Xylem IMVIC R01 User Manual

INSTRUCTION MANUAL
IMVICR01
MODEL VIC
VERTICAL INDUSTRIAL TURBINE CAN PUMPS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Foreword
Foreword
This manual provides instructions for the Installation, Operation, and Maintenance of the Goulds Water Technology Vertical Industrial Turbine Type Can Pumps. This manual covers a standard product. For special options, supplemental instructions are available. This manual must be read and understood before
installation and start-up.
This instruction manual covers several different pump models. Most assembly, disassembly, and inspection procedures are the same for all the pumps. However, where there are differences, these differences will be noted within the manual. The design, materials, and workmanship incorporated in the construction of the Goulds Water Technology VIC 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 correct application, proper installation, periodic inspection, condition monitoring and careful maintenance. This instruction manual was prepared to assist operators in understanding the construction and the correct methods of installing, operating, and maintaining these pumps.
The information contained in this book is intended to assist operating personnel by providing information on the characteristics of the purchased equipment. It does not relieve the user of their responsibility of using accepted engineering practices in the installation, operation, and maintenance of this equipment.
Goulds Water Technology pumps shall not be liable for physical injury, damage, or delays caused by failure to observe the instructions for installation, operation, and maintenance contained in this manual.
Warranty is valid only when genuine Goulds Water Technology pumps parts are used.
Use of the equipment on a service other than stated in the order will nullify the warranty, unless written approval is obtained in advance from Goulds Pumps.
For information or questions not covered in this manual, contact Goulds Water Technology at (806) 743-5700.
THIS MANUAL EXPLAINS :
• Proper Installation • Pump Overhaul
• Start-up Procedures • Trouble Shooting
• Operation Procedures • Ordering Spare or Repair Parts
• Routine Maintenance
Owner’s Information
Pump Model Number:
Pump Serial Number:
Motor Model Number:
Motor Serial Number:
Dealer:
Dealer Telephone:
Purchase Date:
Installation Date:
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Table of Contents
SUBJECT PAGE
SECTION 1 – Safety ................................................................................................................................................... 4
SECTION 2 – General Information ............................................................................................................................. 4
Introduction .............................................................................................................................................................. 4
Receiving and Checking ............................................................................................................................................4
Materials and Equipment Required ...........................................................................................................................5
Storage ...................................................................................................................................................................... 5
General Description .................................................................................................................................................. 6
SECTION 3 – Installation ........................................................................................................................................... 9
Foundation / Piping ................................................................................................................................................... 9
Pump Installation .................................................................................................................................................... 10
Installing the Bowl Assembly ................................................................................................................................... 10
Installing the Column .............................................................................................................................................. 11
Installing the Discharge Head .................................................................................................................................. 12
Installing the Stuffing Box .......................................................................................................................................12
Installing the Mechanical Seal .................................................................................................................................. 13
Mechanical Seal Alignment ...................................................................................................................................... 14
Installing the Driver ................................................................................................................................................ 14
Installing the Thrust Pot ..........................................................................................................................................19
SECTION 4 – Pump Start Up and Operation ............................................................................................................ 21
SECTION 5 – Maintenance ...................................................................................................................................... 22
Preventive Maintenance Schedule ............................................................................................................................ 22
Packing Adjustment and Replacement ...................................................................................................................... 22
Thrust Pot Lubrication and Maintenance ................................................................................................................. 23
Seasonal Shutdown .................................................................................................................................................. 23
Recommended Lubricants .......................................................................................................................................24
Troubleshooting ...................................................................................................................................................... 25
SECTION 6 – Disassembly and Reassembly ..............................................................................................................27
Disassembly ............................................................................................................................................................. 27
Inspection and Reassembly ...................................................................................................................................... 28
SECTION 7 – Repair Parts ........................................................................................................................................ 30
Limited Warranty ...................................................................................................................................................... 32
3
DANGER
WARNING
CAUTION
WARNING
Hazardous voltage can shock, burn or cause death.
WARNING
CAUTION
WARNING
CAUTION
Safety Instructions – SECTION 1
TO AVOID SERIOUS OR FATAL PERSONAL INJURY OR MAJOR PROPERTY DAMAGE, READ AND FOLLOW ALL SAFETY INSTRUCTIONS IN THE MANUAL AND ON THE PUMP.
This is a SAFETY ALERT SYMBOL. When you see this symbol on the pump or in the manual, look for one of the follow­ing signal words and be alert to the poten­tial for personal injury or property damage.
Warns of hazards that WILL cause serious personal injury, death or major property damage.
Warns of hazards that CAN cause serious personal injury, death or major property damage.
Warns of hazards that CAN cause personal injury or property damage.
If equipment is to be installed in a potentially ex­plosive atmosphere and these procedures are not followed, personal injury or equipment damage from an explosion may result.
NOTICE: INDICATES SPECIAL INSTRUCTIONS WHICH ARE VERY IMPORTANT AND MUST BE FOLLOWED.
THIS MANUAL IS INTENDED TO ASSIST IN THE INSTALLATION AND OPERATION OF THIS UNIT. THOROUGHLY REVIEW ALL INSTRUCTIONS AND WARNINGS PRIOR TO PERFORMING ANY WORK ON THIS PUMP.
MAINTAIN ALL SAFETY DECALS.
Install, ground and wire according to local and National Electrical Code Requirements.
Install an all leg disconnect switch near the pump.
Disconnect and lockout electrical power before installing or servicing the pump.
Electrical supply must match motor’s nameplate specifications. Incorrect voltage can cause fire, damage motor and void the warranty.
Single phase pump motors are equipped with an automatic thermal protector, which opens the motor’s electrical circuit when an overload condition exists. This can cause the pump to start unexpectedly.
General Precautions
Personal injuries will result if procedures outlined in this manual are not followed
Electric supply MUST match pump’s nameplate specifications. Incorrect voltage
can cause fire, damage to motor and voids warranty.
Safety Apparel:
• Insulated work gloves when handling hot sand collar.
• Heavy work gloves when handling parts with sharp
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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 fluid.
Maintenance Safety:
• Always lock out power prior to any procedure.
• Ensure pump is isolated from system and the pressure is relieved before disassembling the pump, removing plugs, or disconnecting the piping.
• Use proper lifting and supporting equipment to prevent serious injury or death.
• Observe all decontamination procedures.
General Information – SECTION 2
INTRODUCTION
NOTE: The information in this manual intends to be
used as a guide only. If you are in doubt, consult your Goulds Water Technology representative for specific information about your pump.
The design, material, and workmanship incorporated in the construction of Goulds Water Technology VIC 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 correct application, proper installation, periodic inspection and careful maintenance. This instruction manual was prepared to assist operators in understanding the construction and the correct methods of installing, operating and maintaining these pumps.
Rotating components of the pump assembly must be covered with a suitable
rigid guard to prevent injury to personnel.
Improper impeller adjustment could cause contact between the rotating and stationary parts, resulting in a spark and heat generation.
Study thoroughly Sections 1 through 6 and carefully follow the instructions for installing and operating. Section 5 contains answers to troubleshooting and maintenance questions. Keep this instruction manual handy for reference.
Goulds Water Technology will not be
liable for any damages or delay caused by failure to comply with the provisions of this instruction manual.
RECEIVING AND CHECKING
The pump should be carefully supported prior to unloading from the carrier. Handle all components carefully. Inspection for damage of the shipping crate should be made prior to unpacking the pump. After unpacking, visually inspect the pump and check the following:
1. Contents of the pump assembly against the
packing list.
2. All components against damage.
3. All shafting for damage, should the crate be broken or show careless handling. All shafting must be checked for straightness.
Any shortages or damages should be immediately called to the attention of the local freight agent of the carrier by which the shipment arrived and proper notation made on the bill. This will prevent any controversy when a claim is
made and facilitate prompt and satisfactory adjustment.
MATERIALS AND EQUIPMENT REQUIRED
The material and equipment necessary for installation of the pump will vary with the size of the pump and the type of installation.
The following list of standard tools and supplies is offered only as a guide.
BULK MATERIAL
• Anti-Galling lubricant
(such as Dow Corning “MOLYKOTE”)
• Thread Compound
• Lubrication Oil
• Turbine Oil
• Grease
RIGGING EQUIPMENT
• Mobile power hoist, traveling crane or derrick.
• Drag line and blocks.
• Lifting Bail for Threaded Column.
• Elevator clamps, if unit is unassembled.
• Clevises – for use with eyebolts.
• Timbers – size, length and quantity to support long
pump parts on the floor.
• I-Beams or timbers to support pump over
installation.
HAND TOOLS
• Pipe wrenches
• Feeler gauges
• Machinist Level
• Set of mechanics tools including: files, wire brush,
pliers, wire cutters and pocket knife.
• Clean rags
• Dial indicator to assist in motor and pump
alignment.
OPTIONAL TOOLS TO FACILITATE PUMP ASSEMBLY AND DISASSEMBLY
• Taperlock driver to assist in bowl assembly and
disassembly for pumps with taper lock impellers only.
STORAGE
Goulds Water Technology carefully preserves and protects its products for shipment. However, the effective life of the preservatives applied at the factory can vary from 3 to 18 months depending on the severity of the environment in which the equipment is stored. This section provides procedures for preparation prior to storage and maintenance during storage of Goulds Water Technology pumps. These procedures are necessary
to protect the precision parts of the pumps. Specific procedures for storing motors, gear-drivers, and engines, should be obtained from the equipment manufacturer. This section is intended to be of general assistance to users of Goulds Water Technology VIC pumps. It shall not modify, amend and/or otherwise alter the scope of Goulds Water Technology VIC pumps warranty responsibilities to the purchaser in any way whatsoever.
Storage Preparation
Goulds Water Technology VIC pumps require proper preparation for storage and, regular maintenance during storage. The pump shall be considered in storage when it has been delivered to the job site and is awaiting installation.
Preferably, the storage area shall be paved, well drained and free from flooding, and be indoors whenever possible.
Weatherproof coverings used for outdoor storage shall be flame resistant type sheeting or tarpaulins. They shall be placed so as to provide good drainage and air circulation and shall be tied down to protect from wind damage.
Storage area shall be maintained in a clean condition at all times.
Pumps and/or component parts shall be placed on skids, pallets, or shoring to permit good air circulation.
Pumps and/or component parts shall be sorted so as to permit ready access for inspection and/or maintenance without excessive handling.
Pumps and/or component parts stacked during storage shall be arranged so that the racks, containers, or crates bear full weight without distortion of pumps or parts. Identification markings must be readily visible. Any cover removed for internal access shall be replaced immediately.
Pump and bowl assembly shafting shall be rotated counter clockwise, as a minimum, once a month. Shaft shall not be left in the same previous position, nor in the extreme raised or lowered lateral position. Shaft should rotate freely.
NOTE: For further information on these procedures
contact your Goulds Water Technology representative.
Recommended Storage Procedures
Controlled storage facilities should be maintained at an even temperature 10º F (6º C) or more above the dew point with relative humidity less than 50% and little or no dust. (If these requirements can not be met the pump is to be considered in uncontrolled storage.)
For uncontrolled storage periods of 6 months or less, the pump is to be inspected periodically to insure that all preservatives are intact.
All pipe threads and flanged pipe covers are to be sealed with tape.
The pump must not be stored closer than six inches (15 cm) from the ground.
5
Uncontrolled Long Term Storage Preparations
When applicable to the pump, storage periods over six months require the preceding storage procedure and storage preparation plus the following:
Inspect the lube oil and seal flush piping and either fill the piping with rust preventative oil, or re-coat the piping periodically to prevent corrosion.
Place 10 pounds (4.5 kg) of moisture absorbing desiccant or 5 pounds (2.3 kg) of vapor phase inhibitor crystals near the center of the pump. If the pump is assembled, place an additional one pound (0.5 kg) in the discharge nozzle securely fastened to the discharge elbow.
Install a moisture indicator near the perimeter of the pump. Cover the pump with 6 mil (0.15 mm) minimum thickness black polyethylene or equal and seal it with tape. Provide a small ventilation hole approximately ½ inch (12 mm) diameter.
Discharge Head
The discharge head is either a cast iron head or a fabricated head. Ports are provided for connecting the pressure gauge, stuffing box or mechanical seal bypass return and lubricator connections. The driver support portion of the discharge head is designed with large windows for easy stuffing box or mechanical seal adjustment. The windows are covered with coupling guards for safe operation.
Column
Threaded or flanged column construction provides positive shaft and bearing alignment and ease of assembly and disassembly. The line-shaft is supported within the column by using bearing retainers in the column assembly. The retainers are usually integrally fabricated in the column pipes. Bearings are spaced to provide vibration free operation below the shaft first critical speed in order to insure long bearing life and reduced shaft wear.
Provide a roof or shed shelter to protect from direct exposure to the elements.
GENERAL DESCRIPTION
The model VIC pump is a vertical industrial turbine type pump installed in a can (barrel), and is designed to meet wide ranges of service with maximum dependability. See Figure 1 or Figure 2 for some typical VIC pump.
Drivers
When mechanical seals are required, the most common type of drivers supplied are solid vertical shaft motors with adjustable spacer type couplings. When packed stuffing boxes are used with open line shaft pumps, hollow shaft motors or right angle gear drives, are often used with a separate head shaft through the driver and connected to the pump by a threaded coupling.
Bowl Assembly
The bowls are generally of flanged construction for accurate alignment and ease of assembly and disassembly. Impellers may be either open or enclosed depending on the design requirements. They are fastened to the pump shaft by taperlocks. For temperatures over 140°F (60°C) and in the larger size bowls (over 18”), impellers are keyed to the shaft. A special first stage low NPSH impeller may be provided in certain application.
Thrust Pot
A thrust pot is utilized when the driver is not designed to carry the pump thrust.
6
DISCHARGE HEAD ASSEMBLY
ITEM DESCRIPTION
600 DISCHARGE HEAD 610 COUPLING ASSEMBLY 617 SEAL HOUSING BEARING 616 SEAL HOUSING 779 SEAL HOUSING GASKET 620 MECHANICAL SEAL
COLUMN ASSEMBLY
642 COLUMN PIPE 645 COLUMN BOLTING 646 LINESHAFT 649 LINESHAFT COUPLING 652 BEARING RETAINER 656 LINESHAFT BEARING 643 CLEAN-OUT PIPE (OPTIONAL) 601 BARREL
BOWL ASSEMBLY
660 PUMP SHAFT 670 INTERMEDIATE BOWL 672 INTER. BOWL BEARING 673 IMPELLER 677 TAPERLOCK 680 WEAR RING (OPTIONAL) 760 HEX BOLT 692 SAND COLLAR 688 SUCTION BOWL/BELL 690 SUCTION BEARING 747 PLUG
Figure 1 VIC Pump with Solid Shaft Motor, Fabricated
T-Head, Mechanical Seal and Flanged Column
7
DISCHARGE HEAD ASSEMBLY
ITEM DESCRIPTION
600 DISCHARGE HEAD 604 ADJUSTING NUT 730 GIB KEY 608 HEAD SHAFT 616 STUFFING BOX 617 STUFFING BOX BEARING 618 SPLIT GLAND 620 PACKING 622 SLINGER 757 GLAND ADJUSTING SCREW 779 STUFFING BOX GASKET
COLUMN ASSEMBLY
642 COLUMN PIPE (FLG) 645 COLUMN BOLTING 646 LINESHAFT 652 BEARING RETAINER 656 LINESHAFT BEARING 649 LINESHAFT COUPLING 601 BARREL
BOWL ASSEMBLY
660 BOWL SHAFT 670 INTERMEDIATE BOWL 672 INTER. BOWL BEARING 673 IMPELLER 677 TAPERLOCK 680 WEAR RING (OPTIONAL) 760 HEX BOLT 692 SAND COLLAR 688 SUCTION BOWL/BELL 690 SUCTION BEARING 747 PLUG
Figure 2 VIC Pump with Cast L-Head, VHS Motor,
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Packed stuffing Box and flanged column
Installation – SECTION 3
When pumping unit is installed in a potentially explosive environment, the instruction after
the 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 equipment is to be modified, please contact a Goulds Water Technology representative before proceeding.
FOUNDATION AND PIPING
SUB BASE (SOLE PLATE) OR BARREL FLANGE INSPECTION
Sub base and sole plate are terms in common use to describe a general class of solid steel plates mounted in grout (or bolted to steel structures) at the pump­foundation interface.
1. Remove the sub base from the pump discharge head
or barrel flange, when shipped assembled.
2. Completely clean the underside of the sub base. It is
sometimes necessary to coat the underside of the sub base with an epoxy primer. (This is available as an option.)
3. Remove the rust preventative solution from the
machined topside with an appropriate solution.
SITE WITH CONCRETE FOUNDATION
1. A pump should have adequate space for operation,
maintenance, and inspection.
2. Sub base mounted pumps are normally grouted
on a concrete foundation, which has been poured on a solid footing. The foundation must be able to absorb any vibration and to form a permanent, rigid support for the pumping unit.
3. The foundation must be of adequate strength to
support the complete weight of the pump, plus the weight of the liquid passing through it. A typical installation will have bolts with a pipe sleeve 2 ½ times the bolt diameter embedded in the concrete.
Bolts should be sized and located in accordance with the dimensions given on the Certified Pump Outline Drawing, if provided. The pipe sleeve allows movement for the final positioning of the foundation bolts to conform to the holes in the sub base flange. See Figure 3.
All equipment being installed must be properly grounded to prevent unexpected static electrical
discharge. If not, a static electric discharge may occur when the pump is drained and disassembled for maintenance purpose.
4. Remove water and/or debris from anchor bolt holes/
sleeves prior to grouting. If the sleeve type bolts are being used, fill the sleeves with packing or rags to prevent grout from entering.
5. Carefully lower the sub base onto the foundation
bolts. Hand tighten the nuts.
6. Leveling the sub base may be done by several
methods. Two common methods are:
A. Using leveling wedges. This is shown in Figure 4. B. Leveling nuts on the anchor bolts.
Regardless of the method, a machinist level must be used for leveling.
NOTE: When using a machinist level, it is important
that the surface being leveled is free of all contaminants, such as dust, to ensure an accurate reading.
7. Level the sub base in two directions at 90º on the
machined surface. The levelness tolerance is 0.005 inches per foot for commercial, and 0.001 inches per foot for API.
FOUNDATION
DAM
GROUT
CENTERLINE ANCHOR BOLT
SUB BASE
LEVELING WEDGES
DAM
BOLT
SHIMS
Figure 3
SUB BASE
FOUNDATION
SLEEVE
FLOOR SLEEVE (OPTIONAL)
Figure 4
SUB BASE OR BARREL FLANGE GROUTING
1. Inspect foundation for dust, dirt, oil, chips, water,
etc. and remove any contaminants. Do not use oil­based cleaners as grout will not bond to it. Refer to grout manufacturer’s instructions.
2. Build dam around foundation (See Figure 4).
Thoroughly wet foundation.
9
3. Pour grout between sub base or barrel flange and
WARNING
WARNING
CAUTION
concrete foundation, up to level of dam. Remove air bubbles from grout as it is poured by puddling, using a vibrator, or pumping the grout into place. Non-shrink grout is recommended.
4. Allow grout to set at least 48 hours.
5. Tighten foundation bolts.
SITE WITH STRUCTURAL STEEL FOUNDATION
When the pump is mounted directly on a structural steel frame, pumps shall be located directly over, or as near as possible to, the main building members, beams or walls. The barrel, discharge head mounting flange or sub base, shall be bolted to the support to avoid distortion, prevent vibration and retain proper alignment.
PUMP INSTALLATION
When pumping unit is installed in a potentially
explosive environment, the instruction after the
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 equipment is to be modified, please contact a Goulds Water Technology representative before proceeding.
Pumps of 20 feet (6 m) or less in length are usually shipped assembled, with the exception of the driver, mechanical seal with tubing and coupling assembly, spacer or non spacer type. When provided, refer to the Certified Pump Outline for the applicable base plate plan for the location of anchor bolt holes.
INSTALLING A PARTIALLY ASSEMBLED PUMP
PIPING
Guidelines for piping are given in the “Hydraulic Institute Standards”, available from: Hydraulic Institute, 9 Sylvan Way, Parsippany, NJ 07054-3802 and must be reviewed prior to pump installation.
Never draw piping into place by forcing
the flange connections of the pump. Pipe strain will adversely effect the operation of the pump resulting in damage to the equipment and possible physical injury.
1. All piping must be supported independently, and
line up naturally with the pump flange so that undue pipe strain is not imposed on the pump.
2. DO NOT connect piping to pump until grout has
hardened and pump hold-down bolts have been tightened.
3. It is suggested that expansion loops or joints, if used,
be properly installed in the discharge line. When handling liquids at elevated temperatures expansion joints are used, so linear expansion of piping will not draw pumps out of alignment.
4. Carefully clean all pipe parts, valves and fittings,
and piping branches prior to assembly.
5. Isolation and check valves should be installed in
discharge line. Locate the check valve between isolation valve and pump, this will permit inspection of the check valve. The isolation valve is required for regulation of flow, and for inspection and maintenance of pump. The check valve prevents pump or seal damage due to reverse flow through the pump when the driver is turned off.
6. Increasers, if used, should be placed between pump
and check valves.
1. If a base plate was supplied, install as described in Foundation/Piping Section (page 9).
2. Clean the mounting surface of the plate and clean bottom surface of discharge head mounting flange.
3. Check that all fasteners on the pump are tight, as it is recognized that transportation and handling may result in bolt relaxation.
4. Install the barrel (can) to discharge head O-ring (743).
5. Sling through discharge head holes or thread two eyebolts through bolt holes in mounting flange and hoist unit into position over foundation.
NOTE: Eyebolts or sling should be rated to handle
in excess of the pump weight (see Outline Drawing).
6. Lower the unit and carefully guide it so that unit does not strike the side of the base plate. Continue to lower unit until the discharge head flange engages and rests firmly on the plate, then secure with capscrews provided.
7. When a lineshaft is shipped separately check shaft for straightness; average total run out should not exceed 0.005” T.I.R. (0.127mm) for 10 feet (3 m). Shaft must be within tolerance prior to installation.
8. Refer to remainder of this manual for complete assembly, startup, maintenance, disassembly and recommended lubricants for the pump.
INSTALLING THE BOWL ASSEMBLY
Do not work under a heavy suspended
object unless there is positive support and safe guards, which will protect personnel, should a hoist or sling fail.
7. Cushioning devices should be used to protect the pump from surges and water hammer if quick­closing valves are installed in the system.
10
Do not attempt to lift bowl assembly by the pump shaft. This can result in
damaging the pump shaft.
1. Prior to installing the bowl assembly, check that
CAUTION
CAUTION
CAUTION
all capscrews are tight. Turn the pump shaft by hand and make sure it turns freely. Remove all accumulated dust, oil, or other foreign material from the external surfaces.
2. If a suction strainer is provided, assemble it to the suction bell (or suction bowl).
1. Coat a thin film of oil to the threads on the lineshaft (646) and the coupling (649) (for non-galling material, or Molykote if galling material).
2. Install threaded coupling onto pumpshaft by threading it on for one-half its length. A fine wire inserted in the drill hole at the center of the coupling can be used as a gauge to determine when the coupling is correctly positioned on the pumpshaft. Remove the wire after installed the coupling.
Use “MOLYKOTE” Dow Corning or equal for all galling material such as 316
stainless steel.
INSTALLING THE COLUMN
OPEN LINESHAFT
Pump lineshafts are coupled with either threaded or keyed couplings. Follow only those procedures appropriate for the type of lineshaft coupling supplied.
When provided, see the Certified Pump Outline Drawing for the number of column and shaft sections required.
Figure 5
3. Place two I-beam supports across the base plate opening, strong enough to safely support the weight of the entire pump assembly. These I-beams should be connected by threaded rods and nuts so as to clamp them firmly together for the portion to be supported. (See Figure 5).
4. Place a suitable hoist or derrick over base plate opening with the hook in the center. Place the elevator clamps just below the discharge bowl. Place the elevator clamps just below the discharge bowl. For flanged column install two threaded eyebolts through the discharge bowl bolt holes 180º apart for flanged column. For threaded discharge utilize a lifting bail sized to handle the weight of the bowl assembly and suction apparatus. Attach a sling to the elevator clamps, eyebolts, or lifting bail and hoist it into position.
5. Carefully lower bowl assembly, guiding the unit so it does not strike the sides of the opening. Continue to lower bowl assembly until the elevator clamps or discharge bowl flange rests firmly on the I-beam supports.
6. Place a cover over the discharge bowl opening to prevent entrance of dirt or other foreign matter until ready for installation of the column assembly.
Do not drop any foreign object into the
bowl assembly. Such an object can cause serious damage to the pump and any downstream components. Any foreign object dropped into the bowl assembly must be retrieved prior to continuing assembly.
THREADED COUPLING INSTALLATION
NOTE: Shaft threads are left-handed.
When the threaded coupling is not installed on the pumpshaft, install as follows:
1. Check the headshaft (608) and lineshaft (646) for straightness. Average total runout should be less than 0.0005” T.I.R. per foot, not to exceed 0.005” T.I.R. for every 10 feet of shafting.
2. Hoist the first piece of lineshaft over the bowl assembly. Lower the lineshaft until the bottom end is properly aligned with the coupling of the pump shaft. Apply a thin film of oil to the threads on the lineshaft (646) and the coupling (649) (for non­galling material, or Molykote if galling material).
Use “MOLYKOTE” Dow Corning or equal for all galling material such as
316 stainless steel.
3a. With lineshaft in the proper position on the
coupling, screw lineshaft into the coupling manually until resistance is felt. A fine wire inserted in the hole at the center of the coupling can be used as a gage to determine when the coupling is correctly positioned on the shaft. Remove the wire after installing the shaft. Completely tighten the joint by using a pair of pipe wrenches. Use care not to damage any bearing journal areas on the shaft.
NOTE: Shaft threads are left-handed.
3b. With a keyed coupling
insert the key into the pump shaft. Lower the sleeve over the pump shaft, to approximately 1.0 in (25.4 mm) below the top of the shaft. Then lower the lineshaft until it touches the pump shaft. Insert the split ring into the grooves of the pump shaft and lineshaft. Raise the sleeve until it covers the split ring,
then insert the key into the lineshaft. Raise the sleeve to the top of the key and secure the sleeve to the split ring with a lock screw and lock wire.
11
CAUTION
WARNING
CAUTION
4. Install two eyebolts diametrically opposite the upper flange of the bottom column (644). Attach a sling to the eyebolts and to the hoist hook. Lower column section until the flange engages the flanged top bowl register. Insert as many bolts through both flanges as possible. Lift column assembly high enough to allow rotation of the supports. Install and tighten remaining capscrews gradually in diametrically opposite pairs until all are uniformly tightened.
5. Lift the assembly and remove the elevator clamp or supports and slowly lower the bowl and the column assembly. Place supports on the base plate and continue to lower the assembly until the column elevator clamps or column flange comes to rest on the supports.
NOTE: Normally, the bearing retainer will be integral
with column. The top flange of the column will have male register and the bottom flange of the column will have a female register. If you have separate bearing retainers, there will be a female register in the flange at both ends of the column. Follow step 6 below.
6. Place the bearing retainer (652) with bearing (656) over the shaft and fit the retainer in the female register of the flange. Make sure the contact faces in the flanges are clean. Use a file to remove nicks or dings.
7. Install threaded coupling (649) on the protruding end of the lineshaft (646), if required.
8. Assemble next column (642) section, or top column (641) as required, and make sure bottom column register (or bearing retainer (652)) engages the top column register, and secure with capscrews (760B) and hex nuts (735A) provided. Tighten capscrews into hex nuts gradually and uniformly.
9. Repeat the preceding procedures until all column sections required have been installed.
Do not drop any foreign object into the
column assembly. Such an object can cause serious damage to the pump and any downstream components. Any foreign object dropped into the column assembly must be retrieved prior to continuing assembly.
INSTALLING THE DISCHARGE HEAD
VIC Pumps are provided with either “T” type or “L” type head. Install the discharge head as follows:
1. If the stuffing box (See Fig. 6) is assembled to the
head, remove it and all the attached piping.
2. When a mechanical seal is provided it is shipped
separately.
3. Remove coupling guard if provided. Attach a sling
to the lifting lugs on the side of the discharge head or through windows and hoist discharge head over the protruding top shaft.
Eyebolts or sling should be rated to handle in excess of the pump weight (see Outline
Drawing).
Do not bump or scrape the shaft protrud­ing above the column. This could result in
bending or damaging the shaft.
12
4. Orient the discharge head in the required position and lower the head. Centering the vertical hole with the top shaft protruding above the column until the discharge head engages the column flange. Install capscrews and secure discharge head to the column flange. Tighten capscrews gradually in diametrically opposite pairs.
5. Lift the pump assembly high enough to allow rota­tion of the supports. Realign and lower assembly. Install and tighten remaining capscrews. Repeat the rotating and the tightening procedure until all capscrews are uniformly tight.
6. Hoist the discharge head by lifting lug and remove the elevator clamp attached to column.
7. Remove the support timbers or I-beams and clean the top of barrel flange. Orient the discharge head in the required position.
NOTE: Sling should be rated to handle in excess of the
pump weight.
8. Lower bowl, column and head assembly, until discharge head mounting flange engages with the barrel flange. Secure discharge head to barrel. Check the levelness of the discharge head in all directions, utilizing a machinist level across the driver’s mounting surface of the discharge head.
9. Check whether the top shaft (or stub shaft) is in the center of the stuffing box bore. If not, the shaft must be centered by shimming the head base and the sub base (or the foundation).
10. Rotate the shaft approximately 90º. Check again whether the shaft is at the center of the stuffing box bore or not. If not, either the top shaft is bent or the first shaft below it did not butt properly. Correction must be made before the installation procedures can proceed.
INSTALLING THE STUFFING BOX
Assemble stuffing box as shown in Figure 6.
1. Clean the surface of the discharge head where the stuffing box will be mounted and remove any nicks or burrs with a fine flat file. Position gasket on surface. Slide stuffing box (616) down over headshaft and into position on the gasket. Secure stuffing box with capscrews.
2. Grease the packing ring (620) for easier installation.
3. Twist the packing ring sideways to get it around the shaft easily. Start the first ring into the stuffing box. When the entire ring is worked in using the fingers, tamp it down using a split wood bushing (or equal) and push the packing ring down firmly. It must seal on the shaft and bore of the stuffing box. Install three (3) rings in this manner. Stagger ring joints 90 degrees apart. The split gland may be used as a tamper for the top ring.
4. Insert lantern ring (622) into stuffing box. Be sure it is properly positioned so that it aligns with the lubrication passage in the stuffing box.
5. Insert three (3) additional rings of packing. Stagger ring joints 90º apart.
6. Install the split gland and screw nuts on the split gland studs. Tighten nuts then relieve the nuts and tighten finger tight.
Check that the split gland is square in the
CAUTION
CAUTION
CAUTION
CAUTION
stuffing box. Cocking can cause uneven compression of packing and damage to the shaft or sleeve and heat up the shaft and stuffing box.
7. The stuffing box is shipped with both ports plugged.
If the discharge pressure is over 100 psi, remove the plug on Port “A” and attach a bypass (relief) line. If the discharge pressure is over 200 psi, remove the plug on Port “B” and attach another bypass line.
8. Final adjustment of the stuffing box must be made at
pump start up.
9. A properly packed stuffing box should be loose
enough to allow the shaft to be turned manually and must have leakage (see page 22 – Packing Adjustment).
Do not over tighten packing or excessive
wear can occur on the shaft or sleeve.
(619) STUD (2)
(735) HEX NUT
(2)
PORT "A"
(624) BYPASS LINE
(618) GLAND
PORT "B"
shaft packing. When further clean up is required, protect by covering the inside of the pump seal housing. Remove burrs, nicks and sharp corners by using a strip of emery cloth over the shaft threads. File threads around the keyway with a smooth mill file or emery cloth. Sharp edges must be rounded.
3. Remove all chips and dust from the shaft area.
4. Check that all rotary unit parts of the seal fit over the shaft. A pre-check may be made by removing the O-ring(s) from the cartridge sleeve Inside Diameter (ID) and then installing the seal on the shaft. Further shaft clean up will be necessary when the seal will not pass all the way into the seal housing.
5. Remove the seal after the pre-check, and re-install the sleeve O-ring(s).
6. Sparingly lubricate the shaft and sleeve ID with the lubricant included with the mechanical seal or recommended by the mechanical seal manufacturer. The following lubricants may be used, for water ser­vice, when no lubricant is supplied or recommended by the mechanical seal manufacturer.
• Light oil (SAE #10 or 20)
• Dow Corning #4 Grease
• Silicone lubricant
• Wax or clay
• Soapy water
(621) O-RING
(622) LANTERN
RING
(620) PACKING (6 RING)
(616) STUFFING BOX
(617) BEARING
Figure 6
INSTALLING THE MECHANICAL SEAL
The vertical turbine pumps are usually supplied with cartridge type mechanical seals, shipped assembled
- ready for installation, when mechanical seals are supplied. Instructions for installing mechanical seals are provided by the seal manufacturer. Consult the seal
manufacturer’s instructions (furnished with the seal) for information on the type of seal used. Additionally, refer
to factory furnished outline drawing and seal piping schematic on complex seal piping arrangements.
GENERAL REQUIREMENTS FOR ALL SEALS
1. Check surfaces at the face of the seal housing and at the bottom of the seal housing to insure that they are clean, flat and free of burrs. The face surface must be smooth to form a good sealing surface for a gasket or O-ring.
2. Check that shaft is smooth, and free of burrs, nicks and sharp corners that could ruin the O-ring or
Oil based lubricants will damage EPR / EPDM elastomer O-rings. Silicone lube and soapy water are safe for EPR / EPDM elastomer O-rings.
7. Install the O-ring or gasket, between the seal housing and seal. Install the seal over the shaft and ease it into position against the face of the seal box. Take care when passing the sleeve and O-ring over keyways or threads to avoid damaging the O-ring.
Do not bump carbon members against the shaft as they may chip, crack or break.
8. Position seal gland on discharge head seal housing and secure with capscrews (or nuts for studs) provided. Tighten capscrews gradually and uniformly in a criss-cross pattern, taking 2 or 3 passes.
Do not over tighten capscrews on gland. This can distort seal seat and cause seal
failure.
9. Install all seal piping as required. Prior to making final connections of sealing liquid pressurizing lines, make sure the seal housing and all sealing liquid lines are flushed free of dirt, scale and other particles that would be abrasive to the sealing faces.
10. The Driver and Coupling must now be installed before the driver installation can proceed. See page 14 - INSTALLATION OF A HOLLOW SHAFT DRIVER or page 16 - INSTALLATION OF A SOLID SHAFT DRIVER as appropriate.
13
WARNING
MECHANICAL SEAL ALIGNMENT
CONCENTRICITY OF MOTOR SHAFT
1. Install the dial indicator as shown, with the base attached to the motor support.
2. Rotate the motor shaft by hand while you read the dial.
3. Make sure that the runout does not exceed NEMA standards, 0.002 in (0.05 mm) maximum TIR.
4. If the indicator reads higher than 0.002 in (0.05 mm)TIR, loosen the four motor hold-down bolts and relocate the motor on the motor base register.
5. Obtain the desired position.
6. Tighten the hold-down bolts and repeat the indicator reading.
Note: Adding or removing shims between the motor and the discharge head helps alignment in the vertical direction. The motor may also have to be adjusted in the horizontal direction for alignment.
FLATNESS OF THE SEAL HOUSING
For this measurement, remove the mechanical seal if the dial indicator stylus cannot rotate 360° on the top surface of the seal gland.
1. Install the dial indicator as shown, with the base 1) Remove the lower coupling components and attach the base of the dial indicator to the motor shaft.
2. Place the stylus at the top surface of the seal gland, or at the top surface of the seal housing.
3. Slowly rotate the motor shaft 360°.
4. Check that the face of the seal housing is square with the shaft to within 0.002 in (0.05 mm) TIR.
CONCENTRICITY OF THE SEAL HOUSING
This measurement requires that you remove the mechanical seal.
1. Install the dial indicator as shown.
2. Rotate the motor shaft by hand and run the indicator in the inside­machined surface of the seal housing in order to determine the concentricity.
3. If the indicator reads higher than 0.004 in (0.10 mm) TIR, loosen the four motor hold-down bolts and relocate the motor on the motor base register.
4. Obtain the desired position.
5. Tighten the hold-down bolts and repeat the indicator reading.
14
CONCENTRICITY OF THE HEADSHAFT
1. Reinstall the mechanical seal if it was removed for the flatness or concentricity measurement.
2. Install the coupling assembly and adjust the impeller.
3. Attach the base of the dial indicator on the discharge head or motor support.
4. Place the stylus on the shaft between the top of the seal and the bottom of the pump coupling.
5. Slowly rotate the motor shaft 360°.
6. Check that the shaft runout is within 0.004 in (0.10 mm) TIR, or as required by specification.
7. Drill and dowel the pin in three places in order to secure the motor to the motor base after you obtain the required runouts.
CONCENTRICITY OF MOTOR SHAFT USING JACKSCREWS
1. Install the dial indicator as shown, with the base attached to the motor support.
2. Rotate the motor shaft by hand while you read the dial.
3. Make sure that the runout does not exceed NEMA standards, 0.002 in (0.05 mm) maximum TIR.
4. If the indicator reads higher than 0.002 in (0.05 mm) TIR, using the jackscrews relocate the motor on the motor base (sometimes no register).
5. Obtain the desired position.
6. Tighten the hold-down bolts (not the jackscrews) and repeat the indicator reading.
Note: Adding or removing shims between the motor and the discharge head helps alignment in the vertical direction. The jackscrews are provided to adjust the motor in the horizontal direction for alignment.
INSTALLING THE DRIVER
When installed in a potentially explosive environment, please ensure the motor is properly certified.
Serious damage may result if pump is run in the wrong direction.
NOTE: When pump is supplied with a thrust pot, do not
secure the driver to discharge head until after the thrust pot and flexible coupling are installed.
INSTALLATION OF A HOLLOW SHAFT DRIVER
This refers to either VHS type electric motors or hollow shaft type gear drives. A small paragraph will be devoted to combination electric motor and right angle gear drives.
Do not work under a heavy suspended
CAUTION
WARNING
object unless there is a positive support and safe guards which will protect personnel should a hoist or sling fail.
1. The driving mechanism of all hollow shaft driver is
shown on Figure 7. The head shaft (608) extends up through the quill or hollow shaft of the driver and is held in place by an adjusting nut (604), which not only carries all the static and hydraulic thrust of the impellers and shaft, but also provides the adjustment for the impeller clearances. The head shaft is connected to top shaft (or stub shaft) by a threaded coupling or a rigid flange coupling.
2. Attach a sling to the lifting lugs of driver and hoist
the driver up. Inspect the mounting surface, register and clean these surfaces thoroughly. If any burrs are found, remove burrs with a smooth mill file, cleaning thoroughly afterward.
3. For motor, orient the motor conduit box in the
required position. For the right angle gear, orient the input shaft to the desired position. Align the driver mounting holes with the mating tapped holes on the discharge head. Lower the driver until the registers engage and the driver rests on the discharge head. Secure driver with capscrews provided.
4. Lubricate the driver bearings in accordance with
instructions given on lubrication plate attached to the driver case. (Or refer to IOM of the driver)
5. After lowering and orienting the driver as explained
above, remove the drive coupling and the hold down bolts (See Figure 16). Be sure to mark the
location of the coupling before removing it.
(604) ADJUSTING
NUT
(730) GIB KEY
DRIVE
COUPLING
HEAD SHAFT (608)
CAPSCREW (760) ADJUSTING NUT
HOLD DOWN BOLT
top flange, discharge head base flange to base plate or the base plate itself could be out of level. If the latter, shimming between it and discharge head base, will correct it. Also, check concentricity of motor to motor-stand (if provided) to discharge head.
9. With the motor in place and the head shaft projecting through the motor quill shaft, make temporary electrical connection to check the motor rotation. (Be sure to remove the ratchet pins or balls before checking motor rotation.) Motor must rotate counter-clockwise when viewed from the top. See arrow on pump name plate. If motor does not rotate counter-clockwise, you can change the rotation by interchanging any two leads.
Never check motor rotation with the drive
coupling in place. The bore clearance between the drive coupling and the pump shaft O. D. is so close that should the motor spin with this shaft stationary, galling and locking together is very likely to take place.
10. Install motor drive coupling. (Be sure to line up the
match mark made at step 5.) Insert the ratchet pins
if a non-reverse ratchet is used. Match the coupling lugs with corresponding holes in motor. Tighten hold down bolts evenly, making sure driver coupling is properly seated in the register fit.
11. Fit gib key (730) into keyway, by filing if necessary,
to where there is a snug but sliding fit. This key must be able to be removed by gentle leverage with a screwdriver under it.
12. Be careful that the gib key (730) is not too high so
as to hold up the adjusting nut (604) from seating on the drive coupling. If it is, cut off some length of the key.
13. Install adjusting nut (604) to hand tight.
COMBINATION ENGINE AND MOTOR DRIVES
1. On combination drivers, the motor is invariably on
top with a projecting head shaft extension.
Figure 7
6. Lower the head shaft through the motor quill shaft to meet the shaft coupling. Apply a thin film of oil to head shaft threads (if non-galling material) and screw into the shaft coupling (located above the stuffing box). Make sure the shaft is not damaged in any way. Tighten the joint.
7. Check that the head shaft centers inside the driver quill shaft within 0.06” (1.5mm). If it does not, misalignment is indicated.
8. Any head shaft misalignment with driver quill shaft could be caused by a bent head shaft, burrs, or foreign matter between shaft ends or any of the mounting flanges: motor flange to discharge head
2. Follow all procedures outlined in the previous paragraph, except that the motor must be lowered over this extended head shaft and great care must be taken to center it exactly so as not to bump or mis­align the shaft while the motor is being lowered into place.
3. There are several methods of running engines without electric motors and vice versa, requiring simple adjustment to the combination drive, but they are too numerous to mention here and can be obtained from the gear manufacturers instructions included with the shipment.
15
IMPELLER ADJUSTMENT FOR ALL HOLLOW
WARNING
WARNING
SHAFT DRIVES
NOTE: Shaft adjustment up or down is accomplished by
turning the adjusting nut (604) Figure 8.
INSTALLATION OF A SOLID SHAFT DRIVER
NOTE: When pump is supplied with a thrust pot, do
not secure driver to discharge head until after the thrust pot and flexible coupling are installed.
NOTE: There are five holes in the adjusting nut and
only four in the motor coupling. See Figure 8.
1. With shafting all the way down and the impellers resting on their seats, turn the
(604) ADJUSTING NUT
LOWER IMPELLER
adjusting nut (604) in counter-clockwise
RAISE IMPELLER
direction, thus lifting the shaft, until the impellers just clear their
A
seats and the shaft/ motor turns free by hand. This removes all deflection from the
B
E
shaft.
2. For enclosed impellers, make another two turns
MOTOR COUPLING
ROTATION
on the adjusting nut. (3 turns for 12 thread/ inch shaft) Line-up one of the holes in
C
the adjusting nut with the nearest hole in the driver coupling. Insert the capscrew in the hole and tighten it.
D
Do not work under a heavy suspended
object unless there is a positive support and safe guard which will protect personnel should a hoist or sling fail.
The coupling between the driveshaft and the head shaft may be a non-spacer type (see Figure 9), or a spacer type (see Figure 10). The latter is used on pumps furnished with a mechanical seal to permit servicing of the seal without removal of the driver.
F
1. Attach a sling to the lifting lugs of driver, hoist
motor, inspect the mounting surface, register, and shaft extension, and clean these surfaces thoroughly. If any burrs are found, remove burrs with a smooth mill file, cleaning thoroughly afterward.
2. Orient the motor conduit box in the required
position. Align the motor mounting holes with the mating tapped holes on the discharge head. Lower the motor until the registers engage and the motor rests on the discharge head. Secure motor with capscrews provided.
H
3. On drivers having a nonreverse ratchet or pins,
manually turn the driver shaft clockwise viewed from the top until the nonreverse ratchet or pins fully engage.
G
4. Lubricate motor bearings in accordance with
instructions given on lubrication plate attached to the motor case.
Figure 8
NOTE: 1.00” and 1.18” diameter shafts are 12 thread
per inch (tpi), 1.50" through 2.44" are 10 tpi, all larger sizes are 8 tpi.
3. For Open Impellers, Align hole “A” in the adjusting
nut (604) and hole “C” in the driver coupling (See Figure 8) or whatever similar holes are in like position. If care is exercised, this will give an initial impeller clearance of 0.001” to 0.003” depending on shaft size or the pitch of the thread.
4. Insert capscrew into hole “B” provided these are the nearest matching holes for counter-clockwise rotation of adjusting nut, turn adjusting nut counter­clockwise until holes “B” and “D” line up. This gives 1/20 of a turn which is 0.004” on 12 tpi shaft or 0.005” on 10 tpi shaft.
5. Normal impeller clearance for the open impeller is considered to be 0.015” for the first 10 feet of the column length and 0.010” additional clearance for each 10 ft of length thereafter. This can be reduced in some instances where is necessary, but should not be attempted without consulting the factory or factory serviceman is present.
NOTE: Please read and follow the motor manufacturer’s
instructions before lubricating the motor bearings. Too much lubricant can cause the bearings to overheat prematurely.
The motor must not be tested for direction
of rotation when coupled to the pump. If pump should rotate in the wrong direction, serious damage to the pump and motor would result. Also serious injury to personnel could result.
5. Make temporary electrical connections according
to tagged leads or diagram attached to the motor. Motor must rotate counterclockwise when viewed from the top. See arrow on pump name plate. If motor does not rotate counterclockwise, you can change the rotation by interchanging any two leads.
6. Motor shaft end play adjustment: if required,
motor shaft end play shall be checked with a dial indicator prior to connecting the pump coupling to the solid shaft motor. Consult the applicable motor manufacturers instruction manual for detailed information on motor shaft end play.
16
COUPLING INSTALLATION: (SEE FIGURES 9 and 10)
1. Check all mating faces with a fine flat file before installation. Remove all burrs from face.
2. Apply a thin film of oil on the pump key (730) and insert key into headshaft keyway seat.
3. Gently lower pump hub of coupling (614) onto headshaft.
4. Thread on the adjusting plate (613) onto the headshaft until flush with top of the headshaft.
5. Clean driver shaft by removing all grease and burrs. Try to fit the key on the driver hub (610) before installing it to the driver shaft.
6. Apply a thin film of oil to the driver key (730) and insert key into drive shaft keyway seat. Place the driver hub (610) onto the drive shaft and with key slide it up the drive shaft until the annular groove is exposed. Install split ring (722) in the groove and slide driver hub down over the split ring to capture it.
for the specific unit. If the pump has thrust pot, do not
adjust the impeller position until the thrust has been installed and adjust the impeller position by using the adjust nut on the thrust pot.
Figure 9
7. If the pump is supplied with an adjustable spacer coupling (see figure 10), install spacer (612) be­tween head shaft and driveshaft hubs. Secure with capscrews (759) and hex nuts (735).
IMPELLER ADJUSTMENT
Improper impeller adjustment could cause contact between the rotating and stationary parts, resulting in a spark and heat generation.
Figure 10
NOTE: Mechanical seal, when provided, must not be
secured to the shaft prior to impeller adjustment. (open or enclosed type impellers). Shaft must move up or down within the seal Assembly.
For pumps handling liquids between –50º to 200º F, impeller adjustment can be made under ambient conditions. For liquids in excess of this range, it is recommended that impeller adjustment be made after the pump surface temperature has reached an equilibrium when charged with the pumpage. In those cases, where this is not feasible due to safety consideration or impossible due to external ice build up in cryogenic applications, refer to factory for specific instructions.
OPEN IMPELLERS
1. With the impellers touching the bottom of the bowls, turn the adjusting plate (613) towards the driver hub (610) or spacer (612) obtain 0.015 inch clearance between the adjusting plate and driver hub or spacer for the first 10 feet of column. Add
0.010” for each additional 10 feet of column. See figure 10 or 11. Note: The determination of driver
shaft end play can be critical and should be added to this setting. For larger pumps over 8”, this amount may be too little; please refer to Outline Drawing.
Impeller adjustment is identical for all motors and right angle gear drives. Adjustment is accomplished by turning the adjusting plate (613). (See figure 11 or 12). The correct adjustment is listed on the Outline Drawing
17
2. After impeller adjustment, align adjusting plate (613)
WARNING
with the pump hub (614), and tightly draw coupling flanges together with capscrews (759) and nuts (735). (See figure 9 and 10).
3. Check shaft run out with dial indicator. For mechanical seal installation, the run out should be
0.005 or less.
4. Set seal after impeller adjustment. Securely tighten all set screws in the collar. Remove the spacer between the gland plate and collar. Retain spacer for future resetting of seal.
ENCLOSED IMPELLERS
For enclosed impellers obtain the clearance between the adjusting plate and driver hub or spacer as specified on the outline drawing. See Figure 11 or 12.
INSTALLING THE GREASE LUBRICATED THRUST POT
This type of thrust pot and the motor stand are assembled on the discharge head by the factory. This thrust pot is designed to be used with NEMA Vertical C-face motors. The motor shaft and the pump shaft have to be coupled with flexible coupling.
NOTE: When impellers are reset, the seal must also be
reset.
Figure 11
INSTALLATION:
1. Install both coupling halves prior to mounting the motor. Refer to the coupling manufacturer’s instructions.
2. Using the lifting lugs on the motor, carefully lower the motor onto the motor stand of the thrust pot (See Figure 13) and align the bolt holes.
3. Install the bolts finger tight.
4. Make temporary electrical connections according to tagged leads or diagram attached to the motor. Motor must rotate counterclockwise when viewed from the top. See arrow on pump name plate. If motor does not rotate counterclockwise, you can change the rotation by interchanging any two leads.
Before beginning any alignment procedure,
make sure driver power is locked out. Failure to lock out driver power will result in serious physical injury.
ALIGNMENT OF FLEXIBLE COUPLING:
Alignment of the pump and motor is extreme importance for trouble-free mechanical operation. Straight edge alignment by an experienced installer proves adequate for most installations.
1. Check for coupling alignment by laying a straight
edge across both coupling rims at four points 90º apart.
2. Move motor until straight edge rests evenly at each
position. Repeat procedure until correct alignment is achieved.
3. Install flexible sleeve between the hubs per the
manufacture’s instructions.
4. Tighten all motor bolts.
NOTE: Be sure the relief fitting (#11 in Figure 13) is
clear of paint or any other obstructive material. Otherwise it will cause premature failure of the thrust pot and is not covered under warranty.
Figure 12
18
ITEM DESCRIPTION
1 Motor stand 2 Headshaft 3 Bearing housing 4 Bearing 5 Top seal 6 Snap ring 7 Lock nut 8 Lock washer 9 Lower seal 10 Grease lube fitting 11 Grease relief fitting 12 Hex tap bolt 13 Hex nut 14 Hex capscrew
Figure 13 – Grease Lubricated Thrust Pot
3. Lower the drive shaft through the quill of the thrust
pot assembly to meet the shaft coupling. Apply a thin film of oil to the head shaft thread and screw into the shaft coupling.
4. For unit with mechanical seal and flanged coupling,
install the spacer flange coupling as instructed on page 16.
5. Install the gib key (#16) into the drive shaft and the
hollow shaft clutch.
6. Install the adjusting nut (#17) to hand tight.
7. With shafting all the way down and the impellers
resting on their seats, turn the adjusting nut (#17) in counter-clockwise direction, thus lifting the shaft, until the impellers just clear their seats and the shaft/motor turns free by hand. This removes all deflection from the shaft.
8. Line-up one of the holes in the adjusting nut with
the nearest hole in the driver coupling. Insert the capscrew in the hole and tighten it.
NOTE: 1.00” and 1.18” diameter shafts are 12 tpi, 1.50"
through 2.44" are 10 tpi, all larger sizes are 8 tpi.
9. Install the bottom of the flexible coupling to the top
of the drive shaft.
10. Attach a sling to the lifting lugs of driver and hoist
the driver up. Inspect the mounting surface, register and clean these surfaces thoroughly. If any burrs are found, remove burrs with a smooth mill file, cleaning thoroughly afterward. Temporarily attach the top half of the flexible coupling to the motor shaft.
11. Orient the motor conduit box in the required
position. Align the driver mounting holes with the mating tapped holes on the discharge head. Lower the driver until the registers engage and the driver rests on the thrust pot assembly. Secure driver with capscrews provided.
12. Secure the flexible coupling assembly.
INSTALLING THE OIL LUBRICATED THRUST POT
If the unit is supplied with a thrust pot (see Figure 14), the thrust pot should be installed on top of the discharge head or motor stand before installing the driver. The driving mechanism of the thrust pot assembly is similar to the hollow shaft motor. (See Figure 7)
1. Attach a sling to the thrust pot assembly through the windows on the motor adapter and hoist the assembly over the top of the discharge head.
2. Clean the mounting face with a flat file to remove any burr of the discharge head and the thrust pot. Lower the thrust pot assembly and orient it so that the bolt hole on the base of the thrust pot and the top flange of the discharge head are lined up. Install all the bolts to secure the assembly to the discharge head.
13. Install the coupling guard.
14. Fill the oil reservoir with recommended oil.
19
ITEM DESCRIPTION
1 Thrust Pot Body 2 Tube - Oil Retaining 3 Thrust Bearing 4 Capscrew - Head to Thrust Pot 5 Washer - Head to Thrust Pot 6 Hex Nut - Head to Thrust Pot 7 Roller Bearing 8 Bearing Seat 9 Allen Head Screw 10 Capscrew - Motor Adapter to Motor or Thrust Pot 11 Washer - Motor Adapter to Motor or Thrust Pot 12 Gasket 13 Capscrew 14 Non-reverse Pin 15 Socket Head Screw 16 Gib Key 17 Adjusting Nut 18 Coupling Guard 19 Setscrew
ITEM DESCRIPTION
20 Flexible Shaft Coupling 21 Gib Key 22 Key (Motor Shaft) 23 Setscrew 24 Round Head Screw for Coupling Guard 25 Washer Coupling Guard 26 Motor Adapter 27 Capscrew - Adjusting Nut 28 Washer - Adjusting Nut 29 Retaining Ring 30 Hollow Shaft Clutch 31 Non-reverse Plate 32 Pipe Plug - Oil Filling 33 Retaining Ring 34 Hollow Shaft 35 Shaft Sleeve 36 Sight Gauge 37 Pipe Plug - Oil Drain
20
Figure 14 – Oil Lubricated Thrust Pot
Pump Startup And Operation – SECTION 4
WARNING
WARNING
WARNING
CAUTION
PRE-START PROCEDURE
Consult the applicable manufacturer’s instructions for detailed information for the prime mover (electric motor, engine or steam turbine), coupling, driveshaft, gear driver. Prior to startup, check the following:
1. Confirm that the following procedures described in the “Installing the Drivers” sections have been performed:
STARTUP PRECAUTIONS
1. All equipment and personal safety related devices and controls must be installed and operating properly.
2. To prevent premature pump failure at initial start-up due to debris in the pipe system, ensure the system has been adequately cleaned and flushed.
3. Variable speed drivers should be brought to rated speed as quickly as possible.
A. Wiring of Driver.
B. Driver must rotate counterclockwise (CCW)
when viewed from above.
Serious damage may result if pump is run in the wrong direction.
Do not check motor rotation unless motor is bolted to pump and drive coupling is
match marked and removed.
Be sure to install the coupling guards
around all exposed shafts and couplings before start up of the pump. Failure to comply may result in severe personnel injury or death.
C. Check alignment of pump and driver.
D. Impeller adjustment has been made.
E. Mechanical seal lock collar is attached to shaft.
2. For open lineshaft pump, make sure the stuffing box
relief (bleed) line is connected (if applicable).
3. For pump with mechanical seal, make sure mechani-
cal seal is properly lubricated and all piping to seal is connected. Also, check that all cooling, heating and flushing lines are operating and regulated.
4. Open the air release system isolation valve. Adjust
the air release system throttling device so that it is partially open. It should not be closed or fully open.
NOTE: Not exhausting the air or exhausting it too fast
can damage the pump.
5. All connections to driver and starting device match
wiring diagram. Voltage, phase, and frequency on motor nameplate agree with line current.
6. Rotate shaft manually to ensure impellers are not
binding.
4. Variable speed drivers should not be adjusted or checked for speed governor or over-speed trip settings while coupled to pump at initial startup. If settings have not been verified, uncouple the unit and refer to driver manufacturer’s instructions for assistance.
5. Running a new or rebuilt pump at slow speeds may not provide enough flow to adequately flush and cool the stuffing box bushing’s close running surfaces.
6. Pumpage temperatures in excess of 200º F (93º C) will require warm-up of pump prior to operation. Circulate a small amount of pumpage through the pump until the casing temperature is within 100º F (38º C) of the pumpage temperature and evenly heated.
PRIMING
The pump must be properly vented
through the discharge head/barrel vent connections. This is especially important for fluids with suction pressure close to their vapor pressures. Vent piping must be continuously rising back to source so that fluid cannot collect in the vent line.
The first stage impeller must always be completely submerged. Pump must not run dry as the rotating parts within the pump may gall and seize to the stationary parts. The parts must be lubricated by the liquid being pumped.
NOTE: NPSHa must always exceed NPSHr as shown on
Goulds Water Technology performance curves.
NOTE: Pump must never be throttled on the suction
side by allowing suction strainer to become clogged.
PUMP STARTUP
7. Verify that driver bearings are properly lubricated and check oil level in housing.
8. Check that auxiliary seal components are properly vented.
9. Inspect discharge piping connection, valves and pressure gauges for proper operation.
1. Partially close the valve in the discharge line.
2. Crack open suction side valves on pressurized systems slowly. Open suction valves fully.
3. Vent system when the pump surface temperature has reached an equilibrium.
4. Start the pump. If any abnormal noises, jerking or vibration is noted, stop the pump immediately, determine the cause of the abnormalities and correct them.
21
5. After the pump is operating at full speed, slowly
WARNING
WARNING
CAUTION
open discharge valve. If driver overheats or there is excessive vibration, stop the pump, determine the causes and correct them.
Improper impeller adjustment could cause contact between the rotating and stationary parts, resulting in a spark and heat generation.
6. If the air release valve is manually operated, close it.
7. For open lineshaft pumps, with the pump in operation, there should be some leakage at the stuffing box packing. The correct leakage rate is approximately one drop per second. Check the temperature of the leakage as well as the discharge head. If the pump runs hot and the leakage begins to choke off, stop the pump and allow it to cool down. A few light taps with a hammer on the gland will upset the packing sufficiently to resume leakage. After pump has cooled, restart pump and follow preceding procedure. Run pump 15 minutes, check leakage. If it exceeds two drops per second, adjust packing as described in “Packing Adjustment and Replacement”.
8. For pump with mechanical seal, if seal leaks slightly at startup, allow a reasonable amount of time for seal to adjust itself. Liquids with good lubricating qualities normally take longer to wear in the seal than liquid with lesser qualities. When a seal starts out with a slight leak and gets progressively less while running, it is indicative of leakage across the seal faces. Continued running will eliminate this. Where leakage occurs immediately and remains constant, unaffected by running, it usually indicates secondary seal (Shaft packing) damage, or seal faces are warped out of flat.
Maintenance – SECTION 5
PREVENTIVE MAINTENANCE
Before initiating maintenance procedures,
disconnect (utilizing proper logout/ tagout procedures) all energy sources to the equipment and accessories and completely discharge all parts and accessories which retain electric charge. Failure to comply may result in severe personnel injury or death.
Preventive maintenance includes periodic inspection of oil level in the oil reservoir (for pump with oil lube column), re-lubrication of electric motors, gear drives and prime mover. Systematic inspection of the pump and its components shall be made at regular intervals. The frequency required depends upon the operating conditions of the pump and its environment. See following Preventive Maintenance Schedule. Consult the applicable manufacturer’s instructions for detailed information on maintenance for the prime mover, driveshaft, electric motors and gear drives. Any deviation in performance or operations from what is expected can be traced to some specific cause. Variances from initial performance will indicate changing system conditions, wear, or impending breakdown of the unit.
PREVENTIVE MAINTENANCE SCHEDULE
(in operating hours)
Clean dirt, oil and grease from driver and discharge head.
Clean driver ventilation passage to prevent overheating.
Change lubrication in gear drive. 2,000 or once a year Tighten all loose bolts and check
for excessive vibration. If packing is grease lubricated,
add as required. Check that there is some leakage
through stuffing box while pump is in operation. Do not tighten gland nuts unless necessary.
Maintain a liquid film of lubrication between the seal rubbing faces.
Re-grease the motor bearings: 1800 RPM and above Refer to Motor IOM
Below 1800 RPM Refer to Motor IOM
PROCEDURE
TIME INTERVAL
As required
As required
As required
100
As required
As required
PACKING ADJUSTMENT AND REPLACEMENT
Pumps equipped with packing, shall be adjusted whenever the leakage rate exceeds two drops per second. If there is no leakage or the stuffing box overheats, do not back off gland nuts while the pump is running. This will allow the entire set of rings to move away from the bottom of the box, without relieving pressure of the packing on the shaft. Stop the pump and allow packing to cool then restart the pump.
Be sure to reinstall the coupling guard before restarting the pump.
It may be necessary to repeat this procedure several times before proper amount of liquid comes through to efficiently prevent overheating. If leakage is excessive, adjust the stuffing box as follows:
1. With the pump in operation, tighten the gland nuts one-quarter turn for each adjustment. Allow packing to equalize against the increased pressure and leakage to gradually decrease to a steady rate, before making another adjustment.
Do not over tighten the stuffing box. Excessive pressure can wear out packing
prematurely and seriously damage the shaft.
2. With the pump shut down and when packing has been compressed to the point that the gland is about to contact the upper face of stuffing box, remove the split gland, add one extra packing ring and readjust. If this fails to reduce leakage to two drops per second, remove all packing rings and replace with new rings.
3. Remove the packing with the aid of a packing hook. If a lantern ring is provided, remove it by inserting a wire hook in the slots of the ring and pull it from the packing box. Thoroughly clean the stuffing box of all foreign matter.
22
4. If the replacement packing is in the form of a
WARNING
WARNING
WARNING
continuous coil or rope, it must be cut into rings before installing. Tightly wrap one end of the packing material around the top shaft like one coil spring, and cut through the coil with a sharp knife. For re-packing sequence, refer to “Installing the Stuffing Box” (page 12).
THRUST POT LUBRICATION AND MAINTENANCE
OIL LUBRICATED THRUST POT (SEE PAGE 19)
Pumps are shipped without oil. Oil­lubricated bearings must be lubricated at
jobsite.
It is a good practice to flush the oil reservoir before first time operation and at the time of oil changes to remove all grit particles in the oil reservoir sump. Use the same type of oil to flush reservoir as specified for lubrication. (See page 24 on recommended turbine oil.) Remove drain plug (Item # 37) before flushing. Flushing oil may be poured through oil fill opening (Item #32) after removing oil fill plug. The proper oil level when the unit is not running shall be not more than 1/8” to 1/4” from the top of the oil sight gauge (Item #36). Overfilling may result in overheating of the unit. During operation the oil level in the sight gauge may be higher than the recommended range mentioned above. Under no circumstance is it allowed to rotate the unit when the oil in the sight gauge is not at the required level.
To avoid oxidation of the anti-friction bearings during shut-down periods lasting longer than one week, it is recommended to fill up the oil reservoir until the oil runs over the oil retainer tube (Item #2) and down the shaft so that the bearings remain completely immersed in the oil. Before start-up, do not forget to drain the excess oil to its required level. Oil change depends on the severity of the environment. Generally speaking, when the oil in the sight gauge changes to a darkish brown color it is time for an oil change. However, for a longer bearing life, it is recommended that the oil be changed every six months. Be sure to flush the oil reservoir (see above) with each oil change.
GREASE LUBRICATED THRUST POT (SEE FIGURE 13)
Lubricating Intervals in Operating Hours
2000 lbs 2000 2000 2000 1800 4000 lbs 2000 2000 1600 1400 6600 lbs 2000 2000 1400 1200
Operating Speed (RPM)
Thrust Rating
<1770 1770 2900 3500
The bearing is pre-lubricated at factory. Re-grease the bearing according to the following procedure and per the schedule in the above table.
NOTE: The bearing temperature usually rises after
re-greasing due to an excess supply of grease. Temperature will return to normal after the pump has run and purged the excess from the bearings, usually two to four hours.
For most operating conditions, lithium based NLGI 2 grease is recommended. This is the grease factory used for pre-lubrication. This grease is acceptable for bearing temperatures of 5º to 230º F. Temperature extremes (either high or low) may require different type grease. Following table lists some various manufacturers’ compatible grease:
Mobil Mobilith AW2 Amoco Amolith EP2 Ashland Multilube EP2 Exxon Unirex N2 Shell Alvania EP LF2 Unocal Unoba EP2 Chevron Dura-Lith EP NLGI2
NOTE: If it is necessary to change the grease type or
consistency, the bearing must be removed and all the old grease eliminated from the housing and bearing.
Bearings must be lubricated properly in order to prevent excess heat generation,
spark and premature failure.
SEASONAL SHUTDOWN
Prior to restating the pump, manually rotate the shaft several times.
1. For oil lubricated pumps that are shut down for an extended period of time, it is suggested that the pump be operated for at least 15 minutes every two weeks with oil feed wide open 2 hours before and during startup in order to maintain a film of oil on the shafting and shaft bearings.
2. For product (or water) lubricated pump, if the pump is to be shut down for an extended period of time, operate it for at least 15 minutes with adequate pre­lubrication every two weeks.
3. Before resuming normal operations, oil should be changed on drivers, right angle gear and lubricating oil system. After 15 minutes of operation, readjust the lateral.
1. Wipe dirt from grease fittings.
2. Check relief port 180º from fitting to make sure it is open.
3. Fill the grease cavity through the fitting until fresh grease comes out the relief hole.
4. Ensure the relief port closes.
23
RECOMMENDED LUBRICANTS
Grease for Suction Bowl Bearings and Shaft Packings
Operating Temperature Range 20º F to 120º F 20º F to 120º F
Required properties Pour Point : 20º F or lower (base oil) 20º F or lower Flash Point : 300º F or higher (base oil) 300º F or higher 100º F Viscosity : 450 SUS or higher (base oil) 150 SUS or higher ASTM Dropping Point : 160º F or higher 32 Nitrile Rubber Swell : Minimal (up to 3%) Minimal (up to 3%) Thickener Type: Calcium or Lithium Thickener Percent: 15% Minimum
Turbine Oil for Thrust Pot
Manufacturer Recommended Standard Industrial Lubricants
Chevron Chevron
Texaco Texaco
Chevron Texaco Corp.
Novatex EP2 *Regal EP 32 Mystik Oil & Grease Mystik Oil & Grease
Mystik JT-6 Grease (5484) *Mystik Turbax Oil 32 (1812)
Premium Lithium EP2 Pacemaker Oil 32
CITGO Petroleum Corp.
Lyondell Lubricants Lyondell Lubricants Litholine HEP Grease *Duro Oil 32 Mobil Mobil
Exxon Exxon
Exxon Mobil Corp.
Lodok EP 2 *Nuto H Hydraulic Oil 32
Multiplex EP Grease 2 Hydraulic Oil AW/D 32
Alvania EP Grease 2 *Tellus Plus Oil 32
Note: * in front of the oil grade means it is suitable for sub zero (F) temperature service.
76 Lubricants Co.
Shell Oil
Ulti-Plex Grease EP2 *Hydraulic Oil AW32
Citgo Oil & Grease Citgo Oil & Grease
Mobilux Grease EP2 DTE Oil 24
76 Lubricants 76 Lubricants
Shell Shell
Manufacturer Recommended Food Machinery Lubricants
Chevron Chevron
Texaco Texaco
Chevron Texaco Corp.
#Cygnus Grease 2 #Cygnus Hydraulic Oil 32 Mystik Oil & Grease Mystik Oil & Grease
#Mystik FG2 Grease (5607) #Mystik FG/AW 32 Oil (1931)
#Clarion FG HTEP Grease #Clarion FG AW Oil 32
CITGO Petroleum Corp.
Lyondell Lubricants Lyondell Lubricants Ideal FG 2 Grease #Ideal FG 32 Oil Mobil Mobil
Exxon Exxon
Exxon Mobil Corp.
Foodrex FG 1 *Nuto FG Hydraulic Oil 32
76 Pure FM Grease 76 FM Oil 32
Note: 1. * in front of the oil grade means it is suitable for sub zero temperature (F) service.
2. Food machinery lubricants meet USDA H-1 requirements and FDA document 21 CFR 178.3570. In addition, # in front of the product name means it is NSF 61 registered products.
76 Lubricants Co.
#FM Grease EP2 *#Lubricating Oil FM32
Citgo Oil & Grease Citgo Oil & Grease
#Mobil Grease FM102 DTE FM 32 Oil
76 Lubricants 76 Lubricants
24
TROUBLESHOOTING
TROUBLE PROBABLE CAUSE REMEDY
1. Pump does not start A. Electrical circuit open or not Check circuit and correct. completed
B. Improper lateral adjustment. Reset impeller adjustment, Impeller on bottom. See pages 17 or 18.
C. Low voltage supplied to Check whether driver wiring is electric driver correct and receiving full voltage.
D. Defective motor Consult factory.
2. No liquid delivered A. Discharge valve closed Be sure the discharge valve is in full open position.
B. Speed is too low Check if driver is directly across the line and receiving full voltage.
C. Damaged bowl assembly; Pull pump and repair all Broken or disconnected shaft damaged components.
D. Driver with reduced voltage, or Check RPM, voltage, and amps. Reduced current starting does not come up to speed
E. Barrel/Discharge head not Open vent. properly vented.
F. Suction valve closed. Confirm valve position.
3. Not enough liquid A. Same as items 2-A thru 2-E Same as items 2-A thru 2-E.
B. Cavitation Insufficient NPSH available. Consider lowering the bowl assembly by adding column.
C. Impellers adjusted too high See pages 17 or 18.
D. Air or gas in the water If successive starts and stops do not remedy, lower pump if possible, or close discharge valve to maintain well pumping level at a lower GPM.
E. Excessive pump wear Pull pump and repair as required.
F. Suction valve partially open Confirm valve position.
4. Not enough pressure See (3.) Not enough liquid. See (3.) Not enough liquid.
5. Pump works for a while A. Excessive horsepower required. Use larger driver. Consult factory. and quits
B. Pumping higher viscosity or Test liquid for viscosity and specific gravity liquid than specific gravity. designed for.
C. Mechanical failure of Check bearings and impellers for critical parts damage. Any irregularities in these parts will cause a drag on the shaft.
D. Suction strainer clogged Pull pump and clean the strainer.
E. Misalignment Realign pump and driver.
F. Same as 2E, 2F and 3F Same as 2E, 2F and 3F
25
TROUBLESHOOTING
TROUBLE PROBABLE CAUSE REMEDY
6. Pump takes too much A. Damaged impeller Inspect, replace if damaged. power
impeller and bowl
C. Specific gravity higher than Test liquid for viscosity and pump designed for specific gravity.
D. Viscosity too high, partial Check for both. They can cause freezing of pumpage drag on impeller.
E. Defective bearing Replace bearing, check shaft or shaft sleeve for scoring.
F. Packing is too tight Release gland pressure. Retighten. (See page 22.) Keep leakage flowing. If no leakage, check packing, sleeve or shaft.
7. Pump is too noisy A. Cavitation Same as Item 3-E.
B. Bent shaft Straighten as required. See Page 10 for runout limits.
C. Rotating parts binding, loose Replace as required. or broken.
D. Bearings are worn out Replace bearings.
E. Resonance Check piping strain, consult factory.
F. Same as 2F and 3F Same as 2F and 3F
8. Excessive vibrations A. Coupling misalignment, bent Determine cause utilizing shaft
impeller unbalance, worn vibration frequency analyzer and/or bearings, cavitation, piping disassemble pump. Complex strain and/or resonance problem may require factory service assistance.
B. Motor or gear driveshaft end See Installation of Hollow Shaft play maladjustment Driver (VHS), Page 14.
C. Bent shaft Straighten as required. See Page 10 for runout limits.
D. Crooked well. Survey the well and consult factory.
E. Same as 2F and 3F Same as 2F and 3F
9. Pump leaks excessively A. Defective packing Replace worn packing.
installed or run-in. Replace improper packing with correct grade for liquid being pumped.
10. Stuffing box is A. Packing is too tight See item 6-F.
all packing if burnt or damaged. Re­ grease packing as required.
C. Wrong grade of packing Consult factory.
D. Stuffing box improperly packed Repack stuffing box.
11. Packing wears too fast A. Shaft or shaft sleeve worn Pull pump and remachine, or
replace shaft and/or sleeve. B. Insufficient or no lubrication Repack and make sure packing
is loose enough to allow some leakage.
C. Improperly packed Repack properly, make sure all old packing is removed and stuffing box is clean.
D. Wrong grade of packing Consult factory.
26
B. Foreign object lodged between Remove object as required.
at stuffing box
overheating
B. Wrong type of packing Replace packing not properly
B. Packing is not lubricated Release gland pressure and replace
Disassembly And Reassembly – SECTION 6
WARNING
WARNING
DISASSEMBLY
Before working on pump or motor, lock out driver power to prevent accidental
startup and physical injury.
NOTE: Pump components should be match-marked
prior to disassembly to ensure they are reassembled in the correct location.
SHAFT
TAPERLOCK DRIVER
DISASSEMBLY POSITION
HEAD AND COLUMN
1. On pumps which are driven through a gear drive,
remove the driveshaft between the gear and the prime mover.
2. On pumps, which are electric motor driven, remove
the electrical connections at the conduit box and tag the electrical leads, so they can be reassembled the same way they were disassembled.
3. Uncouple driver (or gear box) from pump shaft and
mounting flanges and lift off by the lifting lugs or eyebolts as furnished.
Never try to lift entire pump assembly by the lifting lugs or eyebolts furnished for the
driver only.
4. Disconnect discharge head from the discharge
piping. Remove all hold down bolts and external piping. Remove coupling, packing box and proceed with disassembly down to the bowls by reversing the procedures described in detail for assembling the unit.
BOWL ASSEMBLY
The bowl assembly is composed of a suction bowl/bell, intermediate bowl(s), top bowl, impellers and securing hardware, bearings, and pump shaft.
Turbine bowl impellers are secured to the shaft by either a taperlock or a key and split thrust ring. Follow only those procedures that apply to the particular construction supplied.
NOTE: Match mark bowl assembly in sequence of
disassembly to aid in the reassembly procedure.
IMPELLER
BOWL
Figure 15
3. Pull shaft out as far as possible and strike impeller hub by using a taperlock driver or equivalent to drive the impeller off the taperlock (See Figure 15).
4. After the impeller is freed, insert a screw-driver into the slot in the taperlock and spread it open. Slide the taperlock and impeller off the pump shaft.
5. Repeat the above procedures until the bowl assembly is completely disassembled.
KEYED BOWL DISASSEMBLY
1. Remove capscrews that secure top bowl (669) to intermediate bowl (670).
2. Slide top bowl off the pumpshaft (660).
3. Remove capscrews (759) and split thrust ring (725) from pump shaft.
4. Slide impeller off the pumpshaft and remove the key (730). If impeller is seized to the shaft, strike impeller with a fiber mallet and drive impeller off the pumpshaft.
5. Repeat the above procedures until the bowl assembly is completely disassembled
TURBINE BOWL – WEAR RING REMOVAL
TAPERLOCK CONSTRUCTION BOWL DISASSEMBLY
1. Remove capscrews that secure top bowl (669), not shown, to intermediate bowl (670). See Figure 1 or
2.
2. Slide discharge bowl and top bowl off the pump shaft (660).
1. Remove set screws or grind off tack weld, when rings are furnished with those locking methods.
2. Utilizing a diamond point chisel, cut two “V” shaped grooves on the bowl wear ring approximately 180º apart. Use extreme care not to damage the wear ring seat.
3. With a chisel or drift, knock the end of one half of the ring in, and pry the ring out.
4. On special materials such as chrome steel, set up the bowl in a lathe and machine the wear ring off using extreme care not to machine or damage the ring seat.
27
IMPELLER WEAR RING REMOVAL
WARNING
1. Utilizing a diamond point chisel, cut two “V” shaped grooves on the impeller wear ring approximately 180 degrees apart. Use extreme care not to damage the wear ring seat.
2. With a chisel or drift, knock the end of one half of the ring out, and pry the ring off.
3. On special materials such as chrome steel, set up the impeller in a lathe and machine the wear ring off using extreme care not to machine or damage the ring seat.
BOWL AND LINESHAFT BEARING REMOVAL
Utilizing an arbor press and a piece of pipe or sleeve with outside diameter slightly smaller than the outside diameter of the bearing to press the bearing out.
NOTE: Bowl bearings are press fit. Do not remove
unless replacement is necessary.
INSPECTION AND REASSEMBLY
INSPECTION AND REPLACEMENT
1. Clean all pump parts thoroughly with a suitable cleaner.
REASSEMBLY OF THE BOWL ASSEMBLY WITH TAPERLOCK CONSTRUCTION
1. For ease in re-assembly apply a thin film of turbine oil to all mating and threaded parts.
2. If the sand collar is not assembled to the shaft, install the sand collar. The sand collar is attached to the shaft with a shrink fit. The larger diameter of the counterbore of the sand collar goes toward the suction bell bearing. Heat the sand collar until it slips over the shaft and quickly position it so that the bottom of the sand collar is set according to the "X" dimension, before it cools. See Figure 16. See Table 1 for the "X" dimensions. Slide the plain end of the pump shaft into the suction bowl/bell bearing until the sand collar rests against the suction bowl/ bell.
Wear protective gloves and use appropri­ate eye protection to prevent injury when handling hot parts.
3. Hold the shaft in this position by inserting a long capscrew (or all thread rod with a hex nut) with an assembly jig into the bottom end of the suction hub and secure tight into the threaded hole at the end of the shaft. Be sure the shaft has been cleaned and
checked the straightness.
2. Check bearing retainers for deformation and wear.
3. Check shafts for straightness and excessive wear on bearing surfaces. Average total run-out should be less than 0.0005” TIR per foot, not to exceed
0.005” T.I.R. for every 10 feet of shafting.
4. Visually check impellers and bowls for cracks and pitting. Check all bowl bearings for excessive wear and corrosion.
5. Replace all badly worn or damaged parts with new parts. In addition, replace all gaskets and packing as required.
TURBINE BOWL WEAR RING INSTALLATION
Place chamfered face of the bowl or impeller wear ring towards the ring seat and press the ring into the seat. Use an arbor press or equal, making sure the ring is flush with the edge or the wear ring seat.
INSTALL BOWL AND LINESHAFT BEARING
(Refer to Figure 1 for components numbers)
1. Press bearing (656) into retainer (652) using an arbor press or equal.
Figure 16
2. Press bearing (690) into suction bowl/bell (689) by using an arbor press or equal. The top of the bearing should protrude above the suction hub equal to the depth of the counter bore in the sand collar.
3. Place the bowl (670) with the flange downward and press bearing (672) through chamfered side of bowl hub until the bearing is flush with the hub by using an arbor press or equal.
28
TABLE 1 Sand Collar Location Dimension
Pump Model “X” Dim. Pump Model “X” Dim.
5C, 5T 1.88” 13A, 13RA 7.19” 5WA 1.81” 13C 5.13” 6A, 6RA 3.13” 14DH 8.13” 6C 2.25” 14F, 14H,14RH 7.13” 6DH 3.50” 14RJ 5.06” 7A, 7RA 3.13” 15F Bowl 9.50” 7C, 7T, 7WA 2.81” 16B 6.56” 8A, 8RA 3.13” 16DH Bowl 8.63” 8DH 4.44” 16DM 5.88” 8RJ 2.88” 16RG 6.69” 9A, 9RA 3.41” 18B 7.25” 9RC, 9T, 9WA 5.19” 18C 6.63” 10A, 10RA 4.31” 18D 7.56” 10DH 6.31” 18GX 5.75” 10L 6.25” 20B, 18L 6.88” 10RJ 5.00” 20E,18H 7.00” 10WA 5.19” 20C 6.44” 11A, 11RA 5.31” 24C 12.38” 11C 4.88” 24D 9.38” 11WA 5.13” 24E 8.13” 12C 5.31” 24F 10.44” 12FD 5.19” 24G 8.00” 12FR 6.50” 26G 7.75” 12WA, 12RA 5.00” 28G 8.75” 12RJ 4.94” 30B NA
FINAL ASSEMBLY
After assembly of bowl assembly, reassemble pump as described in Section 3, Installation. Refer to Section 4, for startup and operation procedures.
SHAFT
TAPERLOCK
DRIVER
DISASSEMBLY
POSITION
IMPELLER
BOWL
Figure 17
4. Slide the first impeller over the shaft until it seats on the suction bowl/bell.
NOTE: If there are different diameter impellers, put the
large diameter impeller at the lower stage.
5. Insert a screwdriver into the slot in the taperlock (677) to spread the slot and slide the taperlock over the pump shaft. Hold the impeller against bowl and slide the taperlock into the impeller hub. Be sure the taperlocks have been cleaned and are dry.
6. Hold impeller firmly against the suction bowl/bell and drive the taperlock into place with a taperlock driver, (See Figure 17). After the impeller is secured in position, the top end of the taperlock should be 1/8” above the impeller hub.
7. Slide intermediate bowl (670) onto shaft and secure with capscrews provided.
8. Repeat preceding procedure for number of stages required.
9. Remove long capscrew and the assembly jig at the end of suction hub and check that the shaft rotates freely without dragging or binding. Also check for adequate lateral (end play).
29
Repair Parts – SECTION 7
CAUTION
ORDERING PARTS
When ordering spare or replacement parts, the pump serial number and size and type of pump must be given. This can be found on the nameplate furnished with the unit. Give the complete name and reference number of each part as indicated on the applicable sectional drawings, Figure 1 or Figure 2, and the quantity required.
STOCKING SPARE PARTS
Spare parts to be kept in inventory will vary according to service, field maintenance, allowable down time and number of units. A minimum inventory of one complete set of bearings and one spare of each moving part is suggested.
RETURNING PARTS
A completed Return Material Authorization (RMA) form must accompany all materials returned to the factory. The RMA forms can be obtained direct from the factory or through your local Goulds Water Technology representative. The RMA form must be filled in completely and forwarded as directed thereon. Parts being returned under warranty claim must have a complete written report submitted with the RMA form.
Returned material must be carefully
packaged to prevent transit damage ­the factory cannot assume any responsibility for parts damaged in transit.
30
Notes
31
Company warrants title to the product(s) and, except as noted with respect to items not of Company’s manufacturer, also warrants the
LIMITED WARRANTY
product(s) on date of shipment to Purchaser, to be of the kind and quality described herein, and free of defects in workmanship and material. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND CONSTITUTES THE ONLY WARRANTY OF COMPANY WITH RESPECT TO THE PRODUCT(S).
If within one year from date of initial operation, but not more than 18 months from date of shipment by Company of any item of product(s), Purchaser discovers that such item was not as warranted above and promptly notifies Company in writing thereof, Company shall remedy such nonconformance by, at Company’s option, adjustment or repair or replacement of the item and any affected part of the product(s). Purchaser shall assume all responsibility and expense for removal, reinstallation, and freight in connection with the foregoing remedies. The same obligations and conditions shall extend to replacement parts furnished by Company hereunder. Company shall have the right of disposal of parts replaced by it. Purchaser agrees to notify Company, in writing, of any apparent defects in design, material or workmanship, prior to performing any corrective action back-chargeable to the Company. Purchaser shall provide a detailed estimate for approval by the Company.
ANY SEPARATE LISTED ITEM OF THE PRODUCT(S) WHICH IS NOT MANUFACTURED BY THE COMPANY IS NOT WARRANTED BY COMPANY and shall be covered only by the express warranty, if any, of the manufacturer thereof.
THIS STATES THE PURCHASER’S EXCLUSIVE REMEDY AGAINST THE COMPANY AND ITS SUPPLIERS RELATING TO THE PRODUCT(S), WHETHER IN CONTRACT OR IN TORT OR UNDER ANY OTHER LEGAL THEORY, AND WHETHER ARISING OUT OF WARRANTIES, REPRESENTATIONS, INSTRUCTIONS, INSTALLATIONS OR DEFECTS FROM ANY CAUSE. Company and its suppliers shall have no obligation as to any products which have been improperly stored or handled, or which have not been operated or maintained according to instructions in Company or supplier furnished manuals.
LIMITATION OF LIABILITY – Neither Company nor its suppliers shall be liable, whether in contract or in tort or under any other legal theory, for loss of use, revenue or profit, or cost of capital or of consequential damages, or for any other loss or cost of similar type or for claims by Purchaser for damages of Purchaser’s customers. Likewise, Company shall not under any circumstances be liable for the fault, negligence, wrongful acts of Purchaser or Purchaser’s employees, or Purchaser other contractors or suppliers.
IN NO EVENT SHALL COMPANY BE LIABLE IN EXCESS OF THE SALES PRICE OF THE PART OR PRODUCT FOUND DEFECTIVE.
32
Xylem Inc. PO Box 5487 Lubbock, TX 79408 Phone: 1-806-763-7867 Fax: 1-800-453-4749 www.xyleminc.com/brands/gouldswatertechnology
Goulds is a registered trademark of Goulds Pumps, Inc. and is used under license.
© 2013 Xylem Inc. IMVICR01 April 2013
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