Alignment pump and motor pdf

Shaft alignment training course ppt presentation and machine. A modern shaft alignment system can measure all the above types of machine. If the front foot of the motor is left 2 mils high and the back feet are left 2 mils low, the shaft alignment results will be as follows. The alignment of the pump shaft to the drive shaft of the motor, gear, or engine driving the pump is called shaft alignment. This will show you how much you need to move the motor for horizontal alignment. Motorthe engineer would size the motor based on the amount of horsepower required to do the work that the pump is called to do.

The motor should then be moved into proper alignment and joined to the coupling. A centrifugal pump is one the simplest pieces of equipment in any process plant. For this exercise, the temperature of the pump will not change. 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. 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. A practical guide to shaft alignment plant services. Achieving proper alignment, however, involves much more than merely adjustment the machines so that the shafts are coaxial. With a loadonpad design, figure 1 the shaft is free to laterally within bearing clearance, and alignment data is difficult to obtain without temporary bearing shims to stabilize the sham with a loadbetweenpad design, figure 1 b, the shaft remains stable during the alignment procedure.

The alignment of the pump flanges to the connecting piping is called flange alignment. Fluke 830 laser shaft alignment tool technical data theres more to shaft alignment than taking measurements and making adjustmentswhen uptime matters picking the right tool is critical. Precision alignment ensures the smooth, efficient transmission of power from the motor to the driven machine. If your motor does not have a c or d end bell, one can be installed when the motor is rewound. Our objective is to identify a simple shaft alignment procedure that can be followed for every alignment. Several equipment alignment methods, especially the reverse dial indicator method, which is the principle used in laser alignment is covered in explicit detail. The way to complete the online pump alignment form on the internet. Therefore, less accurate methods can be used at slower shaft speed. 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. The main difference in aligning a vertical cface pump and traditional alignment is this. Campbell senior alignment specialist bently nevada corporation houston, texas c. A millwrights guide to motor pump alignment 1st edition by tom harlon author 3.

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. Straight edge this method requires placing a straight edge on the pump and motor coupling, then making a visual check to see if the components are aligned. A millwrights guide to motor pump alignment, second edition is the result of over 38 years of hard work and many thousands of hours writing, testing, retesting, and testing again the alignmentrelated formulas the author developed on his own. 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 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. In the article temperature growth influence on the shaft alignment of centrifugal pump unit is examined. Next, install the coupling to the driven equipment. Dec 01, 2002 if the front foot of the motor is left 2 mils high and the back feet are left 2 mils low, the shaft alignment results will be as follows. Aligning vertical pumps empowering pumps and equipment. Under the indicator position mark the point that is 12 the indicator reading. Since the motor uses a cface flange, the motor is bolting axially into the flange. Its purpose is to convert energy of prime mover an electric motor or turbine first into velocity or kinetic energy and. Alignment is important, but we can get away with the least accurate method. After you perform alignments over a period of time using the same procedure, you will find yourself spending less time per alignment and doing a much better job. For appropriate applications, the time, expertise and instruments needed to achieve precision alignment tolerances of less than 0. It is sure to be valuable to novices and professionals alike. Up to 4 different measurement methods makes it possible to perform shaft alignment in any conditions. Motorpump alignment is the process of aligning shaft centerlines between a motor and a pump.

Care has been taken by the authors, pruftechnik ltd, in the preparation of this publication. 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. 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. Up to about thirtyhorse power 22 kw you hang the motor on the pump. Improper alignment results in excessive vibration, short life of driven equipment compound bearing and coupling clutch parts, and frequent realignment. Pump alignment form fill out and sign printable pdf. The motor is the prime mover, transferring power to the pump by the use of a coupling. Hence, this technique offers precise alignment and secure hold. So to position the motor for proper shaft alignment, these two methods must be utilized. Tmea2skf laser shaft alignment alignment performed by. Motor efficiency in a precisely aligned machine increases.

At todays energy prices, those savings can be significant. Proper alignment is the largest factor in determining the life of bearings, seals and couplings. Once the pump set has been properly installed, the final alignment can be checked and, if necessary, corrected. Todays high performance machinery and expectations for up time require more accurate measurement. It is not intended as a comprehensive guide to alignment of process machinery, nor is it a substitute for seeking professional advice or. Shaft misalignment is responsible for as much as 50 percent of all costs related to rotating machinery breakdowns. The book is reference material on rotating machinery basics, pump overhaul, mechanical seals, basic vibration, and shaft alignment. Use this stepbystep guide to fill out the pump alignment form swiftly and with ideal precision. Close coupling also provides a compact unit that is often less expensive than an equivalent long coupled assembly. Increased motor efficiency equals less power equals lower energy bills for your facility. Again, this information would be drawn from the motor manufacturer, who has done extensive testing to determine motor performance.

These indicator readings mean that you need to move the motor. The shafts of the pump and drive unit must be closely aligned. For maintenance personnel in drinking water and wastewater. The shaft alignment training course provides a highly practical knowledge of the use of dial gauge in coupling alignment. A millwrights guide to motor pump alignment by tommy b. Vibralign is committed to helping businesses use their resources more efficiently and effectively. Some, but not all explosion proof motors are available with a c or d frame end bell. Dec 17, 2011 proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. Reverse alignmentunderstanding centerline measurement by c. Close coupling is the preferred method of joining pump and motor as it allows a motor to be directly mounted onto a pump. Machinery alignment tolerance tables impact engineering. The fluke 830 laser shaft alignment tool is easytouse, giving you fast, accurate and actionable answers that will keep your plant up and running.

Richard massey president aline manufacturing company, incorporated laporte, texas and alastair j. The proper shaft alignment procedure is to secure the driven equipment first because moving a pump, for example, would stress the connecting piping. A millwrights guide to motor pump alignment, second edition is the result of over 38 years of hard work and many thousands of hours writing, testing, retesting, and testing again the alignment related formulas the author developed on his own. 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.

Longcoupled pumps have separate pump and motor shafts that are connected through a coupler. A motor with a starting temperature of 70 f is perfectly aligned to the pump shaft it will be driving. If your motor does not have a c or d end bell, one can be. Proper alignment of rotating equipment has a long been recognized as a prerequisite to safe, reliable operation. Proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. Jun 12, 2010 learn from the very simple sets of pump and motor, the model made out of papers. This procedure should be followed for every alignment from beginning to end. It also has important functions that aid the user in obtaining faster and better results. Above thirtyhorse power 22 kw you hang the pump on the motor. The adapter solves the problem of there is no time to do an alignment. This is probably the most common configuration of coupled machines in industry. Misalignment in pumps possible causes and solutions. Obviously realignment is needed whenever the pump or motor are moved or replaced. 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.