Axial Fan for Air Cooler

Forward Centrifugal Fan YWFF250

Production Description

Single Inlet Forward Centrifugal fans and blowers are compact units that can be used to either pressurize or evacuate in air moving applications. The impellers are permanently mounted to the external rotors for ease of installation and maintenance-free operation. These units may be mounted in any orientation to provide maximum airflow in minimum areas.

(1)YWF External Rotor Centrifugal Fans are divided into forward centrifugal fan and backward centrifugal fan according to curved blades, which have compact structure, convenient installation, credible running, little noise, energy saving and high efficiency.

(2) Several speed ranks, adapt to both frequency conversion and voltage transformation speed changing active. Our products are widely used in duct fans, roof ventilator, air purifying equipment, air conditioning, and household appliances, etc.

(3)The voltage of the single phase motor is 220V, 50/60 Hz, and the voltage of three phase motors is 380V, 50/60Hz. We can also supply other fan motors with different voltages and frequencies according to clients' requirement.

(4)The safety grade of this series is IP54, and the insulation classes are class B and class F.

(5) The applicable ambient temperature of the fan motors used in condenser is from -30℃~60℃.

(6)The average service life of motors is over 30,000 hours.

(8) Our products have gotten UL approval, CE approval and CCC approval.

(9) Product Features

① —Material: Housing: galvanized sheet steel

Impeller: galvanized sheet steel

Rotor: Coated in black plastic

② Bearings: Maintenance- free ball bearings

③ Direction of rotation: Clockwise, seen on rotor

④All models have reached UL approval, CE approval and CCC approval

⑤The type of protection is IP54. All models are fitted with an internal Thermal Overload Protection Device

⑥ Mounting position: Shaft horizontal or rotor on bottom; rotor on top on request (Any)

⑦Insulation class is class B or class F

Performance Parameters

Model	V	Frequency HZ	Current A	Input Power KW	Speed RPM	PA	Max Air Flow M³/H	Capacitor μF	Noise dB(A)	Curve
YWFF4E250	230	50	3.3	0.75	1300	0	2450	16	76	①
YWFF4D250	230△/400Y	50	3.0/1.7	0.8	1350	0	2600	/	76	②
YWFF6E250	230	50	1.6	0.29	910	0	1700	5	65	③
YWFF6D250	230△/400Y	50	0.75/1.3	0.27	900	0	1700	/	65	④

shape and the size of installation

Air volume and static pressure curve

Product feature and application

(1) Product feature:

● Compact structure

● Specialized design

● Refined process control

● Simple Installation

● High efficiency and low noise

● Long service life

(2) Application

● Condenser

● Evaporator

● Pipe fan

● Roof ventilator

● Heat dissipation and ventilation

Illustration of Models

YWF—F—2—E—250

① ② ③ ④ ⑤

①YWF: External Rotor Centrifugal Fan

②F: Forward

B: Backward

D: Double Inlet

③(2,4,6):Pole of Motor

④E: Single Phase Capacitor Operation

D: Three Phases Asynchronous Operation

⑤250: The Diameter of inlet

Company Profile

Founded in 1980, Ningbo lionball Ventilation Co., Ltd. is a key high-tech enterprise of the National Torch Program, which integrates product research and development, manufacturing and sales.Our company has passed ISO9001 quality management system certification and ISO14001 environmental management system certification.

"Lionball" brand after 40 years of precipitation, was awarded as a well-known trademark in Zhejiang Province.Our fan and motor products in the international industry has a high reputation and good reputation.Products are exported to the United States, Germany, Italy and other European and American countries as well as Brazil, Russia, other emerging industrial countries and other parts of the world.The main partners are Emerson, Panasonic and other world top 500 industry famous companies.The main products have passed the German VDE, the United States UL, Europe CE and RoHS and China CCC certification.

Lionball team

http://www.lionball.org/