Johnson Lifts — Lift , Job no. L- 02599 , giving problems since installation

Address:

Casa De Goa

Good day,
I hd installed JOHNSON LIFT, but since installation it has been giving problems and was also delivered with damaged cabin pannels.
The Johnson team said it is due to voltage drop. But did not provide any solution.
In my personal capacity, after doing some research and consulting with other lift vendor, got a voltage transformer /stabilizer installed. Now the voltage is maintained above 410 V, but still the lift stops working n sometimes there is a jerking sound.