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Schulz Electric Hydroelectric Hydroelectric Services Turnkey Services and Maintenance Programs 24-Hour Emergency Service ©2016 Schulz Group, a brand of Timken Gears & Services Inc. All rights reserved. Complete Mechanical and Electrical Services for the Hydroelectric Industry Schulz Group’s hydroelectric specialists at Maine Industrial Repair provide comprehensive maintenance programs and repair services for hydroelectric generation facilities. Our experience can help minimize downtime, reduce annual maintenance expenses, and prolong the life of hydroelectric equipment. Schulz Electric and Maine Industrial Repair Services are ISO 9001:2008 Certified. Schulz Group’s attention to detail and quality standards are second to none in the industry. Now part of the Timken Company, Schulz Group is dedicated to expanding its proven reputation as the leader in hydroelectric generator services. Schulz Group offers complete services for both horizontal and vertical units. Schulz Group has the capability to service customers’ equipment, from On-site crews disassemble a generator waterline to exciter, as well as controls, switchgear and mechanical parts. prior to repair. Industries served • Waste Water Treatment • Municipalities • Hydroelectric Power Generation • Fresh Water Treatment • Building Maintenance • Nuclear Power Generation • Manufacturing • Schools and Universities • Engineering Support • Paper Mills • Power Generation • Renewable Energy Applications ©2016 Schulz Group, a brand of Timken Gears & Services Inc. All rights reserved. Maintenance Programs On-site inspection of a generator as part of a On-site inspection of a horizontal unit Technicians have the capability to perform complete preventive maintenance program. prior to mechanical repairs. in-place repairs to generator coils and poles. Do you know the true cost commitment to customers and plays • Complete mechanical inspections of unplanned downtime? a vital role in providing solutions of guide bearings, head covers, designed to return equipment to linkage eccentrics, wicket gates, How long can you go without your like new condition. water bearings, runner cavitation, most critical units? Schulz Group and shaft alignment. will design and implement preventive Our programs include: maintenance programs for your facil- • Complete inspection of power- ity. Each maintenance program is • Complete inspection and testing of house, trash rakes, head gate customized to fit specific needs and the generator including insulation and penstock. offers 24-hour emergency service. resistance, volt-drop, PI, hi-pot, The end result is lower overall costs, power factor and EL CID testing. • Full switchgear services include increased uptime and a dedicated performing electrical testing and • Maintenance technicians will maintenance on circuit breakers, service provider supporting you inspect brushes, brush holders, every step of the way. transformers, cables and air gaps, commutator, slip rings protective relays. From motors and generators, to and wedges. gearboxes and switchgear, Schulz • Installation of thermal sensors, Group offers a full suite of repair, vibration sensors, proximity upgrade, service and maintenance sensors and positioning trans- solutions. Our ISO 9001:2008 ducers on critical components certification is part of our ongoing for local or remote monitoring. Technicians preparing for switchgear and breaker maintenance at customer site. Completed and reassembled generator. ©2016 Schulz Group, a brand of Timken Gears & Services Inc. All rights reserved. Electrical Services Technician taking winding data prior Pole piece reinsertion and reconnection Core loop test shows core degradation to stripping and rebuild. after service and rewind. prior to restack and rewind. Schulz Group technicians utilize Rotor Predictive and their experience and knowledge to Diagnostic Services provide high quality rotor field coil • Complete field pole rebuilds rebuilds, stator rewinds and core Predictive maintenance can help avoid • Cleaning and testing rotor iron restacks, including uprates catastrophic failures and reduce down- assembly and coil redesigns. time by identifying machines near • Wedge tightness survey/drop test failure, or by monitoring a machine’s Stator performance over time. • Wire and laser alignments of • EL CID and/or core loop testing rotor and bearings Infrared thermography • Complete restack of core Other electrical services Infrared thermography can provide laminations early warning of problems with critical • Complete exciter overhauls equipment before catastrophic failure. • Rewinds including high voltage and rebuilds By identifying overheating electrical coils connections and other machine com- • Armature and field rewinds • CO2 dry ice cleaning ponents, repairs can be scheduled to minimize downtime. (cryogenic cleaning) • Full switchgear services Vibration trending and analysis • Stator uprate and coil redesigns • Startup services including phase ins • Repairs meet or exceed all Vibration analysis and trending is a IEEE standards method of evaluating current machine condition and monitoring a machine’s changes over a period of time. It can also be used to pinpoint a source of several problems such as misalign- ment, imbalance and bearing issues. On-line motor testing This in-service motor analyzer takes the next step in providing complete predictive and preventive maintenance programs. It provides root cause analysis through the separation of mechanical and electrical issues and is designed to pinpoint the challenges that rotating machinery faces. New stator core shown prior to rewind, and after successful restack. ©2016 Schulz Group, a brand of Timken Gears & Services Inc. All rights reserved. Mechanical Repairs Refurbished runner as part of a Large runner being balanced Bearing repair services available for thrust, mechanical rebuild. in-house after repair. water and roller bearings, with additional remanufacturing capability through Timken. • Keyway damage repair Schulz Group offers a complete On-Site Services range of mechanical services for • Balancing services the hydro industry such as repairs Many times, repairs and maintenance to runners, wicket gates and • Complete bearing services services can be performed on-site head covers, as well as complete with little or no disassembly required. bearing repair services. • Wicket gate, curb rings and This allows production to stay at a head cover rebuilds maximum while downtime is held to Our extensive machine shop an absolute minimum. has the capability to completely • Shaft fabrication rebuild Kaplan and Francis runners. • Dynamic balancing and laser align- • Field machining We also repair cavitation holes, ment are applicable on all rotating equipment and will reduce vibration, keyway damage and balance • Metal stitching equipment up to 60,000 lbs. resulting in increased bearing life • Welding services and a smoother running unit with Services include: fewer breakdowns. • Keyway broaching • Runner repairs • Lead and asbestos removal provided • Gearbox services with negative pressure containment • Cavitation hole repair tenting. • Infrared thermography identifies overheating electrical connections and provides significant warning of potential problems. • Vibration trending and analysis can diagnose imbalance, misalignment and bearing issues on the spot. • On-line motor testing is an advanced data collection service. It pinpoints the challenges that rotating machin- ery faces by separating mechanical and electrical issues. • Metal stitching is a mechanical bonding process that can repair damaged sections of machinery on-site with little or no disassembly. In-house machining of large generator shaft. ©2016 Schulz Group, a brand of Timken Gears & Services Inc. All rights reserved. Specialty Services Catastrophic damage to a housing Repaired housing after metal stitching EL CID Technician verifying the successful as seen prior to metal stitching. is complete. completion of restack and rewind via EL CID. Our specialty services ensure that EL CID testing • Significant reduction in safety equipment is returned to like new EL CID testing is the modern way to hazards condition. test stator core insulation and safely • Instant analysis of stator core Metal stitching detect insulation breakdown condition between core laminations. Metal stitching is a unique and highly • Detects deep seated faults, developed mechanical bonding pro- With fully digital processing, digital even under windings cess that is used to repair broken EL CID produces results that have an and damaged castings. improved clarity, especially CO2 dry ice cleaning noticeable when the results have • Repaired areas are restored to been acquired in a noisy CO2 dry ice cleaning is an efficient original strength environment. and cost-effective way to minimize downtime while achieving superior • Many times, repairs can be made El CID is also used as part of our cleaning results on-site without the need for major rigorous quality program. It can be disassembly used to test the quality of a repair • Non-abrasive, non-flammable and or a re-wedging, prove quality on a non-conductive • Since no heat is used, this cold new machine or provide evidence • Environmentally friendly and repair process causes no distortion of satisfactory repair. or change in properties of the contains no secondary parent metals Benefits of EL CID testing include: contaminants • Relieves locked-in stress and • Rapid setup CO2 dry ice cleaning is being used eliminates high stress area by successfully in many applications redistribution
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