THE MOST COMMON TYPES OF FAN MOTOR ENCLOSURES
OK, 80’s rock ballad reference aside, selecting the proper motor type for your industrial environment is vitally important – ensuring years of high performance and reliability from your Patterson fan. Each type is specifically designed to protect the motor’s mechanical and electrical parts to varying degrees. Not sure which one to choose? Take a look at the descriptions below:
Open Drip Proof (ODP) – Prevents liquid from dripping into the motor within a 15° angle from vertical, but still allows air to circulate through the windings. Clean, dry locations are ideal for a motor with an ODP enclosure.
Totally Enclosed Fan Cooled (TEFC) – Possibly the most common and versatile of all enclosure types. A small fan attached to the shaft on the back of the motor creates airflow to aid in the cooling process. Keep in mind that although these motors are “totally enclosed,” they are not air tight.
Totally Enclosed Air Over (TEAO) – This motor has no internal or external mechanism to facilitate cooling. Therefore, it must be mounted in the path of the manufactured fan’s airflow. Many belt driven fans employ this motor type.
Wash Down or Totally Enclosed Wash Down (TEWD) – These enclosures can withstand a high-pressure wash down, and are a necessity for wet or chemical environments. Common uses include food processing, packing, and pharmaceuticals. Be aware that they are not for use in hazardous locations.
Explosion Proof (EXPL) – Essential in many hazardous industries like chemical, oil and gas, and wood processing. A motor given this designation does not mean that it can withstand an exterior explosion. Rather, they prevent an internal spark (or explosion) from igniting a much larger blast outside the housing.
Have questions? Still unsure of your choice? Give Patterson a call! Our knowledgeable sales staff is ready to discuss your application and provide the best possible air movement solution!