Repair and Field Service

Proactive and Reactive Repair and Service, Both Onsite and Offsite

diagnose and repair problems with siemens drives and ABB controls

Quad Plus has the tools, ability, and experience to accurately diagnose problems with drives, controls, and circuit breakers. Our resources include manuals, guides, and schematics that give us the advantage when it comes to troubleshooting and repair. Our reputable experts have extensive knowledge of many OEM controls and circuit breakers, including Siemens, Westinghouse, GE, ABB, & Rockwell. Many also have experience and relationships directly with manufacturers. Our team of knowledgeable technicians has the skills to repair, refurbish, and retrofit large industrial circuit breakers, with a primary focus on the major Midwestern utility companies.

Quad Plus can also provide you with parts for drives, controls, and circuit breakers. Just send in your parts along with your information, and choose expedited service to minimize downtime.

Why Quad Plus?

Quad Plus is available with expert onsite services and remote support 24 hours a day, 365 days a year. Quad Plus provides much more than repair and service; we offer all the services in the system integration lifecycle to our local and global customers. Quad Plus is a trusted provider of multi-discipline professional engineering, power services, system integration, and industrial safety.

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What We Do

Whether you need expert onsite services or remote support, Quad Plus technicians are ready to help. We will send technicians directly to your location or connect over the internet via secure VPN. We can also diagnose problems remotely so our technicians can arrive on site with the correct parts and tools to complete the repair. The results are faster repairs and less downtime.

Drive Repair and Health

minimize downtime by diagnosing AC drive problems

Our team will keep your AC and DC variable speed drives (VSD), Air Compressor variable speed drives (VSD), and Wind Turbine Drives up and running while minimizing downtime. From bringing drives back up to proactive measures to prevent future problems, we can help.

Circuit Breaker Repair

repair your low voltage circuit breake

Quad Plus offers repair and service for low and medium voltage circuit breakers. We repair damaged circuit breakers, provide refurbishments, and retrofit old machines with new technology.

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Warranty Work

one year warranty on AC drives DC drives OEM Controls

We want you to have confidence in our work so we include a one-year warranty on all repairs and service.

Legacy Controls and Drives

repair legacy drives and legacy controls

When manufacturers stop supporting parts, drives, and controls, our technical team can pick up the repair and service to keep your systems running.

Drive Repair and Drive Health

diagnose and repair problems with ABB drives and Siemens controls

Quad Plus technicians are manufacturer trained. That gives us the ability to expertly diagnose issues with your drive system because of our experience with OEM manufacturers (specifically Siemens & ABB) and exclusive access to original OEM documentation, including manuals, literature, and schematics.

Once a drive repair is completed, drives are put through a load stress test to ensure it will perform safely and as required once it is back in production. Our expert repair technicians check the drive health by taking readings and performing advanced testing.

IGBT (insulated gate bipolar transistor) can degrade over time and become dangerous to operate due to the risk of explosion. Restoration must be made, especially if drives have been shut down for an extended period. Our team can perform the extensive work necessary to test IGBTs and reform bus capacitors for safe operation.

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Our Specialties

While we support many brands and products, we have special expertise in the following Siemens and ABB Product families.

siemens system integration partners
Siemens Masterdrives Repair
siemens system integration partners
Siemens Simoreg Repair
siemens system integration partners
Siemens Micromaster Repair
siemens system integration partners
Siemens Sinamics Repair
siemens system integration partners
Siemens Softstarts Repair

abb system integration partners
ACS-880 Low Voltage AC Variable Frequency Drives
ABB ACS-880 Low Voltage AC Variable Frequency Drives Repair
abb system integration partners
ACS-800 Low Voltage AC Variable Frequency Drives
ABB ACS-800 Low Voltage AC Variable Frequency Drives Repair
abb system integration partners
ACS-550 Low Voltage AC Variable Frequency Drives
ABB ACS-550 Low Voltage AC Variable Frequency Drives Repair
abb system integration partners
DCS-800 Low Voltage DC Variable Frequency Drives
ABB DCS-800 Low Voltage DC Variable Frequency Drives Repair
abb system integration partners
DCS-550 Low Voltage DC Variable Frequency Drives
ABB DCS-550 Low Voltage DC Variable Frequency Drives Repair

Legacy Controls and Drives

'legacy control repair an OEM drive services

Quad Plus can repair and support legacy controls, drives, and parts that OEM manufacturers have stopped supporting. We have a vast inventory of parts, and if we do not have one in stock or cannot acquire or repair a component, we will research direct equivalent parts and ensure compatibility. In some unique cases, we have been able to remanufacture controls and drives using the manufacturer's original specifications.

Technical Support Services

Whether you have questions that our technical support team can answer over the phone or complex issues that require expert support onsite or remotely, our goal is to provide fast repairs with the shortest downtime possible.

Technical Consulting

Are you experiencing issues with your control system, but concerned about changing settings? Our technical support team will discuss the problems and issues you are facing over the phone and via email. We can review fault codes, photos, and descriptions of the situation before sending you some recommendations and documentation to resolve the problem. We will get you back up and running by pointing you in the right direction.

Remote Support

Our experts are available to provide remote support sessions that allow us to connect to your control systems to gather information, system alarms, and fault codes. For safety reasons, we will not modify any operational parameters or control sequencing, but review the information to make recommendations. For new customers, our senior engineers will need to complete the qualification process before we can connect to your systems.

Onsite Support

Our technicians can also be dispatched to your location to provide onsite technical support. Before heading to the site, the technician will gather information and attempt to diagnose issues remotely. That way, we can ensure that a remote solution isn’t possible first, and then arrive onsite with the correct tools and parts to complete the repair. Our goal is to provide quick solutions with less downtime.

Power Services Case Studies


Our team of system integrators and process engineers have many years of experience in the industries listed below. Many of our engineers have worked in the specific industry before joining Quad Plus, so they have extensive knowledge of your industrial control systems and production lines.

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The Quad Plus team includes technicians who are OEM control manufacturer trained and also have access to an extensive library of OEM guides and schematics. Our dedicated experts have extensive experience in a variety of situations so you can count on us for all your diagnosis and repair needs. When minimizing downtime matters, we work hard to keep you up and running.

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