The person responsible for maintenance at an office building describes problems with one of the lifts. A lift has been out of service for over a week, as its five-year warranty has just expired. A technician visited and said the main drive motor is broken, with a three-week wait for a replacement part. The other two lifts can still be used, but there are waits during busy times. The broken lift is due for an overhaul in two years, and the control interface may be upgraded at that time.