GEA Bock HG44e Series - Page 34

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D
GB
F
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96416-08.2020-DGbFEIRu
Specialaccessoriesareonlypremountedinthefactoryiforderedspeciallybycustomer.Retrottingis
possibleinfullcompliancewiththesafetyinstructionsandrepairinstructionsenclosedwiththekits.
Informationabouttheuse,operation,maintenanceandservicingofthecomponentsisavailableinthe
printedliteratureorontheinternetunderwww.gea.com.
10 | Accessories
ATTENTION Capacity-regulatedoperationaltersthegasspeedsandpressure
ratiosoftherefrigeratingplant:Adjustthesuctionlineroutingand
dimensioning accordingly,donot set the control intervalstoo
closeanddonotletthesystemswitchmorethan12timesper
hour(refrigeratingplantmusthavereachedastateofequilibrium).
Continuousoperationinthecontrolstageisnotrecommendedas
thegasvelocityintheplantsystemundercertaincircumstances
doesnotguaranteesufcientoilreturntothecompressorwith
activatedcapacityregulator.
Werecommendswitchingtounregulatedoperation(100%capac-
ity)foratleast5minutespercapacity-regulatedoperatinghour.
Anassuredoilreturn canalsoberealisedbya100%capacity
requirementaftereachcompressorrestart.
Electricalactuationofthesolenoidvalve:Normallyopen,(cor-
respondsto100%compressorcapacity).
WARNING Severalcapacityregulatorscannotswitchatthesametimeduring
compressoroperation!Otherwisethesuddenchangeinloadcan
damagethecompressor!Complywiththeswitchingintervalof60s.
• Complywiththeswitchingsequence:
Swichingon LR1 60s LR2
Swichingoff LR2 60s LR1
Fig.22
Forthecapacityregulatorastepprotectionis
optionalavailable,Art-Nr.81449.