F.A.Q

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 air flow is in the right 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 connection:

To reverse the direction of rotation of a single-phase asynchronous motor, the position of the copper plates and wires must be changed:

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

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

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

The motor must be installed inside the enclosed pedestal with the mounting brackets facing up.

We adjust the orientation of the motor to the type of pedestal. 

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

Yes, it is necessary to use a VFD with a single phase 230V supply, this VFD will create three 230V phases generally connected in a delta configuration on the motor (refer to the fan installation manual).

Consult the nameplate and find out about your electrical installation. If you are using a 230V frequency converter, you should generally use the delta connection and if you have a 400V three-phase supply or a 400V VFD, you should generally use the star connection.

The smaller of the two voltages corresponds to a delta circuit.
Caution! For 400/690 motors the delta connection must be used with 400V.

Many parameters (diameter, type, equipment, filters, etc.) influence pressure drops, so do not 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 position of the fan can allow rainwater to enter the fan, a drain must be provided and specified when ordering. Attention must also be paid to the condensation that may occur in the ductwork.

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

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

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

• Concentrated nitric acid
• Concentrated sulphuric acid 100%
• Bromine
• Diethyl ether
• Phenol
• Triclorethylene

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

The fans are warranted against defects in material and workmanship for two years from the date of original shipment. Any unit or part found to be defective and reported within the warranty period will be replaced after a survey by SEAT VENTILATION, freight prepaid by the shipper. Wear and tear due to heat, abrasive action, chemicals, incorrect 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 will not be responsible for the cost of installation, removal, or reinstallation or for any consequential damages resulting from failure to meet the terms of any warranty

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

Check that the power cable is correctly connected to the back of the board. To access the back of the board, simply unscrew the two screws.

• Check if the yellow LED lights up when you press the Ventilation On/Off button.

• Check the electrical supply to the motor

• If you have a variable frequency drive, check its power supply and the connections of the on/off contacts.

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

• Check the direction of rotation of the motor. A SEAT fan running 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 used to control your fume hood, then redo the settings. The 0/10V signal sent to the controller is certainly too small.

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, in the same way as a switch.

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

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

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

• Make the alarm threshold settings again.
• The alarm delay may be too short. Two delays can be set using the switches on the back of the board: 15s and 30s. See the user's manual.

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

•    If it changes, check the VFD connections
•    If it does not change, check that the probe is correctly positioned on the fume hood and carry out the adjustment procedure again (see operating instructions)

• The set face speed is too low. Redo the settings using a higher speed.
• Check that the probe is correctly positioned on the fume hood and carry out the adjustment procedure again (see operating instructions)

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

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

• Check that the speed sensor is properly connected to the controller.
• Turn off and then turn on the power to the controller.
• Change probe connector (SONDE1/SONDE2)

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, in the same way as a switch.

Carry out the threshold settings (see operating instructions)

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

•    If it changes, check the VFD connections
•    If it does not change, check the correct positioning of the probe on the fume hood, check the correct operation of the linear position sensor (PTLI mode, 2V EA1) or of the position switch (2V EC2 mode) and carry out the adjustment procedure again (see operating instructions)

• Check the direction of rotation of the motor. A SEAT fan running 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 used to control your fume hood, then redo the settings. The 0/10V signal sent to the controller is certainly too small.

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

• Check that the fan is correctly sized for the installation.
• If a flow controller is controlling your fume hood, then redo the settings. The 0/10v signal sent to the controller is probably too large.

• Make the alarm threshold settings again.
• The alarm delay may be too short. The alarm delay can be set in the BUZZER DELAY menu. See the operating instructions.

In the setup menu, select the transposed speed display (Adjusd spd) and enter the speed read from the anemometer. Next, set the thresholds.

Yes, its universal design allows adaptation to a wide variety of fume hoods, whether they are being manufactured or already installed.

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

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