1.Product instruction 1.1 Summary NQB1, NQB2 standard type of quarter-turn electric valve actuators and NQB1.IN, NQB2.IN integral type of quarter-turn electric valve actuators (hereinafter referred to as “Electric actuator”) are the two models with small torque value in NQB detached series. This series is developed from QB1, QB2.
1.4.2 Reducer: NQB1 and NQB1.IN applies one stage spur gear pair and two stages worm gear pair. For NQB2 and NQB2.IN, NGW planetary reducer is added to the lower part of NQB1 and NQB1.IN. The range of output speed of the above products is wide and the output shaft has a good self-locking function.
axis of output shaft is vertical with the floor. 2.1.2 Side: the central axis of output shaft is parallel to the floor. It is much better if axis of motor is parallel to the floor at that time. 2.2 The connection between electric actuator with the valve 2.2.1 Take the spline joint out of the driving shaft and get it properly connected with valve (if no requirement of the dimension of the inner hole and key is made while placing order, processing shall be made by user).
be kept in dry environment if it cannot be mounted immediately. Don’t remove the sealing plug before finishing connecting the wire so as to prevent the sealing performance from being damaged. 2. The internal grounding and external grounding of the electric actuator shall be fastened and reliable.
cam; rotate the cam in the direction of opening the valve to make it touch with the roller and contact of the corresponding INCH switch, when a “click” sound from the action of the micro switch is heard, the screw on the cam can be tightened properly (the procedures below are same as these in 4.1.4, pay attention to the different attention).
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actuator(hereinafter referred to as NQBEx Explosion-proof Electric Actuator ) have been tested, experimented and finally verified by the national verified explosion-proof organization and get Conformity Certificate of Explosion-Proof. The explosion-proof grade of NQBEx explosion-proof type is Ex d II B T4. The meaning of the alphabet and number in this explosion-proof sign: “Ex”...
5.4 Notes for electric wiring Lug plate shall be applied for wiring. Screw M4 is used for power cable; screw M3 is used for control cables. Wires shall not be loosened or exposed to outside. Bend all the plastic protection jackets of the lug plate in the same direction to ensure a proper creep age distance and leakage distance.
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▲ Introduce the operation condition in brief. ▲ The controller should be specified separately when placing an order. TIANJIN BAILI ERTONG MACHINERY CO., LTD. Address: Block B,No.180 Hanghai Road, Tianjin Pilot Free Trade Zone (Airport Economic Zone) Tel: 86 22 26750313 84911866...
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