Chicago Pneumatic Air Filter Element for QRS3.0, QRS5.0, and QRS7.5 – 6211473750
The 6211473750 air filter element was used on the QRS3.0HP, QRS5.0HP and the QRS7.5HP rotary screw air compressors manufactured after July of 2008. This part is sometimes listed as 6211 4737 50 and 6211-4737-50.
This is an OEM part made by Chicago Pneumatic Air Compressors. This part may be shown in your parts manual as 6211473700. This filter was also commonly used on the Atlas Copco small GX series of air compressors and several Quincy compressors.
When changing the air filter, you may also need to change the oil filter, separator filter and oil.
This air filter element should be changed every 2,000 hours. This filter should be changed on a more frequent basis If your compressor is located in a dirty environment with lots of dust. Changing the air filter will prolong the life of your compressor by protecting the critical parts on the inside of the compressor. Proactively changing the air filter will also increase your energy efficiency by not restricting the inlet airflow going into the air compressor.