ITT Goulds Pumps 3700 Installation, Operation And Maintenance Instructions
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ITT Goulds Pumps 3700 Installation, Operation And Maintenance Instructions

10th edition
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In stal la tion, Op era tion and Main te nance In struc tions
Model 3700 10th Edi tion (ISO 13709)
These instructions also apply to Model 3710.

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Summary of Contents for ITT Goulds Pumps 3700

  • Page 1 In stal la tion, Op era tion and Main te nance In struc tions Model 3700 10th Edi tion (ISO 13709) These instructions also apply to Model 3710.
  • Page 2 Pump Safety Tips Safety Apparel: Operation: • Insulated work gloves when handling hot • Do not operate below minimum rated flow, or bearings or using bearing heater with suction/discharge valves closed • Heavy work gloves when handling parts with • Do not open vent or drain valves, or remove sharp edges, especially impellers plugs while system is pressurized •...
  • Page 3 ITT Industries - Goulds Pumps shall not be liable for physical injury, damage or delays caused by a failure to observe the instructions for Installation, Operation, and Maintenance contained in this manual.
  • Page 4 3700-10th IOM 12/04...
  • Page 5 TABLE OF CONTENTS PAGE SECTION SAFETY GEN ERAL IN FOR MA TION IN STAL LA TION OP ER A TION PRE VEN TIVE MAIN TE NANCE DIS AS SEM BLY & RE AS SEM BLY SPARE PARTS AP PEN DIX 3700-10th IOM 12/04...
  • Page 6 3700-10th IOM 12/04...

  • Page 7: Table Of Contents

    NOTE: Operating procedure, condition, etc. maintenance personnel must realize this and follow which is essential to observe. safety measures. ITT Industries - Goulds Pumps shall not be liable for physical injury, damage or EXAMPLES delays caused by a failure to observe the instructions in this manual.

  • Page 8: General Precautions

    GENERAL PRECAUTIONS WARN ING ALWAYS lock out power to the driver before Personal injuries will result if procedures performing pump maintenance. outlined in this manual are not followed. NEVER operate pump without safety devices installed. NEVER operate pump without coupling guard correctly installed.

  • Page 9: Atex Iden Ti Fi Ca Tion

    This includes any modification to the pump unit is operated within its intended use. All equipment or use of parts not provided by ITT/Goulds. instructions within this manual must be followed at all If there is any question regarding the intended use of times.
  • Page 10 3700-10th IOM 12/04...
  • Page 11 GENERAL INFORMATION PUMP DE SCRIP TION ......11 NAME PLATE IN FOR MA TION......12 RE CEIV ING THE PUMP .
  • Page 12 NAMEPLATE INFORMATION Fig. 1 Every pump has a Goulds nameplate that provides are expressed in English units. Note the format of information about the pump. The nameplate is located pump size: Discharge x Suction - Nominal Impeller on the pump casing. Diameter in inches, for example, 2x3-13 (Fig.
  • Page 13 RECEIVING THE PUMP Inspect the pump as soon as it is received. Carefully check that everything is in good order. Make notes of damaged or missing items on the receipt and freight bill. File any claims with the transportation company as soon as possible.
  • Page 14 3700-10th IOM 12/04...

  • Page 15: Gen Eral

    INSTALLATION GEN ERAL ........15 SITE/FOUN DA TION ......15 BASE PLATE IN STAL LA TION PRO CE DURE.

  • Page 16: Baseplate Installation Procedure

    NOTE: All equipment being installed must be properly grounded to prevent unexpected static electric discharge. The location and size of foundation bolts are shown on the outline assembly drawing provided with the pump data package. Foundation bolts commonly used are sleeve type (Fig.

  • Page 17: Alignment And Alignment Criteria

    Equipment mounting surfaces should be utilized NOTE: Do not use oils or liquid wax. to establish level. 5. Thread nuts on foundation bolts and hand tighten. 4. Coat portions of leveling screws that will contact grout with a non-bonding compound such as paste wax to facilitate their removal after grouting.

  • Page 18: Alignment Troubleshooting

    ALIGNMENT TROUBLESHOOTING Prob lem Prob able Cause Rem edy Loosen pump hold down bolts and slide pump Driver feet bolt bound. and driver un til hori zontal align ment is achieved. Can not ob tain hori zon tal (Side- to- Side) Determine which cor ner(s) of the base plate are align ment, an gu lar or par al lel Baseplate not lev eled...

  • Page 19: Piping

    PIPING Guidelines for piping are given in the “Hydraulic exceed the limits stated in API Standard 610, Institute Standards,” available from: 10th Edition (ISO 13709). Hydraulic Institute 6. Piping must not be connected to the pump until 30200 Detroit Road the grout has thoroughly hardened and the Cleveland, OH 44145-1967 foundation bolts, as well as driver and pump hold-...

  • Page 20: Discharge Piping

    bypass line to preclude bypassing excessive flows. Suction Lift Conditions Consult nearest sales office or factory for assistance 1. Suction pipe must be free from air pockets. in sizing orifice. 2. Suction piping must slope upwards to pump. An automatic recirculation control valve and/or 3.

  • Page 21: Prepa Ra Tion For Start- Up

    OPERATION PREPA RA TION FOR START- UP ..... . . 21 Check ing Ro ta tion ......21 Coupling Pump and Driver .

  • Page 22: Lubricating Bearings

    Connection of Sealing Liquid WARN ING NOTE: The mechanical seal must have an Never operate a pump without coupling guard appropriate seal flush system. Failure to do properly installed. Refer to Appendix I for so will result in excess heat generation and coupling guard installation instructions.
  • Page 23 Fig. 10 Suction Supply Below Pump A foot valve and outside source of liquid may be used to prime the pump. Outside source of liquid can come Fig. 12 from a priming pump, pressurized discharge line, or other supply (Fig. 11 and 12). 1.

  • Page 24: Start-Up Pre Cau Tions

    3. Variable speed drivers should be brought to rated CAUTION speed as quickly as possible. 4. Variable speed drivers should not be adjusted or START-UP PRE CAU TIONS checked for speed governor or overspeed trip settings while coupled to the pump at initial NOTE: Ensure that pump and systems are start-up.

  • Page 25: Operation

    OPERATION GENERAL CONSIDERATIONS 7. Monitor all gauges to ensure pump is running at or near rating and that suction screen CAUTION (when used) is not clogged. Always vary capacity with regulating valve in the discharge line. NEVER throttle flow from the OPERATING AT REDUCED CAPACITY suction side.

  • Page 26: Shutdown

    SHUTDOWN 1. Slowly close discharge valve. WARN ING 2. Shut down and lock out driver to prevent When handling hazardous and/or toxic fluids, accidental rotation. proper personal protective equipment is required. If pump is being drained, precautions must be taken to prevent physical injury. Pumpage must be handled and disposed of in conformance with applicable regulations.
  • Page 27 PREVENTIVE MAINTENANCE GEN ERAL COM MENTS......27 MAIN TE NANCE SCHED ULE ......27 Rou tine Main te nance .
  • Page 28 MAINTENANCE OF BEARINGS NOTE: Do not insulate bearing housings as this can result in excess heat generation, sparks and premature failure. RING OIL LUBRICATED BEARINGS Ring oil lubricated ball bearings are standard on Model 3700 8th Edition pumps. WARN ING Pumps are shipped without oil.
  • Page 29 Connect oil mist supply lines to inlet connections OPTIONAL PURE OR PURGE OIL MIST (Fig. 14). LUBRICATED BEARINGS Connect drain/vent lines to outlet connections. WARN ING Pumps are shipped without oil. Oil mist lubricated bearings must be lubricated at the job site. The same oil requirements applicable to ring oil lubricated bearings also apply to oil mist lubricated bearings.
  • Page 30 TROUBLESHOOTING Prob lem Prob able Cause Rem edy Check that pump and suction line are full of liquid. Pump not primed. Reprime pump. Suction line clogged. Remove obstructions. No liquid delivered. Impeller clogged with foreign material. Back flush pump to clean impeller. Foot valve or suction pipe opening not Consult factory for proper depth.
  • Page 31 DISASSEMBLY & REASSEMBLY RE QUIRED TOOLS ......31 DIS AS SEM BLY ....... . 31 IN SPEC TIONS .
  • Page 32 installation and disassembly instructions in Remove and discard casing gasket (351). Appendix I. (Replace this with new gasket during reassembly.) Remove coupling spacer. Follow coupling manufacturer’s instructions for assistance. Secure to prevent movement during transport. REMOVAL OF BACK PULL-OUT ASSEMBLY Transport back pull-out assembly to a clean work area for further disassembly.
  • Page 33 REMOVAL OF SEAL CHAMBER COVER Loosen and remove seal chamber Loosen and remove gland stud nuts (355) cover/bearing frame bolts (370H). (Fig. 19). Separate seal chamber cover (184) from Slide cartridge mechanical seal away from seal bearing frame (228) by tapping on cover flange chamber cover (184).
  • Page 34 SA and MA thrust bearing end covers are REMOVAL OF OPTIONAL sealed to the bearing frame with a gasket WATER JACKET COVER (360A). Suspend seal chamber cover (184) from lifting Remove and discard thrust bearing end cover sling, or firmly support seal chamber cover in a shims (390C).
  • Page 35 Fig. 22 CAUTION Do NOT remove bearings from shaft unless they are to be replaced. Bend locking tang of thrust bearing lockwasher (382) from notch in bearing locknut (136) (Fig. 22). NOTE: Save bearings for inspection. Loosen and remove thrust bearing locknut (136) and lockwasher (382).
  • Page 36 Remove and discard radial bearing end cover Loosen thrust fan set screw (222). SA & MA gasket (360). Replace this with a new gasket pumps thrust fan sits on coupling diameter. during reassembly. (Omit on SA & MA pumps.) Slide thrust fan (123E) off shaft (122). Press Radial and Thrust INPRO (123 &...
  • Page 37 INSPECTIONS IMPELLER (101) Model 3700 8th Edition parts must be inspected to the following criteria before they are reassembled to Inspect impeller vanes for damage. Replace if ensure the pump will run properly. Any part not grooved deeper than 1.6 mm ( in.) or if worn meeting the required criteria should be replaced.
  • Page 38 BALL BEARINGS (112, 168) OIL RINGS (114) Ball bearings should be inspected for Oil rings must be as round as possible to function contamination and damage. The condition of properly. Replace oil rings if they are worn, distorted the bearings will provide useful information on and/or damaged beyond reasonable repair.
  • Page 39 Ta ble 5 Model 3700 Bear ing Fits & Tolerances (SI Units) According to ISO 286 (ANSI/ABMA Stan dard 7) Group and Di mensions (mm) Lo ca tion De scrip tion MX, LA 50.013 60.015 55.015 65.015 75.015 90.018 Shaft O.D. 50.002 60.002 55.002...
  • Page 40 Ta ble 5A Model 3700 Bear ing Fits & Tolerances (USA Units) According to ISO 286 (ANSI/ABMA Stan dard 7) Group and Di mensions (inches) Lo ca tion De scrip tion MX, LA 1.9690 2.3628 2.1659 2.5597 2.9534 3.5440 Shaft O.D. 1.9686 2.3623 2.1654...
  • Page 41 NOTE: For operating temperatures above 260° C (500° F) and for materials with greater galling tendencies (e.g. stainless steel), increase diametral clearance dimensions by 0.13 mm (.005 in.). SEAL CHAMBER COVER (184) Seal chamber cover is available in two versions: one (optional) has a cooling chamber and water jacket cover (490) and the other (standard) does not.
  • Page 42 BEARING FRAME (228) GASKETS, O-RINGS, SHIMS AND SEATS Visually inspect bearing frame for damage and NOTE: Spiral wound gaskets should not be reused. cracks. Replace all gaskets, O-rings and shims at each Check frame inside surfaces for rust, scale or overhaul / disassembly.
  • Page 43 RENEWAL OF WEAR PARTS REPLACEMENT OF SEAL CHAMBER COVER BUSHING Seal chamber cover bushing (125) is held in place by a press fit and locked by three set screws. Removal of Bushing (125) Remove set screws. Press bushing (125) out of fit toward bearing frame side of seal chamber cover (184) bore (Fig.
  • Page 44 Heat new impeller wear rings (202 and 203) to 82° - 93° C (180° - 200° F) using a uniform method for heating (e.g. - oven) and place on impeller (101) wear ring seats (Fig. 35). CAUTION Use insulated gloves to handle rings. Rings will be hot and can cause physical injury.
  • Page 45 clearances as indicated in Table 6 and c. Install impeller washer (199). subsequent note. d. Secure impeller (101) firmly with impeller screw (198) or impeller nut (304). Repeat steps 7 and 8 for the seal chamber wear ring (230). NOTE: Impeller screw has LEFT HAND threads. e.
  • Page 46 REASSEMBLY Ta ble 7 Maximum Torque Val ues for Model 3700 Fas teners Values in N-m (ft.-lb.) Non- API Con struc tion - API Des ig na tion Ma te rial Item Group/ Modi fied Num ber De scrip tion Size S-8N A-8N...
  • Page 47 Fig. 41 Install radial (inboard) bearing (168) on shaft (122) (Fig. 41). ASSEMBLY OF STANDARD RING OIL OR OPTIONAL PURGE OIL MIST NOTE: There are several methods used to LUBRICATED POWER END install bearings. The recommended method is to use an induction heater that heats as well as This section covers assembly of standard ring oil or demagnetizes the bearings.
  • Page 48 CAUTION The Model 3700 8th Edition uses duplex bearings mounted back-to-back. Make sure orientation of the bearings is correct. NOTE: There are several methods used to install bearings. The recommended method is to use an induction heater that heats as well as demagnetizes the bearings.
  • Page 49 CAUTION Do not over tighten thrust bearing end cover/bearing frame screws. Determine axial end play as follows: a. Mount dial indicator as shown in Fig. 45. b. Apply axial force to impeller end of shaft (122) and firmly seat thrust bearing (112) against shoulder in bearing frame (228).
  • Page 50 Lubricate O-ring (412) with a suitable lubricant. Check shaft (122) seal fit runout in the following manner: Install thrust bearing end cover (109A) with a. Mount dial indicator as shown in Fig. 47. O-ring (412) over shaft (122) and into bore of b.
  • Page 51 b. Rotate shaft (122) so indicator rides along the bearing frame (228) lock for 360 degrees. If total indicator reading is greater than 0.10 mm (.004 in.), disassemble and determine cause. Fig. 49 Install and tighten any plugs and/or fittings removed during disassembly, including oil drain plug (408A), bullseye sight glass, etc.
  • Page 52 Fig. 50 ASSEMBLY OF OPTIONAL PURE OIL MIST CAUTION LU BRI CATED POWER END Do not over tighten thrust bearing end cover / Pure oil mist lubricated power ends are assembled in the bearing frame screws. same manner as ring oil lubricated power ends. Oil rings (114) are not furnished with pure oil mist lubrication.
  • Page 53 ASSEMBLY OF POWER END WITH OPTIONAL WATER COOLING Assemble power end as described in ring oil lubrication section. Once complete, install the finned tube cooling assembly (494) into the bearing frame (228). INSTALLATION OF OPTIONAL WATER JACKET COVER Install outer and inner water jacket cover O-rings (412S and 497T, respectively) into grooves in water jacket cover (490) (Fig.
  • Page 54 Check seal chamber cover (184) lock runout in the following manner: a. Mount dial indicator on shaft (122) as shown in Fig. 54. b. Rotate shaft (122) so indicator rides along the seal chamber cover (184) lock for 360 degrees. If total indicator reading is greater than 0.13 mm (.005 in.), determine cause and correct.
  • Page 55 Check seal chamber lock (register) runout in the following manner: Note: The impeller and wear ring clearance setting procedures must be followed. a. Mount dial indicator on shaft (122) or shaft Improperly setting the clearance or not sleeve (126) as shown in Fig. 57. following any of the proper procedures can result in sparks, unexpected heat generation b.
  • Page 56 Install impeller key (178) in keyway of shaft (122). Key should be at top (12 o’clock) position for installation of impeller (101). CAUTION When handling impeller, wear heavy work gloves to prevent cutting hands on sharp edges. Install impeller (101) on shaft (122). NOTE: Anti-galling compound should be applied to the impeller bore to aid in assembly and disassembly.
  • Page 57 INSTALLATION OF BACK PULL-OUT ASSEMBLY IN CASING Install new casing gasket (351) on gasket surface of casing (100). NOTE: Anti-galling compound may be applied to the casing fits to aid in assembly and disassembly. Replace back pull-out assembly in casing (100) using lifting sling through bearing frame or other suitable means (Fig.
  • Page 58 ASSEMBLY TROUBLESHOOTING Symp tom Prob able Cause Rem edy Bearing internal clearance too great. Replace bearings with correct type. Excessive thrust bearing end cover shim pack Remove individual shims to obtain proper Excessive shaft end play. thickness. thickness. Thrust bearing end cover loose. Tighten screws.
  • Page 59 PARTS LIST WITH STAN DARD MA TERIALS OF CONSTRUCTION Ma te ri als shown are typi cal. Re fer to or der docu men ta tion for ac tual ma te ri als fur nished. Con struc tion - API Des ig na tion Item Part Name Pump...
  • Page 60 Ma te ri als Cross Ref er ence Chart Goulds Pumps ASTM Ma te rial Ma te rial Code Ma te rial Des ig na tion Other Cast Iron 1000 A48 Class 25 Cast Iron 1001 A48 Class 20 Nitronic 60 A743 Gr.
  • Page 61 SPARE PARTS REC OM MENDED SPARE PARTS ..... . 61 When ordering spare parts, always state Goulds serial number, and indicate part name and item number from relevant sectional drawing.
  • Page 62 3700-10th IOM 12/04...
  • Page 63 / starter put in a locked-out position and a caution tag placed at the controller / starter indicating the disconnect. Replace coupling guard before resuming normal operation of the pump. ITT Industries - Goulds Pumps assumes no liability for avoiding this practice. Fig. I-A-1...
  • Page 64 Spread opening of coupling guard half (501B) INSTALLATION slightly and place over pump end plate (234B) as shown in Fig. 1-A-3. NOTE: If end plate (pump end) is already installed, make any necessary coupling adjustments and then proceed to Step 7. Remove spacer portion of coupling.
  • Page 65 Place one washer over bolt and insert bolt 11. Spread opening of remaining coupling guard half through round hole at front end of guard half (501B) slightly and place over installed coupling (501B). guard half so that annular groove in remaining coupling guard half faces the driver as indicated Place a second washer over exposed end of bolt.
  • Page 66 / starter put in a locked-out position and a caution tag placed at the controller / starter indicating the disconnect. Replace coupling guard before resuming normal operation of the pump. ITT Industries - Goulds Pumps assumes no liability for avoiding this practice. Fig. I-A-9...
  • Page 67 / starter indicating the disconnect. Replace coupling guard before resuming normal operation of the pump. ITT Industries - Goulds Pumps assumes no liability for avoiding this practice. Simplicity of design allows complete assembly of the coupling guard, including the thrust end deflector fan guard support, in about twenty minutes.
  • Page 68 Slide thrust deflector fan (123E) off shaft (122). Remove thrust bearing end cover/bearing frame screws (370N) (Fig. I-B-3). Fig. I-B-4 13. Spread opening of coupling guard half (501B) slightly and place over thrust deflector fan guard Fig. I-B-3 (234) so that annular groove in guard half locates around guard support extension (Fig.
  • Page 69 14. Place one washer over bolt and insert bolt through round hole at front end of guard half (501B). 15. Place a second washer over exposed end of bolt and tighten firmly. 16. Thread nut onto exposed end of bolt and tighten firmly.
  • Page 70 / starter indicating the disconnect. Replace coupling guard before resuming normal operation of the pump. ITT Industries - Goulds Pumps assumes no liability for avoiding this practice. WARN ING DO NOT resume normal pump operation with the coupling guard removed.
  • Page 71 APPENDIX II DIAL INDICATOR (RIM-AND-FACE) ALIGNMENT PROCEDURE indicators contact the same point on coupling half NOTE: Alignment procedures must be Y. This will eliminate any measurement problems followed to prevent unintended contact of due to runout on coupling half Y. rotating parts.
  • Page 72 PARALLEL ALIGNMENT NOTE A: When adjusting leveling screws, nuts on foundation bolts should be tightened only A unit is in parallel alignment when indicator P enough to hold firmly. Final tightening is done (parallel indicator) does not vary by more than 0.05 after the unit is grouted and the grout has set for mm (.002 in.) as measured at four points 90°...
  • Page 73 Horizontal Correction (Side-to-Side) COMPLETE ALIGNMENT Zero indicator P on left side of coupling half Y, A unit is in complete alignment when both indicators A 90° from top dead center (9 o’clock, Fig. II-E). (angular) and P (parallel) do not vary by more than 0.05 mm (.002 in.) as measured at four points 90°...
  • Page 76 HOW TO ORDER PARTS When or dering parts, call 1- 800- 446- 8537 or your local ITT Industries - Goulds Representative EMERGENCY SERVICE Emergency parts serv ice is avail able 24 hours / day 365 days / year . . .
  • Page 78 1. Drawing, Brief Description, Functional requirements 1.1 Assembly Drawing The assembly drawing is included in the shipping box with the mechanical seal. 1.2 Brief Description A mechanical seal is a device designed to seal a rotating shaft against a stationary housing, e.g. a pump shaft against a pump casing. The stationary components will consist of a seal ring and (depending on the design) a springloaded element.
  • Page 79 • Freedom of movement of the spring loaded components in axial direction • Axial and radial shaft movements within Flowserve or OEM tolerances whichever is the tightest. • The seal is operated under the conditions for which it was selected. •...
  • Page 80 3 General All illustrations and details in these installation and operating instructions are subject to changes that are necessary to improve product performance without prior notice. The copyright of these instructions is the property of Flowserve. These instructions are intended for maintenance, Operating and Supervisory personnel and contain regulations and drawings of a technical character that may not, in full or in part, be copied, distributed, used without authorisation for competitive purposes, or given to others.
  • Page 81 5. Equipment Check 5.1 Follow plant safety regulations prior to equipment disassembly: 5.1.1 Wear designated personal safety equipment 5.1.2 Isolate equipment and relieve any pressure in the system 5.1.3 Lock out equipment driver and valves 5.1.4 Consult plant Material Safety Data Sheet (MSDS) files for hazardous material regulations 5.2 Disassemble equipment in accordance with the equipment manufacturer’s instructions to allow access to seal installation area.
  • Page 82 range from 1000 to 3600 RPM. For values above and below, consult your Flowserve representative. See figure 1. Shaft endplay should not exceed 0,10 mm (.004”) TIR on ball type thrust bearings. For pad type thrust bearings, refer to manufacturer's instructions. See figure 2.
  • Page 83 Seal chamber squareness to the shaft centreline should be within 0,015 mm per 25 mm seal chamber bore (.0005" per 1" seal chamber bore). Note: make sure that shaft endplay does not affect the reading. Verify the smoothness of the seal Figure 4 chamber face for a good gasket joint.
  • Page 84 6. Mechanical Seal Installation Correct seal setting is important in the successful operation of a mechanical seal. Cartridge seals unitize the complete seal assembly on a sleeve such that the entire seal is installed simultaneously. Component seals are assembled sequen- tially on the equipment and require careful measurements to properly locate and lock the rotating components relative to the stationary components.
  • Page 85 6.1.3 Orient the ports on the seal flange(s) as indicated by the seal assembly drawing and connecting piping. 6.1.4 Evenly torque gland bolts/nuts to prevent cocking of the gland or uneven flange pressure against the seal chamber. Do not tighten drive arrangement screws.
  • Page 86 6.2.3 Orient the connections on the seal flange(s) as indicated by the seal assembly drawing and connecting piping. 6.2.4 Install flange bolts/nuts, but do not tighten. The flange must be free to move radially. 6.2.5 Complete the remaining equipment assembly including thrust bearings, if applicable.
  • Page 87 other damage. Prior to installation, wipe lapped surfaces clean with a lint free cloth and quick drying solvent. Lubrication of seal faces is not recommended unless specified on the seal assembly drawing. 6.3.2 Assemble seal chamber and shaft (including thrust bearings, if applicable) and verify/scribe the seal setting distance as shown on the assembly drawing.
  • Page 88 Figure 9 the end of the shaft as shown on the assembly drawing. 6.4.3 When applicable, pre-assemble the rotating and stationary components or sub-components of the seal in accordance with the assembly drawing. 6.4.4 Assemble the seal components sequentially onto the equipment. Locate the flange(s) against the face of the seal chamber.
  • Page 89 7. Piping Instructions Piping instructions are detailed on the mechanical seal assembly drawing. These instructions must be followed precisely to ensure correct seal operation. For auxiliary systems: carefully read the operating instructions provided with the system. Minimize restrictions, especially in closed loop piping arrangements. Unless otherwise specified, the minimum internal diameter for pipe, tubing and connecting hardware should be 12,7 mm (.500”).
  • Page 90 8. Performance Testing of Pumps Pump manufacturers will often perform pump performance tests on water with the mechanical seal installed. Some seal designs and face materials require special precautions to prevent damage to the seals during these tests. For example, on seals with two hard faces, the seals may be provided with faces in alternate materials more suitable for the pump test medium.
  • Page 91 Dual pressurized (double) seals require the barrier fluid pressure to be maintained at least 2 bar 30 psi) above the seal chamber pressure, unless otherwise specified. It is imperative to pressurize the barrier prior to pressurizing the equipment. Likewise, do not de-pressurize the barrier system until the equipment has been fully isolated, depressurized and vented.
  • Page 92 creating a “ridged system”. Heat conducted from the equipment and/or generated at the faces will cause a rise in temperature of the barrier fluid causing it to expand. Failure to comply can result in pressures way beyond the capability of the seal(s). 9.11 When required, dry steam should be applied to the quench connection.
  • Page 93 11. System check Checking of the system, limits itself to monitoring pressure, temperature, leakage and consumption of barrier (buffer) fluid, when applicable. 12. Spare parts, repairs This mechanical seal is designed to provide reliable operation under a wide range of operating conditions. However, repairs will be necessary when the seal reaches the end of its normal life expectancy or when it has been operated outside of its design capabilities.
  • Page 94 Decontaminate the seal assembly and return it to a Flowserve authorized repair facility with an order marked “Repair or Replace”. A signed certificate of decont- amination must be attached. A Material Safety Data Sheet (MSDS) must be enclosed for any product that came in contact with the seal.

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Goulds pumps 3710

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