PRF-EX Centrifugal Fans

Speed controllable, explosion-proof efficiency

Certified according to ATEX 2014/34/EU
Handles Aggressive Media
Flexible Use

Duct diameter(mm)

Motor poles

PRF-EX 125D4 Ex d#484446

Safety first

PRF-EX fans are designed for challenging environments where explosive atmospheres can occur. Which is why they are tested according to ATEX directive 2014/34/EU – to ensure they’ll perform as intended after installation.

Flexibility

Where dirt, corrosive gases or other problematic elements occur, fans are exposed to particular challenges. Our PRF-EX range were specially developed for such applications in the food, electronics, medical facilities and chemical industries. With the help of robust and carefully selected components, there function reliably in unfavourably conditions.

Modularity

The position of the unit’s antistatic casing, which is made from UV-resistant and watterproof PP or PE, can be easily adapted. This making the PRF suitable for various configurations.

Performance

PRF-EX could be used for temperature classes T1 to T4. Exhaust of potentially explosive gases in Zone 1 and Zone 2, as well as Groups IIA, IIB and hydrogen is also possible.

Tech specs

Features

Construction

Sintered casing made of UV-resistant PP or PE, waterproof. The casing can be easily adjusted through turning it (Standard position is LG270). The pedestal is manufactured of stainless steel, abrasion-resistant lacquered.

Impeller

The PRF-EX fans use single-flow impellers made out of PP or GFK (PRF-EX 500D4 Ex d) with effective blade geometry, dynamically balanced and paired with corresponding IEC Ex db motor.

Motor

Explosion proof motor Ex db with terminal box Ex eb on the motor.

Motor protection

Integrated PTC thermistors, to be connected to a motor protection device.

Control

Speed controllable by frequency converter.

Installation

PRF-EX fans can be stand on floor with mounted pedestal. For preventing vibration to the duct is recommended to use flexible connection.

Technical Data

Article name

PRF-EX 125D4 Ex d

Article number

#484446


Protection/Classification
Enclosure class, motor	IP66
Insulation class	F
Dimensions and weights
Duct dimension; Circular, inlet	125	mm
Weight	12	kg
Others
Duct connection type	Circular
Motor type	AC

Performance

Dimensions

PRF EX	A	B	C	D	E	F	G	H	I	J	K*	L	M	N	O	P	Q	R

125	370	156	149	125	244	274	238	536	15	20	410	121	130	248	298	420	25	130
160	460	193	183	160	290	326	280	623	30	30	472	138	150	290	340	439	25	150
180	521	219	210	180	314	350	309	663	30	30	497	156	150	314	364	474	25	150
200	583	245	235	200	334	370	342	727	30	30	552	164	155	319	384	548	25	155
250	730	311	291	250	400	430	415	844	30	30	665	189	155	400	450	641	25	155
315	747	385	363	315	424	454	510	909	30	30	720	193	150	424	474	717	25	150
400	1135	481	454	400	412	446	650	1132	30	30	840	289	150	723	803	887	40	150
500	1435	607	576	500	530	564	820	1403	30	40	1042	339	150	893	973	1054	40	150

Specification

Plastic radial fan for aggressive media. EX version. Housing made of antistatic plastic. Particularly suitable for all applications where strong corrosive gases, contaminated air or other aggressive components are present in the air. Sintered housing made of UV-resistant PE-el, waterproof. Base including motor mount made of galvanized steel. Single-flow impellers made of PP-el with high-performance blade geometry. Frequency inverter-controlled IEC standard motor in Ex db (eb) version. Terminal box in Ex eb version. Motor located outside the airflow. Integrated PTC thermistor with leads for connection to an approved Ex motor protection device. Speed controllable via frequency converter. Terminal box on the motor. Suitable for exhaust air. Available in different housing positions (standard GR360). Suitable for outdoor installation. Preferably for use in laboratories, medical facilities, as well as in the food, electrical, chemical and metal industries. Suitable for conveying potentially explosive atmospheres in Zone 1, Category 2G, and Zone 2, Category 3G. The fans are suitable for gases of Groups IIA, IIB, and hydrogen, as well as for temperature classes T1 to T4. Ignition protection type "h" - structural safety. Marking: II 2G Ex h IIB+H2 T4 Gb. Tested according to ATEX Directive 2014/34/EU.