Fast, Reliable Industrial Drive Repair in Joliet IL

Cost-effective alternatives to drive replacement. Expedited services that guarantee drive repairs in 2 to 3 business days.
When you need an accurate diagnosis and fast, reliable repairs, you need the experts at Quad Plus. We have decades of industry experience, including legacy equipment, and access to resources that give us the advantage when troubleshooting VFDs.
One Stop for Industrial Repairs & System Integration
Our technicians are OEM trained and available 365 days a year for more than drive repair. When you need a trusted partner for industrial safety, system integration, power services, and professional engineering, contact the pros at Quad Plus.

Quad Plus Drive Repair Address:
1919 Cherry Hill Rd
Joliet, IL 60433
Phone (US and International)
Toll Free: (800) 292-1220
Contact Us
We provide maintenance on equipment from most manufacturers, including:





Team Certifications
- Licensed Professional Engineers on Staff
- Siemens Solution Provider Automation and Drives
- Rockwell System Integrator
- Rockwell Solution Provider Automation and Drives
- Siemens System Integrator
- Siemens Certified Safety Professionals
- Control Techniques, USA National System Integrator
- MSP (Managed Service Provider)
- ABB Value Provider
- Wonderware Archestra Certified
- Inductive (Ignition) Automation Certified Integrator
- TUV Rheinland Certified Safety
- TUV SUD Certified Safety

Frequently Asked Questions
Yes, we offer both remote and phone-based technical support to help you troubleshoot VFD issues. Contact us for assistance.
Yes. We stock a wide range of legacy VFD parts and components. Contact us to check availability.
Contact us to request an RGA number. Once we receive your unit, we’ll assess the issue and provide a quote. Some models are eligible for flat-rate repair; others will be quoted after inspection.
To begin the evaluation process, contact us to request an RGA number. Once received, ship your drive to our Joliet Drive Repair Center with the RGA noted. Evaluations may lead to a flat-rate quote or a post-assessment quote, depending on the issue.
Yes. To ship your VFD, contact us to request an RGA (Return Goods Authorization) number. Be sure to include this number on the unit when shipping it to our Joliet Drive Repair Center. Some repairs may be quoted upfront, while others require evaluation.
Yes, we accept credit card payments. Please note that a 4% convenience fee applies.
Check all power and signal connections and try restarting the drive. If the problem persists, contact us for support. We’ll help troubleshoot remotely or recommend next steps for repair.
Yes. We provide remote support via phone and email, including fault code analysis and system review. In many cases, we can help you resolve the issue without sending in your drive.
Most standard VFD repairs are completed within 10 business days. Expedited service is also available if a faster turnaround is needed.
Yes. We offer emergency and expedited VFD repair services to help minimize downtime when your systems fail unexpectedly.
We repair Siemens, ABB, WEG, Control Techniques, and many other major VFD brands. We’re also an authorized repair center for Siemens, WEG, and NIDEC/Control Techniques and a Drive Authorized Service Contractor (DASC) for ABB.
We provide expert-level VFD repair and maintenance, including component-level diagnostics, parts replacement, and full load testing to confirm repairs. We offer both in-house and onsite services, along with remote technical support and customized preventive maintenance programs.

