Abstract: A pool cover driving system for rolling up and unrolling a pool cover encased in a protective sealed case but easily attached and detached from a power controller without breaking the seal. A method of installing the pool cover driving system wherein pool cover driving system remains in a sealed state throughout installation process. A method of replacing the pool cover driving system wherein multiple pool cover driving systems each remain in a sealed state throughout process of removal of one pool cover driving system and replacement with another pool cover driving system. A method of operating the pool cover driving system where, in addition to connection to an electrical power controller, electrical input to pool cover driving system is controlled. A method of assembling the pool cover driving system wherein potting compound provides a sealed case by substantially occupying all of interior of case besides electrical motor.