Fluid machine system and method for controlling same

A fluid machine system comprising:

• a plurality of fluid machines;
• and
• an operation number control device capable of individually controlling start and stop of the fluid machines,
• wherein the operation number control device determines an order of operation start of the fluid machines in ascending order of total operation time of each fluid machine,
• sets a continuous operation time for each of the fluid machines based on total operation times of each of the fluid machines such that the continuous operation time of one of the plurality of fluid machines having a first total operation time is longer than the continuous operation time of another of the plurality of fluid machines having a second total operation time that is longer than the first total operation time,
• starts the operation of each of the plurality of fluid machines until a preset value is reached in accordance with the determined order of operation start of each fluid machine;
• and
• when there is a fluid machine for which the continuous operation time set for the fluid machine has elapsed among fluid machines in operation and there is a fluid machine at stop, the operation number control device causes the fluid machine at stop to start and causes the fluid machine for which the continuous operation time has elapsed to stop.