Stulz BNB Series - Checklist for Hygiene Checks in Line with VDI 6022

EN / 10-2015 / 1000683 © STULZ GmbH, Hamburg
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Maintenance   STULZUltraSonic-SystemforDirectRoomHumidicationBNB-
11.2. Checklist for hygiene checks in line with VDI 6022
Checklist for hygiene checks in line with VDI 6022
Job to be performed Necessary measures Inspection interval*
Plant operator
1x
week
3
months
6
months
Visualinspectionasfollows: Whenrequired: X
• Check mist outlets for deposits Clean
X
• Check transducer for deposits Inspect, replace if necessary
X
• Check drain/drainage valve Clean and service
X
• Check air filter Clean and service
X
• Check integrated BNB
water tray for impurities,
damage, microbial
growth and corrosion
Rinse and dry tray, disinfect, check quality of
supplied water
X
Indicative measurement of colony count
DipslidetestasperVDI6022Page1<10
2
CFU/ml
X
Specialist
engineer
1)
Determination of total colony count of
Legionella, Pseudomonas aeruginosa
Qualified sampling
1)
as per VDI 6022 Page1
Colonycount<150CFU/ml
Legionella<100CFU/100ml
Pseudomonasaeruginosa<100CFU/100ml
X
1)
QualiedsamplingwithinthemeaningoftheDirectivereferstosamplingforthepurposeofriskassessmentatthesystemboundarytotheroom.Itmustentail
expert microbial sampling in accordance with Objective G or DIN EN ISO 19458. If further sampling points
arerequired(e.g.afterreverseosmosis).Ifmicrobialsamplingtoassessthewater-bearingsystemmustbeperformedinaccordancewithObjectiveB
as per DIN EN ISO 19458. A sampling tap will be required for this purpose.
CAUTION
Separate logbook.
All tests and measurements must be documented in a separate logbook.
Note
CAUTION
Shortened inspection intervals.
Ifthespeciedrecommendedvaluesareexceeded,theinspectionintervalsdescribedheremustbe
halved until the results of inspections are no longer critical and remain so over the long term.
Note
CAUTION
Adjustment of inspection intervals.
If the recommended values are met over a period of at least one year, the inspection intervals can
then gradually be adapted.
Note
CAUTION
Measuring sensor and control unit.
Ultrasonichumidiersdistributedaroundtheroommustgenerallybeequippedwithacontrolunit.
Note
CAUTION
VDI 6022.
Also see "4.10. Use in conformity with VDI 6022" on page 24.
Note