: Pipe submergence and entrance calculation on page 17.

Figure 7:

16 3316 Installation, Operation and Maintenance Instructions

Figure 8: Pipe submergence and entrance calculation

2.6 Piping - discharge

1. A gate valve and a check valve should be installed in the discharge line. The check valve should be located between the gate valve and pump to permit inspection of the check valve. The gate valve is required for priming, regulation of flow capacity and for inspection and maintenance of the pump. See Figure 6: on page 15.

2. lncreasers, if used in discharge line, should be placed between the check valve and the pump.

2.6 Piping - discharge

3316 Installation, Operation and Maintenance Instructions 17

2.7 Connection of piping

Connect suction and discharge piping. Rotate the pump shaft by hand several complete revolutions to be sure that there is no binding and that all parts are free. Recheck alignment as described in Section

2.3 Initial alignment on page 11. If the connection of the piping causes unit to be out of alignment, correct piping to relieve strain on the pump.

2.8 Check rotation

The direction of rotation is marked on the pump casing. Make sure that driver rotates in the same direc-tion. On electric motors, jog starting switch to be sure wiring is connected for correct rotation. Be sure that coupling is disconnected.

2.9 Connection of coupling

Connect coupling, following instructions for the particular make of coupling furnished. This data is sup-plied separately, giving complete instructions for connection, lubrication, alignment and maintenance.

Pumps and drivers are bedplated so that when coupling faces are positioned in accordance with the manufacturer's recommended gap, there is an overhang of approximately 1/8" from shaft ends to coupling hub faces.

2.10 Connection of bearing cooling water piping

Water cooled bearing housings are furnished when ordered (Models 3405 and 3416 only). Bearing cool-ing should be used when the liquid pumped is:

1. Model 3405 between 180° and 250°F when gland quenching is not used and between 250° and 350°F, in addition to gland quenching.

2. Model 3416 between 250° and 350°F when gland quenching is not used and between 350° and 400°F, in addition to gland quenching.

On the Model 3405 - cooling water lines should be connected to the 3/8" pipe tap openings in the bearing housing, as shown in the sectional assembly, Sectional view. The inlet line should be at the bottom, and should have a shut-off valve installed to regulate flow. See 4.2 Regulation of cooling water flow on page 27 for instructions for regulating cooling water flow.

On the Model 3416 - the cooling coils are installed as follows:

1. Refer to Figure 1, which shows the installed cooling coil.

2. Special fittings and tubing are in the box of fittings sent with the pump.

3. Remove four - ¼" plugs from bearing end covers (109 and 119) - one plug from each side of each cover. The plugged openings are those below the openings for the constant level oilers.

4. Screw ¼" pipe x ¼" O.D. tube compression fittings into each of the four openings.

5. Push each ¼" 0.D. x 9" long copper tube through one fitting until it comes out the .fitting on the other side. Center tubing so that equal lengths project from each side. Tighten nuts on compres-sion fittings.

6. Connect the ¼" pipe x ¼" O.D. tubing elbow to each end of the copper tube. This provides a ¼" pipe connection for cooling water piping.

7. Connect cooling water. The inlet line should have a shutoff valve to regulate flow.

2.7 Connection of piping

18 3316 Installation, Operation and Maintenance Instructions

2.11 Connection of drain piping

Connect overflow outlets from stuffing boxes (located in casing near pump feet) to drain, and connect overflow from bedplate (located at pump end of bedplate) to drain. All of the above overflow openings are tapped for ¾" pipe.

2.11 Connection of drain piping

3316 Installation, Operation and Maintenance Instructions 19

3 Preparation for Operation

3.1 Pump bearings

The pump bearings are flood oil lubricated, and are not lubricated at the factory.

A high quality turbine type oil, with rust and oxidation inhibitors, should be used. For the great majority of operating conditions, oil temperature will run between 50 and 180°F. In this range an oil of 300 SSU vis-cosity at 100°F. (approximately SAE 20) should be used. If oil temperature exceeds 180°F. for extended periods, use of cooling water as outlined in Section Installation and connection of bearing cooling water piping and/or use of a special high temperature oil should be considered. For extreme conditions, refer to factory or a lubrication expert for a recommendation.

The constant level oilers are in the box of fittings which accompany the pump. Oiler manufacturer's in-structions accompany the oiler. Set as illustrated below. Install the constant level oilers in the bearing end cover at each end of the pump. Do not install the oiler in the openings for the optional cooling coils, which are directly below the oiler. See, 5.3 Operating at reduced head on page 30.

Figure 9: Oiler

Fill the oiler bottle with oil, and replace in the oiler. The housing is filled when an oil level remains in the oiler bottle. More than one filling of the bottle may be required. Never fill the housing through the oiler without use of the bottle.

3.2 Driver bearings & coupling

Check to be sure the driver bearings and coupling are properly lubricated.

3.3 Stuffing boxes

Pumps are furnished with packing rings as standard. However, mechanical seals, either single or double, can be furnished on order.

1. Stuffing Boxes with Packing Rings:

a) The stuffing box packing is in the box of fittings accompanying the pump. The standard packing is John Crane "Super Seal" No. 1. "Super Seal" No. 1 is recommended for water, ammonia, mild chemicals and all general services, and is good for the maxi mum temperatures for which the pumps are rated. Packing is die formed for easy installation.

3 Preparation for Operation

20 3316 Installation, Operation and Maintenance Instructions

b) When installing the packing and the PTFE lantern ring, twist the rings sideways just enough to get them around the shaft sleeves.

Do not attempt to pull rings straight out to get them over shaft and shaft sleeve. See Figure 10: on page 21.

Figure 10:

c) Insert lantern ring (105) against stuffing box bushing (125) (2 pieces make one ring).

Notches must face one another but need not be aligned.

Figure 11: Lantern rings

d) Then insert five rings of packing for Group "S" and "M" pumps and six rings for Group "L" pumps, staggering the joints. See sectional assembly, 7.3 Sectional view on page 33. Each ring should be firmly seated before the next ring is added. Two extra rings of packing are fur-nished in each set of packing. The extra ring for each side may be added as required.

e) Insert gland packing (210) into recess in each gland half and trim off excess flush with face of each gland half.

f) Run ½"-13 UNC nuts (355) about threefourths the length of the threaded part of bolts (353) and place cupped washers (354) on gland bolts. (See Figure 12: on page 22.

g) Insert lower half gland (107) into stuffing box.

h) Insert round, flattened end of gland bolts into recess of bearing housing (134 or 166). Gland bolts do not screw into tapped holes in casing. Tapped holes in casing are for mechanical seal gland only when pumps are furnished with seals. Threaded portion of gland bolt lays on gland half.

3.3 Stuffing boxes

3316 Installation, Operation and Maintenance Instructions 21

i) Insert upper half gland into stuffing box. Place cupped washers over the bosses on the gland to hold the gland halves together.

j) Draw the gland nuts up evenly but not tight.

Figure 12:

2. Stuffing Boxes with Mechanical Seals:

When mechanical seals are furnished the description and identification is indicated on the order write ups which are part of the order acknowledgment, certified dimension print and the packing list.

Separate installation drawings which include startup and operating instructions will be found with the instruction book attached to the pump.

The seal was installed at the factory and no further adjustment is required.

Specific instructions for preparation for operation, however, must be adhered to. Note particularly the instructions pertaining to flushing, quenching, cooling and/or pressurizing. Failure to follow in-structions may cause seal damage. Consult factory or seal representative if necessary.

3.4 Connection of equalizing piping

The equalizing pipe (102) and fittings are shipped separately in the box of fittings accompanying the pump. The ends of the piping must be connected to the openings in the top of each stuffing box for equalizing the pressure on the two boxes. See 7.3 Sectional view on page 33. This piping must be used on all units, including pumps fitted with single or double mechanical seals.

3.5 Connection of piping to quenching gland

The stuffing box gland can be operated with or without quenching water. Quenching is recommended on applications where the liquid pumped is:

1. Hot water above 212°F

2. Between 250° and 350°F in addition to bearing housing cooling.

3. Volatile or toxic, in order to smother the gland leakage, which then can be piped away.

The quenching liquid must be from an outside source and should be piped with a flexible pipe, into the opening in the upper gland half and allowed to drain into chamber or pocket in lower half casing. The openings in the gland halves are tapped for ¼" pipe. A shut-off valve should be in-stalled in each quenching line.

3.4 Connection of equalizing piping

22 3316 Installation, Operation and Maintenance Instructions

3.6 Installation and connection of bearing cooling water piping Bearing cooling coils are supplied when ordered. Bearings should be cooled when the liquid pumped is:

Between 250° and 350°F, in addition to gland quenching.

The cooling coils are installed as follows:

1. Refer to 7.6 Sectional View on page 36 which shows the installed cooling coil.

2. Special fittings and tubing are in the box of fittings sent with the pump.

3. Remove four - ¼" plugs from bearing end covers (109 and 119) - one plug from each side of each cover. The plugged openings are those below the openings for the constant level oilers.

4. Screw ¼" pipe x ¼" OD tube compression fittings into each of the four openings.

5. Push each ¼" OD x 9" long copper tube through one fitting until it comes out the fitting on the other side. Center tubing so that equal lengths project from each side. Tighten nuts on compression fit-tings.

6. Connect the ¼" pipe x ¼" OD tubing elbow to each end of the copper tube. This provides a ¼" pipe connection for cooling water piping.

7. Connect cooling water. The inlet line should have a shutoff valve to regulate flow.

3.7 Connection of drain piping

Connect overflow outlets from stuffing boxes (located in casing near pump feet) to drain, and connect overflow from bedplate (located at pump end of bedplate) to drain. All of the above overflow openings are tapped for ¾" pipe.

3.6 Installation and connection of bearing cooling water piping

3316 Installation, Operation and Maintenance Instructions 23

Starting Pump

4.1 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 as they depend on the liquid being pumped for lubrication.

Several different methods of priming can be used, depending on the type of installation and service in-volved.

If the pump is being used to pump potable or drinking water, the priming line should be protect-ed against back-siphonage by the installation of a check valve and an approved type vacuum breaker.

1. Suction Supply Above Pump:

When pump is installed as shown in Figure 12, 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. Close air vent valves, start pump, open discharge gate valve, and pump will continue to be primed for any future starting.

Figure 13:

This method is the simplest 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. Priming With Foot Valve:

With pump installed on suction lift, and with foot valve at end of suction line, priming can be done any of the following three ways:

a) From Some Outside Supply see Figure 14: on page 25.

Starting Pump

24 3316 Installation, Operation and Maintenance Instructions

Figure 14:

Close discharge gate valve, open 1st stage vent valve and open valve "S" in priming supply line until all air is expelled and water issues from vent opening. Close valve "S", close 1st stage air vent valve and start pump; then open discharge gate valve.

b) By Separate Hand or Manually Controlled Priming Pump (See Figure 15: on page 25).

Figure 15:

Close discharge gate valve (keep 1st stage air vent valves closed) and open 2nd stage air vent valve (valve "S") in line to priming pump. Exhaust air from pump and suction piping until water flows from priming pump. Close valve "S", start pump and open discharge gate valve.

By reversing connections on priming pump and extending priming pump suction to source of liquid supply, centrifugal pump may be primed by pumping liquid into casing until liquid comes out of the open 1st stage air vent valve.

In either of these methods (a) and (b), the pump will remain primed, provided foot valve is tight. Any failure, however, of foot valve when pump is standing idle, will permit the pump to lose its prime.

During long idle periods, the pump can also lose its prime through leakage from stuffing boxes.

4.1 Priming

3316 Installation, Operation and Maintenance Instructions 25

c) Bypassing Around Discharge Check Valve See Figure 16: on page 26

Figure 16:

This method can be used only when there is liquid under some 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.

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 danger of exhausting all liquid from discharge line, due to a leaky foot valve. If the valve in the bypass is left open, as described above, the foot valve must be capable of withstanding static head pressure of the system.

3. Priming by Ejector, See Figure 17: on page 27:

On suction lift installations, an ejector, operated by steam, compressed air, or water under pressure, and connected to tapped opening in second stage vent valve (remove vent tubing and fitting from valve) can be used to remove air from casing and suction line, thus priming the pump.

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.

4.1 Priming

26 3316 Installation, Operation and Maintenance Instructions

Figure 17:

4. Priming by Automatic Primer Pump, See Figure 18: on page 27:

Figure 18:

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 with the liquid being pumped, the system shown in Figure 18: on page 27 is very well adapted.

A vacuum tank and a vacuum gauge can be installed near the primer pump and the vacuum switch set to automatically start or stop the primer pump according to the vacuum required to keep the sys-tem primed.

4.2 Regulation of cooling water flow

The supply of liquid to the water-cooled bearings and quenching glands should be regulated by valves in the supply line. Approximately ½ G.P.M. to each gland and 1 G.P.M. to each bearing cooling coil is suffi-cient. The cooling lines should be checked periodically to see that they have not become clogged.

4.2 Regulation of cooling water flow

3316 Installation, Operation and Maintenance Instructions 27

4.3 Adjustment of stuffing box gland

With pump running at rated speed, stuffing box glands can be adjusted. Draw gland nuts up evenly and only one-sixth 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 off the pump and allow the boxes to cool. Several starts may be necessary before the boxes run cool. Do not back off the gland nuts on a hot box as this will usually result in liquid leaking between the outer edge of the pack-ing and the stuffing box bore. It must be borne in mind that it takes newly-installed packing some time to "run in" and that during this period, frequent attention and careful adjustments are necessa-

ry. See Stuffing box for final adjustments of gland.

4.4 Alignment - final

Final alignment can only be accomplished after unit has been run under actual operating conditions for a sufficient length of time to bring the unit up to operating temperatures.

After this warm-up period has elapsed, stop the unit and immediately disconnect the coupling and check the alignment.

Follow the alignment procedure as outlined in Alignment - initial, with the exception of Step 6 which al-lows for "growth" of the parts due to temperature difference between the driver and the pump. At the op-erating temperature, the unit will be in correct horizontal and vertical parallel alignment when a straight edge rests evenly on both halves of coupling rims at four points 90° apart.

As cautioned in Alignment - initial Step 7, changing alignment in one direction may alter the alignment in another. Check through each alignment procedure after making any alignment change.

4.5 Doweling

Doweling is not required on Group "S" and "M" pumps. On these pumps, patented lock washers are fur-nished which hold the pump and driver feet securely in place.

On Group "L" pumps, the pump and driver should be doweled after installation is complete and the unit is in correct final alignment. Four #6 taper dowel pins are included in the box of fittings accompanying the pump. These pins have a taper of ¼" to the foot. The diameter at large end is .341" (approximately 11/32" ) and the recommended drill size is 9/32".

Drill through two diagonally opposite feet of the pump and driver into the bedplate. Use a reamer with a taper of ¼" to the foot. Ream out the drilled holes so that dowels extend well into the bedplate but project above the pump and driver feet.

If the operator so desires, the same size pins and method of doweling can be used on Series "S" and "M" pumps in addition to the patented lock washers.

To determine the group of a particular size pump, see interchangeability list, 7.6 Sectional View on page 36.

4.3 Adjustment of stuffing box gland

28 3316 Installation, Operation and Maintenance Instructions

Operation

5.1 Stuffing box

1. Stuffing Boxes with Packing Rings - Less Quenching Gland:

Periodically inspect stuffing box to see that there is sufficient leakage to lubricate the packing and maintain a cool box. Never draw up packing so that the stuffing box heats, as this will cause damage to both packing and sleeve. Always draw up gland nuts evenly and when pump is run-ning.

After pump has been in operation for some time and the packing has been completely run in, at least 40 to 60 drops per minute of the liquid should be allowed to trickle from the stuffing box at all times for cooling and lubricating the packing and shaft sleeve.

2. Stuffing Boxes With Packing Rings - With Quenching Gland:

The same precautions as described above apply. However, the amount of leakage through the packing cannot be so readily ascertained, due to the quenching liquid. In most cases, the valve on the quenching liquid supply line can be shut off for a short period and the amount of leakage determined as in Step 1.. In no instance should the gland be drawn up tight.

3. 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 valve closed, be-cause the energy required to drive the pump is converted into heat. If this condition exists over a long period, the temperature of the liquid in the pump may increase until the boiling point is reached. If this occurs, the rotating parts are exposed to vapor with no lubrication and they may score or even seize to the stationary parts; and furthermore, if running clearances have enlarged due to wear, seizure may not take place. Continued operation under these conditions may create an explosive hazard due to the con-fined vapor under high pressure and temperature.

To guard against possible damage, protective devices are available, such as:

1. Liquid temperature relay or thermostat which will shut-off the unit if the liquid temperature in the pump exceeds a predetermined maximum. This device guards against possible damage due to running the pump against a closed valve.

2. Constant open by-pass orifice between the pump discharge and any check or regulating valve in the discharge line. The liquid through the orifice is returned to the suction source. The amount of liquid by-passed is a function of input horsepower and the allowable temperature rise.