KJM MANDÍK Installation, Commissioning, Maintenance
IZU 1.0 01/2021
MANDÍK, a.s., www.mandik.cz
R
9
6. STEAM HUMIDIFIER
6.01.
Clean, repair
6.02.
Clean, repair
6.03.
Clean
6.04.
Repair
6.05.
Repair
Function-check control valve
Check humidity limiter
Check steam distribution for deposits
Check contamination, microbial growth,
damage, corrosion
Check condensate tray for contamination and
drain trap function
7. DEHUMIDIFIERS
7.01.
Clean, repair
7.02.
Clean, repair
Check contamination, microbial growth,
damage, corrosion (casigns, heat exchanger,
droplet eliminator)
Check condensate tray for contamination and
drain trap function
8. SILENCERS
8.01.
Clean, repair or
replace; test with
contact slides if
necessary
Check contamination, microbial growth,
damage, corrosion (casigns, coulisses)
•
shorter or longer intervals of hygiene checks can be required/be allowed based on
the result of the hazard assessment according to VDI 6022, Blatt 1, Section 7.5
•
extension of check intervals is subject to a well-grounded air-hygiene report by
an expert, e.g. a VDIcertified specialist engineer
•
for each AHU, the operator shall maintain an operations log according to VDI
6022, Blatt 4
•
Filters - during the air filters changing, any contamination of the environment,
downstream air-conditioning units, and the rooms to be ventilated shall be
avoided. Particular care shall be taken to prevent contamination of the new air
filters to be installed. Personnel involved in changing filters shall wear suitable
protective equipment. Air filters shall be stored in a dry and clean place such
that damage, contamination or moistening can be excluded.
•
Steam humidifiers - shall be operated in such a manner that no condensate or
aerosol can enter the air duct system and shall not contain any substances
harmful to health. When the system is shut down, it has to be ensured that the
air humidifiers are switched off early enough to be blown dry while the system is
still running.
•
The mandatory tests - microbiological testing of water/surfaces, air measurement,
determination of clean-swept condition, … and its terms of the assessment values,
the required qualifications, the measurement procedure, and the evaluation of
the measurement results are beyond the scope of this manual and these points
are described in VDI 6022, Blatt1, Section 8.
