Maintenance tasks required to be performed by the Elevator Contractor include but are not limited to the following. These tasks are to be performed at appropriate frequencies to ensure safe and reliable elevator operation. (1) Ride each car, check operation of car and hatch doors, acceleration, deceleration, floor stops, and brake action. Make corrections as necessary. (2) Inspect all motors, machines, and generators. (3) Inspect controllers, selectors, selector drives and governors. (4) Inspect working parts of all governors for free operation. Clean and lubricate as necessary. Check contacts, shaft, bushings and rubbing surfaces for cleanliness and wear. (5) Clean and adjust all controllers and selector contacts. Renew worn contacts and/or shunts, where necessary. Check sequence of operation. (6) Inspect and clean all generator brushes and brush holders. Renew or reset brushes, if necessary. (7) Clean and lubricate direction and accelerating switches. (8) Inspect brake operation. Check shoes to brake pulley clearance and adjust as required for proper operation. Clean pulley if necessary...
