Effective Fume & Over Spray Protection for Spray Booths

Selecting the correct industrial fan that can deliver a precise airflow and a consistent pressure is vital for ensuring the removal of fumes and overspray in spray booths, and provides an adequate change in makeup air.

Airflow in paint booths must be even and compatible with the desired conditions, therefore selecting the correct impeller or industrial fan will ensure that the fan unit can work within the spray booth to provide the optimal air condition to positively affect productivity. Spray booths are engineered to move air at the appropriate rate while maintaining a clean painting environment. Airflow styles within spray booths vary according to the desired outcome of the spray but typically the most common types are: cross-draught, semi-downdraught and downdraught. Spray booth manufacturers should work with a fan supplier that can select the right impeller to match the system requirements of each of these airflow styles.

Sourcing fans with motors for spray booth ventilation can make plant assembly a little more cumbersome. This can lead to delays in production as engineers have to find a work around a fan and motor module to ensure it fits, quite often this can lead to unbalanced impellers and a lack of performance. Choosing to source a correctly sized impeller for a spray booth application based on its own advantageous qualities, is the preferred route for the largest players in the paint booth market and one that smaller independent paint booth manufacturers are looking to replicate. With this method, the manufacturer supplies their own motor that is located outside of the airstream for additional safety. Generally, manufacturers often have their own preferred suppliers for their motors, so this works out as the perfect solution for both parties.

When we supply the impeller only, in line with major manufacturer preferences, we advise our clients to use the LRHF range of aluminium impellers along with matching inlet rings from our manufacturing partner, Rosenberg. The LRHF range, also referred to as the R63 range of impellers are manufactured from a lightweight aluminium material ensuring they are much easier to transport and install than steel alternatives. Our team can advise on the motor and shaft size that are suitable for the impeller we chose, ensuring that it meets your operating point of X airflow @ X pressure, so the unit performs accurately. Taper lock bushes are also supplied according to the shaft size. Where ATEX motors are required, the onus is on the manufacturer to determine the zone that the unit will be operating in and take responsibility for the appropriateness of the motor they select. Usually motors are 400V, 3 phase with inverter control. Where required this can be supplied with an inverter drive that is suitable for the chosen motor.

We help spray booth manufacturers precisely match the size of the motor and fan performance for each paint booth so that each fan operates at dBa levels within specified levels.