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Explosion proof axial flow fan BFAG/BFS industrial strong wall ventilation fan

Explosion proof axial flow fan BFAG/BFS industrial strong wall ventilation fan

1、 Explosion proof exhaust fan (applicable scope and working conditions:)

The FAG/BAFG/BFS explosion-proof exhaust fan has a reasonable, beautiful, durable, sturdy, low noise, and low energy consumption structure. It is suitable for general environments such as factories, warehouses, office buildings, canteens, kitchens, and basements for exhaust ventilation and cooling prevention. AC 50Hz, voltage 220V/380V. Suitable for explosive gas mixtures (Zone 1 and Zone 2) in Class II, Grade B, T4 group and below.

Explosion proof exhaust fan (hereinafter referred to as exhaust fan), its explosion-proof performance is made into explosion-proof type according to the provisions of GB3836.2-83 "Explosion proof Electrical Equipment for Explosive Environments - Explosion proof Electrical Equipment" d ". The explosion-proof mark is dIIBT4, suitable for Class II, Class A and B T1, T2, T3, T4, forming explosive environments with combustible gases and air. This product has the advantages of reliable explosion-proof performance, high air volume, low noise, and low power consumption. And it has passed the safety inspection of the national statutory explosion-proof inspection unit and obtained the "Explosion proof Certificate".

2、 Explosion proof exhaust fan (installation and use:)

1. Firstly, check whether the frame and fan blades are deformed, whether the fan blades rotate flexibly, and whether there is any friction phenomenon. Check whether all fasteners are complete, tightened, and have explosion-proof certificate numbers.

2. The line voltage must match the rated voltage on the motor.

3. Use a 500V megohmmeter to check the insulation resistance of the motor. If the resistance value is less than 50M Ω, the drying method or short-circuit current method should be used for drying treatment to make the insulation resistance greater than 5 M Ω.

4. Small explosion-proof switches must be used as power switches, or ordinary switches must be installed in outdoor areas without explosive hazards.

5. The outer diameter of the cable connected to the power supply should match the sealing ring. After tightening and tightening the nut, it should be ensured that there is no gap between the sealing ring and the cable, as well as between the outlets. Otherwise, the explosion-proof performance will be lost.

6. During assembly, it should be ensured that the explosion-proof clearance is less than 0.2mm. The lubricating grease for the motor bearings should be replaced with ZG-2H composite calcium based lubricant.

7. The non wiring part of the explosion-proof motor cannot be disassembled at will. When wiring, open the cover of the wiring room, insert the lead wire and connect it to the terminal. After connection, cover the cover and tighten the screws to ensure that the explosion-proof surface gap is less than 0.2mm. Then tighten the wire outlet to prevent the lead wire from moving.

Attention: During installation, pay attention to the explosion-proof surface. The explosion-proof surface must be coated with 204-1 anti rust grease during assembly. All explosion-proof surfaces must not be damaged or corroded, otherwise they will lose their explosion-proof performance. If there is any damage or corrosion, it must be repaired according to the "Regulations for Handling Defects in Explosion proof Electrical Equipment Explosion proof Surfaces".

8. The exhaust fan in use should be regularly cleaned of dust and other accumulated substances on the motor to avoid affecting heat dissipation.

9. When reusing exhaust fans that have not been used for a long time, they should be checked again according to the instructions and can only be used if they are suitable.