Fig 2.: Values obtained from different market studies: Alimarket
S.A and DBK Informa
To calculate the profitability of a maintenance contract, the costs of
preventive maintenance and the costs of possible corrective maintenance
must be analyzed. The best corrective maintenance is the one that is not
done.
Figure 3 shows how the Gross Margin (GM) and the profit before interest,
amortization, and depreciation (EBITDA) of each maintenance contract are
calculated, which is the sum of the GM and EBITDA of each elevator. In
the aforementioned figure an example is specified, based on the average
market cost values of a local or regional company, which are lower
than the average cost values of a multinational. Depending on each
company and its market prices and operating costs, GM and EBITDA may
vary.
Where Direct cost of sales is direct labor cost, which represents the
salary, training, and social security cost of each maintenance
Technician who intervenes in the service operation that must not exceed
a certain maintenance time, which the average is approximately 60
minutes per each elevator. Where the tool cost is the prorate of the
depreciation of each tool used for the operation, where the transport
cost is the time the Technician travels to the location of the
installation, including non-desirable times, and where the cost
Corrective maintenance is the cost of any action that does not
correspond to preventive maintenance.