Please find below the sequence or erection of a Lift..:

1. Site Survey of Lift Shaft
2. Installation of Rails
3. Installation of Door Frames
4. Installation of Outside Doors, Indicators and push buttons
5. Assembly of Cabin
6. Installation of Motor
7. Main Cable Installation, Connection to BMS if applicable.
8. Testing
9. Complete Installation of Interior Finishes
10. Balancing and Commissioning

These are the basic steps, other requirements will apply per specifications.