How We Repair Your Unit

Our process involves a teardown of your OLSON CONTROLS S-3EF-5.5-70-S, ultrasonic cleaning, and reassembly with quality parts to restore operation.

About Our Shop

We’ve built our shop around one thing: industrial repair. With decades of hands-on experience and deep product knowledge, we deliver consistent results.

One-year warranty on all OLSON CONTROLS S-3EF-5.5-70-S valve repairs

Frequently Asked Questions

Yes. We diagnose first, then provide a repair recommendation with our findings. No work begins without your approval.

If the main housing or board is intact, repair is usually the better option. We can restore most units to working condition with tested parts.

Standard turnaround is 1-3 weeks. Rush options are available for time-sensitive situations.

Helpful but not required. If you can photograph the label, connectors, and overall unit, it gives our team a head start.

Even if the tag is worn off, we can often match the unit based on shape, size, and internal configuration.

Disassembly and Rebuild Procedure

The process begins with disassembly and visual evaluation. We then clean, replace worn pieces, and reassemble the valve to restore its function.

  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.
  • Final Performance Verification: After reassembly, each valve undergoes bench-testing against published performance specs.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.

Testing and Bench Verification

With our 13-stand test facility and a Hagenbush proportional valve system, we verify flow curves, hysteresis, frequency response, and more. Performance reports and graphs are available for purchase on request. Our operational testing verifies spec-level operation.

Technical Specifications

Every OLSON CONTROLS S-3EF-5.5-70-S we service is tested under typical applications. Our diagnostics verify performance against published specifications. Specification sheets and Performance data are available for purchase upon request.

Lead Times and Support

As a dedicated source for OLSON CONTROLS S-3EF-5.5-70-S services, NC Servo Tech targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Maintenance Tips

  • Monitor operating temperatures to identify potential issues before failure occurs.
  • Perform fluid analysis to detect contamination early and prevent system damage.
  • Check system pressure regularly to verify it stays within the OLSON CONTROLS S-3EF-5.5-70-S rated operating range.

Request a Quote for Your OLSON CONTROLS S-3EF-5.5-70-S Maintenance

Request pricing, availability, and turnaround for your OLSON CONTROLS S-3EF-5.5-70-S. NC Servo Tech provides warrantied repair with a 1-year warranty. Contact us to set up your repair.

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NC Servo Tech is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by OLSON or any original equipment manufacturer (OEM), nor do we claim to be a OLSON service center. All brand names, trademarks, model numbers, and part numbers referenced on this page are the property of their respective owners and are used solely for identification and compatibility purposes.