What are the causes of elevated body temperatures in explosion-proof centrifugal fans?

What are the causes of elevated body temperatures in explosion-proof centrifugal fans?

Explosion-proof centrifugal fans come in many specifications and have a wide range of applications, capable of meeting various requirements for usage scenarios, airflow, pressure, and noise levels. Typically, explosion-proof centrifugal fans operate at room temperature and may generate heat, but this remains within the normal range. This is due to friction-induced heat in various parts of the machine, causing the temperature to rise, though it does not become excessively high. This is normal. So, what are the reasons why the temperature of an explosion-proof centrifugal fan unit exceeds normal levels? 1.1. The motor may run under overload due to excessive system resistance or improper fan selection. This is caused by excessive resistance in the ductwork network or valves in the ductwork not being fully open. 2.2. Motor phase shift or wiring errors 3.3. Damaged motor bearings, with clearance that is too small and does not meet requirements 4.4. Low power supply voltage What precautions should be taken when installing and using ceiling dampers? 1.1. Place a 5mm layer of rubber sheeting between the base of the explosion-proof centrifugal fan and the foundation to reduce vibration. Spring washers must be installed to prevent loosening during operation. 2.2. The installation base must be higher than the roof; the surface must be level to prevent water leakage. Anchor bolts must be embedded in advance. 3.3. Connect the explosion-proof centrifugal fan to the air duct using a flexible hose (made of soft, non-flammable material) that is at least 200 mm long. The duct diameter must match the inlet and outlet dimensions of the roof-mounted explosion-proof centrifugal fan. To prevent deformation of the hose during system operation, ensure proper installation. The flexible hose installed on the suction end of the airtight roof regulator may be fitted slightly tighter to prevent the regulator from being sucked in. Operation: Reduce the cross-sectional area of the canvas hose. 4.4. The diameter of the explosion-proof centrifugal fan’s outlet must only be increased, not reduced. The exhaust port requires an insect screen, and a wind deflector must be added on the upwind side. During snowy or sub-freezing winter conditions, the fan must be started frequently to prevent heavy snow from blocking the exhaust port of the explosion-proof centrifugal fan.