As per the Australian legislation it is mandatory to follow strict requirements on electrical safety in the workplace. One important requirement to be aware of, is the need to ensure your air purification equipment is electrically tested and tagged in compliance with your states local legislation.
If you have odour control systems in your building, do not make the assumption that your supplier is meeting their legal obligations in this area! Every week we see companies which install leased/rented equipment and fail to ensure the equipment is tested & tagged as required. We have even seen machines that have been installed for almost a decade and the supplier has never tested & tagged the equipment.