Read on for a basic understanding of mechanical seals, and how they differ from packing. Industrial maintenance gasket material boiler products. Made in usa 38 inch shaft, 511 industry specification, bunan diaphragm, mechanical face seal 58 working length, 0. When two seals are arranged facing in the same direction then the. It has been the foundation for every wilfley pump design, dating back to the groundbreaking model a slurry pump in 1919. The intent of periodic maintenance is to keep the system operating at an acceptable level of service to the public. Failure analysis and troubleshooting mechanical seals and. A seal with a thick lubrication film suffers virtually no wear, since the film takes up most of. The mechanical seals course consists of four lessons designed for persons with a basic understanding of the operation and maintenance of pumps, agitators, and rotating equipment. Mechanical seal technology and selection eagleburgmann. Mechanical seal training course with working animation. This article will explain what a mechanical seal is and the key design features that make them work. The operator must be aware of the pumpage and take appropriate safety precautions to prevent physical injury. Find mechanical face seals at msc industrial supply, serving the metalworking, safety, and mro industries for over 75 years.
An api 682 guided seal selection tool is included along with details like seal. Pump maintenance michigan water environment association. With a lower k value, the safety against thermal overload will increase, but the mechanical seal may also lift off more easily. In the late 1920s, a self contained shaft seal was created from oil resistant leather assembled into a metal case. Failure to observe the instructions contained in this manual could result in personal injury and. In many cases, the repair of the mechanical seal can be a feasible option to replacing the seal with a new seal. The lessons in this course train participants to work effectively with mechanical seals. The functions, operation, and repair of common mechanical seals are demonstrated. Installation,operation, andmaintenance goulds pumps. As a worldwide mechanical seals manufacturer we offer our maintenance and repair program, providing costeffective and reliable performance. The manufacturer listings are alphabetical, refer to pages 7. The seals of the industrial age were organic ropes or packings. To prevent the seals from failing, it is extremely crucial for them to undergo proper maintenance on a regular basis. A few basic components and principles in mechanical seal design contribute to a working seal at the interface of the rotating shaft and stationary pumpmixer seal chamber housing.
Confirm that the pump is operating in its equipment reliability operating envelope eroe. Chapter 9 electrical system maintenance general all electrical systems require periodic maintenance in addition to nonscheduled maintenance caused by unpredictable events such as storms, accidents, and equipment failure. If any pressurecontaining device is overpressurized, it can explode, rupture, or discharge its contents. All of the following are the main causes of accidents except. Optional leakage management systems for arrangement 1 seals are plans 62 and 65. Maintenance people were not informededucated about mechanical seals and felt more comfortable with packing. The training course on mechanical seals covers the working, design, maintenance, installation and operation details. Unlike an oring seal, the hydraulic diameter of a bellows seal is not a fixed geometric value. This seminar is a must for anyone who is involved in the selection, applications, or maintenance of mechanical seals because it covers how this equipment operates, the latest maintenance and refurbishment techniques, and provides guidelines and rules that ensure the successful operation of all types of mechanical seals.
Mechanical seals technical manual brenner industrial sales. The complete cross reference for mechanical face seal replacement how to use this catalogue locate the manufacturer of the equipment. Installation of the new proflo seals covered single spring seal. Slide seal parts onto shaft in order according to the drawings in front of manual and any seal instructions at end of manual. A mechanical seal is simply a method of containing fluid within a vessel typically pumps, mixers, etc. Pdf unique failure mode for double mechanical seals api seal.
He continues to support training internally, at end users, and at major symposiums and conferences. Seal end view piping plan layout what, why, and where pump crosssection mechanical seal preventative maintenance viewed from drive end shows preferred gland connection orientation illustrated schematic of auxiliary components describes piping plans, their purpose, and typical applications simplified centrifugal. Double mechanical seals can be arranged in tandem or back to back. Mechanical seals should be replaced if they are leaking 3. To combat the growing labor shortage and continual turnover in the maintenance industry, american seal and packing co now offers training in industrial pumps. This article focuses on best maintenance repair practices necessary for maintenance personnel to keep equipment operating at peak reliability and. Mechanical seals can operate for many years without issue, as long as theyve been properly selected for their application. Because packing needs to contact the shaft it will eventually wear a groove into it, which can be costly to repair or replace. Since our subject is dealing with pumps, lets first explore a basic.
The seal ring which rotates with the shaft is called the rotary ring. Project standard and specifications inspection of pump. Maintenance manual chapter 9 electrical system maintenance. John crane is an american company, now a subsidiary of smiths group and provider of engineered products and services including mechanical seals, couplings, seal. Because these flood barriers are engineered with mechanical seals, no air pressure or power is needed and maintenance requirements are minimal. Model 3196 iframe installation, operation, and maintenance manual 5 introduction and safety introduction purpose of this manual the purpose of this manual is to provide necessary information for. John crane mechanical seals and seatsmating rings are precision prod ucts and must be handled appropriately. The results indicated that over 90% lacked complete basic fundamentals of mechanical maintenance. The pumped liquid has no contact to the atmosphere. Arrangement 1 seals are usually fitted with either a fixed or floating bushing as the containment device. Seal chamber and stuffing box seal chamber and stuffing box both refer to a chamber, either integral with or separate from the pump case housing that forms the region between the shaft and casing where sealing media are installed.
Srm00046, general installation, operation, maintenance and troubleshooting manual for three screw and cig series pumps,circor, 2015. Check that electrical control equipment contacts are in good condition and clean. Industrial maintenance gasket material boiler products mechanical seals compression packing epoxy coatings concrete repair providing all your mro needs and more 150 dow street, suite 316c manchester, nh 03101 800 sealpro 7325776 603 6692243. Pump installation by qualified personnel use the pump, by staff. Guidelines for predictive maintenance of mechanical seals. Refer to the motor manufacturers instructions for periodic maintenance requirements. However, it is also crucial to take note that improper mechanical seal maintenance can also lead to failure of the seal. Check for a plugged flush line orifice by taking temperature. We now offer on site training in both public and private locations for mechanical seals and pumps. Plan 03 plan 65b plan 66a plan 66b what seal flush from pump discharge through orifice. When the sealing is achieved by means of a mechanical seal, the chamber is commonly referred to as a seal chamber. Thinking of making the switch from conventional packing to mechanical seals. Blocking medium medium for blocking mechanical seals flushing medium medium for.
There are some advantages that are obvious and easy to understand, and a number of others where the benefits may not be so readily apparent. This liftout flood panel is designed for doorways or openings that require a flush threshold and where it is desired to store the panels away from the openings when not needed. Have tools required at the work bench have a clean work space free from particulate, dirt, metal shavings, etc. Packing although mechanical seals had been around for many decades, by 1955 industry had converted only a small percentage of pumps from packing to mechanical seals. The powerseal mechanical seal repair program in many cases, the repair of the mechanical seal can be a feasible and economical option to replacing the seal with a new seal. Mechanical maintenance entry test enabling objectives site maintenance training program page 1of 5 safety industrial describe industrial and mechanical safety. Mechanical seals can save maintenance people an immense amount of time and money, but only if theyre installed correctly and properly cared for. Model vit installation, operation, and maintenance 3 introduction and safety safety warning.
Inspection and maintenance of mechanical pump seals project standards and specifications table of content scope 2 introduction 2 types of mechanical seals 2 installation of mechanical seal 3 inspection of seal components prior to installation 5. Typical type 2100 seal arrangement type 2100 seal installation dimensions. To install a seal, the pump would have to be taken offline and disassembled. Mechanical seal configuration codes for torishima mechanical seals a number and a code indicate the configuration and materials used in each torishima mechanical seal. As mechanical seals can be used to seal a myriad of different products on an equally vast array of equipment, we will be primarily focusing on the use of mechanical seals on rotating shaft pumps. Furthermore, the user has got the responsibility to check what may be the consequences on. One must identify the application data or operating conditions to properly select the type of seal and materials of construction to ensure maximum performance from the seal over its lifetime. There is a lot at stake when mechanical seals break down. Increase seal chamber pressure and fluid vapor margin. Sulzer has expertise to repair all mechanical seal brands to a condition as good as new.
A question that comes up often is, why should i use mechanical seals instead of packing when packing is cheaper. Mechanical seals provide an important contribution to the operation of. Also called the heart of the curve, it assures maximum centrifugal pump mtbf by avoiding all operating areas of hydraulic disturbances. For optimum mechanical seal mtbfs, execute the following mechanical seal monitoring best practices.
The seals are classified as h, m or l according to load, with h and m indicating heavy load and l indicating light load. Mechanical seals are designed to overcome these drawbacks. These seals proved to be very effective until shaft speeds, temperatures and other parameters increased with the development of better transportation systems. Maintenancefree, compact cartridge labyrinth seals with.1329 19 70 249 413 43 1055 716 51 307 185 1037 897 791 1410 272 470 496 170 109 225 1487 95 1169 1163 944 985 821 995 1188 597 1100 862 561 965 82 810 150 1481 1297