Prodmax AIR EXPERT 400H/600H 1xM5 Filter (Pollen)

General recommendations:

• Filter contamination is monitored by the timer in the control device. Filter change alerts are shown in the control panel or the mobile application. 
• Filter change indication works as a reminder. AHU will operate despite this warning. 
• The replacement period depends on outdoor air contamination. You might be needed to replace filters up to 1.5-2 times more frequently, if you live near intense traffic roads, paved roads, construction sites, industrial areas, working fields, etc. 
• Most manufacturers recommend changing filters at least twice a year: before and after the heating season. 
• Recommended replacement terms: activated carbon filters: up to 3 months, F7 filter - 4-6 months, M5, G4 filters - 5-8 months. Energy-efficient filters last 1.3-2 times longer. F7, F8, and F9 filter servicing terms can be prolonged up to 2-3 months if an additional G4 class prefilter is being used in the ventilation system. 
• The extracted air filter can be changed less frequently, if you are using efficient F7, F8, F9, or activated carbon filters for outdoor air filtration.  
• Panel/pocket filters are single-use only. Vacuuming or cleaning will not provide the desired effect, only can damage the filter. Efficient filtering material captures small particles inside and it clogs the filter. 
• Wire-framed filters and filtering materials can be vacuumed up to 3 times before replacement if the user manual allows it.
• Keep the flanges of your new ventilation unit covered before its first launch, in order to avoid quick filter contamination. 

Universal instruction

• Always check the user manual if changing filters for the first time. 
• Before proceeding turn off the ventilation unit and wait until the fan stops rotating completely.
• Remove the front cover or filter cover.
• Remove old filters.
• Clean the unit with a vacuum cleaner and clean filter holders with wet wipes.
• It is recommended to check other AHU components also: rotor belt, heat exchanger, fan impellers, etc. And clean if necessary.
• Check the airflow direction before placing the new filters. Filters have airflow arrows on the labels they must match airflow direction. Usually, filters are installed before the heat exchanger, so arrows must point toward the center. However, if 3 filters are used there might be exceptions: if F7 or F8 filter is on the opposite side of the heat exchanger from that G4 filter, the airflow must point away from the heat exchanger. Most manufacturers placed arrows on the ventilation unit in order to install filters correctly. If filters are installed in the opposite direction, pressure resistance may increase up to 15%.
• If you have filters of different efficiencies, e.g. F7 and G4. F7 filters must be installed on the Outdoor air side, and G4 on the Extract air side. The manufacturer marks them nearby duct connection flanges. Usually, the outdoor air duct is insulated and the extract air duct is not. Also, you may check the user manual, but pay attention, that it might be the right and left versions on the unit.
• After installing new clean filters put the cover back. Then turn the device on.
• Also, you will need to restart the filter timer on the control device according to user manual instructions.

Do not operate the air handling unit without filters, it will clog your heat exchanger and contaminate the ventilation system. Also, your warranty will be void.

Contaminated filters provide higher airflow resistance, and it lead to lower airflow volumes, higher energy consumption, and higher sound emissions. Change them on time and the ventilation unit will operate longer.