Explosion-Proof Exhaust Fan BFAG

Fan overview

Explosion-proof explosion-proof exhaust fan (hereinafter referred to as exhaust fan) has its explosion-proof performance in accordance with GB3836.1-8 “General Requirements for Explosion-proof Electrical Equipment for Explosive Environments” GB3836.2-83 “Explosion- proof Electrical Equipment for Explosive Environments Explosion-proof Electrical Equipment  ‘d’ “, the regulations are made into flameproof type.

The explosion-proof mark is d IIBT, which is suitable for Class 1, A, B, T1, T2, T3, T4, temperature group, explosive environment formed by combustible gas and air.

Use

This series product is reasonable structure,beautiful appearance,line firmness and durability, energy consumption.

It is applicable for the exhaust,ventilation,sunstroke prevention, cooling purposes in the common environments such as factory,warehouse office building,canteen kitchen, basement, hotel, storage room,garage,coffee shop,KTV,bar,super markets,etc.

The exhaust fan can under the following condition the reliable work:

1. The elevation does not surpass 2000m.
2. Environment temperature -20℃ ~ +40℃.
3. The relative humidity of the surrounding air is not more than 95% (at 25 ° C).
4. Zones 1 and 2 of Class II, Class B, T4 and below explosive hazardous locations.

Model meaning

Parameter

Dimension

Installation

1. First check whether the frame and fan blades are deformed, whether the fan blades rotate flexibly, and whether there is friction. 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. Check the insulation resistance of the motor with a 500V megohmmeter. If its resistance value is less than 5MQ, use drying method or short-circuit current method for drying treatment to make the insulation resistance greater than 5MQ.
4. A small explosion-proof switch must be used as the power switch, or the flexible switch must be installed in an outdoor place where there is no risk of explosion.
5. The outer diameter of the cable connected to the power supply should be consistent with the sealing ring. After tightening and pressing the nut, ensure that there is no gap between the sealing ring and the cable, and between the sealing ring and the outlet nozzle, otherwise the explosion-proof performance will be lost.
6. When assembling, ensure that the explosion-proof clearance is less than 0.2mm. Replace the grease of the motor bearing. The grease brand is ZG-2H compound 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 and tighten the screw to make the explosion-proof surface clearance less than 0.2mm, and then tighten it. The lead wire can’t move.

Note: When installing, pay attention to the explosion-proof surface. When assembling, the explosion-proof surface must be coated with 204-1 anti-rust grease. All explosion-proof surfaces must not be damaged or rusted, otherwise the explosion-proof performance will be lost. If there is damage or rust, it shall be repaired in accordance with the “Provisions for the Treatment of Explosion-Proof Surface Defects of Explosion-proof Electrical Equipment”.

8. The exhaust fan in use should be frequently cleaned of dust and other accumulations on the motor to avoid affecting heat dissipation.
9. When the exhaust fan that has not been used for a long time is re-used, it should be checked again according to the instructions, and it can be used only after being qualified.

Product images