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7 . H y g i e n i c i n s t r u c t i o n s f o r t h e a p p l i a n c e a s p e r V D I 6 0 2 2

7.1 General instructions

Basic hygiene-related requirements are contained in charter 5.2.
The appliance has been manufactured in a hygienic design that complies with all requirements of the VDI 6022 standard for the
hygiene of HVAC device. In order to meet those requirements during operation it is essential to ensure for the appliance to
be operated, maintained, inspected and cleaned by sufficiently qualified personnel in accordance with instructions contained in
the operation and maintenance manual. It is also essential to ensure for the remaining components of the HVAC system
(HVAC distribution systems, distribution elements, ancillary devices, noise silencers etc.) to meet all hygienic requirements
of the VDI 6022 standard and be operated in compliance with those requirements.
Operators must be familiar with the tasks and functions as well as the individual components of the appliance.
The appliance must be regularly inspected, cleaned and maintained by sufficiently qualified personnel (see the following
chapter).
Regardless of their qualifications, personnel must undergo hygiene training (see the following chapter).
The user must be able at any given time to provide evidence as to the qualifications of operators. If sufficient number of
qualified operational and service staff are not available, those activities must be commissioned to a specialist company that will
be responsible for the proper operation of the appliance.
The user has an obligation to carry out regular hygiene inspections of the appliance every 3 years (see following chapters).
The appliance may not be operated without air filters. The filter grade of supply fresh air must be at least F7. The filter grade of
exhaust air must be at least F5.
If the appliance has been out of operation for a prolonged period of time, it must be cleaned thoroughly before recommissioning;
if stricter hygienic requirements apply, wiping disinfection must be carried out.
After disinfecting make sure that no toxicologically suspicious or odour-active substances enter supply air!
The user has an obligation to appropriately record the appliance's operation (e.g. in the operational logbook).

7.2 Required qualifications of personnel as per the type of activity

Activities
Required personnel
qualifications
Required hygiene
training of personnel
Simple inspection and maintenance of equipment (e.g. replacing filter fabric, regular cleaning of equipment etc.) may be carried
out by personnel without professional qualifications who received category B hygiene training
a) Category B hygiene training of personnel
Personnel must demonstrate familiarity with the following areas:
(1) Need for and the importance of hygiene during the operation of HVAC equipment
(2) Hygiene issues of individual aggregates carrying air through HVAC equipment
(3) Maintenance of HVAC equipment, the effects of its size on determining maintenance intervals
(4) Simple measurement methods for checking HVAC equipment
(5) Actions to be taken in the case of occurrence of substances harmful to the environment and their removal
(6) Personal protective measures in the area of hygiene during operation and service activities
(7) Key regulations (in particular regulations on accident control) and technical standards
(8) Handling chemical cleaning and disinfecting agents
b) Category A hygiene training of personnel
Personnel must demonstrate familiarity with the areas of category B training specifications and additionally the following:
(1) Hygiene basics
(2) Significance of the various hygienic methods of air treatment
(3) Physical and chemical measurement methods, hygiene and microbiological inspection methods
(4) SBS (Sick-Building-Syndrome) issues, symptoms of problems and possible causes
(5) Technical development and its practical applications
(6) Hygiene regulations and technical rules for the operation of HVAC equipment
If these instructions are not adhered to, the manufacturer cannot guarantee the permanent
Operators
Inspection
Professional engineering
No special
qualifications in building
professional
maintenance, familiarity with
qualifications
measurement procedures for
the hygiene inspections of
HVAC devices
Category B
Category A
maintenance of the unit´s hygiene requirements.
Maintenance
Professional qualifications in electrical or metal
engineering with relevant experience in the field of
HVAC (familiarity with equipment design,
measurement technologies, equipment control and
12
Repairs
function)**
Category B