3 Hygiene
Hygiene |10 2588705_A_EN_1811_UB_IOM UB
3.1 Important Notes on Hygiene
Observe the local health and safety executive's technical guidance on the control of Legionella in water
systems.
The user is responsible to ensure that the water system complies with local regulations, bylaws, and
guidelines (such as the HSE ACoP L8, VDI 6022, ISO 22000, HACCP, or equivalent). If inadequately
maintained, water systems, of which any humidifier is a part, can support the growth of microorganisms,
including the bacterium responsible for Legionnaires' disease.
Any risks or hazards relating to the system, including during installation and maintenance, should be
identified by a competent health and safety representative who is responsible for introducing effective
control measures.
3.2 Hygiene Risk Management
Cold water humidification presents the risk of spreading pathogenic microorganisms into the air. The
Ultrasonic Humidifier and Ultrasonic Blower Pack distribute tiny water droplets (mist) that are blown into
the space before being absorbed into the air. If the mist was contaminated before leaving the unit and
then evaporates, these contaminants are deposited onto surfaces in the space, or are otherwise
inhaled or redistributed into the ventilation system.
Pathogens include, and are not limited to, Legionella, E. coli, and viruses, and may originate from con-
taminated water, air, and equipment.
Regular cleaning and disinfecting is required to reduce health risks. Refer to "Hygiene Risk Man-
agement" above for more information on managing hygiene hazards.
Follow all safety precautions and local regulations. Refer to "For Your Safety" on page8.
There are multiple points in the humidification system where a contamination can occur. It is the
responsibility of the customer and of Condair to ensure that health hazards due to contamination are
reduced to acceptable levels. The use of a hygiene risk assessor is recommended.
Regularly clean and maintain the humidifier and its components, and do NOT miss or ignore the warn-
ings in this manual and service messages displayed on the humidifier.
Supply Air and Water
Pathogens can originate from the water supply, such as a tank or water line. It is important that standing
water in the tank or in the water line is flushed frequently to prevent the buildup of contaminants, and
the water is filtered and treated.
Pathogens may also enter the humidification system through the ventilation system or from within the
humidifier space. A fan blows air out of the water reservoir into flexible tubes, and further into a blower
pack and into the atmosphere. Contaminated air can join the mist, so it is recommended to use air filters
in the ventilation system, in the humidifier, and in the Ultrasonic Blower Pack. Ensure to use the sup-
plied air filters at all times and replace them regularly (as recommended in the Ultrasonic Humidifier
Maintenance and Operation Manual).
3.2.1 Guidelines to Keep a Clean System and Prevent Micro-organism Growth
lPerform a risk assessment of the water system using a competent person, and implement an
appropriate monitoring and control program.
lConnect a RO system to a clean, potable main water supply.
lEnsure that the system is cleaned and/or flushed regularly.
lEnsure that the buffer tank is clean and sterile before use.
lEnter a service contract that suits the needs of the company.
lStop the system if polluted drinking water is found in the area.
