Check the direction of rotation of the motor; it must rotate in the direction of the arrow on the volute. When the motor rotates in the opposite direction, the airflow circulates in the correct direction but with a very low flow rate.

To reverse the direction of rotation of a three-phase asynchronous motor, simply reverse 2 wires on the motor power supply:

To reverse the direction of rotation of a single-phase asynchronous motor, you must change the position of the terminals and the power supply wires:

To reverse the direction of rotation of a single-phase EC motor, you must act on the direction selection input (brown wire):

• Connected to +12V => LG
• Not connected => RD

No, the turbines are different depending on the position (LG or RD), an inversion of the turbine or volute will have a very strong impact on the flow rate obtained.

The motor must be installed inside the chair with the mounting legs facing upwards.

We adjust the motor orientation depending on the type of chair.

Check the motor rotation direction. This fan is only available in LG position.

Yes, you must use a frequency inverter with a single-phase 230V power supply. This inverter will create three 230V phases, generally connected in a delta connection to the motor (refer to the fan installation instructions).

Check the motor rating plate and find out about your electrical installation. If you are using a 230V frequency inverter, you should generally use a delta connection, and if you have a 400V three-phase power supply or a 400V inverter, you should generally use a star connection.

The lower of the two voltages corresponds to a triangle connection.
Caution! For 400/690 motors, use the delta connection with 400V.

Many parameters (diameter, type, equipment, filters, etc.) affect pressure losses; don't hesitate to contact us to define the characteristics of your installation together. SEAT VENTILATION also provides training for you and your teams.

The volute must not fill with liquid. If the fan position allows rainwater to enter the fan, a drain must be provided and this must be specified when ordering. Attention must also be paid to condensation that may occur in the pipe.

The fans can be used between -15°C and +60°C.

Here is a non-exhaustive list of products compatible with SEAT fans at 20°C:

Here is a non-exhaustive list of products NOT compatible with SEAT fans:

• Concentrated nitric acid
• 100% concentrated sulfuric acid
• Bromine
• Diethyl ether
• Phenol
• Trichloroethylene

Do not hesitate to contact us for any other products, compatibility also depends on the temperature and concentration of the product.

Fans are warranted against defects in material and workmanship for two years from the original shipment date. Any unit or part found defective and reported within the warranty period will be replaced after inspection by SEAT VENTILATION, transportation prepaid by the sender. Deterioration due to wear caused by heat, abrasive action, chemicals, improper installation or use, or lack of normal maintenance are not defects and are not covered by the warranty. Transportation to and from the factory for warranty repairs is not covered by the warranty and is the sole responsibility of the equipment owner.
The manufacturer shall not be liable for any installation, removal or reinstallation costs or any consequential damages resulting from failure to comply with the terms of any warranty.

You can use our ZEPHYR online selection tool to help you choose your fan at: www.seat-selection.com

Check that the power cable is properly connected to the back of the card. To access the back of the card, simply unscrew the two Phillips screws.

• Check if the yellow LED lights up when you press the Ventilation On/Off button.
• Check the power supply to the motor.
• If you have a frequency converter, check its power supply and the connections of the on/off contacts.

• Check that the speed probe is correctly connected to the controller by accessing the back of the board.
• Turn off and then turn on the power to the controller.

• Check the motor rotation direction. A SEAT fan rotating in the wrong direction will only draw 20% of its capacity. Reversing the volute (LG <->RD) has the same effect.
• Check that the fan is correctly sized for the installation.
• If a flow controller is controlling your fume hood, then re-adjust the settings. The 0/10V signal sent to the controller is likely too weak.

The controller does not provide power; it provides a normally open contact. The light must still be connected to the power supply through the relay, just like a switch.

• Check that the fan is correctly sized for the installation.
• If a flow controller is controlling your fume hood, then re-adjust the settings. The 0/10V signal sent to the controller is likely too high.

You are in test mode. See the user manual to exit this mode.

You are in settings mode. Consult the user manual to exit this mode.

• Perform the alarm threshold settings again.
• The alarm trigger delay may be too short. Two trigger delays are adjustable using the switches on the back of the card: 15s and 30s. Refer to the user manual.

Check with a voltmeter if the 0/10v output varies:

• If it evolves, check the variator connections
• If it does not change, check that the probe is correctly positioned on the fume cupboard and carry out the adjustment procedure again (see instructions for use)

• The set face speed is too low. Readjust using a higher speed.
• check that the probe is correctly positioned on the fume cupboard and carry out the adjustment procedure again (see instructions for use)

• Check if the power cable is correctly connected (230V).
• Check that the HMI is properly connected to the CPU.

• Check if the yellow LED lights up when you press the Ventilation On/Off button.
• Check the motor power supply
• If you have a frequency converter, check its power supply and the connections of the on/off contacts.

• Check that the speed sensor is correctly connected to the controller.
• Turn off and then turn on the power to the controller.
• Change probe connector (PROBE1/PROBE2)

The controller does not provide power; it provides a normally open contact. The light must still be connected to the power supply through the relay, just like a switch.

Make the threshold settings (see user instructions)

Check with a voltmeter if the 0/10v output (SA1 or SA2) varies:

• If it evolves, check the variator connections
• If it does not change, check that the probe is correctly positioned on the fume cupboard, check that the linear position sensor (PTLI mode, 2V EA1) or the position switch (2V EC2 mode) is working correctly and carry out the adjustment procedure again (see instructions for use)

• Check the motor rotation direction. A SEAT fan rotating in the wrong direction will only draw 20% of its capacity. Reversing the volute (LG <->RD) has the same effect.
• Check that the fan is correctly sized for the installation.
• If a flow controller is controlling your fume hood, then re-adjust the settings. The 0/10V signal sent to the controller is likely too weak.

Indicates a guillotine overhang (window too high). This height can be changed in the threshold settings.

• Check that the fan is correctly sized for the installation.
• If a flow controller is controlling your fume hood, then re-adjust the settings. The 0/10V signal sent to the controller is likely too high.

• Perform the alarm threshold settings again.
• The alarm delay may be too short. The delay can be adjusted in the TEMPO BUZ menu. Refer to the user manual.

In the settings menu, select the transposed speed display (V.transp) and enter the speed read on the anemometer. Then, adjust the thresholds.

Yes, its universal design allows it to be adapted to a wide variety of fume hoods, whether they are in production or already installed.

It focuses solely on the working area of ​​the fume cupboard, thus avoiding untimely detections (passage of a fume cupboard laboratory technician, for example) and guaranteeing optimal safety (stopping in the event of the sudden presence of an object in the path of the glass).

No, Ecoglass, a system without mechanical energy input, is designed to be a reliable and durable solution, without frequent maintenance or replacement costs.