Related Manuals for MTH PUMPS P31 Series
Summary of Contents for MTH PUMPS P31 Series
- Page 1 Section P31 Page 501 Dated October 2010 97-5006-01-588 P31 SERIES Pump Manual HORIZONTAL CLOSE COUPLED ADJUSTABLE PERFORMANCE INTEGRAL RELIEF VALVE OPTION...
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Page 2: General Instructions
Page 502 P31 SERIES General Instructions REGENERATIVE TURBINE PUMPS and proper care must be taken to assembly. Make sure the motor rota- prevent product deterioration from tion and speed matches that required A. Inspection of Equipment improper storage. for the pump. - Page 3 Page 503 1D6 Noise same size as the pump inlet or sized minimum requirement like a centrifu- based on reasonable fluid friction gal. The performance of each unit at While not generally considered losses. a given NPSH can be obtained from especially noisy, regenerative turbine the performance curves or from your pumps often produce a high pitched...
- Page 4 Page 504 FOR ROUTINE MAINTENANCE FOR REBUILDING A PUMP - all The factory recommendation for - only the mechanical seals and a the components required for servic- spare parts are all of those needed complete set of “O” ring gaskets are ing plus shaft sleeve, and drive keys for rebuilding a pump and are shown recommended.
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Page 5: Installation
Page 505 P31 SERIES 2.Installation CLOSE COUPLED PUMPS flexible-coupled units. The pump aligned piping. It is recommended foundation is used as a support for that you begin piping at the pump. A. Location the baseplate to maintain alignment If the lines are ended at the pump, B. -
Page 6: Operation
Page 506 P31 SERIES 3.Operation P31 REGENERATIVE TURBINE change the leads as indicated on PUMPS the connection box cover. Some No adjustments are required or ad- single phase motors may not be visable on new pumps. Because of A. Rotation reversible. - Page 7 The likelihood of pump Optional self-priming accessories are damage from dry running is vastly available for most MTH pumps allow- reduced. Larger suction lines may be ing priming when a vacuum pump or used, which also reduce line losses foot valve is not practical.
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Page 8: Maintenance
A. Seals Sealed ball bearings are standard ing failures and then possible pump B. Flushing Lines in all MTH pumps and motors. The damage as rotating parts become C. Lubrication maximum continuous operating mis-aligned. - Page 9 The following tools and equipment A. Preliminary are needed for disassembly/reas- B. Disassembly 1. Remove all liquid from the pump. sembly of P31 Series Pumps: C. Inspection of Components Air blown through the pump will D. Reassembly remove fluid quickly.
- Page 10 Page 510 3. Remove the casing. In some 9. It is not necessary to remove the Check the shaft and sleeve for cases light tapping with a plastic shaft sleeve (#88) unless the shaft galling, pitting, and corrosion. If or wooden mallet on the outside sleeve o-ring (#7A) needs to be the motor shaft is corroded under- diameter of the casing may be...
- Page 11 Page 511 b. Make sure that both the motor- 9. Apply a thin coating of lubricant e. Start turning the adjusting nut face and the feet of the motor to the o-ring groove in the casing counter-clockwise the number bracket are clean. Slide the (#108).
- Page 12 Page 512 4. Start the pump and make any 6. Under pressure, the impeller will This completes the adjustment and final adjustments to the adjusting find its “hydraulic” balance. testing phase. The pump is ready for nut and the M6 bolts holding the service.
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Page 13: Troubleshooting
Page 513 P31 SERIES Troubleshooting CLOSE COUPLED PUMPS 2. Excessive suction lift — 10.Pump not properly adjusted — Relocate pump, supply tank, or Follow the instructions in Section A. Failure to Pump both to minimize suction lift. 5D Step 10 for readjustment. - Page 14 Page 514 6E Excessive Power Consumption 3. Mechanical damage — 2. Improperly installed seat or If mechanical damage is sus- rotating element — 1. Speed too high — pected, check first to determine if If a seal has recently been Check RPM with tachometer.
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Page 15: Parts And Repair Services
Fax: 630-552-3688 information on the system in which it Replacement mechanical seals are is installed. Refer to the MTH Pumps stocked at MTH and are always 7B Repair Services Limited Warranty statement. available insofar as possible for im- mediate shipment. -
Page 16: Limited Warranty
Section P31 Page 516 Dated October 2010 P31 SERIES 97-5006-01-588 8.Limited Warranty MTH makes good faith recommendations of Products, based on its experience and the application information provided by the Purchaser. However, the responsibility for testing and approving a Product to be used for a particular purpose lies with the Purchaser.
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