HYDRO SERVICES AND REPAIRS:
24 HOUR SERVICE
Group: Maine Divisions offer complete turnkey services for all your
We can also design and implement preventive
maintenance programs for your facility.
Each maintenance program is
customized to fit your specific needs.
Our experience can help minimize your downtime, reduce your annual
and prolong the life of your hydroelectric equipment.
Schulz Group, Maine Divisions,
can design and implement preventive maintenance programs for your
facility. Each maintenance program is customized to fit your specific
needs. Our programs are always performed on time and within budget.
Complete inspection &
testing of the generator including megger, PI, drop, partial
discharge, hi-pot & EL-CID testing. Check brushes, brush holders,
air gaps, commutator and wedge inspections.
Installation of thermal
sensors, vibration sensors, proximity sensors and positioning
transducers on all critical components for local or remote
inspections including cavitation on runners, wicket gate tolerances,
guide bearing & water bearing inspections, check head cover and
linkage eccentrics, check hydraulic pressures and oil levels, check
shaft runout and alignment.
Complete inspection of
powerhouse, trash rakes, head gate and penstock.
including insulation resistance and contact resistance testing,
dielectric absorption, oil analysis, transformer turn ratio
testing and power factor testing.
Emergency Repair Proposals
Vibration Trending & Infrared Thermography
Complete Project Management
Complete Outage Management
Complete Maintenance Records & Documentation
Call us at 207-623-7500 to discuss a customized maintenance program
for your facility.
- EL-CID and/or core loop testing
- Complete restack of core laminations
- Rewinds including high voltage coils
- CO2 Dry Ice cleaning
- Stator uprate and coil redesigns
- Meet or exceed all IEEE Standards
- Complete field pole rebuilds
- Cleaning and testing rotor assembly
- Wedge tightness survey/drop test
- Wire and laser alignments of rotor and
Other Electrical Services
- Complete exciter overhauls and rebuilds
- Armature & Field Rewinds
- Upgrade-Static Conversion
- Full switchgear services
- Startup services including phase ins
Runners often suffer metal loss or develop
cracks due to foreign objects, cavitation, and abnormal operating
conditions. The Schulz Group has an extensive machine shop to
completely rebuild Kaplan & Francis runners. We also repair cavitation
holes, keyway damage & balance up to 25,000lbs.
The Schulz Group grinds, hones, and polishes bearing surfaces to restore
them to a mirror finish, and will repair any oil leaks and replace bearing
shoes if required.
- Babbitt bearing repairs and repours with
- Water bearing restaving &
- Thrust bearing reconditioning to a
- Bearing Conversions
- Wicket gate, curb rings and head cover
- Shaft fabrications from castings to 18
- Field machining stationary wear rings
- Laser, 4 wire & center wire
- Keyway broaching
- Welding services
Digital El-CID testing represents the latest
and most superior technology in stator core imperfection detection.
- Rapid and Safe Setup
- Low Power Supply Requirements (1-3
- Significant Reduction in
- Instant Analysis of Stator
- Ability to Re-Test During
- Can Be Done With Coils in
- Detects Deep Seated
Faults-Even Under Windings
Metal Stitching is a cold repair process
for broken and cracked castings. Metal stitching can be performed on-site
without the need for major disassembly. The result is a repair stronger
than the original design. For more detailed information about metal
stitching, click here.
Our predictive maintenance services will
monitor the condition of your equipment over time and help prevent
catastrophic failures and unscheduled downtime. Services include Vibration
Trending/Analysis and Infrared Thermography
Dry Ice Cleaning
Dry ice cleaning is a unique, technologically
advanced cleaning method that is easy to use, harmless to the environment,
and exceedingly cost effective. The CO2 cleaning system uses rice-like dry
ice pellets, called DRICE, blasted at subsonic or supersonic speeds to
remove surface contaminates.
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