W.Tech RAA Series Manuel d'instructions télécharger pdf (Page 9)



Pag8



4. OPERATIONSTOBECARRIEDOUTBEFORETHESTARTUP



 4.1 Cleaning

• Makesurethatthedistributionsystemiscleanandthatthedistributionnozzlesarecorrectlypositionedandfreeofanykind

ofblockage.

• Checkifthewaterbasiniscompletelyclean,ifnot,cleanitusingwaterunderpressure.



 4.2 Inspectionandchecking

• Checktheanchori

ngofthetower,thefansandmotorsandmakesuretheyarecorrectlyandsecurelytightened.

• Inspectthemotorsbysight,checkingthattheyhavebeencorrectlyinstalled.

• Checktheconnectionsoftheterminalboxesofthemotors.

• Makethefanturnforaninstant,makingsurethatittur

nseasilyandinthecorrect direction,withoutanyunusual noiseor

friction.



5. STARTUP



 5.1 Secondarycircuit

1. Fillthecoldwaterbasinthroughthemake‐upwaterpipeor,betterstill,bymeansofflexiblehoseinsertedprovisionallyinto

thebasin.

2. Adjustthefloatarmofthemake‐upvalvetoensurethelevelismaintainedaround25mmbelowtheoverflowlevel.

3. Switchontheele

ctricpump,checkingitsconsumption.NEVERRUNTHEPUMPWITHOUTWATERINTHEBASIN!!!

4. Thelevelofwaterinsidethebasin,withtheelectricpumpworking,hastobealwaysabovethesu ction leveloftheelectric

pumpandgrid,inordertoavoidc

avitations.

 Thislevelcanbecheckedfromthemanholedoor,withtheelectricpumpworkingandthefan(s)completelystopped.

5. Oncethisregulationhasbeenachieved,thefan(s)motorcanbegintoworkandthecoolingtowerispreparedtostartup.



 5.2 Primarycircuit



Once the operations of starting up on the secondary ci

rcuit have been performed, the primary circuit pump will be switched on,

checkingitsconsumption.



VERY IMPORTANT !! THE TOWER MUST NEVER OPERATE WITHOUT HAVING THE FANGUARD AND THE ACCESS DOOR CORRECTLY FITTED. THE

FANMUSTBESTOPPEDBEFORETHEOPERATIONSOFREMOVINGANDREPLACINGTHESEELEMENTSARECARRIEDOUT.



6. OPERATINGINSTRUCTIONS



 6.1 TowerPerformance

Inordertoobtaintheappropriateperformancefromthecoolingtower,caremustbetakenthattheflowofbothfluidsarethedesign

ones,thesecondarycircuitwaterdist ributioniscorrect,andthedifferentitemsinthedistributionsystemmustarecleanandclear.

Ifachangeintheseconda

rycircuitwaterflowisrequired,itmightbenecessarytoreplacethenozzles,dependingonthedifference

betweenthedesignflowandthenewrequiredflow.PleaseconsultW‐TECH.

Itisessentialtokeepthecoilclean,asotherwisethecoolingtowerperformancewillbereduced.Itisadvisabl

etovisuallyinspectthe

coilperiodically.Inthesameway,it mustbeconsidered thatthe towerdoes not governheatloadand,therefore,the factthatthe

thermalrange(differencebetweenfluidintheprimarycircuitinletandoutlettemperature)ishigherorlowerthanthedesignda

ta,is 

irrelevant.



 6.2 Controlofwaterqualityinthecircuits

Controllingthe quality oftherecirculating fluidsisessential, not onlyfor the cooling toweritself but also forall  the elements that

make up the cooling circuits. We recommend that companies specialised in fluid conditioning and tr

eatment should be consulted

about the fluids for each circuit. However, some general rules and instructions to be followed for correct circuit control are given

below:

Thiscontrolmustbeaimedatpreventingtheelementsinthecircuitsfrom:

1. Foulingandblocking.

2. Corrosion.



6.2.1 Foulingandblocking

 Thisiscausedby:



2.1.1 Saltprecipitation(scaling),bytheirsolubilityproductbeingexceeded.

 Themostcommonsaltsare:

• CalciumCarbonate.

• CalciumSulphate.

• Silicates.



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Commentaires sur ces manuels

Pas de commentaire

W.Tech RAA Series Manuel d'instructions Page 9

Commentaires sur ces manuels

Produits connexes et manuels pour Climatiseurs à système divisé W.Tech RAA Series