Pentair AURORA 3500 Series Instruction, Installation, Maintenance And Repair Manual
  1. Manuals
  2. Brands
  3. Pentair Manuals
  4. Water Pump
  5. AURORA 3500 Series
  6. Instruction, installation, maintenance and repair manual
Pentair AURORA 3500 Series Instruction, Installation, Maintenance And Repair Manual

Pentair AURORA 3500 Series Instruction, Installation, Maintenance And Repair Manual

Frames s, m, l and xl industrial process pumps
Hide thumbs
Table of Contents

Advertisement

Quick Links

3500 SERIES
MODEL 3550 ASME/ANSI B73.1
FRAMES S, M, L AND XL
INDUSTRIAL PROCESS PUMPS
INSTRUCTION, INSTALLATION, MAINTENANCE AND REPAIR MANUAL
NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible
party who maintains the system.
Part # A-03-339 | © 2015 Pentair Ltd. | 07/06/15

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AURORA 3500 Series and is the answer not in the manual?

Questions and answers

Shane
July 16, 2025

What is the recommended oil to use in the 3351 model?

0

Related Manuals for Pentair AURORA 3500 Series

Summary of Contents for Pentair AURORA 3500 Series

  • Page 1 INSTRUCTION, INSTALLATION, MAINTENANCE AND REPAIR MANUAL NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible party who maintains the system. Part # A-03-339 | © 2015 Pentair Ltd. | 07/06/15...

  • Page 2: Table Of Contents

    3500 SERIES / MODEL 3550 INDEX: Warnings ................................3 Introduction ................................. 4 Installation ............................... 4–8 Operation ................................. 8–9 Maintenance ..............................10 Disassembly & Assembly ..........................10–17 Installation Troubleshooting Guide ........................ 18 Cross Sectional Illustrations ........................19–20 Parts & Material Composition ........................21 Spare Parts ................................

  • Page 3: Warnings

    3500 SERIES / MODEL 3550 NOTICE: Warning: Toxic Fluid Handling Aurora model 3550 pumps MUST be installed only in systems that have been designed by qualified engineering personnel. Hazardous or toxic fluids must be flushed and properly The system MUST conform to all applicable local and national disposed of before performing service to the pump.

  • Page 4: Introduction

    3500 SERIES / MODEL 3550 INTRODUCTION: FOUNDATION: The foundation must maintain alignment under normal and abnormal conditions as this is one of the most RECEIVING SHIPMENT: Upon receiving shipment, check controlling aspects for the overall reliability of the pump. The items against packing list.
  • Page 5 3500 SERIES / MODEL 3550 • Operate the pump and driver for an adequate amount of time to achieve maximum operating temperature before the final or hot alignment is performed. • Repeated checks of alignment should be performed to ensure proper, smooth and continuous operation. •...
  • Page 6 3500 SERIES / MODEL 3550 Excess forces and moments on the pump may occur due to: A straight length of suction piping at least five times the diameter of the pipe is recommended directly in front of the • Thermal expansion and contraction of the piping indicating suction flange.
  • Page 7 3500 SERIES / MODEL 3550 ORIENTATION: Install an isolation valve to prevent the pump, at start-up, from running in excess of the pump curve by throttling while the • For suction above centerline: Eccentric – Flat side on system is being filled. The isolation valve is also used to isolate bottom.

  • Page 8: Operation

    3500 SERIES / MODEL 3550 Change oil every 12 months. Oil should be changed more BEARING FRAME: Use the optional cooling coil for water frequently under severe environmental conditions (dust, cooling of the bearing frame. The cooling coil is required only moisture, corrosive atmospheres, etc.).
  • Page 9 3500 SERIES / MODEL 3550 a. When making adjustments, unseat the mechanical seal START-UP: from the shaft. NOTICE: Before start-up, confirm that the shaft turns b. Check total clearance. Confirm that it follows the given freely by hand (clockwise when facing the coupling end). instructions.

  • Page 10: Maintenance

    3500 SERIES / MODEL 3550 Tag valves as standard practice. • Screwdriver • Snap-Ring Pliers • Torque Wrench with Sockets Warning: • Wrenches DISASSEMBLY: When handling hazardous and/or toxic fluids, use personal protection equipment to avoid personal injury. Pumpage must be handled and disposed of in accordance with Warning: applicable environmental regulation.
  • Page 11 3500 SERIES / MODEL 3550 8. Use frame adapter (108) or frame (228) for placing hoisting 3. Quickly turn impeller counterclockwise (as viewed from strap. impeller end of shaft), impacting wrench handle on the workbench or solid block until impeller loosens. 9.
  • Page 12 3500 SERIES / MODEL 3550 FRAME ADAPTER REMOVAL – M, L, XL: 3. Finish disassembly by removing outboard labyrinth seal (332) from bearing housing (134). If necessary, remove Remove the following components in the order listed below: O-rings (497F, 497G). POWER END (XL MODEL) DISASSEMBLY: •...
  • Page 13 3500 SERIES / MODEL 3550 • Localized wear or grooving greater than 1/8" (3.2mm) deep REASSEMBLY: • Pitting greater than 1/8" (3.2mm) deep • Check case gasket seat surface for deformities or Rotating Element and Bearing Frame Assembly irregularities S, M Models IMPELLER: Repair or replace the following impeller (101) NOTE: Apply thread sealant to clean pipe threads and components if they exceed the following criteria:...
  • Page 14 3500 SERIES / MODEL 3550 8. Install new O-ring (496). 4. Note orientation when placing bearing clamp ring (253B) over shaft (122). 9. Use oil to coat the outside of outboard bearing (112) and bearing housing (134) bore. 5. Install the outboard bearings (112) on shaft (122). 10.
  • Page 15 3500 SERIES / MODEL 3550 NOTE: Consult Appendix V (page 24) for detailed NOTE: If necessary, tighten locknut to align the closest labyrinth seal installation instructions. tab of lock washer with slot on locknut. NOTE: Keyway edges must be free of burrs. 5.
  • Page 16 3500 SERIES / MODEL 3550 2. Check shaft end play by moving shaft forward and shaft wrench (counterclockwise as viewed from impeller backward by hand, taking note of indicator movement. If end of shaft) off bench then slam it down (clockwise as total indicator reading is greater than the values listed in viewed from impeller end of shaft).
  • Page 17 3500 SERIES / MODEL 3550 FOR OUTSIDE MOUNTED SEALS: 7. Install the packing and gland. REINSTALL BACK PULL-OUT ASSEMBLY 11. Install the mechanical seal on shaft (122) or, if applicable, ALL MODELS (S, M, L & XL): sleeve (126) following the seal manufacturer’s instructions. Install sleeve with seal if applicable.

  • Page 18: Installation Troubleshooting Guide

    3500 SERIES / MODEL 3550 INSTALLATION TROUBLESHOOTING GUIDE Fault Possible Cause Remedy Excessive shaft end play. Bearing internal clearance too • Reduce speed level. great. Snap ring loose in bearing • Reseat. housing groove. Excessive shaft/sleeve run-out. Sleeve worn. • Replace. Shaft bent.

  • Page 19: Cross Sectional Illustrations

    3500 SERIES / MODEL 3550 S – PUMP CROSS SECTIONAL 370C 382 408H 408H 497F 497G 370D 408H 408M 408L 408A 408J 408H 497J 497H 418 370H 357K 360Q 361A M – PUMP CROSS SECTIONAL 370C 408H 361A 408H 370B 360D 497F 497J 497H...
  • Page 20 3500 SERIES / MODEL 3550 L – PUMP CROSS SECTIONAL 370C 408H 253B 236A 408H 370B 360D 497F 497G 168 497J 497H 370D 370H 357K 360Q 408H 248 408J 370F 408M 408L 408A 319 408H 469B 496 112 XL – PUMP CROSS SECTIONAL 370C 408H 408H...

  • Page 21: Parts & Material Composition

    3500 SERIES / MODEL 3550 PARTS & MATERIAL COMPOSITION Item Req’d Per Hastelloy Number Pump Part Name Iron 316SS Alloy 20 CD4MCu Titanium B&C Casing Ductile Iron 316SS Alloy 20 CD4MCu Titanium Hastelloy B&C Impeller Ductile Iron 316SS Alloy 20 CD4MCu Titanium Hastelloy B&C...
  • Page 22 3500 SERIES / MODEL 3550 APPENDIX I: IMPELLER CLEARANCE ADJUSTMENT: TABLE 1: FEELER GAUGE METHOD: Impeller Clearance at Ambient for Various Service Temps. in inches (cm) 1. Lock out power supply to motor. Pump Frame Size Pumpage 2. Remove coupling guard and spacer. Temperature –20º...
  • Page 23 3500 SERIES / MODEL 3550 3. Once coupling guard half (pump end) is located around end DISASSEMBLY: Remove the coupling guard for certain plate, tighten it securely with a bolt, nut and two washers maintenance and adjustments to the pump. Specific instances through the round hole at front end of guard half.
  • Page 24 3500 SERIES / MODEL 3550 APPENDIX IV Bolt Torque, ft.-lbs. (Nm) Location Frame All Materials, All Models Lube 6" S 115 (156) 173 (235) 5/8" 8" S 58 (79) 87 (118) 1/2" Casing Bolts (370) or Casing Nuts (425) M, L 115 (156) 173 (235) 5/8"...
  • Page 25 3500 SERIES / MODEL 3550 APPENDIX VI: PRESSURE – TEMPERATURE RATINGS: Maximum Working Pressure Limits Models S, M, L; Class 150 Flanges temperature – degrees Celcius Maximum Working Pressure Limits –240 –200 –160 –120 –80 –40 Models S, M, L; Class 150 Flanges temperature –...
  • Page 26 3500 SERIES / MODEL 3550 APPENDIX VII: PARTS INTERCHANGEABILITY CHART: Impellers and casings are different for each pump size. Stuffing box covers and adapters (except for “S” frames) are shared by casing class. Check interchangeability chart for clarification. POWER SEAL POWER SEAL ADAPTER...
  • Page 27 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 28: Warranty

    WARRANTY Seller warrants equipment (and its component parts) of its own manufacture against defects in materials and workmanship under normal use and service for one (1) year from the date of installation or start-up, or for eighteen (18) months after the date of shipment, whichever occurs first.

This manual is also suitable for:

Aurora 3550 asme/ansi b73.1

Table of Contents