According to the present invention, a chemical installation is provided. The method includes regulating the power supply to a first voltage. The projections can be used to prevent objects from adhering to the top surface of the module andor to immobilize the objects during movement of a conveyor belt including the module. Multiple root directories may be provided under a common base directory for storing diagnostic data corresponding to multiple monitored systems. The present contact lenses reduce the interaction andor pressure of the contact lens, or portion thereof, with or on the conjunctiva of a lens wearer’s eye.