Proper Repairs on Lifts

Proper Repairs with Equivalent Replacement Parts
Aerial lift standards require all repairs to be made by a qualified person using equivalent replacement parts. Substitution of parts results in a potential for accidents. An example case involves the replacement of a vertical lift’s motor controller relay, which is similar to the starter relay found on older model cars. Assuming all starter relays are alike, the maintenance department substituted the lift’s starter relay with one from an auto parts store. The replacement part was not configured like the original even though it “looked the same.”

As a result, when the operator pressed the “up” button, the lift rose but would not stop when the “up” button was released. It pinned the operator against the ceiling until the lift’s battery cables were disconnected.