Ventilation and protection grid for fan module

A fan module, comprising:

• a fan cover including an opening;
• a fixed grid coupled to the fan cover;
• a fan assembly positioned between the fan cover and the fixed grid;
• at least one movable grid coupled to the fixed grid, the at least one movable grid being configured to move between an open position in which air flows through the fixed grid and the at least one movable grid and a closed position in which air flow is blocked by the fixed grid and the at least one movable grid;
• and
• a switch, the at least one movable grid is configured to release the switch when moved to the closed position,
• wherein the switch, when released by the at least one movable grid, is configured to deenergize a power module on which the fan module is secured.

A method of replacing a fan assembly of a fan module of the type having a fan cover, a fixed grid coupled to the fan cover, a fan assembly positioned between the fan cover and the fixed grid, and at least one movable grid configured to move between an open position in which air flows through the fixed grid and the at least one movable grid and a closed position in which air flow is blocked by the fixed grid and the at least one movable grid, the method comprising:

• moving the at least one movable grid from the open position to the closed position;
• releasing a switch with the at least one movable grid, the at least one movable grid being configured to release the switch when moved to the closed position,
• wherein the switch, when released by the at least one movable grid, is configured to deenergize a power module on which the fan module is secured;
• and
• removing the front cover to access the fan assembly for replacement.