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7.

Limited Warranty

motors, mechanical seals, relief valves, 

or other accessories should be obtained 

from the manufacturer of these compo-

nents. MTH does not carry replacement 

parts and is not authorized to render 

repair service on these components.  

Replacement mechanical seals are 

stocked at MTH and are always avail-

able insofar as possible for immediate 

shipment.  Warranty service, as well as 

expert application information can be 

obtained from your local seal manufac-

turer’s sales office.

T51 • E51 SERIES

Section 

T51 • E51

  Page 520

Dated 

February 2014

97-4623-01-588

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. 

The obligations of MTH Tool Company, Inc. (hereinafter referred to as “MTH”), with respect to a “Product” (defined below) are limited as set forth herein. 

ALL IMPLIED WARRANTIES, including the 

“implied warranty of merchantability”

 and the 

“implied warranty of fitness for a particular purpose”

 are HEREBY 

DISCLAIMED.

There are no warranties which extend beyond the description on the face hereof.

MTH warrants that, during the “Warranty Period” (defined below), the “Product” (defined below) will not fail to meet the “Operational Specifications” (defined below), within 

applicable industry tolerances established by the Hydraulic Institute, due to defects in its materials and workmanship.  MTH does not warrant that any Product will meet the 

“Operational Specifications” in conditions other than the Standard Operating Conditions, unless agreed to by MTH in a signed writing.  

For all purposes of this Limited Warranty:

 

(a)    The term “Warranty Period” shall mean the twelve (12) month period from the date of shipment from MTH to the Purchaser (the “Warranty Period”).

 

(b)    The term “Product” shall mean:  any item or assembly of items sold by MTH that are either manufactured or selected by MTH to meet the “Operational Speci-

 

fications”.  The term “Product” does not include any item, assembly of items, or portion of such assembly that is selected or specified by any entity other than MTH,

 

or that MTH has identified as ineligible for warranty coverage. 

 

(c)    The term "Purchaser" shall mean the original person(s) or entity that issued the purchase order to MTH, for the Product.

 

(d)    The term “Operational Specifications” shall mean the specified dimensions, material composition, and performance parameters of a Product, as pub-

 

lished by MTH, or as otherwise agreed in a signed writing between MTH and Purchaser.  “Standard Operating Conditions”, for pumps, shall mean:  operating with

 

clean water, at standard temperature and pressure. “Operational Specifications” shall not include visual appearance or any other parameters not expressly agreed

 

to in writing. 

If, within the Warranty Period, a Purchaser believes that a Product has failed to meet its Operational Specifications, the Purchaser must request a Return Goods Authorization 

(“RGA”) in the manner specified at http://www.mthpumps.com, and supply any additional information MTH might reasonably request. If the Product was purchased through 

a distributor or any entity other than MTH, the RGA request must be made through that entity. Any Product returned without an RGA will be refused at the dock. Products 

authorized for return must be properly packaged to prevent further damage, clearly marked with the Return Goods Authorization “RGA” number provided by MTH, and shipped 

freight prepaid and allowed, F.O.B. the MTH factory at Plano, Illinois, USA.  

MTH may, in its sole discretion, deny any warranty claim if shipping damage, any attempted disassembly, or any other action outside of MTH’s control impairs MTH’s determi-

nation of the existence of, or cause of a claimed failure.  

Notwithstanding anything to the contrary in this Limited Warranty, MTH 

shall have no obligation

 to repair or replace any Product it determines to have any defects arising from 

or attributable to:  (1) abrasion, corrosion, or erosion arising after shipment from MTH; (2) improper handling, packaging, installation, storage, or maintenance, after it is shipped by 

MTH; (3) repairs or alterations outside of MTH’s factory, in any manner, without MTH’s written authorization; (4) misuse, negligence, or accident after shipment from MTH; (5) use 

in a manner inconsistent with MTH’s published instructions and Operational Specifications, or other written specifications agreed to by both Purchaser and MTH; or (6) incorrect 

power supply or power quality.  MTH’s determination with respect to the applicability of this Limited Warranty to any particular defect or Product shall be final and conclusive.  

If, after examination by an authorized representative of MTH, MTH determines that the Product failed to meet the “Operational Specifications”, within applicable industry 

tolerances established by the Hydraulic Institute, due to defects in its materials and workmanship, during the Warranty Period, then MTH will, at its option, ship a repaired or 

replaced Product to the Purchaser, F.O.B. MTH’s factory in Plano, Illinois, U.S.A., freight prepaid and allowed.  MTH will use a freight provider of its choosing, via a method no 

faster than that used for shipping the Product to MTH.  MTH may, at its sole discretion, issue a credit memo to Purchaser for some or all Purchaser’s shipping costs to return 

a defective Product to MTH. 

MTH accepts no responsibility for costs associated with removal and reinstallation of Products. 

Under no circumstances shall MTH be liable for incidental or consequential damages.

MTH neither assumes responsibility for, nor authorizes any person to assume for it, any other obligation in connection with the sale of any Product or any enlargement of this 

Limited Warranty.  

Some States do not allow the exclusion or limitation of incidental or consequential damages.  So, the above limitations or exclusions might not apply to you.  This 

warranty gives you specific legal rights, and you might, also, have other rights, which vary from State to State. 

By using this Product, you agree that this Limited Warranty is governed by the laws of the State of Illinois; that this Limited Warranty shall be interpreted and en-

forced only in accordance with the laws of the State of Illinois (excluding its conflicts of law provisions); and that you submit yourself to the jurisdiction of the 23rd 

Judicial Circuit, Kendall County, Illinois, which shall have exclusive jurisdiction over any controversy or dispute arising under or with regard to this Limited Warranty.

Distributed in the UK by.....
Pump Engineering Limited.

 

Unit B1, Riverside Industrial Estate,

Littlehampton, West Sussex, BN17 5DF, United Kingdom
Tel: 01903 730900     Fax: 01903 730234
email:  [email protected]   Web: www.pumpeng.co.uk

Summary of Contents for E51 SERIES

Page 1: ...ction T51 E51 Page 501 Dated February 2014 97 4623 01 588 T51 E51 SERIES Pump Manual Distributed in the UK by Pump Engineering Limited Unit B1 Riverside Industrial Estate Littlehampton West Sussex BN17 5DF United Kingdom Tel 01903 730900 Fax 01903 730234 email sales pumpeng co uk Web www pumpeng co uk ...

Page 2: ...ose coupled units access to the shaft is between the pump and motor A vise grip or other plier type gripping device may be used directly on the shaft Apply ing torque to the motor fan blades is not recommended If the impeller does not break loose immediately fill the pump with a process compatible fluid and try again in a few hours If this fails loosen only the pump cov er thru bolts clamping the ...

Page 3: ... as possible when the pump is started This will reduce the start up load on the pump and motor Never start the pump with the discharge valve closed The inlet valving should be open when starting any pumping system Without some fluid in the pump it can gall and lock up impellers Violent pump failure will result from contin ued operation with the inlet valve closed 1D4 Priming Regardless of whether ...

Page 4: ... properly aligned The foundation must be a perma nent rigid installation of concrete or other material of sufficient mass to absorb all normal vibrations Locate the foundation bolts using a layout or template in relation to the suction and discharge piping If concrete is being used foundation bolts of the specified size can be enclosed in a pipe sleeve two to three diameters larger than the bolts ...

Page 5: ... the lines are ended at the pump particularly if the last piece is cut a little too short or long the pump will be forced to meet the pipe and strain or distortion will result 2E2 Piping Support Never allow the pump to support piping Other means such as pipe hangers and pipe supports should be used to carry piping to avoid misalignment and distortion Consid eration should be given to thermally ind...

Page 6: ...he pump If a new pump does not oper ate properly the first thing to check for is damage from foreign material 3D Electrical It is important to be aware of and fol low the appropriate local and national electrical codes Do not make wiring alterations that can affect motor rotation without reconfirming correct rotation Select starter heaters and wiring for the maximum current the motor can use at fu...

Page 7: ... valve necessary to maintain a vacuum in the suc tion line as surging occurs in the pump 2 An air eliminator used on the discharge side of the pump to separate air from liquid so the liquid can be used again as air is carried through the pump 3 A recirculating line carries liquid from the air eliminator to the suc tion 4 A fluid chamber used on the inlet side to provide a supply of fluid to speed ...

Page 8: ...to Figures 4 4 and 4 5 for refer ence to the numbered parts in the procedures below 1 Remove all liquid from the pump Air blown through the pump will remove the water quickly 2 Remove the two 2 nuts 20 and the two 2 3 8 X 4 bolts 19 from the cover 2 3 Remove the cover In some cases light tapping with a plastic or wooden mallet on the outside diameter of the cover may be required to loosen it from ...

Page 9: ...s 4 11 and 4 12 for reference to the numbered parts in the disassembly below 1 Remove all liquid from the pump 2 Remove the two 2 3 8 nuts 20 and the two 2 3 8 X 4 bolts 19 from the cover 2 3 Remove the cover In some cases light tapping with a plastic or wooden mallet on the outside diameter of the cover may be required to loosen it from the motor bracket Care should be taken if a screwdriver is n...

Page 10: ... is recommended that a new rotating element be used for reassembly DO NOT attempt to remove the seal using a screwdriver or other sharp object Damage to the shaft or element can occur 7 Before the motor bracket 1 can be removed the four 4 O rings 8 located on the upper left and right studs must be removed a Gently tap on the back of the motor bracket alternating between the left and right side unt...

Page 11: ...t 125 Refer to Figure 4 12 Place the motor bracket face down on a clean flat surface Look into the opening in the center of the motor bracket and you will see a portion of the seat Insert the 1 dowel and very gently tap the seat until it drops out Care must be taken with the seat It is often a brittle material and is prone to breakage It is recommended that a new replacement seat be installed duri...

Page 12: ...ts should be visually inspected and cleaned or replaced as outlined in 4D above 1 The seal seat 125 must be in stalled in the motor bracket before the bracket is installed on the mo tor To install the seat a Place the motor bracket face up on a flat surface b Carefully press the seat smooth side up into the seat cavity of the motor bracket To make the installation of the seat easier apply a thin c...

Page 13: ...impel ler wearing surface Force should not be required to install the impeller in the correct posi tion c The impeller hub should be facing out away from the motor bracket Refer to Figure 4 4 and 4 5 d If the impeller does not fit repeat steps a and b to deter mine the problem 5 Place O ring 7 into the O ring groove in the motor bracket It is helpful to stand the motor and pump assembly on end for...

Page 14: ...placed as outlined in 4E above 1 The stationary seat 125 must be installed in the motor bracket before the bracket is installed on the motor To install the seat a Place the motor bracket face up on a flat surface b To make the installation of the seat easier apply a thin coating of compatible lubricant to the elastomer portion of the seat prior to installation c Carefully press the seat smooth sid...

Page 15: ...mpeller wearing surface Force should not be required or used to install the impeller in the correct position The impeller hub should be facing out away from the motor bracket Refer to Figures 4 4 and 4 5 7 Next rotate the impeller by hand the impeller should move freely 8 Place the large O ring 7 into the outside O ring groove in the motor bracket 9 Place the cover over the motor bracket and insta...

Page 16: ...ion 4 T51 PUMP ENDS All work on the unit should be per formed on an elevated workbench whenever possible The disassembly and reassembly procedures are broken into two sec tions covering the following units 4B Disassembly of the P3 and P15 Bearing Pedestals 4D Reassembly of the P3 and P15 Bearing Pedestals Exploded views of each unit Figures 4 19 and 4 20 are provided for refer encing the numbers i...

Page 17: ...t using the following procedure This procedure is not recommended and should only be used in an emer gency situation 1 Stand a piece of 3 4 pipe for P3 or a 1 1 4 piece of pipe for P15 with the threads cut off on a work bench or similar flat surface with the bearing placed on the correct shaft end 2 Insert the shaft into the pipe so the bearing is between the pipe and the shoulder of the shaft Ref...

Page 18: ...system with fluid and hydrostatically test Tighten connections or replace leaky components 2 Air entering pump through inlet seal or O rings Hydrostatically test the pump and look for leaks Replace faulty seals or O rings 3 Insufficient NPSH or too much suc tion lift Relocate pump supply tank or both to improve inlet con ditions Increase suction pressure Reduce fluid temperature Select a pump with...

Page 19: ...t If a seal has recently been replaced look for a missing O ring cup around the seat or a seat that was installed cocked or backwards The smooth surface should face the rotating element The rotating element may be in backward or improperly posi tioned Refer to the appropriate seal diagrams and instructions to confirm the correct seal orientation Rotating elements sometimes stick in the wrong posit...

Page 20: ...thout an RGA will be refused at the dock Products authorized for return must be properly packaged to prevent further damage clearly marked with the Return Goods Authorization RGA number provided by MTH and shipped freight prepaid and allowed F O B the MTH factory at Plano Illinois USA MTH may in its sole discretion deny any warranty claim if shipping damage any attempted disassembly or any other a...

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