Refers to a part of preventive maintenance and repairs in the places specified in the definition of employment, which is subject to change or adjust the elements, able to work as normal.
Means that part of the service, maintenance and repair of the places specified in the terms of employment. This may be a spare change or improve various elements to function as normal.
Mean, part of the service maintenance and repair in the place specified in the requirements of employers. Which may be a spare change or improve the various elements to be able to work as usual.