Knowing when to replace the home air filter on your Friedrich C-90 unit is simple. The activated carbon filter must be replaced when it is no longer effective in eliminating odors. The life of the carbon filter will depend on the concentration of odors and fumes in the air passing through the air purifier. Under normal operating conditions, the carbon filter should last for six months.
A properly functioning filter provides relief for allergy and asthma suffering family members, customers and employees and will ultimately reduce your cleaning and maintenance costs.
CLEANING THE CARBON FILTER Occasionally, the carbon filter will need cleaning. Use a stream of air or a vacuum to remove the dirt. THE CHEMICAL AND ODOR ABSORPTION CAPABILITIES CANNOT BE RESTORED. When the carbon filter can no longer remove odors from the air, it must be replaced. THE CARBON FILTER MUST BE IN PLACE FOR THE AIR CLEANER TO OPERATE.
How to maintain Friedrich Electrostatic Air Purifiers:
In order to keep the C-90 air purifier operating at peak efficiency, it is important to wash the electronic cell. When the electrostatic plates need cleaning, the C-90B will sound much like a bug zapper. The electronic cell can either be submerged in a bathtub or other suitable container and rinsed, or it can be washed in an automatic dishwasher. If the air is of very poor quality, the efficiency of the electrostatic cell will degrade rapidly, and may necessitate weekly cleaning.