Hi Frankie,

We do not have hydraulics on our ETVs. The raising/lowering of platforms is by wire rope (electrical motor turning a wire-rope drum).

The failure was due to the DC motor being unable to provide sufficient torque to hold the wire rope drum. Main cause was the worn commutator brushes and faulty speed drive.

So, someone suggested that the use of AC motor would eliminate this. I just needed some confirmation that this is true before embarking on a major exercise to replace all our hoisting motors.