I'm trying to repair a Cheney Handi Lift 2 for free for a local church. It is a 110vac single phase 3 station unit. I've repaired all of the peripheral wiring and interlocks - so that now the up or down relay is activated correctly by the station call and lift buttons, and safety switches defeat them as required. I do have a schematic for all of the peripheral wiring but not the internals of the control box and motor connections.
Despite this, the electric brake and motor do not activate in either up or down mode. The screw and mechanical aspects of this lift are in excellent condition - if I manually release the brake the platform gently glides downward.
The motor is a 1/2 hp Baldor 56C frame(but apparently custom) with the following spec: 34-4487-466 That spec shows up on the Baldor site but their link to the wiring diagram is not working, but it does show the same info as the NEMA plate on the motor. I did send in a query to them but so far no response.
I'm assuming (without any schematic) that somehow the electric brake and motor are in series - so that if one fails the other will not work. Getting to the inside of the control box is a bit of a challenge but can be done - I was trying to avoid this if possible.
Any suggestions or help on the motor or wiring would be appreciated. And my schematic might be helpful to muggzy65 as my wheelchair lift is from the same time period - late 80's.
