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an appropriate control devices, or the appliance must be put out of operation for the period when

filters are at the risk of moistening (if the type of operation allows this).

Air duct including accessories with autonomous regulation of operation is to be connected on the

fresh air supply. Such duct will, in compliance with the regulation VDI 6022, provide for

appropriate treatment of supplied fresh air to prevent air filter from getting wet. In case the duct is

not connected or if it does not include such accessory, the appliance is to be put out of operation

as long as the risk of air filters to get wet persists (thick fog, snowing).

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 must not be operated without air filters. The filter grade of supply fresh air must be

at least ISO ePM1 50% (F7). The filter grade of exhaust air must be at least ISO ePM10 50%

(M5).

If the appliance has been out of operation for a longer 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).

6.2.

Required qualifications of personnel as per the type of activity

Activities

Required

personnel

qualifications

Required hygiene

training of

personnel

** simple inspection and maintenance of the equipment (e.g. replacing filter cassettes, 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

Operators

Professional engineering

qualifications in building

maintenance, familiarity

No special

professional

with measurement

qualifications

procedures for the

hygiene inspections of

HVAC devices

Category B

Inspection

Maintenance

electrical or metal engineering with

relevant experience in the field of

HVAC (familiarity with equipment

technologies, equipment control

Category A

Repairs

Professional qualifications in

design, measurement

and function)**

Category B