Angular misalignment occurs when the motor is set at an angle to the driven equipment. Some, but not all explosion proof motors are available with a c or d frame end bell. This is probably the most common configuration of coupled machines in industry. Motorpump alignment is the process of aligning shaft centerlines between a motor and a pump. Alignment is important, but we can get away with the least accurate method. A millwrights guide to motorpump alignment harlon, tommy b download bok. The main purpose of shaft alignment is to make sure that the center line of the motor rotor shaft coincides with the center line of the driven machinery i. Hence, this technique offers precise alignment and secure hold. This section shows the recommended preliminary cold settings for electric motordriven pumps. Produce pdf reports directly from the display unit and. A 100 hp electric motor on a 50hp load will work and run smooth and cool and only use 50 hp of energy. A simple and effective procedure for doing shaft alignment of rotating machinery. You make calculations to see how far the driver must be moved to align the centerline of the pump to the.
If necessary, raise and safely support the vehicle, place a drain pan under the vehicle and remove the oil filter. This manual covers horizontal and vertical squirrelcage induction motors in the 300 to 5,000 horsepower range, low and mediumvoltage. Care has been taken by the authors, pruftechnik ltd, in the preparation of this publication. Pdf basic shaft alignment workbook for industrial rotatin. Pentair pump installation and user manual pdf download. Tmea2skf laser shaft alignment alignment performed by.
The objective of optimized shaft alignment is to increase the operating life span of rotating machinery. With power turned off, rotate each pump by hand to insure that pump and motor are not bound up. Pumps need to be sized based on pressure, flowrate and head. This document is exactly the same as the printed alignment reports included with the skf shaftalign tmea 1. Carefully lift the catch off of the harness and pull it away from the oil pressure sending unitswitch3. If the centerlines of the motor and the driven equipment shafts were to be extended, they would cross each other, rather than superimpose or run along a common centerline.
Alignment is a subject too vast, ranging to allow a comprehensive coverage of all of the areas associated with this field. Possible causes and solutions to misalignments in pumps. Machine type pump motor vertical angle horizontal angle horizontal offset thermal compensation stationary s machine movable m machine vertical offset offset 2. Installation, operation, and maintenance manual goulds pumps. It is not intended as a comprehensive guide to alignment of process machinery, nor is it a substitute for seeking professional advice or reference to the manufacturers of the machinery. Vibralign is committed to helping businesses use their resources more efficiently and effectively. Dec 17, 2011 proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. These indicator readings mean that you need to move the motor. Pumps operated in these circumstances may experience a build up of vapor pressure and may contain scalding hot water. This manual focuses primarily on iec motors and standards.
How to do the alignment for vertical pumps with motor artisi mechanical 11 jan 15. Do not allow the pump to operate if it has been flooded. For appropriate applications, the time, expertise and instruments needed to achieve precision alignment tolerances of less than 0. Update your shaftalignment knowledge peerless pump.
Soft foot check and correct as required see following pages. In pursuit of that goal, vibralign invented its own method of correcting misalignment called vertizontal which allows for the vertical and horizontal adjustments to be made together in one pass, saving valuable time and ensuring accuracy the first time around. Pdf centrifugal pump handbook, third edition sulzer pumps. Alignment of pumps one of the most important parts of pump setup is making sure that the pump and the drive motor are carefully aligned. The motor is the prime mover, transferring power to the pump by the use of a coupling. Occupational safety and health administration osha updates. Check by starting motor and switching off immediately, confirm rotation is the same as the arrow. Proper alignment is the largest factor in determining the life of bearings, seals and couplings. These defects can turn a simple job into an all day affair and also unsatisfactory results despite a conscientious effort and a considerable investment in manpower and downtime.
If a manufacturer of a machine or coupling require tighter alignment tolerances, those should be used. But usually a pump and electromotor have different coefficients of thermal growth and it is very important. Machinery alignment tolerance tables impact engineering. Download shaft alignment report template from this section you can download an ms word template of the shaft alignment report, which can be used for documenting alignment activities. Machinery alignment tolerance tables the suggested alignment tolerances shown here are general values based upon experience and general industry standards and should not be exceeded. Structural errors and machine errors often compound alignments. Under the indicator position mark the point that is 12 the indicator reading. Misalignment may account for over 50% of malfunctions in rotating machinery, leading to problems such as worn or broken couplers, vibration, and excessive wear of bearings, seals and wear rings. Close coupling also provides a compact unit that is often less expensive than an equivalent long coupled assembly.
The alignment training is suitable for technicians undertaking machine alignment, coupling alignment, motor alignmnet, pump alignment, etc. A typical pump in an hvac application requires a fourpole motor 1,750 to 1,800 rpm, depending on slip. In the article temperature growth influence on the shaft alignment of centrifugal pump unit is examined. Pdf it is common knowledge that the alignment condition of rotating machinery affects the. The skf tksa 11 is an innovative shaft alignment tool that uses smartphones and tablets and intuitively guides the user through the shaft alignment process. If your motor does not have a c or d end bell, one can be installed when the motor is rewound. This will show you how much you need to move the motor for horizontal alignment. A practical guide to shaft alignment plant services. On each coupled pump, check alignment of coupling between pump and motor in accordance with pump manufacturers instructions. For example, the only correct way to express shaft alignment tolerances is in terms of alignment conditions at the coupling, and we will describe several ways to do this. Here you can download the pdf template of the tksa 20 shaft alignment report, which can be used for documenting of your alignment activities.
The book is reference material on rotating machinery basics, pump overhaul, mechanical seals, basic vibration, and shaft alignment. Shaft misalignment is responsible for as much as 50 percent of all costs related to rotating machinery breakdowns. Tokyo butterworthheinemann is an imprint of elsevier preface this new edition of the. Most of the principles covered apply to other sizes as well. View and download ford thunderbird 1966 shop manual online. When i have pumps that pump very hot liquids such as boiler feed water i try to have them brought close to operating temp before alignment. A millwrights guide to motorpump alignment harlon, tommy. It is not intended as a comprehensive guide to alignment of process machinery, nor is it a substitute for seeking professional advice or. Therefore, less accurate methods can be used at slower shaft speed. Types of alignment there are three types of motor misalignment.
Mechanical engineering a series of textbooks and reference books founding edit. If a motor has become wet let it dry before operating. The primary reasons why machinery is misaligned is lack of proper training, improper tools to do the job, and that people are not given enough time to do it right. If, on the other hand, you update your knowledge of shaft alignment techniques and acceptable alignment tolerances, you might be on the way to becoming more reliabilityfocused. How to do the alignment for vertical pumps with motor pump. With your download, get the 37 best papers relevant to this one, including 18 top related papers. Ford thunderbird 1966 shop manual pdf download manualslib. Close coupling is the preferred method of joining pump and motor as it allows a motor to be directly mounted onto a pump. Pdf effects of motor misalignment on rotating machinery. Confirm correct direction of rotation prior to coupling to pump. With a focus on the core alignment tasks, the tksa 11 is designed to be a very easytouse instrument that is especially suitable for alignment learners and compact applications. It is very important that the pumpmotor alignment is carried out correctly. Centrifugal pump handbook centrifugal pump handbook third edition sulzer pumps ltd winterthur, switzerland amsterdam. The adapter solves the problem of there is no time to do an alignment.