Specifications include, but are not limited to: 1. Proactive full preventive maintenance services shall be provided on all elevators as specified in Attachment A-1 (Equipment List) and Attachment A-2 (Maintenance Tasks) of this Agreement to facilitate, preserve, and maintain safe, consistent, and reliable operation and maximum operational performance, maximum beneficial usage, and maximum life cycle. 2. The services shall include all work and materials expressly required under this Agreement or reasonably inferred, whether or not expressly stated herein, including, but not limited to the following: a. Hoist machines, including worms, gears, thrust bearings, drive sheaves, drive sheave shafts and shaft bearings, tachometers, brake assemblies and pulleys, and all other components and parts of the machine and brake. b. Hoist motors and power conversion devices, including motor windings, field coils, rotating elements (including armatures and commutators), brushes, brush holders, motor bearings, and all other related components and parts. c. Controllers, selectors and dispatching equipment, including all micro-processor and/or solid state components, relays, resistors, capacitors, condensers, transformers, contacts, leads, dashpots, timing devices, computer devices, encoders, tach generators, steel selector tapes (or cables), mechanical and electrical driving equipment, and all other related components and parts. d. Governors, including governor sheave shaft assemblies, bearings, contacts, governors' jaws, and all other related components or parts.