BOCK HG66e/1340-4 User manual

BOCK HG66e (HC/LG)
Assembly instructions
96446-11.2022-Gb
Translation of the original instructions
colour the world
of tomorrow
BOCK®
HG(X)66e/1340-4 (S) HG66e/1340-4 (S) HC
HG(X)66e/1540-4 (S) HG66e/1540-4 (S) HC
HG(X)66e/1750-4 (S) HG66e/1750-4 (S) HC
HG(X)66e/2070-4 (S) HG66e/2070-4 (S) HC
HGX66e/1340 ML 31 LG HGX66e/1340 S 37 LG
HGX66e/1540 ML 36 LG HGX66e/1540 S 42 LG
HGX66e/1750 ML 44 LG HGX66e/1750 S 50 LG
HGX66e/2070 ML 50 LG HGX66e/2070 S 60 LG

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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.
Bock GmbH
72636 Frickenhausen
Bock GmbH
Benzstraße 7
72636 Frickenhausen
Germany
Phone [phone]
Fax [phone]
www.bock.de
[email protected]
Manufacturer
Contact
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

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Contents Page
5 AreasofapplicationonHCandLGcompressors 11
5.1 Refrigerants
5.2 Oil charge
5.3 Limits of application
6Compressorassembly 12
6.1 Storage and transport
6.2 Setting up
6.3 Pipe connections
6.4 Pipes
6.5 Start unloader (external)
6.6 Laying suction and pressure lines
6.7 Operating the shut-off valves
6.8 Operating mode of the lockable service connections
 6.9 Suctionpipelterandlterdrier
 7 Electricalconnection 16
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 230 V ∆/ 400 V Y
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
9 Maintenance 31
9.1 Preparation
9.2 Work to be carried out
9.3 Spare parts recommendation
9.4 Lubricants / oil
9.5 Decommissioning
 9.6 Additionalinformationwhenusingammablerefrigerants
 10 Accessories 33
10.1 Capacity regulator
10.2 Oil separator
10.3 Oil level regulator
 11 Technicaldata 36
 12 Dimensionsandconnections 37
 13 Declarationofincorporation 39
14 Service 41

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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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3 |Product description
• Semi-hermetic six-cylinder reciprocating compressor with suction-gas cooled drive motor.
• The stream of refrigerant sucked out of the evaporator flows over the motor and cools it
intensively. In this way, the motor can be kept at a relatively low temperature level, particularly
under high loads.
Fig. 1
3.1 Short description
Dimension and connection values can be found in Chapter 12
Cylinder
cover
Terminal box Suction
shut-off valve
Transport
eyelet
Name plate
Motor section
Drive section
Valve plate
Discharge
shut-off valve
Oil pump
Oil sight glass

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3 |Product description
3.2 Nameplate (example)
3.3 Typekey (example)
IP 65
BB12345-A001
HGX66e/2070-4
/
HG 66 e2070 -4 SX
¹) HG - Hermetic Gas-Cooled (suction gas-cooled) for the normal- / air conditioning applications
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
Numbers of cylinders
Size
Oil charge ²)
Series ¹)
107,0 A YY: 335,0 AY: 196,0 A
180,0
217,2
380-420 Y/YY
440-480 Y/YY
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 e 12 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
}
Fig. 2
Bock GmbH, Benzstr. 7
72636 Frickenhausen, Germany
BOCK
BOCKlub E55

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3 |Product description
/
/
HG
HG
6
6
6
6
e
e
2070-
2070
HC
LG
4
S
S
60
X
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)
HFO refrigerant
Engine performance in hp
Motor variant 3)
Swept volume
e-series
Numbers of cylinders
Size
Oillling²)
Series ¹)

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4 |Areas of application
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.
-Additionalfans(accessories)canbeusedforadditionalcooling.
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.Max.60Hz.
(Formoreonthefrequencyconverter,seechapter7.13,p.27)
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!
4.3 Limitsofapplication
 Thecompressorsarelledatthefactorywiththefollowingoiltype:
- für R134a, R404A/R507, R407C, R407F BOCKlub E55
- für R22 BOCKlub A46
Compressors with ester oil charge (BOCKlub E55) are marked with an X in the type
designation (e.g. HGX66e/2070-4).
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 The oil level must be in the
visiblepartofthesightglass;
damage to the compressor is
possibleifoverfilledorunder-
filled!
Max.
Min.
1,9 Ltr.
Oil level
Fig. 3
~
~

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4 |Areas of application
Maximumadmissibleoperating
pressure(LP/HP)1):19/28bar
Maximumadmissibleoperating
pressure(LP/HP)1):19/32bar
Maximumadmissible
frequency:60Hz
Maximumadmissible
frequency:60Hz
1) LP = Low pressure
HP = High pressure
1) LP = Low pressure
HP = High pressure
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:
-Minimumsuperheating∆tOh=20K(onlyatHCcompressors)
Inordertoguaranteetherequiredminimumsuperheatingof∆tOh
=20K,aninternalheatexchangerIHXmayhavetobeinstalled.
(onlyatHCcompressors)
-Min.pressuregastemperature≥50°C(min.20Kovercondens-
ingtemperature).Suctiongassuperheatingoncompressorent-
ranceshouldbemin.7-10K,mustbeincreasedifnecessary
(onlyatLGcompressors)
-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: BOCKlub G68
• LG compressors: BOCKlub E55
BOCKlub E85 (from tO > 15°C, must be specified in the order)

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6 |Compressor assembly
 Installationofpipevibrationmufersisrecommended!
F
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B
A
1 2
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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
?
INFO New compressors are factory-lled with inert gas. Leave this
servicechargeinthecompressorforaslongaspossibleandpre-
vent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.
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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Fig. 5
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).
Thedischargegasconnectioncanbemovedupwardswithan
adapter(accessory).Thismakesiteasiertoremovethecom-
pressorfromarefrigeratingsystem.
Fig. 4: graduated
internal diameter
Pipe connections on the compressor are available for soldering or
welding (accessories). The dischargeandsuctionlinevalves have
graduated inside diameters so that pipes with standard millimetre and
inch dimensions can be used. The pipe will be immersed more or less
deeply according to dimension.
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.
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.
6.5 Startunloader(external)
A internal start unloader ex factory is not available. Alternatively a start unloader can be installed in
the plant.
Operation:
When the compressor is started, a solenoid valve receives power via a time switch and opens a by-
pass between the discharge- and suction line. At the same time, a non-return valve in the discharge
lineclosesandpreventsabackowofrefrigerantfromthecondenser(Fig.5).
Thecompressorisnowshort-circuitedanddeliversfromtheoutowdirectlyintotheintake.The
pressuredifferentialconsequentlydecreasessubstantially.Asaresult,thetorqueonthedriveshaft
of the compressor is considerably diminished. The drive motor can now start with a low level of
starting torque. Assoon as the motor and the compressorreachtheirrated speed, the solenoid
valve closes and the non-return valve opens (Fig. 6). The compressor now works under normal load.
Solenoid valve actuated
Non-return valve closed

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6 |Compressor assembly
Fig. 6
Rigid
fixedpoint Fig. 7
As short as
possible
6.6 Layingsuctionandpressurelines
Aruleofthumb:Alwayslaytherstpipesectionstartingfromtheshut-offvalvedownwards
andparalleltothedriveshaft.
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.
Important:
- Start unloader may only be employed during the starting phase.
- Check the solenoid valve and the non-return valve regularly for tightness.
- In addition, we recommend to use a heat protection thermostat on the discharge side of the com-
pressor. This protects the compressor against thermal overloading. Connect the heat protection
thermostat in series on the safety chain of the control circuit, to switch off the compressor if
necessary.
- Follow these instructions to avoid thermal overloading.
Solenoid valve dead
Non-return valve open

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6 |Compressor assembly
Fig. 8 Fig. 9
Valvespindleseal
Release
Tighten
Pipe connection
Pipe connection
6.8 Operatingmodeofthelockableserviceconnections
Fig. 10
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.
Fig. 11
Openingtheserviceconnection
Spindle: Turn 1/2- 1 turn clockwise.
—> Service connection opened / shut-off valve opened.
Connection
blocked
Spindle
Spindle Connection
open
Compressor
Compressor
Service connection
closed
Service connection
opened
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.
6.7 Operatingtheshut-offvalves
Before opening or closing the shut-off valve, release the valve spindle seal by approx. 1/4of a turn
counter-clockwise.
After activating the shut-off valve, re-tighten the adjustable valve spindle seal clockwise.

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6 |Compressor assembly
7 |Electrical connection
7.1 Informationforcontactorandmotorcontactorselection
Allprotectiondevicesandswitchingormonitoringunitsmustbettedinaccordancewiththelocal
safetyregulationsandestablishedspecications(e.g.VDE)aswellaswiththemanufacturer’sinfor-
mation. Motorprotectionswitchesarerequired! Motor contactors, feed lines, fuses and motor
protection switches must be rated on the basis of the maximum working current (see name plate).
For motor protection use a current-dependent and time-delayed overload protection device for moni-
toring all three phases. Set the overload protection device so that it must be actuated within 2 hours,
if there is 1.2 times the max. 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
relieves 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.
6.9Suctionpipelterandlterdrier
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.

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Designation on the name plate
Y/YY
7.2 Standardmotor,designfordirectorpartialwindingstart
INFO Amechanicalunloadedstartwithbypasssolenoidvalveis 
notrequired.
7 |Electrical connection
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.
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.
400 V
Direktstart YY Teilwicklungsstart Y/YY
1V1 1W11U1
2W12V12U1
L3L2L1 L3L2L1
L3L2L1
1V1 1W11U1
2W12V12U1
Direct start YY
PartwindingstartY/YY

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Οnderung
2
0
Datum Name
Datum
Bearb.
Gepr.
Norm
1
20.02.2009
bauknecht
03.11.2020
Urspr.
2
Ers. f.
3
Ers. d.
4
PW INT69 HG44/66
567
BOCK COMPRESSORS
8
=
+
9
Bl.
6.d Bl.
3
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
2.8
3.8
6.c.8
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
7.3 Basiccircuitdiagramforpartwindingstartwithstandardmotor
Fig. 12
50% 50%
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 (accessory)
EB1 Oil sump heater
EC1 Compressor motor
Compressor terminal box

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Οnderung
2
0
Datum Name
Datum
Bearb.
Gepr.
Norm
1
20.02.2009
bauknecht
03.11.2020
Urspr.
2
Ers. f.
3
Ers. d.
4
PW INT69 HG44/66
567
BOCK COMPRESSORS
8
=
+
9
Bl.
6.d Bl.
3
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
2.8
3.8
6.c.8
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 switch over
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.

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7 |Electrical connection
5.4Specialmotor:designfordirectorstar-deltastart
Amechanicalunloadedstartwithbypasssolenoidvalveisrequiredforthestar-deltastart.
Designation on the name plate
∆/Y