Protective drain cap for a drain port of a swimming pool filter unit and method therefor

A method of protecting a drain port of a swimming pool filter unit, said method comprising the steps of:

• providing a protective drain cap comprising:
• a body, said body being cylindrical and including a front wall and a perimeter wall extending perpendicularly from said front wall, said front wall and said perimeter wall enclosing a receptacle in said body;
• a female threading, said female threading being positioned on an inner surface of said receptacle, said female threading being configured to matingly engage with a male threading of a drain port of a swimming pool filter unit;
• and
• at least one aperture, said at least one aperture being formed in said front wall, said at least one aperture being connected to said receptacle for drainage of water from the drain port of the swimming pool filter unit through said front wall when the swimming pool filter unit is not in use;
• turning off the swimming pool filter unit;
• and
• screwing said protective drain cap onto the drain port of the swimming pool filter unit to drain water from the drain port of the swimming pool filter unit through said front wall when the swimming pool filter unit is not in use.