34 Rockwell Automation Publication 750-IN100B-EN-P - July 2017
Chapter 3 Prepare for Installation
Airflow through the enclosure must not be impeded. Regular inspection and 
replacement of the filter media is required to maintain proper cooling. Refer to 
the PowerFlex 750-Series Products with TotalFORCE Control Hardware 
Service Manual, publication 750-TG100
 for filter media maintenance 
schedules.
Figure 9 - Airflow Clearances
IP54, UL Type 12IP21, UL Type 1