Basically, the AMC means the annual maintenance contract
which lasts for a year. After the period the company must renew the contract
for more services. The commercial firm has made the budget to cover the air
conditioning repair expenses.
The technical meaning of maintenance involves functional
checks, servicing, [disambiguation needed] repairing or replacing of necessary
devices, equipment, machinery, building infrastructure, and supporting
utilities in industrial, business, governmental, and residential installations.
Over time, this has come to include multiple wordings that describe various
cost-effective practices to keep equipment operational; these activities take
place either before or after a failure.
Maintenance functions are often referred to as maintenance,
repair and overhaul (MRO), and MRO is also used for maintenance, repair and
operations. Over time, the terminology of maintenance and MRO has begun to
become standardized. The United States Department of Defense uses the following
definitions:
Any activity—such as tests, measurements, replacements,
adjustments, and repairs—intended to retain or restore a functional unit in or
to a specified state in which the unit can perform its required functions.
All action taken to retain material in a serviceable
condition or to restore it to serviceability. It includes inspections, testing,
servicing, classification as to serviceability, repair, rebuilding, and
reclamation.
All supply and repair action taken to keep a force in
condition to carry out its mission.
The routine recurring work required to keep a facility
(plant, building, structure, ground facility, utility system, or other real
property) in such condition that it may be continuously used, at its original
or designed capacity and efficiency for its intended purpose.
Maintenance is strictly connected to the utilization stage
of the product or technical system, in which the concept of maintainability
must be included. In this scenario, maintainability is considered as the
ability of an item, under stated conditions of use, to be retained in or
restored to a state in which it can perform its required functions, using
prescribed procedures and resources.