GRDM/04/22-23 Maintenance of Otis passenger lift Model A0019 and Schindler lift Model 166 passenger lift for a period of three years – SCM PUBLICATION. Home / Documents / Attachments GRDM/04/22-23 Maintenance of Otis passenger lift Model A0019 and Schindler lift Model 166 passenger lift for a period of three years – SCM PUBLICATION. File extension: pdf File size: 83 kB