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New Motors
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Selection assistance on a broad selection of motors. Line Card
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Installation/Start-Up Services
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Electrical Equipment Company will provide personnel on site during installation and start up of a new motor. more
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Predictive Maintenance
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Predictive Maintenance (also called reliability centered maintenance or planned preventive maintenance) identifies failures before they occur by careful observation and record keeping of machinery condition…more
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Full Service Repair Shop
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Repair AC & DC motors, transformers, generators, centrifugal and submersible pumps, solid state circuit boards, gears and gear boxes….more
Motor Repair Specifications Guide…more
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Installation and start-up performed by Electrical Equipment Company ensures that the motor and the machine that it is connected to will perform to their full rated capacity. Potential problems that are electrical or mechanical in nature will be identified immediately so they can be properly resolved. Problem resolution on start-up precludes troublesome and costly warranty issues and increases the probability that the machine will continue to function at rated capacities far beyond the manufacturer’s warranty. We have experienced and respected personnel that will stand by your side to explain the details of any deficiencies, and to propose remedies that may require justification to, and co-operation from, the machineries’ various manufacturers. Additionally, by participating in installation and start-up, Electrical Equipment Company will be better prepared to address maintenance and repair needs that arise over the life of the machine. You will forge a relationship with a “partner” that can be relied upon for continued support.
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Service
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Link
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Evaluation of Electrical Controls and Electrical Service
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Mount Coupling or Pulley to Motor
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Install Motor/ Perform Shaft Alignment
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Couple Motor to the Load
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Attach Conduits and Fittings
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Electrical Connections are Made
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Guards are Installed/Installation is Inspected
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Electronic and Electrical Controls are Programmed
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Start Up is Observed
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Final Report is Prepared and Issued
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Evaluation of Electrical Controls and Electrical Service
This step of our start up service includes:
- Determine if electrical phase and voltage is compatible with the equipment being installed.
- Determine if electrical service is of sufficient ampacity.
- Determine if over current protection is capable of handling starting currents and any expected intermittent overload conditions.
- The electrical service is locked out and tagged out before work commences.
- During this stage of start up service EECO will:
- Measure shaft and coupling/pulley bore to determine correct fit.
- Measure equipment location and determine coupling/pulley mounting position.
- Mount coupling/pulley using appropriate methods (i.e.: heating, freezing, pressing).
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This service includes:
- Transport, lift, and place motor into position.
- Do measurements to shim “soft foot”.
- Shim motor feet to achieve accurate shaft alignment using dial indicators and/or laser equipment. (Parallelism and offset corrected to close tolerances as dictated by the application.)
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Couple Motor to the Load
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Belt drives
1. Pulleys are mounted to achieve correct axial position on the motor shaft.
2. Belts are inspected to verify size, type, and imperfections.
3. Belt tension is set to appropriate levels to eliminate excessive belt slippage. (notes are taken to document belt tension specifications utilizing the “deflection method”.
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Couplings
1. Coupling components are inspected and evaluated to be of the proper type and size to handle the load.
2. Coupling is properly assembled using adequate amounts of specified lubricant.
Attach Conduits and Fittings
? Electrical conduits are securely attahced to the motor.
? Temperature sensors, vibrations sensors, and heater conduits are securely attached to the motor.
? Lubrication fittings and lines are attached and secured as specified.
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Electrical Connections are Made
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Power cable connections are made to the motor windings using wire nuts, split bolt connectors, and/or compression type ring tongue connectors as specified by the customer.
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- Proper rotation of the motor is tested and confirmed by brief application of power to the otor. Incorrect rotation is corrected by electrical reconnection of the motor windings.
- Power cable connections are electrically insulated and carefully positioned to eliminate the danger of ground faults.
- Feed back devices are tested and verified to be in operating condition.
- Sensor wiring and leads are connected in accordance with equipment specifications and properly insulated.
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Guards are Installed/Installation is Inspected
- Guards covering couplings and belt drives are mounted and securely attached.
- The area of the installation is cleared of loose fasteners, debris, and materials.
- Scrap material is properly disposed.
- Personal safety issues are addressed and the machine is pronounced ready for start-up.
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Electronic and Electrical Controls are Programmed
- Solid state drives are programmed in accordance with manufacturer's specifications.
- Mechanical timers are adjuested to their preliminary settings.
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Start Up is Observed
? The customer’s maintenance and operations personnel confer with EECO personnel to verify that all necessary systems are functional.
? Observations are made and noted as follows:
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Open circuit line voltage is measured and recorded.
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Minimum voltage during start is captured and recorded.
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Maximum starting current is captured and recorded.
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Experienced personnel listen for unusual sounds during the acceleration of the machine. Any unusual occurrence prompts immediate termination of the test.
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When the machine achieves operational speed, unloaded motor amperages are recorded (as is possible).
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Vibration readings are taken to establish “unloaded” baseline.
? If all results are satisfactory, the machine and motor are brought under full load conditions.
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Full load motor amperages are measured and recorded.
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Line voltages at full load conditions are measured and recorded.
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Experienced personnel listen for unusual sounds during the full load run. Any unusual occurrence prompts immediate termination of the test.
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Vibration spectrums are recorded to establish a “loaded” baseline.
? The machine will continue to be operated at varying speeds and load conditions to confirm proper operation in all expected circumstances.
? The documentation of the installation and start up is formalized by preparation of a type written report.
? Print-outs from electronic instruments are copied and included in the report.
? The report is delivered to the customer with a duplicate copy retained by Electrical Equipment Company in order for us to promptly answer any customer questions or concerns.
Today, Predictive Maintenance has surpassed Preventative Maintenance.
Predictive Maintenance identifies failures before they occur by careful observation and record keeping of machinery condition.
A good Predictive Maintenance program works to reduce the efforts spent on Preventative Maintenance by redirecting the human resource to improving machinery condition rather than simply maintaining it.
That means being mindful of the fact that “man’s machines” will fail, and being willing to invest enough energy and elbow grease to anticipate weaknesses in the machine, and doing the repairs before a failure occurs.
It means being Pro-active instead of being Re-active.
Predictive Maintenance Programs require a large investment in specialized equipment and a real commitment of the Human Resource. Most companies lack the resources to implement a comprehensive and effective program.
Electrical Equipment Company can quickly provide the benefits of Predictive Maintenance at a reasonable cost. You will not experience a large capitol outlay and the pain of a long “learning curve” for their personnel while the benefits of the program would be unrealized.
EECO Predictive Maintenance Service Include:
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Vibration Analysis
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All moving parts produce a range of vibration frequencies... more
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Thermography
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Infra red scanning of electrical devices… more
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Grease Analysis/Oil Analysis
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Oil and grease samples are evaluated for contaminants…more
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Motor Shaft Rotation (stores motors)
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Stores motors should have their shafts rotated every 90 days…more
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Storage Requirement Recommendations
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Proper storage of a motor insures a working motor in time of failure…more
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Ultrasonic
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Check for Corona discharge and leak detection in pipe and duct systems… more
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Cleaning Services
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Motors can become packed with grease, dirt or pulp…more
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All moving parts produce a range of vibration frequencies and amplitudes that make up a vibration signature. We can measure that vibration, and using sophisticated analysis and modeling software, determine the source of the vibration. Vibration can be an indicator of wear, misalignment, out of balance parts, and more. Our equipment enables us to analyze the vibration signature over a period of time and detect trends that indicate the need for maintenance in order to prevent unexpected downtime.
Motors in storage should have their shafts rotated three revolutions every 90 days. This will re-lubricate the bearing balls or rollers. As a motor sits idle on a shelf, the grease will settle in the bottom of the bearing cavity allowing slight pitting to form reducing the life of the bearing.
Oil and grease samples are taken and evaluated. We can see if there are contaminants and if the lubricant properties are within specifications. This allows us to maximize the life of the lubricant – and your motor.
Storage requirement recommendations
Often customers store their motors in environments that can cause damage to the motors before they are even installed. Upon failure of a motor in production, the customer finds that the stores motor is also non-functional. Electrical Equipment Company will inspect your stores motors and make recommendations for proper stores conditions to ensure your motor is functional when it is needed. This service can be expanded to include shaft rotation and periodic megger checks.
Through infrared scanning of electrical devices, we are able to determine if loose connections are present. Heat from improper operation is recorded and identified and the proper actions are taken to repair the problem.
Ultrasonic
Ultrasonic testing will identify high voltage arcing, tracking, and corona discharge. Leaks are detected in valves, steam traps, vacuum systems, heat exchangers, ductwork, gaskets, and seals.
Motors can become packed with grease, dirt or pulp causing the motor to malfunction. Electrical Equipment Company will clean these motors with solvent and/or dry ice blasting. This technique will extend insulation life and your motor will continue to run at peak efficiency.
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Electrical Equipment Company will repair your motors on time and to your specifications in one of our six EASA* approved facilities. You enjoy superior repair work without the overhead expense of maintaining a repair shop.
The long history, over 75 years, of quality service and support that Electrical Equipment Company customers enjoy speaks for itself. Our organization, with its multiple locations, enables Electrical Equipment Company to promptly provide a superior and uniform level of service to all of our customers’ locations.
Electrical Equipment Company takes great pride in having the knowledge and the muscle to get the job done. The beauty of that is more than skin deep when you consider the capitol investment that we have made, and the large number of exceptional people that Electrical Equipment Company retains year after year.
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Reconditioning Services
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Custom Machine Work
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Mechanical Modifications of Existing Equipment.
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Foundation Manufacturing
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Installation
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Mig and Tig Welding
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Rewinds
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AC and DC
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Electrical Redesign
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Voltage Changes
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Speed Changes
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Horsepower Changes
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Receiving
Establish Job Priority
Rush (Overtime)
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Rush Overtime jobs are identified and pre-empt all other incoming work.
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Customer contact is immediately initiated to confirm arrival of all Rush Overtime repairs.
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Authorization for OVERTIME CHARGES will be confirmed prior to expenditure of Overtime.
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Work will be scheduled in accordance with parallel critical path planning in order to make best possible delivery.
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Parts processing schedules will be altered to meet the requirements of all Rush Overtime Jobs.
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Parts and materials procurement will utilize “Next Day Air” or other premium delivery services to make best possible delivery with out regard to cost.
Rush (no overtime)
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Rush scheduling pre-empts all other jobs in process from that customer.
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Work is scheduled in accordance with critical path planning.
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Parts to be processed for Rush Jobs will precede normal parts processing.
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Parts and materials procurement will utilize cost saving freight programs to coordinate parts arrival with completion of repair operations.
Normal
Initiate Job Card
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Reference Customers Location and Customer Contact information.
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Special customer instructions are noted.
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Identify motor using Serial Number.
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Record all nameplate data.
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Motor is tagged and stamped with the Job Card Number.
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Motor is visually inspected for damage, missing parts, and identification and notation of accessory devices.
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Job is assigned to technician.
Insittute Administrative Controls
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Job Card is entered into shop computer system
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Parts and Materials Requisition forms are prepared.
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Our computerized Purchase Order System is utilized to expedite parts ordering and to coordinate on-time deliveries.
Repair/Replace Assessment
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Cost of standard replacement motor is established.
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Cost of any special modifications to standard replacement motor is estimated.
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Customer is quoted replacement motor if repair is not advisable.
Prior to Disassembly
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Broken or damaged parts are noted on the Job Card.
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Assembly orientation is noted (i.e.: shaft left/right, terminal box, etc.)
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Coupling, pulley, and other accessories are inspected for wear or damage.
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Coupling or pulley location on shaft is measured and noted on job ticket.
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Shaft extension is checked for bent shaft (dial indicator)
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Lead wires are examined for damage and identifiable markings. Defects are noted.
Prior to Disassembly
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Meg-Ohm Meter Testing
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High Potential Ground test (if Meg-ohm readings are acceptable)
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High Potential Surge Test (if High Potential ground test is acceptable)
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Test Run at line voltage (if operable)
No load current is recorded
Bearing condition is recorded
Balance condition is recorded
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End brackets, terminal boxes, and other parts are drilled or punched for identification and correct orientation.
Double mark on drive end, single mark on opposite end
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Coupling or pulley is removed
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Motor is disassembled. All fasteners and threaded holes are examined.
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Parts are marked with Job Number using metal tags.
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Rotor is stamped with Job Number after removal from stator.
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Bearings are removed from shaft
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Large parts are cleaned using high pressure hot water and detergent
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Small parts are solvent cleaned
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Other parts are sandblasted or glass bead blasted as needed.
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Electrical windings are baked dry at 300 degrees F
Following wash and bake-out/prior to reconditioning
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Electrical windings are meggered again to ensure that they were adequately dried.
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High potential ground tests are performed if omitted earlier due to poor megger readings
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High Potential Surge Testing is performed if omitted earlier due to poor megger testing and Secondary High Potential Testing is OK.
Following parts cleaning
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All critical shaft diameters are micrometer checked
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Bearing Housings are micrometer checked.
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None critical diameters are caliper checked
i.e.: shaft passages through housings, shaft diameters at passages
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Coupling Bores are micrometer checked. (Correct fit to shaft is confirmed)
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If single phase rotor testing was not performed due to winding failure rotors will be growl tested.
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Visual Inspections are repeated to discover any looseness or mechanical wear that was concealed by dirt and debris.
· Varnish treatments
· Dips and bakes
· Reapplication of abrasion protection systems.
· Re-lace and re-tie windings and leads (as needed).
· Repair or replace damaged leads (as needed).
· Lead Lugs are inspected and replaced if damaged
· Preliminary measurements are taken to ensure adequate mechanical clearances of new winding.
· Failed windings are placed in a temperature controlled burnout oven and roasted at temperatures not to exceed 650 degrees F.
· Winding data are taken during removal of the old winding.
· Winding data are computer analyzed to verify correct magnetic densities to achieve optimum performance of repaired motor.
· Cores are inspected for arcing damage and mechanical looseness.
· Core Loss Testing is performed to verify rebuildability of core iron and to confirm that “hot spots” are eliminated.
· Damage to core iron is corrected by various means as required and in accordance with quoted workscope.
· Core Loss testing is repeated to verify the success and effectiveness of core iron repairs.
· Cores are cleaned and painted prior to rewinding
· Cores are re-insulated using Class H rated materials
· Coils are made using Class H, Quantum Shield Spike Resistant Magnet Wire.
· Class H Phase insulation is utilized in all windings. Additionally, phase insulation is retained in correct position through the use of a lacing band.
· Lead wires and endturns are laced at each slot.
· All completed windings undergo rigorous and repeated High Potential Proof Testing as dictated by standards developed by the Institute of Electrical and Electronics Engineers, Inc. to ensure rugged durability and longevity.
· Completed windings receive multiple dips and bakes to seal and solidify the new windings.
· Formed coil rewinds are Vacuum Pressure Impregnated.
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Machining Operations are performed in house with strict adherence to close tolerances as dictated by the Anti-Friction Bearing Manufacturers Association (AFBMA) and manufacturers specifications.
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All shaft diameters are machined concentric to less than .001” total indicated run-out.
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Shaft extension diameters and run-outs are restored to specifications by various means in accordance with standard industry practice as established by the Electrical Apparatus Service Association (EASA), and the National Electrical Manufacturers Association (NEMA).
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Welding operations are performed by experienced personnel using specific materials required for the application.
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Dynamic balancing is performed on all repaired rotating assemblies to fine tolerances using modern computerized equipment. Balance correction weights are permanently attached.
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Excess varnish deposited during processing is removed prior to assembly.
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All interior surfaces are painted after cleaning and completion of required mechanical repairs.
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Defective parts are replaced.
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Bearings are specially prepared for re-lubrication and mounted using Induction Heating equipment.
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Bearings are fully lubricated and made ready for extended service.
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Motor is re-assembled with correct orientation of all parts by utilizing marks made during disassembly.
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Shop Foreman verifies correct orientation of assembled motor.
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Final Testing is performed in the presence of the Shop Foreman
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Meg-ohm meter tests are repeated.
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High potential Ground Fault Test is repeated.
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Motor shaft is rotated by hand to verify free rotation and adequate clearances.
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Motor leads are connected to Test Board in normal running configuration and motor is operated at rated voltage.
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Line voltage readings are recorded.
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Line current readings are recorded.
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Bearing temperatures are monitored and recorded for the duration of the test run (one hour minimum).
- In the event of shaft or housing repairs test run is to continue beyond the one-hour minimum until such time as bearing heat rise is stabilized and found to be within acceptable limits.
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Vibration levels are monitored throughout testing.
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If test results are found to be within acceptable limits motor is shutdown and final assembly and mounting of covers, fans, couplings, and pulleys is completed. (Correct Coupling/Pulley location is verified by Shop Foreman)
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Motor is reconnected to the Test Board and run again at line voltage.
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Vibration monitoring is repeated with motor in final assembled condition.
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Motor exterior is blown down with compressed air solvent cleaned.
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Paint is applied as dictated by the customer or Electrical Equipment Company specification.
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Shop Foreman reviews repair documentation as to accuracy and completeness.
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Shop Foreman confirms nameplate information as to accuracy and completeness.
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Shipping documents are prepared to reflect complete motor nameplate data, Job Number, Customer Purchase Order Number, Point of origin, and ship to destination. Detailed descriptions of work performed is also featured on all Invoices and shipping documents.
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Complete repair documentation and test results are available on request.
Bearing Replacement
Ball Bearing fits are critical to the longevity of machinery. Bearings carry tremendous loads and have a lot of different forces working against them.
The tolerances on the next two pages are for two different dynamic situations. Careful attention to the nature of the application is required to use the right “fit”. It is imperative that the two sets of tolerances not be intermingled or the internal clearances in the bearings may be compromised.
Typical ABEC-1 Application
Shaft is rotating relative to the radial load
Typical ABEC-3 Application
Shaft is stationary relative to the radial load
ABEC-1 bearing fits are intended for anti-friction bearing applications where the inner race of the bearing rotates relative to the radial load. In these applications the outer race is stationary relative to the radial load.
The inner race fits are Interference Fits The outer race fits are Clearance Fits
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Shaft Fits
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Housing Fits
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ABEC-1
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ABEC-1
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00
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0.3939
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0.3936
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200
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1.1811
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1.1816
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01
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0.4726
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0.4723
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201
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1.2598
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1.2604
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02
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0.5908
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0.5905
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202
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300
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1.3780
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1.3786
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03
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0.6695
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0.6692
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301
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1.4567
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1.4573
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04
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0.7878
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0.7875
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203
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1.5748
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1.5754
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05
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0.9847
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0.9844
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|
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302
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1.6535
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1.6541
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06
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1.1815
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1.1812
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204
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303
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1.8504
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1.8510
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07
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1.3785
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1.3781
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205
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304
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2.0472
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2.0479
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08
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1.5753
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1.5749
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206
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305
|
403
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2.4409
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2.4416
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09
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1.7722
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1.7718
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207
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306
|
404
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2.8346
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2.8353
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10
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1.9690
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1.9686
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|
208
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307
|
405
|
3.1496
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3.1503
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11
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2.1660
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2.1655
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|
209
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|
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3.3465
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3.3474
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12
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2.2328
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2.3623
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|
210
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308
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406
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3.5433
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3.5442
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13
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2.5597
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2.5592
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|
211
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309
|
407
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3.9370
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3.9379
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14
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2.7565
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2.7560
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|
212
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310
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408
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4.3307
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4.3316
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15
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2.9534
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2.9529
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|
213
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311
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409
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4.7244
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4.7253
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16
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3.1502
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3.1497
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|
214
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|
|
4.9213
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4.9233
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17
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3.3472
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3.3466
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|
215
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312
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410
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5.1181
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5.1191
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18
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3.5440
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3.5434
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|
216
|
313
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411
|
5.5118
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5.5128
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19
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3.7409
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3.7403
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|
217
|
314
|
412
|
5.9055
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5.9065
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|
20
|
3.9377
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3.9371
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|
218
|
315
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|
6.2992
|
6.3002
|
|
21
|
4.1346
|
4.1340
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|
|
|
413
|
6.2992
|
6.3002
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|
22
|
4.3314
|
4.3308
|
|
219
|
316
|
|
6.6929
|
6.6939
|
|
|
|
|
|
220
|
317
|
414
|
7.0866
|
7.0876
|
|
|
|
|
|
221
|
318
|
415
|
7.4803
|
7.4814
|
|
|
|
|
|
222
|
319
|
416
|
7.8740
|
7.8751
|
|
|
|
|
|
|
|
417
|
8.2677
|
8.2688
|
|
|
|
|
|
224
|
320
|
|
8.4646
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8.4657
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|
|
|
|
|
|
321
|
418
|
8.8583
|
8.8594
|
|
|
|
|
|
226
|
|
|
9.0551
|
9.0562
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|
|
|
|
|
|
322
|
|
9.4488
|
9.4499
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ABEC-3 bearing fits are intended for anti-friction bearing applications where the inner race of the bearing is stationary relative to the radial load. In these applications the outer race rotates relative to the radial load.
The inner race fits are Clearance Fits The outer race fits are Interference Fits
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Shaft Fits
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Housing Fits
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ABEC-3
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ABEC-3
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|
|
|
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00
|
0.3935
|
0.3931
|
|
200
|
|
|
1.1803
|
1.1811
|
|
|
01
|
0.4722
|
0.4717
|
|
201
|
|
|
1.2588
|
1.2598
|
|
|
02
|
0.5904
|
0.5899
|
|
202
|
300
|
|
1.3770
|
1.3780
|
|
|
03
|
0.6691
|
0.6686
|
|
|
301
|
|
1.4557
|
1.4567
|
|
|
04
|
0.7871
|
0.7866
|
|
203
|
|
|
1.5738
|
1.5748
|
|
|
05
|
0.9840
|
0.9835
|
|
|
302
|
|
1.6525
|
1.6535
|
|
|
06
|
1.1808
|
1.1803
|
|
204
|
303
|
|
1.8494
|
1.8504
|
|
|
07
|
1.3776
|
1.3770
|
|
205
|
304
|
|
2.0460
|
2.0472
|
|
|
08
|
1.5744
|
1.5738
|
|
206
|
305
|
403
|
2.4397
|
2.4409
|
|
|
09
|
1.7713
|
1.7707
|
|
207
|
306
|
404
|
2.8334
|
2.8346
|
|
|
10
|
1.9681
|
1.9675
|
|
208
|
307
|
405
|
3.1484
|
3.1496
|
|
|
11
|
2.1650
|
2.1643
|
|
209
|
|
|
3.3451
|
3.3465
|
|
|
12
|
2.3618
|
2.3611
|
|
210
|
308
|
406
|
3.5419
|
3.5433
|
|
|
13
|
2.5587
|
2.5580
|
|
211
|
309
|
407
|
3.9356
|
3.9370
|
|
|
14
|
2.7555
|
2.7548
|
|
212
|
310
|
408
|
4.3293
|
4.3307
|
|
|
15
|
2.9524
|
2.9517
|
|
213
|
311
|
409
|
4.7230
|
4.7244
|
|
|
16
|
3.1492
|
3.1485
|
|
214
|
|
|
4.9197
|
4.9213
|
|
|
17
|
3.3460
|
3.3452
|
|
215
|
312
|
410
|
5.1165
|
5.1181
|
|
|
18
|
3.5428
|
3.5420
|
|
216
|
313
|
411
|
5.5102
|
5.5118
|
|
|
19
|
3.7397
|
3.7989
|
|
217
|
314
|
412
|
5.9039
|
5.9055
|
|
|
20
|
3.9365
|
3.9357
|
|
218
|
315
|
|
6.2976
|
6.2992
|
|
|
21
|
4.1334
|
4.1326
|
|
|
|
413
|
6.2976
|
6.2992
|
|
|
22
|
4.3302
|
4.3294
|
|
219
|
316
|
|
6.6913
|
6.6929
|
|
|
|
|
|
|
220
|
317
|
414
|
7.0850
|
7.0866
|
|
|
|
|
|
|
221
|
318
|
415
|
7.4785
|
7.4803
|
|
|
|
|
|
|
222
|
319
|
416
|
7.8722
|
7.8740
|
|
|
|
|
|
|
|
|
417
|
8.2659
|
8.2677
|
|
|
|
|
|
|
224
|
320
|
|
8.4628
|
8.4646
|
|
|
|
|
|
|
|
|
|
8.6596
|
8.6614
|
|
|
|
|
|
|
|
321
|
418
|
8.8565
|
8.8583
|
|
|
|
|
|
|
226
|
|
|
9.0533
|
9.0551
|
|
|
|
|
|
|
|
322
|
|
9.4470
|
9.4488
|
|
|
|
Division
|
Contact email
|
Contact Phone
|
|
Augusta
|
|
706-826-7622/800-993-EECO
|
|
Raleigh
|
|
804-278-4141/800-993-EECO
|
|
Richmond
|
|
804-278-4141/800-993-EECO
|
|
VP of IMS
|
|
919-754-5113/800-993-EECO
|