SystemAir KA HSI-2-2-S-R-50F-TB2-L2 User Manual

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Maintenance
• Maintainthehoneycombhumidiersectionsoastopreventthegrowthandreproductionofmicroorganismsonany
component of the air handling unit / ventilation system.
• Ataminimum,thewaterinthehumidiertankmustmeetthequalityrequirementsforpotablewater.Inorderto
avoid the build-up of lime deposits on the water droplet eliminator, total water hardness should not exceed 7°dH.
• Prevent the growth of bacteria by means of an appropriate sterilisation system or by means of regular and
appropriate cleaning.
• The bacteria count in the circulating water should not exceed the standard 1000 CFU/ml level at an incubation
temperature of 20°C ± 1°C and 36 °C ± 1°C.
• AvoidtheoccurrenceofLegionellabacteriainthehumidierwater.Thetotalcountofsuchbacteriashouldnot
exceed 1 CFU/ml.
• The total count of aerobic bacteria and Legionella bacteria should not exceed the level allowable according to the
regulationsinforceintheregionwheretheunitcontainingtheparticularhoneycombhumidiersectionisinstalled.
Checkthecountofbacteriainwaterinaccordancewiththeapplicableregulations.
• Apply a physical or chemical method of disinfection. The selected method must be effective and not harmful to
health.
• Therelativehumidityofairwithinthesystemshouldnotexceed90%.
• Theadditionofchemicalstowaterforhoneycombhumidicationmustnotcompromiseairquality.
• In selecting the process, consult hygiene experts.
• Priortostartingupthehumidicationfunction,makesuretostartthehumidierwatersupply(startthepump)tothe
humidiercassettes–15minbeforestartingthefan.Thiswill,accordingtothemanufacturer’srecommendations,
ensurefullwettingofthehumidiercassettes.
• Thedurationofthehumidieroperation,fromthestarttotheshutdown,shouldbe,ataminimum,10to15min.The
sameamountoftimeshouldalsopassbetweentheshutdownandthenextrestartofthehumidier.Ifthehumidier
runsinasequenceofshortintervals,somepartsofthehumidiermaybeneitherfullywetnorfullydry.Accordingto
themanufacturer’sdeclaration,thismayresultinashlikeodour.
• Oncethereisnolongerademandforhumidifyingandthehoneycombhumidiersectionisshutdown(thewater
supplyisshutoff),theairhandlingunit/fanmaynotbestoppeduntilthehumidiercassettesaredry.Thenecessary
prolonged time of operation of the air handling unit is 20 minutes at a minimum.
• Ifthehoneycombhumidieristobeoutofoperationforatleast24hours,drainthewaterfromthehumidiertank.
We recommended the installation of equipment for automatic water draining and drying.
• Whentheairhandlingunitisoutofoperation,thehumidiersection,thehoneycombhumidierandthesiphonmust
be cleaned of all lime deposits and dirt. If the unit is not cleaned, particles of dirt harden and cause early defects in
the pump upon its restarting.
• Intheeventodours(e.g.arotteneggodour)arepresentinthehumidier(andinturn,inthesupplyair),this
indicates the presence of bacteria in the water or humidifying cassettes. In such an event, shut down the air handling
unit,drainthewaterfromthehumidiersection,slideoutthecassettesanddisinfectthecassettes,thewatertank
and the section casing.
• Carry out a microbiological analysis of the supply water. If the presence of bacteria is established, disinfect the water.
• Ifdustoforganicoriginispresentintheairenteringthehoneycombhumidier,upgradetheltrationtoclassF7.
• Settheappropriaterateofthehoneycombhumidierbleed-off.Tothisend,carryoutachemicalanalysisofthe
supply water to obtain the necessary data, as follows:
• CaCO3 content (mg/l), Ca+ content (mg/l), HCO3- content (mg/l), pH value. From the water quality diagram
(providedinthehoneycombhumidiermanufacturer’sinstructions),determinethebleed-offfactor,f0.Fora
particular unit, calculate the bleed-off water volume according to the following formula:
• O = f0 x E, where:
• E is the amount of absorbed water (l/min)
• O is the amount of bleed-off water (l/min)
• Setthebleed-offwaterowratebymeansofthebleed-offvalvebyturningthevalveknobtothecorresponding
number(totheleftortotheright),thencheckthebleed-offwaterowrate(capturethebleed-offwaterina
containerofaknowncapacity,notlessthan1litre,andmeasurethecontainerllingtime).Repeatthisprocedure
until the correct bleed-off rate is achieved.

SystemAir KA HSI-2-2-S-R-50F-TB2-L2 Specifications

General

Brand	SystemAir
Model	KA HSI-2-2-S-R-50F-TB2-L2
Category	Fan
Language	English