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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.

GEA Bock HGX44e/475-4 User Manual

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