The ProForm 830QT was manufactured around 1999. It features a cushioned running deck, iFit technology and a 2.5 horsepower drive motor. The ramp inclines up to 11 percent, and the maximum speed is 10 mph. Like most treadmills, the 830QT has a recommended user weight limit for safety reasons.
According to the owner's manual for the ProForm 830QT treadmill, the machine should not be used by those weighing more than 250 pounds.
The reason for the weight limit involves the safety of the user and the protection of the treadmill. Users weighing more than the recommended weight limit may damage the treadmill, making it inoperable or unsafe to use.
The weight limit is a significant treadmill specification. The 830QT lists the weight limit in the "Important Precautions" section of the manual. If you ignore the weight limit and your treadmill is damaged, it may or may not be covered under the warranty. One reason ProForm lists these precautions, according to the owner's manual, is to reduce the risk of "injury to persons," indicating that exceeding the weight capacity may result in injury.
Many considerations affect the weight capacity of a treadmill. The thicker the walking deck, the more weight the treadmill can handle. A 1-inch deck is more stable than a 1/2 inch deck. Another consideration that is often overlooked is the weight of the treadmill itself. A 250-pound person may not be comfortable walking on a 135-pound treadmill. Fold-away treadmills such as the 830QT tend to be lighter to make it easier to move.
According to treadmill-ratings-reviews.com, treadmill manufacturers often overstate the weight limit by 50 to 75 pounds. The website recommends looking for a treadmill that is rated at least 50 pounds over your current weight. If you weigh 200 pounds or less, the 830QT is an appropriate and safe choice.