Nelson Systems, Inc. 430 W. Jefferson St. Springfield, IL  62702 Driving Directions (Powered by Google Maps) Phone (for all sales, service, and support requests) (217) 793-1042 (800) 851-3348 Fax (217) 793-1582 E-mail Non-urgent support requests: Support@nelsonsystems.com Sales requests: Sales@nelsonsystems.com Depot repairs may be mailed to the address above. Click here to download Depot Repair Request Form.