Xylem G&L A-C 8300 Series Instruction Manual
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Xylem G&L A-C 8300 Series Instruction Manual

Xylem G&L A-C 8300 Series Instruction Manual

Base mounted centrifugal pump
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INSTRUCTION MANUAL
AC5658D
G&L Pumps Series A-C 8300
Base Mounted Centrifugal
Pump

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Summary of Contents for Xylem G&L A-C 8300 Series

  • Page 1 INSTRUCTION MANUAL AC5658D G&L Pumps Series A-C 8300 Base Mounted Centrifugal Pump...

  • Page 3: Table Of Contents

    Table of Contents Table of Contents 1 Introduction and Safety......................3 1.1 Introduction.......................... 3 1.2 Safety............................. 3 1.2.1 Safety terminology and symbols.................3 1.2.2 Safety instruction decals....................4 1.3 User safety..........................5 1.3.1 Wash the skin and eyes....................6 1.4 Protecting the environment....................6 2 Transportation and Storage......................
  • Page 4 Table of Contents 6 Maintenance..........................27 6.1 Maintenance schedule...................... 27 6.2 Flood-damaged pumps....................28 6.3 Bearing maintenance......................28 6.3.1 Regrease the grease-lubricated bearings............... 28 6.3.2 Lubricating grease requirements................29 6.4 Shaft-seal maintenance..................... 29 6.4.1 Mechanical seal maintenance................... 29 6.5 Cleaning without dismantling the pump................ 29 6.6 Disassembly........................30 6.6.1 Disassembly precautions...................

  • Page 5: Introduction And Safety

    This includes any modification to the equipment or use of parts not provided by Xylem. If there is a question regarding the intended use of the equipment, please contact a Xylem representative before proceeding.

  • Page 6: Safety Instruction Decals

    1 Introduction and Safety Hazard level Indication A hazardous situation which, if not avoided, could result WARNING: in death or serious injury A hazardous situation which, if not avoided, could result CAUTION: in minor or moderate injury Notices are used when there is a risk of equipment NOTICE: damage or decreased performance, but not personal injury.

  • Page 7: User Safety

    1 Introduction and Safety DO NOT RUN PUMP DRY, SEAL DAMAGE MAY OCCUR. INSPECT PUMP SEAL REGULARLY FOR LEAKS, REPLACE AS REQUIRED. LUBRICATION REQUIREMENTS CONSULT MANUALS. PUMP: POLYUREA-BASED GREASE FAILURE TO FOLLOW INSTRUCTIONS COULD RESULT IN INJURY OR PROPERTY DAMAGE. P2002458 Make sure that all safety instruction decals are always clearly visible and readable.

  • Page 8: Wash The Skin And Eyes

    • Clean-up of spills Exceptional sites CAUTION: Radiation Hazard Do NOT send the product to Xylem if it has been exposed to nuclear radiation, unless Xylem has been informed and appropriate actions have been agreed upon. Recycling guidelines Always follow local laws and regulations regarding recycling.

  • Page 9: Transportation And Storage

    2 Transportation and Storage 2 Transportation and Storage 2.1 Examine the delivery 2.1.1 Examine the package 1. Examine the package for damaged or missing items upon delivery. 2. Record any damaged or missing items on the receipt and freight bill. 3.
  • Page 10 2 Transportation and Storage • Pump end only (bare pump) • Pump less motor • Pump, motor, & baseplate Use the following recommended ways of handling HSC pump assemblies. • The pump assembly should remain horizontal during transport and lifting. •...

  • Page 11: Storage Requirements

    2 Transportation and Storage Figure 2: Lift using a forklift Storage location The product must be stored in a covered and dry location free from heat, dirt, and vibrations. NOTICE: Protect the product against humidity, heat sources, and mechanical damage. NOTICE: Do not place heavy weights on the packed product.

  • Page 12: Product Description

    3 Product Description 3 Product Description 3.1 General description Description The pump is a centrifugal, frame-mounted pump. The following pump features make it easy to install, operate, and service: • High efficiency • Rugged construction • Compact design • Foot-mounted volute •...

  • Page 13: Nameplate Information

    3 Product Description Mechanical seal specifications Seal type Parameter Value Standard self-flushing pH range limits for BUNA pH 7–9 Liquid temperature range that -20˚F to 225˚F (-29˚C to 107˚C) complies with the pH range limits for BUNA pH range limits for EPT pH 7–11 Liquid temperature range that -20˚F to 250˚F (-29˚C to 121˚C)

  • Page 14: Installation

    (See the nameplate on the drive unit to select properly-sized overloads.) NOTICE: Supervision by an authorized Xylem representative is recommended to ensure proper installation. Failure to do so may result in equipment damage or decreased performance. Evaluate the installation in order to determine that the Net Positive Suction Head Available...

  • Page 15: Typical Installation

    4 Installation Guideline Explanation/comment Take into consideration the occurrence of unwanted noise The best pump location for noise and vibration and vibration. absorption is on a concrete floor with subsoil underneath. If the pump location is overhead, undertake special Consider a consultation with a noise specialist. precautions to reduce possible noise transmission.

  • Page 16: Level The Base On A Concrete Foundation

    4 Installation Diagram • An optional 4–inch long tube around the bolts at the top of the concrete allows some flexibility in bolt alignment to match the holes in the baseplate. • Allow enough bolt length for grout, shims, lower baseplate flange, nuts, and washers. 1.

  • Page 17: Grout The Baseplate

    4 Installation 5. Check to make sure that the piping can be aligned to the pump flanges without placing pipe strain on either flange. 6. Grout the baseplate. See “Grout the baseplate.” 4.1.5 Grout the baseplate Required equipment: • Cleaners: Do not use an oil-based cleaner because the grout will not bond to it. See the instructions provided by the grout manufacturer.

  • Page 18: Align The Pump Using A Straight Edge And Calipers

    4 Installation Make sure the shaft extends into the hubs at least 0.8 times the diameter of the shaft. 6. Lightly fasten the hubs to the shafts in order to prevent them from moving during alignment. 7. Align the hubs to the values shown in Maximum allowable misalignment for couplings. You can perform alignment with lasers, dial indicators, or with a straight edge and calipers.

  • Page 19: Align The Pump Using A Dial Indicator

    4 Installation In the following Figure, the arrows show the angular misalignment: Figure 5: Check the alignment using calipers 4.2.3 Align the pump using a dial indicator • Make sure that each hub is secured to its respective shaft and that all connecting and/or spacing elements are removed at this time.

  • Page 20: Final Alignment

    4 Installation Resilient separator Figure 6: Pump alignment via dial indicator d) Set the dial to zero. e) Rotate both coupling halves together and make sure that the index lines remain matched. f) Reposition the equipment until the offset is within the permissible value. 2.

  • Page 21: Coupler Limitations

    4 Installation 4.2.7 Coupler limitations Brand Suitable for Minimum Allowable installation misalignment limits Y Dimension Maximum Minimum variable speed recommended (inch) temperature temperature Coupler size Parallel (inch) Angular (inch application speed or degree) 0.010 0.035 1.188 0.010 0.043 1.500 0.015 0.056 1.938 0.015...

  • Page 22: Suction Piping Checklist

    4 Installation Check Explanation/Comment Always run piping to the pump. Do not move pump to pipe. This could make final alignment impossible. Check that the suction and discharge piping are This helps to avoid strain on the pump when the flange supported independently near the pump and properly bolts are tightened.
  • Page 23 4 Installation Check Explanation/comment Checked (Optional) You can install a short section of This facilitates the cleansing of the liquid passage of pipe adjacent to the suction flange such as the pump without dismantling the pump. With this Dutchman or a spool piece that is designed arrangement, anything that clogs the impeller is so that it can be readily dropped out of the accessible with the removal of the spool piece or pipe...
  • Page 24 4 Installation 1. Air pocket Figure 10: Suction pipe installed with a reducer – incorrect 1. Air pocket Figure 11: Incorrect 1. No air pockets 2. Gradual rise Figure 12: Correct 1. No air pockets 2. Eccentric reducer 3. Gradual rise Figure 13: Gradual rise to the pump –...

  • Page 25: Commissioning, Startup, Operation, And Shutdown

    5 Commissioning, Startup, Operation, and Shutdown 5 Commissioning, Startup, Operation, and Shutdown 5.1 Preparation for startup WARNING: • Failure to follow these precautions before you start the unit will lead to serious personal injury and equipment failure. • Do not operate the pump below the minimum rated flows or with the suction or discharge valves closed.

  • Page 26: Priming

    5 Commissioning, Startup, Operation, and Shutdown 9. Assure that pump is full of liquid (see priming) and all valves are properly set and operational, with the discharge valve closed, and the suction valve open. 10.Check rotation. Be sure that the driver operates in the direction indicated by the arrow on the pump casing as serious damage can result if the pump is operated with incorrect rotation.

  • Page 27: Freezing Protection

    5 Commissioning, Startup, Operation, and Shutdown 5.1.6 Freezing protection NOTICE: Do not expose an idle pump to freezing conditions. Drain all liquid that is inside the pump and connected pipes. Failure to do so can cause liquid to freeze and damage the pump. Pumps that are shut down during freezing conditions should be protected by one of the following methods: •...
  • Page 28 5 Commissioning, Startup, Operation, and Shutdown Figure 17: Main joint bolts G&L Pumps Series A-C 8300 Base Mounted Centrifugal Pump INSTRUCTION MANUAL...

  • Page 29: Maintenance

    6 Maintenance 6 Maintenance 6.1 Maintenance schedule CAUTION: Shorten the inspection intervals if the pumped liquid is abrasive or corrosive, or if the environment is classified as potentially explosive. NOTICE: This timetable assumes that the unit has been constantly monitored after startup. Adjust the timetable for any extreme or unusual applications or conditions.

  • Page 30: Flood-Damaged Pumps

    6 Maintenance figures of the last test. This is especially important where the pumped liquid tends to form a deposit on internal surfaces. • Inspect foot valves and check valves. A faulty foot or check valve will cause poor performance. The check valve safeguards against water hammer when the pump stops.

  • Page 31: Lubricating Grease Requirements

    6 Maintenance 4. If needed, stop pump and wipe off excess grease. 5. Restart pump. The bearing temperature usually rises after you regrease due to an excess supply of grease. Temperatures return to normal in about two to four operating hours as the pump runs and purges the excess grease from the bearings.

  • Page 32: Disassembly

    6 Maintenance 6.6 Disassembly 6.6.1 Disassembly precautions This manual clearly identifies accepted methods for disassembling units. These methods must be adhered to. WARNING: • Make sure that the pump is isolated from the system and that pressure is relieved before you disassemble the pump, remove plugs, open vent or drain valves, or disconnect the piping.

  • Page 33: Replace The Mechanical Seals And Bearings Without Removing The Upper Half Of The Casing

    6 Maintenance 1. Outer guard 2. Inner guard 3. Attach the support bracket inline with the bolt 4. Support bracket 5. Nut 6. Lockwasher 7. Capscrew 8. Flat washer 9. Spacer washer 10.Option used instead of the spacer where overall guard length exceeds 12 in. (30 cm) or the guard width is over 10 in.
  • Page 34 6 Maintenance the pump shaft. For non-spacer couplers, loosen set screws and slide flanges back on shafts and remove rubber element. 3. Remove the capscrews from each of the bearing housings and remove the bearing housings by placing two 2.0” long full-threaded capscrews or allen set screws in the jackscrew holes provided.

  • Page 35: Pre-Assembly Inspections

    6 Maintenance CAUTION: Do not reuse ball bearings. 9. Remove the mechanical seal head form the pump shaft. NOTE: To ease the removal of the mechanical seal heads, you may want to use 2 allen wrenches as hooks or form hooks from wire. 10.Drive the lip-seals, the mechanical seal seats, from each of the gland plates by tapping on them from the rear.

  • Page 36: Dimensions

    6 Maintenance 6.8 Dimensions Cross Section Figure 19: Cross section 6.9 Reassembly 6.9.1 Assembly of the mechanical seals and bearings without removing the upper half of the casing NOTE: All bearings, O-rings, and lip-seals should be replaced with new parts during assembly.
  • Page 37 6 Maintenance 1. Press the stationary mechanical seal seat into the gland plate until it bottoms out against the bore. Lightly lubricate the bore to ease assembly. (See photo below) 2. Press a new lip seal into the gland plate. Before installing the lip seal, lubricate the lip- seal with lightweight oil.

  • Page 38: Reassembly Of The Pump When It Is Required To Remove The Rotating Element

    6 Maintenance CAUTION: Do not exceed a temperature of 275°F. 7. Fill up the lip seal cavity with approximately .50 ounces of grease. 8. Using gloves slide the heated bearing onto the shaft against the shaft shoulder. (See photo below) 9.
  • Page 39 6 Maintenance 1. Before assembling the rotating element prepare the casing and install the casing gaskets to the parting line. 2. Clean the gasket surfaces of the casing. Apply Scotch 3M-77 spray adhesive or equivalent to the lower half of the casing. 3.
  • Page 40 6 Maintenance 10.Press the stationary mechanical seal seats into both of the gland plates. Lightly lubricate the gland plates to ease assembly. See photo below. 11.Press new lip seals into the gland plates. Before installing the lip seals, lubricate the lip seals with lightweight oil.
  • Page 41 6 Maintenance 16.Slide the stuffing box, with the gland plate, fully on the shaft, being very careful that the head and set of the mechanical seal do not get damaged. Compress the seal springs only as far as required to install the bearings. 17.Fill lip seal cavity with approximately .50 ounces of grease.
  • Page 42 6 Maintenance 21.Allow the bearing to cool to room temperature. Coat the exposed sides of the bearing with two or three ounces of recommended grease. 22.Coat the inside of the bearing housing with grease and slide it into place over the bearing.

  • Page 43: Install The Hex Coupling Guard

    6 Maintenance 27.Locate the upper half of the casing into place using the tapered dowel pins and install the casing main joint bolts. See photo below. The casing joints should be tightened to the following torques: 140 ft-lb minimum for 5/8”-11 head cap screws (Grade 5); 350ft.-lb minimum for 7/8”-9 Ferry Cap Counterbore screws (Grade 8).

  • Page 44: Assembly References

    6 Maintenance If... Then... The pump does not have a motor Insert the spacer washer between the holes located closest to the motor in saddle support bracket the outer guard and install the two remaining capscrews. Do not tighten the capscrews. 6.
  • Page 45 6 Maintenance 6.9.4.3 Dealer servicing If trouble occurs that cannot be rectified, contact your local sales and service representative and be prepared to provide this information: 1. Complete nameplate data of pump and motor 2. Suction and discharge pipe pressure gauge readings 3.

  • Page 46: Troubleshooting

    7 Troubleshooting 7 Troubleshooting 7.1 Operation troubleshooting Between regular maintenance inspections, be alert for signs of motor or pump trouble. Correct any trouble immediately and avoid costly repair and shutdown. Symptom Cause Remedy Lack of prime Fill pump and suction pipe completely with liquid.
  • Page 47 7 Troubleshooting Symptom Cause Remedy Air leaks in suction piping If liquid pumped is water or other non-explosive, and explosive gas or dust is not present, test flanges for leakage with flame or match, or by plugging inlet and putting line under pressure.
  • Page 48 7 Troubleshooting Symptom Cause Remedy Mechanical defects See “Defective impeller” and “Foot valve too small or partially obstructed”. Obstruction in liquid passages. Dismantle pump and inspect passages of impeller and casing. Remove obstruction. Air or gases in liquid. (Test in May be possible to over rate pump to laboratory, reducing pressure on point where it will provide adequate...
  • Page 49 7 Troubleshooting Symptom Cause Remedy Suction inlet not immersed enough. If inlet cannot be lowered, or if eddies through which air is sucked persist when it is lowered, chain a board to suction pipe. It will be drawn into eddies, smothering the vortex. Liquid heavier (in either viscosity or Use larger driver.

  • Page 50: Product Warranty

    8 Product warranty 8 Product warranty Commercial warranty Warranty. For goods sold to commercial buyers, Seller warrants the goods sold to Buyer hereunder (with the exception of membranes, seals, gaskets, elastomer materials, coatings and other "wear parts" or consumables all of which are not warranted except as otherwise provided in the quotation or sales form) will be (i) be built in accordance with the specifications referred to in the quotation or sales form, if such specifications are expressly made a part of this Agreement, and (ii) free from defects in material and...
  • Page 51 8 Product warranty Limited consumer warranty Warranty. For goods sold for personal, family or household purposes, Seller warrants the goods purchased hereunder (with the exception of membranes, seals, gaskets, elastomer materials, coatings and other "wear parts" or consumables all of which are not warranted except as otherwise provided in the quotation or sales form) will be free from defects in material and workmanship for a period of one (1) year from the date of installation or eighteen (18) months from the product date code, whichever shall occur first, unless a...
  • Page 52 8 Product warranty To make a warranty claim, check first with the dealer from whom you purchased the product or visit www.xyleminc.com for the name and location of the nearest dealer providing warranty service. G&L Pumps Series A-C 8300 Base Mounted Centrifugal Pump INSTRUCTION MANUAL...
  • Page 56 For more information on how Xylem can help you, go to www.xylem.com Xylem Inc. Visit our Web site for the latest version of this document...

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