Xylem P5002169B Series VSX VSH, VSC, AND VSCS User Manual

INSTRUCTION MANUAL P5002169BINSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.Series VSXVSH, VSC®, and VSCS® Mo

7BASE PLATE SETTING Place the pump unit on its concrete foundation, supporting it with steel wedges or shims. The wedges or shims should be machined a

83. Hold one half element on the hubs to determine the appropriate hub spacing. If using spacer elements with high speed rings, hold both half elemen

9Table 3: Angular Inch Gap Degrees HubSize 1 2 3 4 WE2 0.032 0.065 0.097 0.129 WE3 0.040 0.081 0.121 0.162 WE4 0.045 0.091 0.136 0.181 WE5 0.055 0.10

10properly due to hub misalignment, rotate the shafts slightly. Torque all element and high speed ring capscrews to the values shown in Table 4. If po

11Final Alignment Final alignment cannot be accomplished until the pump as been operated initially for a sufficient length of time to attain operating

12Suction Piping When installing the suction piping, refer to the Hydraulics Institute Standards and observe the following precautions. (See Figure 14

13Figure 15: Unbalanced Loading of a Double Suction Impeller Due to Uneven Flow Around an Elbow Adjacent to the Pump When operating on a suction lif

14Pressure Gauges Properly sized pressure gauges should be installed in both the suction and discharge nozzles in the gauge taps. The gauges will enab

15times, be supplied with flushing liquid at a high enough pressure to keep the box free from foreign matter, which would quickly destroy the packing

16Figure 18: Vee-cut Impeller Diameters

i TABLE OF CONTENTS INTRODUCTION ... 1 DESCRIPTION...

17OPERATIONFLUSHING New and old systems should be flushed to eliminate all foreign matter. Heavy scale, welding splatter and wire or other large forei

1810. 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 pump

19MAINTENANCEGENERAL MAINTENANCE AND PERIODIC INSPECTIONOperating conditions vary so widely that to recommend one schedule of preventative maintenance

20stuffing box. In all cases, however, we recommend an inspection of the packing before pump is started. A soft, well-lubricated packing reduces stuff

21TROUBLE SHOOTING Between regular maintenance inspections, be alert for signs of motor or pump trouble. Common symptoms are listed below. Correct any

22CAUSES CURESNot Enough Pressure 20. Mechanical defects See items 14 and 15. 21. Obstruction in liquid passages Dismantle pump and inspect passages

23GUARDSANSI/OSHA COUPLING GUARD REMOVAL/INSTALLATION WARNING: Extreme Temperature Hazard If pump, motor, or piping are operating at extremely high or

24Figure 20: Installation/Removal Coupling Guard BRACKET GUARDS WARNING: Extreme Temperature Hazard If pump, motor, or piping are operating at extrem

25SERVICE Figure 22: Mechanical View

26GENERAL DISASSEMBLY PROCEDURES SHUTDOWN The following steps will address most normal shutdowns of the pump, such as maintenance. Make any further ad

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27Figure 25: Removing the Bearing Using PullersFigure 26: Removing the Bearing Using a Universal Kit 8. For 2” frames only: remove the bearing back

2810. Repeat steps 1 through 9 for the other side. 11. If only the mechanical seals are to be replaced, proceed to the section entitled Assembly Proc

29Figure 33: Cartridge Seal Gland and Service Kit (Cassett and Sleeve) 6. If only the cartridge seal or cartridge seal cassette is to be replaced, p

30Figure 36: Installing the Impeller Retaining RingRefer to Figure 52 to check that the impeller, shaft, and volute are orientated correctly for the

31Figure 40: View of the pump interior after one coverplate has been installed 8. Install the volute capscrews. NOTE: Refer to Table 6 for all capsc

32Figure 45: Installing the Gland Assembly 7. Install the four gland assembly capscrews. 8. Install the set screws in the sleeve and tighten to 50

33If installing a cartridge seal cassette, use P-80 Rubber Lubricant Emulsion, soapy water, or equivalent to lubricate the static face o-ring. Slide t

34Figure 50: Installing the Lockwasher and Locknut 6. For inboard bearing bracket only: Install the lip seal into the bearing bracket bore. The lip

35TO CHANGE ROTATION Figure 52: Impeller to Volute Orientation WARNING: Unexpected Startup Hazard Disconnect and lockout power before servicing. Fai

36TO CHANGE STANDARD MECHANICAL SEALSSee the following sections: A. GENERAL DISASSEMBLY INSTRUCTIONS B. DISASSEMBLY PROCEDURE TO REMOVE BEARING FRAM

1INTRODUCTIONDESCRIPTIONThe Series VSX centrifugal pumps are frame-mounted pumps that feature high efficiency, rugged construction, compact design, fo

37Table 6: Capscrew Torque Capscrew Torque (Foot-Pound) Capscrew Diameter Capscrew Type Head Marking 1 / 4 5/16 3/8 7/16 1 / 2 5/8 3 / 4 7/8

Xylem Inc. 8200 N. Austin Avenue Morton Grove, Illinois 60053 Phone: (847) 966-3700 Fax: (847) 965-8379www.xyleminc.com/brands/bellgossettBell & G

2 PUMP IDENTIFICATION Bell & Gossett pumps are designated by a series of numbers such as Series VSX, Model VSH, VSC, or VSCS. The pump nameplate

3SAFETY INSTRUCTIONS SAFETY INSTRUCTION This safety alert symbol will be used in this manual and on the pump safety instruction decals to draw attenti

4ADDITIONAL SAFETY INSTRUCTIONS Electrical Safety WARNING: Electrical Shock Hazard Electrical connections to be made by a qualified electrician in acc

5GENERAL INSTRUCTIONS PURPOSE OF THE MANUAL This manual is furnished to acquaint you with some of the practical ways to install, operate, and maintain

6LOCATION Locate the pump so there is sufficient room for inspection, maintenance, and service. If the use of a hoist or tackle is needed, allow ample