The original function of a flexible coupling was to accommodate the small amounts of shaft misalignment remaining after the completion of a shaft alignment using a straight edge or feeler gauges. I want to know how alignment of pump shaft is done with motor shaft. The speed of use and the precision in alignment means that investing in a laser based shaft alignment system usually pays for itself within 36 months. 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. Repeat the collection procedure if the differences. Machine type pump motor vertical angle horizontal angle horizontal offset thermal compensation stationary s machine movable m machine vertical offset offset 2. Our vision is to build a digital community through websites, enewsletters, and social media channels that allows pump industry professionals to exchange ideas, news stories, product information, case studies, videos, event information and more. The alignment training is suitable for technicians undertaking machine alignment, coupling alignment, motor alignmnet, pump alignment, etc. If it is a multicell tower and cannot be drained, run the fans on each side of the fan you are aligning, to help assure decent air flow and minimize any condensate in the air. A guide to properly align and install vertical turbine pumps. Shaft alignment procedure mantenimiento planificado.
In practice, proper alignment is difficult to achieve without using alignment equipment such as dial indicators or laser alignment tools. For example, the only correct way to express shaftalignment tolerances is in terms of. A motor with a starting temperature of 70 f is perfectly aligned to the pump shaft it will be driving. In isolation each strategy can help to reduce unexpected machine failure but taken together they form the hub. The motor is the prime mover, transferring power to the pump by the use of a coupling. Standard industry norms for alignment tolerances are cited in table 1. Basic shaft alignment workbook preface w elcome to the introductory book on. With feeler gauge find obvious gaps and fill them with shims, taking care of any rough soft foot condition.
Where flowserve has supplied only the bare shaft pump, the ex rating applies only to the pump. Alignment of vertical shaft hydrounits issued 1967 darrell temple revised 1988 william duncan jr. By checking the noise level of the pump unit, take necessary measures to avoid noisy operation of the pump that can have harmful. Vertical shaft hydrounits description to better understand the alignment process, it is important to understand the basic construction of vertical shaft hydrounits. Sep 01, 2015 this alignment training course covers areas such as. A practical guide to shaft alignment plant services. Before starting the pump installation process mechanical or ac engineer to study the pump manufacturers written installation and alignment instructions. Alignment check is to be performed for both inlet and outlet lines. Pump out of alignment or shaft bent check for overall pump concentricity, remove and straighten bent shaft, consider replacing bent shaft 5. Alignment of vertical pumps empowering pumps global pump. A simple and effective procedure for shaft alignment of rotating equipment. Definitions of shaft alignment and associated termshow shafts become aligned and unalignedpump alignment procedure using a dial indicator. Many vertical pumps utilize a flexible coupling to transfer power from the motor to the pump, so proper shaft alignment is an important part of overall machine reliability.
The purpose of this document is to provide the reader with enough information to align a vertical shaft hydrounit within acceptable limits. The alignment of the pump flanges to the connecting piping is called flange alignment. This online shaft alignment training course by cte skills features highquality and informative video that walks you through dial indicator shaft. Revised 2000 roger cline hydroelectric research and technical services group united states department of the interior bureau of reclamation denver, colorado. Is there an iso doc tell it or some industrial tradition. There is a definite relationship between the amount of mis alignment and time between failures. A practical guide to pulley alignment plant services. In most cases, the vertical motor is mounted to a nema cface adaptor. Does alignment procedure for vertical pump differ from horizontal pump alignment in anyway. The proper shaft alignment procedure is to secure the driven equipment first because moving a pump, for example, would stress. Visually check coupling, pipehangers, base bolts, coupling spacing etc. Vertical centrifugal inline pumps installation and operation instructions series. Proper alignment is the largest factor in determining the life of bearings, seals and couplings.
No laser alignment system will shoot through a steam bath. How to do the alignment for vertical pumps with motor pump. There are several steps which need to be taken for a successful alignment job. Rotating misaligned shafts produce vibration and complex fluctuating radial and axial loads that lead to breakdowns. 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.
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. Installation,operation, andmaintenance goulds pumps. Pdf basic shaft alignment workbook for industrial rotatin. An essential component of any successful alignment procedure is the. Model vit installation, operation, and maintenance 3 introduction and safety safety warning.
Oct 17, 2015 is video me cri 2 series vertical pump ki alignment ko tight kar rahe he. Alignment simple steps to accurate alignment its a long. Method statement for installation and balancing of chilled. To avoid small misalignment in vertical direction first support from rotary equipment nozzle is used either a spring support or an adjustable type support. Before you start this procedure, make sure that the dial indicators are properly attached for measure. Aligning vertical pumps empowering pumps and equipment. The procedure for doing reverse dial indicator alignment is not a difficult one. Vertical centrifugal inline pumps tailor made pump solutions. Dec 01, 2002 shaft alignment tolerances historically, shaft alignment tolerances have been governed by the coupling manufacturers design specifications.
Shaft alignment training course ppt presentation and machine. Alignment check must be performed with spring under as designed and in locked conditions. Installation, operation, and maintenance manual goulds pumps. Empowering pumps is the information and connection hub for the global pump industry. Shaft alignment by dial test indicator dti horizontal alignment parallel shaft alignment by dial test indicator dti vertical alignment angular pump motor the indicators are zeroed on the top and read at the bottom record the indicator reading and consider the sag compensation by subtracting it from the recorded reading move the motor to.
If possible, perform your alignment with the system down and the basin drained. This is because checks are so easy and fast to carry out. Aim to have all soft foot readings within 2 mils thou. Update your shaftalignment knowledge peerless pump. This procedure is to be used as a guide for the initial system installation, or as a reference for optics replacement, or for re alignment if necessary. A layout drawing should be approved and pumps should be installed in locations indicated making sure that there is sufficient access space for periodic maintenance, removal of motors impellers. If any pressurecontaining device is overpressurized, it can explode, rupture, or discharge its contents. 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. 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. Precision maintenance pre alignment check list following this checkoff list will ensure an alignment that will be kept when the machine is in operation and will last for an extended mean time between repairs. This list contains all the items that should be checked in a worst case scenario. The party responsible for assembling the pump set shall.
Care has been taken by the authors, pruftechnik ltd, in the preparation of this publication. Most pump manufacturers and repairers recommend that when repairing damaged pumps, bearings should always be replaced irrespective of apparent condition, since it is easy to miss minor damage to the. Shaft misalignment is one of the most common reasons for bearing and mechanical seal failures. Produce pdf reports directly from the display unit and. For maintenance personnel in drinking water and wastewater. Vertical turbine pump vtp and driver alignment is critical for extending the serviceable life of the driver, pump bearings and mechanical seal assembly while also providing vibration free service of your installation. You may have heard this in the pastwe cant align our vertical pumps since there is no adjustment due the machined fit between the electric motor and pump housing. Alignment report hung seng huat engineering product co. Failure to achieve proper alignment, a condition referred to as misalignment, will result in increased pump vibration, decreased bearing life, and has the potential. How to align vertical shafts with the vertisweep measurement mode.
Laser alignment is an essential component of a viable maintenance. Professional measurement and alignment system for rotating machines. This is probably the most common configuration of coupled machines in industry. Machine alignment for maintenance personnel in drinking water and wastewater facilities. The proper shaft alignment procedure is to secure the driven equipment first, and then install the coupling to the equipment. The shafts of the pump and drive unit must be closely aligned. We have a vertical turbine pump having capacity of 20000cum per hour and pressure head 16. It is an easy, costeffective part of your preventive maintenance program. Misalignment may cause the pump and driver to operate.
The difference is also that in using a laser based alignment system the machines are actually checked. The pipe should be targeted so as not to place strain on. Easy vertical shaft alignment with vertisweep by pruftechnik. The operator must be aware of the pumpage and take appropriate safety precautions to prevent physical injury. Motorpump alignment is the process of aligning shaft centerlines between a motor and a pump. May 07, 2007 in practice, proper alignment is difficult to achieve without using alignment equipment such as dial indicators or laser alignment tools to check and correct for misalignment. It is assumed that the gantry is square to the xaxis, all support equipment is in place and properly working, and all of the. Dust, liquids and gaseous that may cause overheating, short circuit, corrosion and fire must be kept away from the pump unit. Before aligning, the pump and motor base should be level on a pad and properly grouted. Since the pump shaft can not be turned when uncoupled and resting on the bottom, the laser readings were taken using the static measurement mode, which is a process that permits a reading to be taken in any cardinal or subcardinal position.
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