Don’t be tempted to vacuum broken glass that’s combined with spilt drink or other fluids.. Large Pieces of Glass Can Damage Your Vacuum.

Numatic sells MicroFresh filters in two sizes: 11″ and 12″.It’s important to choose the right size for your vacuum, as the wrong size filter won’t be compatible..

Check the label on the vacuum to find the model number.On Henry, Harry or Hetty, this is located under the handle.For Charles, George or James, you’ll find the model number on the rear of the vacuum..

If the model number contains.370. , then you need the 12″ MicroFresh filter kit..

If the model number contains.

160. , then you’ll need the 11″ MicroFresh filter kit.. It’s worth noting that the MicroFresh filter is not suitable for the Henry Allergy.When the vacuum is clogged, bag is full, or the filters are covered in dirt, the suction is greatly reduced..

The first vacuums had a simple bagged design.A brush at the front of the machine agitated dirt, before a small motor sucked both the air and debris into a bag.

As the bag wasn’t completely sealed, air could pass through the walls, which meant that the bag acted as a filter.. A key point is that all the airflow passes through the bag.There is little resistance when the bag is empty, but as it fills up the.