Specifications include, but are not limited to: Hydraulic Passenger Elevators: Frequency of Inspections: Semi-monthly Each inspection to be signed for by the Owners Representative. 1. Specific Equipment Performance Standards: a). Call-back: Nominally 4 to possibly 6 per year, excluding nuisance calls. 2. Minimum expected periodic servicing, checking, oiling, and adjustments: a). Every two weeks: ride the car, observing operation, adjust in tank with car at top. b). Every 13 weeks: Check adjustment of car doors and door operator, adjust if needed, check landing switches, check guide lubricators and lubricate. c). Every 26 weeks: Clean and examine Saf-T-Edge, door guides and fastenings. d). Every 52 weeks: Clean, oil and adjust all hoistway doors, check all control switches, car and corridor stations.