Danfoss BOCK HG44e User manual

AQ452044031215en-000201
BOCK®HG44e/HG56e (HC/LG)
Operating guide
HG(X)44e/475-4 (S) HG(X)56e/850-4 (S)
HG(X)44e/565-4 (S) HG(X)56e/995-4 (S)
HG(X)44e/665-4 (S) HG(X)56e/1155-4 (S)
HG(X)44e/770-4 (S)
HG44e/475-4 (S) HC ............................... HG44e/770-4 (S) HC
HG56e/850-4 (S) HC ............................. HG56e/1155-4 (S) HC
HGX44e/475 (S/ML) 9 LG ................. HGX44e/770 (S/ML) 22 LG
HGX56e/850 (S/ML) 18 LG ............. HGX56e/1155 (S/ML) 35 LG
Translation of the original instructions

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Contents Page
1 Safety 4
 1.1 Identicationofsafetyinstructions
 1.2 Qualicationsrequiredofpersonnel
 1.3 Generalsafetyinstructions
 1.4 Intendeduse
 2 Safetyinstructionsforuseofammablerefrigerants 6
 2.1 Safetyinstructions
2.2 Qualicationsrequiredofpersonnel
3 Product description 7
 3.1 Shortdescription
 3.2 Nameplate
 3.3 Typekey
 3.4 TypekeyHCcompressors
 3.5 TypekeyLGcompressors
 4 Areasofapplication 10
 4.1 Refrigerants
 4.2 Oilcharge
 4.3 Limitsofapplication
About these instructions
Readtheseinstructionsbeforeassemblyandbeforeusingthecompressor.Thiswillavoidmisunder-
standings andpreventdamage.Improperassemblyanduseofthecompressorcanresultinserious
orfatalinjury.
Observethesafetyinstructionscontainedintheseinstructions.
Theseinstructionsmustbepassedontotheendcustomeralongwiththeunitinwhichthecompres-
sorisinstalled.

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Contents Page
5AreasofapplicationonHCandLGcompressors 12
5.1 Refrigerants
 5.2 Oilcharge
 5.3 Limitsofapplication
6Compressorassembly 13
 6.1 Storageandtransport
 6.2 Settingup
 6.3 Pipeconnections
 6.4 Pipes
 6.5 Layingsuctionanspressurelines
 6.6 Operatingtheshut-offvalves
 6.7 Operatingmodeofthelockableserviceconnections
 6.8 Suctionpipelterandlterdrier
 7 Electricalconnection 17
 7.1 Informationforcontactorandmotorcontactorselection
 7.2 Standardmotor,designfordirectorpartialwindingstart
 7.3 Basiccircuitdiagramforpartialwindingstartwithstandardmotor
 7.4 Specialmotor:designfordirectorstar-deltastart
7.5 Basiccircuitdiagramfor star-delta startwithspecialmotor
7.6 Electronictriggerunit INT69 G
7.7 Connectingofthetriggerunit INT69 G
7.8 Functionaltestofthetriggerunit INT69 G
7.9 ElectronictriggerunitINT69GonHCandLGcompressors
 7.10 Oilsumpheater(accessories)
 7.11 OilsumpheateronHCandLGcompressors
 7.12 Capacityregulator(accessories)
7.13 Selectionandoperationofcompressorswithfrequencyconverters
 8 Commissioning 28
 8.1 Preparationsforstart-up
8.2 Pressureintegritytest
 8.3 Leaktest
 8.4 Evacuation
 8.5 Refrigerantcharge
 8.6 Start-up
 8.7 Avoidslugging
 8.8 Connectionofoillevelregulator
9 Maintenance 31
 9.1 Preparation
 9.2 Worktobecarriedout
 9.3 Sparepartsrecommendation/Accessories
 9.4 Lubricants/oil
 9.5 Decommissioning
 9.6 Additionalinformationwhenusingammablerefrigerants
 10 Accessories 33
 10.1Capacityregulator
 11 Technicaldata 35
 12 Dimensionsandconnections 37
 13 Declarationofincorporation 39

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1|Safety
1.2 Qualicationsrequiredofpersonnel
DANGER Indicatesadangeroussituationwhich,ifnotavoided,
willcauseimmediatefatalorseriousinjury.
WARNING Indicatesadangeroussituationwhich,ifnotavoided,
maycausefatalorseriousinjury.
CAUTION Indicatesadangeroussituationwhich,ifnotavoided,
maycausefairlysevereorminorinjury.
ATTENTION Indicatesasituationwhich,ifnotavoided,
maycausepropertydamage.
INFO Importantinformationortipsonsimplifyingwork.
WARNING Inadequatelyqualiedpersonnelposestherisk ofaccidents,the
consequencebeingseriousor fatalinjury.Workoncompressors
isthereforereservedforpersonnelwhichisqualiedtoworkon
pressurizedrefrigerantsystems:
•For example, a refrigeration technician, refrigeration mechatronic
engineer. As well as professions with comparable training, which
enables personnel to assemble, install, maintain and repair
refrigerationandair-conditioningsystems.Personnelmustbecapable
ofassessingtheworktobecarriedoutandrecognisinganypotential
dangers.
1.1 Identicationofsafetyinstructions:

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1|Safety
1.4 Intended use
1.3 Generalsafetyinstructions
WARNING Riskofaccidents.
Refrigeratingcompressorsarepressurisedmachines and as such
callforheightenedcautionandcareinhandling.
The maximum permissible overpressure must not be exceeded,
evenfortestingpurposes.
Riskofburns!
- Dependingontheoperatingconditions,surfacetemperaturesof
over60°Conthedischargesideorbelow0°Conthesuctionside
canbereached.
-Avoidcontactwithrefrigerantnecessarily.
Contactwithrefrigerantcancausesevereburnsandskin
damage.
WARNING The compressor may not be used in potentially explosive
environments!
These assembly instructions describe the standard version of the compressor named in the title
manufactured by Bock. Bock refrigerating compressors are intended for installation in a machine
(withintheEUaccordingtotheEUDirectives2006/42/ECMachineryDirective,2014/68/EUPressure
EquipmentDirective).
Commissioningispermissibleonlyifthecompressorhasbeeninstalledinaccordancewiththeseas-
semblyinstructionsandtheentiresystemintowhichitisintegratedhasbeeninspectedandapproved
inaccordancewithlegalregulations.
Thecompressorsareintendedforuseinrefrigerationsystemsincompliancewiththelimitsof
application.
Onlytherefrigerantspeciedintheseinstructionsmaybeused.
Anyotheruseofthecompressorisprohibited!

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2 |Safety instructions for use of
flammable refrigerants
DANGER • Explosion and fire risk! Hydrocarbons and synthetic HFO
refrigerants are colourless, combustible gases which
occur naturally and which are explosive in a certain blend!
• Hydrocarbons are classied into the safety group A3 (highly-
inammablerefrigerant)accordingtoEN378.
•HFOrefrigerantsareclassiedintothesafetygroupA2L(hardly-
inammablerefrigerant)accordingtoEN378.
Astheyareheavierthanair,theoperatinglocationmustbeabove
groundleveltoallowunrestricteddischargeofthegas.
• By means of a risk and hazard analysis, appropriate technical
measuresaretobeidentifiedinordertoachievesufficientrisk
reduction. If necessary, a classification of the hazardous areas
accordingtoEN60079-10-1shouldbecarriedout.Iftherefriger-
antconcentrationexceedsthevalueof25%ofthelowerflamma-
bilitylimit(LEL),allequipmentinthehazardousareawhichisnot
permittedforoperationinhazardousareasmustbeimmediately
switchedoffwithoutanyvoltage.
•Useonlysuitableequipmentapprovedforflammablerefrigerants.
•Observethenationalregulations.
INFO Semi-hermeticcompressorsaretobeclassifiedas"technically
tight"(seee.g.TRBS2152part2/TRGS722).
2.1 Safety instructions
2.2 Qualicationsrequiredofpersonnel
WARNING Inadequatelyqualiedpersonnelposestheriskof accidents,the
consequence being serious or fatal injury. Work on compressors
isthereforereservedforpersonnelwhichisqualiedinhandling
ammablerefrigerants.

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• HG44e:Semi-hermeticfour-cylinderreciprocatingcompressorwithsuction-gascooleddrivemotor.
• HG56e:Semi-hermeticsix-cylinderreciprocatingcompressorwithsuction-gascooleddrivemotor.
• Preferredapplicationrange:normalrefrigeratingandair-conditioning.
3|Product description
Nameplate
Fig.1
3.1 Short description
Valveplate Cylinder
cover
DimensionandconnectionvaluescanbefoundinChapter 12
Transporteyelet
Discharge
shut-offvalve
Oilpump
Suction
shut-offvalve
Oilsightglass
Drivesection
Motorsection
Fig.2
HG44e
HG56e
Terminalbox

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1 Typedesignation 6 Voltage,circuit,frequency
2 Machinenumber 7 Nominalrotationspeed
3 maximumoperatingcurrent 8 Displacement
4 Startingcurrent(rotorblocked) 9 Voltage,circuit,frequency
 Y:Partwinding1 10 Nominalrotationspeed
 YY:Partwindings1and2 11 Displacement
5 ND(LP): max.admissibleoperatingpressur e12 Oiltypelledatthefactory
(g)Lowpressureside 13 Terminalboxprotectiontype
 HD(HP): max.admissibleoperating Electricalaccessoriescanchange
pressur e(g)Highpressureside theIPprotectionclass!
Observethelimitsofapplication
diagrams!
50 Hz
}
60 Hz
}
3|Product description
Fig.3
3.2 Nameplate (example)
1
2
3
4
5
6
7
8
9
10
11
12
13
BB12345A001
HGX44e/770-4S
35,0A
101A 174 A
67,0
80,4
SE 55
/
HG 44 e 770-4 SX
¹)HG-HermeticGas-Cooled(suctiongas-cooled)
²)X - Esteroilcharge(HFCrefrigerant,e.g. R134a,R404A/R507,R407C,R407F)
3)S - Morepowerfulmotor,e.g.forair-conditioningapplications
Motorvariant3)
Numberofpoles
Sweptvolume
e-series(optimizedefciency)
Numbersofcylinders
Size
Oilcharge²)
Series¹)
3.3 Typekey (example)
Bock GmbH, Benzstr. 7
72636 Frickenhausen, Germany
BOCK
BOCKlubE55

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3|Product description
/
/
HG
HG
4
4
4
4
e
e
770-
770
HC
LG
4
S
S
22X
3.4 Typekey HCcompressor (example)
3.5 Typkey LGcompressor (example)
¹)HG-HermeticGas-Cooled(suctiongas-cooled)
²)S - Morepowerfulmotor
¹)HG-HermeticGas-Cooled(suctiongas-cooled)
²)X - Esteroilcharge
3)S - Morepowerfulmotor
ML-Motorfornormalcoolinganddeepfreezing
Hydrocarbons
Motorvariant²)
Numberofpoles
Sweptvolume
e-series
Numbersofcylinders
Size
Series¹)
Low-GWP
Engineperformanceinhp
Motorvariant3)
Sweptvolume
e-series
Numbersofcylinders
Size
Oillling²)
Series¹)

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ATTENTION The oil level must be in the
visiblepartofthesightglass;
damage to the compressor
is possible if overfilled or
underfilled!
4 |Areas of application
Thecompressorsarelledatthefactorywiththefollowingoiltype:
-fürR134a,R404A/R507,R407C,R407F BOCKlubE55
 -fürR22  BOCKlubA46
Compressorswithesteroilcharge(BOCKlubE55)aremarkedwithanXinthetype
designation(e.g.HGX44e/770-4).
4.1 Refrigerants
• HFKW/HFC:  R134a,R404A/R507,R407C,R407F
• (H)FCKW/(H)CFC: R22
4.2 Oilcharge
INFO Forrefilling,werecommendtheaboveoiltypes.
Alternatives:see chapter 9.4
ATTENTION Compressoroperationispossiblewithintheoperatinglimits.
ThesecanbefoundinBockcompressorselectiontool(VAP)
undervap.bock.de.Observetheinformationgiventhere.
-Permissibleambienttemperature(-20°C)-(+60°C)
-Max.permissibledischargeendtemperature140°C.
-Max.permissibleswitchingfrequency12x/h.
-Aminimumrunningtimeof3min.steady-statecondition
(continuousoperation)mustbeachieved.
Foroperationwithsupplementarycooling:
-Useonlyoilswithhighthermalstability.
-Avoidcontinuousoperationnearthethreshold.
Foroperationwithcapacityregulator:
- Continuousoperation,whenthecapacityregulatorisactivated,
isnotpermissibleandcancausedamagetothecompressor.
-Thesuctiongassuperheattemperaturemayneedtobereduced
orsetindividuallywhenoperatingneartothethreshold.
- Whenthecapacityregulatorisactivated,thegasvelocityinthe
systemcannotundercertaincircumstancesensurethatsuf-
cientoilistransportedbacktothecompressor.
Foroperationwithfrequencyconverter:
-The maximum current and power consumption must not be
exceeded.Inthecaseofoperationabovethemainsfrequency,the
applicationlimitcanthereforebelimited.
(For more on the subject of frequency converters, see chapter
7.13,p.27)
4.3 Limitsofapplication
max.
min.
oillevel
Fig.4Fig.4Fig.4
HG44e
1,6Ltr.
HG56e
1,4Ltr.
~
~
~
~

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4 |Areas of application
ATTENTION When operating in the vacuum range, there is a danger of air
enteringon thesuction side. Thiscan causechemical reactions,
apressureriseinthecondenserandanelevatedcompressed-gas
temperature.Preventtheingressofairatallcosts!
Maximumadmissible
operatingpressure(g)
(LP/HP)1):19/28bar
1) LP=Lowpressure
HP=Highpressure

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5 |Areas of application at HC and LG compressors
5.3 Operatinglimits
ATTENTION Compressor operation is possible within the operating limits.
ThesecanbefoundinBockcompressorselectiontool (VAP)under
vap.bock.de. Observe the information given there and the follo-
wingnotes:
- Thenalcompressiontemperaturemustbeatleast20Kabove
thecondensingtemperature(dewpoint).Ifnecessary,aninter-
nalheatexchangerIHXmustbeprovidedforthispurpose.
-Min.oiltemperature≥ 30°C.
-Operationinthevacuumrangeisnotpermitted.
During operation in the vacuum range, there is a danger of air
entering on the suction side. This can cause chemical reactions,
pressureriseinthecondenserandanexcessivepressuregastem-
peratureaswellasshiftingoftherefrigerantignitionlimitintothe
criticalrange.Avoidabsolutelyanyentryofair!
Usealowpressureswitch!Selectashut-offpointmin.50Pahigher
thantheprevailingsurroundingpressure!
5.1 Refrigerants
• Hydrocarbons:  R290,R1270(Recommendationquality2.5(<50ppmH2O))
• HFOrefrigerants:  R1234ze,R1234yf,R455A,R454C
5.2Oilcharge
Thecompressorsarefactory-chargedwiththefollowingoiltype:
• HCcompressors:  BOCKlubG68
• LGcompressors:  BOCKlubE55
BOCKlubE85(fromtO>15°C,mustbespecifiedintheorder)
Maximumpermissibleoperating
pressure(LP/HP)1):19/32bar
1) LP=LowpressureHP=Highpressure

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Sunprotection:Ifthecompressorissetupoutdoors,ithas
tobeprotectedfromdirectsunlight.
6 |Compressor assembly
INFO Newcompressorsarefactory-lledwithinertgas.Leavethisser-
vicechargeinthecompressorforaslongaspossible andprevent
the ingress of air. Check the compressor for transport damage
beforestartinganywork.
ATTENTION Attachments(e.g.pipeholders,additionalunits,fasteningparts,
etc.)directlytothecompressorarenotpermissible!
 Setuponanevensurfaceorframewithsufcientload-
bearingcapacity.
 Singlecompressorpreferablyonvibrationdamper.
 Duplexandparallelcircuitsalwaysrigid.
 Provideadequateclearanceformaintenancework.
 Ensureadequatecompressorventilation.
 Donotuseinacorrosive,dusty,dampatmosphereora
combustibleenvironment.
F
E
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B
A
1 2
3
4
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D
C
4
3
2
1
A
B
Tol.-Ang. DIN ISO 2768-mK
Ra Rz
Maß Passung
Freigabe
Alternativbezug:
Baumustergeprüft
Teil inaktiv
Lieferantenzeichnung
-
-
K.-Auftrag:
PL:
Zeichnung ungültig
Entwicklungsstand
Teil keine Serie
120
400
±0.5
über 0.5
bis 6
Benzstraße 7 - 72636 Frickenhausen - Germany - www.bock.de
-
-
Unbemaßte Radien:
-
Diese Zeichnung ist unser Eigentum!
Sie darf ohne unsere Genehmigung weder nach-
gebildet, vervielfältigt, oder Dritten Personen zu-
gänglich gemacht werden. Der Nachbau nach
dieser Zeichnung, oder an Hand der nach dieser
Zeichnung hergestellten Gegenstände durch den
Abnehmer oder Dritte ist nicht gestattet.
Wir behalten uns alle Rechte, gemäß DIN ISO 16016
an dieser Zeichnung vor.
Bearb.
Datum
Änderungs-Nr.
Werkstoff:
Ausgangsteil, bzw. Rohteil:
-
-
Gepr.
Name Datum
19.04.
Werkstückkanten
DIN ISO 13715
Ersatz für:
Ersetzt durch:
Erstellt
2010
Geprüft
-
Kurz
Zone
1/x
Oberflächenbehandlung / Härte:
-
Blatt:
Änderungsbeschreibung
400
Benennung:
±0.8
1000
30 6
-
±0.3
120
30
±0.2
Zeichn.-Nr. Teile-Nr.
Oberflächenangaben ISO 1302
x.xxxx-xxxxx.x
Zust.
Gußtoleranzen:
Gewicht: (kg)
±0.1
Maßstab:
1:1
Wasserwaage
für Indesign
Der Lieferant muß sicherstellen, dass die Ware in
einwandfreiem Zustand angeliefert wird (Korrosions-
schutz, Verpackung für sicheren Transport).
Rz 25
Rz 160
s
25
z y x w u t
0,05
Rz 1,6
0,3
0,7
1,6
2
Rz 16
6,3
Rz 63
Rz 6,3
Rz 12,5
F:\user\kurz\3D Sachen\3D Teile\Zeichnungen\Wasserwaage
6.2 Settingup
?
6.1 Storageandtransport
 Usetransporteyelet.
 Donotliftmanually!
 Useliftinggear!
 Storageat(-30°C)-(+70°C),maximumpermissiblerelativehumidity
10%-95%,nocondensation
 Donotstoreinacorrosive,dusty,vaporousatmosphereorinacom-
bustibleenvironment.

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6.4 Pipes
 Pipesandsystemcomponentsmustbecleananddryinsideandfreeofscale,swarfandlayersof
rustandphosphate.Onlyuseair-tightparts.
 Lay pipes correctly. Suitable vibration compensators must be provided to prevent pipes being
crackedandbrokenbyseverevibrations.
 Ensureaproperoilreturn.
 Keeppressurelossestoanabsoluteminimum.
The pipe connectionshavegraduatedinsidediameterssothatpipeswith
standartmillimetreandinchdimensionscanbeused.
Theconnectiondiametersoftheshut-offvalvesareratedformaximum
compressoroutput.Theactualrequiredpipecrosssectionmustbe
matchedtotheoutput.Thesameappliesfornon-returnvalves.
Fig.5:graduated
internaldiameter
6.3 Pipeconnections
ATTENTION Damagepossible.
Superheatingcandamagethevalve.
Removethepipesupportsfromthevalveforsoldering.
Onlysolderusinginertgastoinhibitoxidationproducts(scale).
6 |Compressor assembly
6.5 Layingsuctionandpressurelines
ATTENTION Improperlyinstalledpipescancausecracksandtears,theresult
beingalossofrefrigerant.
INFO Proper layout of the suction and discharge lines directly after
the compressor is integral to the system’s smooth running and
vibrationbehaviour.

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Fig.6
As short as
possible
Rigid
fixedpoint
6 |Compressor assembly
Aruleofthumb: Alwayslaytherstpipesectionstartingfromtheshut-offvalvedownwards and
paralleltothedriveshaft.
a)ForHG44eaintermediateange(height27mm)isoptionalavailable,
 Art-Nr.097B81194*.
 Withthisintermediateangeitispossibletolaythepressurelinedirectlyfrom
thevalvetotheleftorright.
*PleasenotethatthelegacyBOCKref.numbersarewithout097B.
6.6 Operatingtheshut-offvalves
 Beforeopeningorclosingtheshut-offvalve,releasethevalvespindlesealbyapprox.¼ofaturn
counter-clockwise.
 Afteractivatingtheshut-offvalve,re-tightentheadjustablevalvespindlesealclockwise.
Fig.7 Fig.8
Valvespindleseal
Release Tighten
a)

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6 |Compressor assembly
Pipeconnection
Pipeconnection
6.7 Operatingmodeofthelockableserviceconnections
Fig.9
Openingtheshut-offvalve:
Spindle:turntotheleft(counter-clockwise)asfarasitwillgo.
—>Shut-offvalvecompletelyopened/serviceconnectionclosed.
Theconnectionwhichcannotbeshutoffisintendedforsafetydevices.
Fig.10
Openingtheserviceconnection
Spindle:Turn½-1turntotherightclockwise.
—>Serviceconnectionopened/shut-offvalveopened.
Theconnectionwhichcannotbeshutoffisintendedforsafetydevices.
Serviceconnection
closed
Connection
blocked
Spindle
Connectioncannot
beshutoff
Connectioncannot
beshutoff
Serviceconnection
opened
Spindle Connection
open
Compressor
Compressor
Afteractivatingthespindle,generallytthespindleprotectioncapagainandtightenwith14-16Nm.
Thisservesasasecondsealingfeatureduringoperation.
For systems with long pipes and higher degree of contamination, a lter on the suction-side is
recommended.Thelterhastobebereneweddependingonthedegreeofcontamination(reduced
pressureloss).
Moisture in the refrigeration circuit can lead to crystal and hydrate formation. For this reason, we
recommendusingalterdrierandasightglasswithamoistureindicator.
6.8Suctionpipelterandlterdrier

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Designationonthenameplate
Y/YY
Compressorswiththismarkingaresuitablefordirectorpartialwindingstart.Themotorwindingis
subdividedintotwoparts:Partwinding1=50%andpartwinding2=50%.Thiswindingdivision
reducesthestart-upcurrentneededforapartwindingstarttoapprox.50%ofthatforadirectstart.
INFO Amechanicalunloadedstartwithbypasssolenoidvalveis 
notrequired.
7 |Electrical connection
7.1 Informationforcontactorandmotorcontactorselection
Allprotectionequipment,switchingandmonitoringdevicesmustcomplywiththelocalsafetyregula-
tionsandestablishedspecications(e.g.VDE)andregulationsaswellasthemanufacturer’sspeci-
cations.Motorprotectionswitchesarerequired!Motorcontactors,feedlines,fusesandmotor
protectionswitchesmust beratedaccordingto themaximumoperatingcurrent (seenameplate).
Formotorprotection,useacurrent-independent,time-delayedoverloadprotectiondeviceformonitor-
ingallthreephases.Adjusttheoverloadprotectiondevicesothatitmustbeactuatedwithin2hours
at1.2timesthemaximumworkingcurrent.
INFO Connectthecompressormotorinaccordancewiththecircuitdiagram
(seeinsideofterminalbox).
Usesuitablecableentrypointofthecorrectprotectiontype(see
nameplate)forroutingcablesintotheterminalbox.Insertthestrain
reliefsandpreventchafemarksonthecables.
Comparethevoltageandfrequencyvalueswiththedataforthe
mainspowersupply.
Onlyconnectthemotorifthesevaluesarethesame.
DANGER Riskofelectricshock!Highvoltage!
Onlycarryoutworkwhentheelectricalsystemisdisconnected
fromthepowersupply!
7 Electricalconnection
ATTENTION When attachingaccessories with anelectrical cable,a minimum
bendingradiusof3xthecablediametermustbemaintainedfor
layingthecable.
7.2 Standardmotor,designfordirectorpartwindingstart

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Οnderung
2
0
Datum Name
Datum
Bearb.
Gepr.
Norm
1
20.02.2009
bauknecht
26.11.2020
Urspr.
2
Ers. f.
3
Ers. d.
4
PW INT69 HG44/66
567
BOCK COMPRESSORS
8
=
+
9
Bl.
6.d Bl.
5.a
2.a
Anschlußkasten Verdichter
BT1
INT69
DELTA- P II
QA1
L1 L2 L3 N PE
FC1.1
I> I> I>
QA2
1U1
1V1
1W1
PE
EC1
M
Y/YY
2U1
2V1
2W1
FC1.2
I> I> I>
QA3
FC1.1
FC1.2
FC2
SF1
BP2
P>
QA2
BP3
P
QA2
KF1
KF1
QA2
L1.1
L2.1
L3.1
L1.2
N
PE
QA3
BT4
BT2
Θ
1112 14
L N B1 B2
12
11
10
9
8
7
6
5
4
3
2
1
Θ
vio bn bu gr
Θ
EB1
pk og
21
20
BT3
Θ
Fig.11
50% 50%
Compressorterminalbox
7.3 Basiccircuitdiagramforpartwindingstartwithstandardmotor
BP2 Highpressuresafetymonitor
BP3 Safetychain(high/lowpressuremonitoring)
BT1 Coldconductor(PTCsensor)motorwinding
BT2 Thermalprotectionthermostat (PTCsensor)
BT3 Oiltemperaturesensor
BT4 Releaseswitch(thermostat)
DELTA-PII OildifferentialpressuresensorDELTA-PII(accessorie)
EB1 Oilsumpheater
EC1 Compressormotor

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Οnderung
2
0
Datum Name
Datum
Bearb.
Gepr.
Norm
1
20.02.2009
bauknecht
26.11.2020
Urspr.
2
Ers. f.
3
Ers. d.
4
PW INT69 HG44/66
567
BOCK COMPRESSORS
8
=
+
9
Bl.
6.d Bl.
5.a
2.a
Anschlußkasten Verdichter
BT1
INT69
DELTA- P II
QA1
L1 L2 L3 N PE
FC1.1
I> I> I>
QA2
1U1
1V1
1W1
PE
EC1
M
Y/YY
2U1
2V1
2W1
FC1.2
I> I> I>
QA3
FC1.1
FC1.2
FC2
SF1
BP2
P>
QA2
BP3
P
QA2
KF1
KF1
QA2
L1.1
L2.1
L3.1
L1.2
N
PE
QA3
BT4
BT2
Θ
1112 14
L N B1 B2
12
11
10
9
8
7
6
5
4
3
2
1
Θ
vio bn bu gr
Θ
EB1
pk og
21
20
BT3
Θ
FC1.1/1.2 Motorprotectionswitch
FC2 Controlpowercircuitfuse
INT69 G ElectronictriggerunitINT69 G
KF1 Delayrelayforcontactorswitchover
QA1 Mainswitch
QA2 Mainscontactor(partwinding1)
QA3 Mainscontactor(partwinding2)
SF1 Controlvoltageswitch
DANGER Explosionrisk!
Electronic trigger
INT69 G at HC and LG
compressorshastobe
installed outside any
dangerarea!
Seealsochapter7.9.

D
GB
F
E
20 | AQ452044031215en-000201 © Danfoss | Climate Solutions | 2023.06
7 |Electrical connection
400 V
Direktstart YY Teilwicklungsstart Y/YY
1V1 1W11U1
2W12V12U1
L3L2L1 L3L2L1
L3L2L1
1V1 1W11U1
2W12V12U1
Direct start YY PartwindingstartY/YY
Themotoriswiredfordirectstart(YY)atthefactory.ForpartwindingstartY/YY,thebridgesmust
beremovedandthemotorfeedlineconnectedaccordingtothecircuitdiagram:
ATTENTION Failure to do this results in opposed rotary elds and results in
damagetothemotor.Afterthemotorstartsupviapartialwinding
1,partialwinding2mustbeswitchedonafteramaximumdelay
ofonesecond.Failuretocomplycanadverselyaffecttheservice
lifeofthemotor.