GEA Bock HG8 Series User manual

GEA Bock HG8
Assembly instructions
09790-02.2018-Gb
Translation of the original instructions
HG8/2470-4 HG8/2470-4 S HGX8/2470-4 HGX8/2470-4 S
HG8/2830-4 HG8/2830-4 S HGX8/2830-4 HGX8/2830-4 S
HG8/3220-4 HG8/3220-4 S HGX8/3220-4 HGX8/3220-4 S

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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.
GEA Bock GmbH
72636 Frickenhausen
GEA Bock GmbH
Benzstraße 7
72636 Frickenhausen
Germany
Telephone [phone]
Fax [phone]
[email protected]
www.gea.com
Manufacturer
Contact

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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 Product description 6
2.1 Short description
2.2 Name plate
2.3 Type key
3 Areas of application 8
3.1 Refrigerants
3.2 Oil charge
3.3 Limits of application
4Compressor assembly 10
4.1 Storage and transportation
4.2 Setting up
4.3 Pipe connections
4.4 Pipes
4.5 Laying suction and pressure lines
4.6 Operating the shut-off valves
4.7 Operating mode of the lockable service connections
5 Electrical connection 14
5.1 Information for contactor and motor contactor selection
5.2 Standard motor, design for direct or partial winding start
5.3 Basic circuit diagram for partial winding start with standard motor
5.4 Special motor: design for direct or star-delta start
5.5 Circuit diagram for star-delta start 230 V ∆/ 400 V Y
5.6 Electronic trigger unit MP10
5.7 Connecting the trigger unit MP10
5.8 Functional test of the trigger unit MP10
5.9 Oil sump heater (accessories)
6 Commissioning 25
6.1 Preparations for start-up
6.2 Pressure strength test
6.3 Leak test
6.4 Evacuation
6.5 Refrigerant charge
6.6 Start-up
6.7 Avoid slugging
6.8 Connection of oil level regulator
7 Maintenance 28
7.1 Preparation
7.2 Work to be carried out
7.3 Spare parts recommendation
7.4 Extract from the lubricants table
7.5 Decommissioning
8 Accessories 30
8.1 Start unloader (kit-Item No. 08981)
8.2 Intermediate adapter for discharge line valve (Ref.-No. 04362)
8.3 Additional fan (Item No. 80270)
8.4 Capacity controller (Item No. 08821)
9 Technical data 32
10 Dimensions and connections 33
11 Declaration of installation 35
12 Service 36

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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 man-
ufactured by GEA. GEA 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|Product description
• Semi-hermetic eight-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.
Name plate
Fig. 1
2.1 Short description
Valve plate
Cylinder cover
Terminal box
Dimension and connection values can be found in Chapter 10
Transport eyelet
Discharge
shut-off
valve
Oil pump
Suction shut-
off valve
Drive section
Motor section
Oil sight glass

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2|Product description
/
HG 83220-4 X
Fig. 2
2.2 Name plate (example)
2.3 Type key (example)
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)
3) S - More powerful motor, e.g. for air-conditioning applications
Motor variant 3)
Number of poles
Swept volume
Size
Oil charge ²)
Series ¹)
S
50 Hz
}
60 Hz
}
Observe the limits of application
diagrams!
1 Type designation
2 Machine number
3 Type code
4 Maximum operating current
5 Starting current (rotor blocked)
Y: Part winding 1
YY: Part windings 1 and 2
6 ND (LP): max. admissible operating
pressur e (g) Low pressure side
HD (HP): max. admissible operating
pressur e(g) High pressure side
7 Voltage,circuit,frequency
8 Nominal rotation speed
9 Displacement
10 Voltage,circuit,frequency
11 Nominal rotation speed
12 Displacement
13 Oiltypelledatthefactory
14 Terminal box protection type
Electrical accessories can change
the IP protection class!
SE 55
AS12345-A018
HGX8/3220-4
GEA Bock GmbH
72636 Frickenhausen, Germany
AW09529A047
2
1
3
4
5
7
8
9
10
11
12
13
14
6Oil
Y/YY
Y/YY

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3|Areas of application
 Thecompressorsarelledatthefactorywiththefollowingoiltype:
- for R134a, R404A/R507, R407C FUCHS Reniso Triton SE 55
- for R22 FUCHS Reniso SP 46
Compressors with ester oil charge (FUCHS Reniso Triton SE 55) are marked with an X in the type
designation (e.g. HGX8/3220-4).
3.1 Refrigerants
• HFKW / HFC: R134a, R404A/R507, R407C
• (H)FCKW / (H)CFC: R22
3.2 Oil charge
INFO For refilling, we recommend the above oil types.
Alternatives: see lubricants table, Chapter 7.4.
ATTENTION The correct oil level is shown
in figure 3.
Damage to the compressor
is possible if overfilled or
underfilled!
max.
min.
3,0 Ltr.
oil level
Fig. 3
~
~
ATTENTION Compressor operation is possible within the operating limits
showninthediagrams.Pleasenotethesignicance
of the shaded areas. Thresholds should not be selected as
design or continuous operation points.
- 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) or water-cooled cylinder covers
(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.
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!
3.3 Limits of application

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R134a
R407C
R404A/R507
R22
Fig. 4
Fig. 5
Fig. 6
Fig. 7
HGX8/2830-4
max. evaporating temperature
t0 = 0 °C
HGX8/2470-4 - HGX8/2830-4 -
HGX8/3220-4
max. evaporating temperature
t0 = 0 °C
HG8/2830-4
max. evaporating temperature t0 = 0 °C
HG8/2470-4 S
in the evaporation range of
t0 = 7 °C TO 12,5 °C
limited condensing temperature up to
tC = 55 °C
HG8/3220-4 S
max. evaporating temperature t0 = 5 °C
Unlimited application range
Supplementary cooling or
reduced suction gas temperature
Supplementary cooling and
reduced suction gas temperature
Motor version S
(more powerful motor)
Evaporation temperature (°C)
Condensing temperature (°C)
Suction gas superheat (K)
Suction gas temperature (°C)
Design for other
areasonrequest
Maximum admissible
operating pressure (g)
High pressure side (LP/HP):
19/28 bar
1) LP = Low pressure
HP = High pressure

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Fig. 13
 Installationofpipevibrationmufersisrecommended!
4|Compressor assembly
 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.
Always use anti-vibration pads when mounting on bundle pipe
condensers.
 Provideadequateclearanceformaintenancework.
 Ensureadequatecompressorventilation.
Do not use in a corrosive, dusty, damp atmosphere or a
combustible environment.
Fig. 10
Fig. 11
Fig. 12
F
E
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C
B
A
1 2
3
4
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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
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.
?
4.1 Storage and transportation
Use transport eyelet.
 Donotliftmanually!
 Useliftinggear!
Storage at (-30 °C) - (+70 °C), maximum permissible relative humid-
ity 10 % - 95 %, no condensation.
Do not store in a corrosive, dusty, vaporous atmosphere or in a com-
bustible environment.
Fig. 9
Fig. 8
4.2 Setting up
ATTENTION Fittings (e.g. pipe holders, additional units, mounting parts etc.) on
the compressor are not permissible!

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4.3 Pipe connections
4|Compressor assembly
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. 14: 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.
4.4 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.

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4|Compressor assembly
Rigid
fixed point
As short as
possible
4.5 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.
Fig. 15

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4|Compressor assembly
Fig. 16 Fig. 17
Valve spindle seal
Release
Tighten
Pipe connection
Pipe connection
4.7 Operating mode of the lockable service connections
Fig. 18
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. 19
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 connec-
tion closed
Service connec-
tion opened
4.6 Operating the shut-off valves
Before opening or closing the shut-off valve, release the valve spindle seal by approx. 1/4 of a
turn counter-clockwise.
After activating the shut-off valve, re-tighten the adjustable valve spindle seal clockwise.
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.

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5|Electrical connection
5.1 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ca-
tions. Motorprotectionswitchisrequired! Motor contactors, feed lines, fuses and motor protection
switches must be rated according to the maximum operating current (see name plate).
Use the following overload protection device:
A current-dependent time-delayed overload protection device for monitoring of all three phases, not
set higher than the rated current of the machine, which must respond at 1.2 times the set current
within 2 hours and must not have responded at 1.05 times the set current within 2 hours, or another
comparable device.
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!
5 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.

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5|Electrical connection
5.2 Standard motor, design for direct or partial winding 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:
400 V
Direct start Part winding start
Serienmotor
Ausführung für Direkt- oder Teilwicklungsstart
Verdichter mit dieser Kennzeichnung ist für Direkt-
oder Teilwicklungsstart (PW-Anlauf) geeignet.
Der Motor ist in zwei Teilwicklungen unterteilt: Teil-
wicklung1=60%undTeilwicklung2=40%. Dadurch
wirdbeimTeilwicklungsstartderAnlaufstromumca.
35% gegenüber dem Direktstart verringert.
Für den Teilwicklungsstart (PW-Anlauf) ist die Verwendung einer mechanischen
Anlaufentlastung mit Bypass-Magnetventil nicht erforderlich.
Im Bedarfsfall kann der Anlaufstrom beim PW-Anlauf zusätzlich um bis zu 10% durch
Verwendung einer mechanischenAnlaufentlastung (Zubehör) verringert werden.
Werkseitig ist der Motor für Direktstart geschaltet.
Für den Teilwicklungsstart sind die Brücken
zu entfernen und die Motorzuleitung gemäß
Schaltschema anzuschließen:
WARNUNG! Nichtbeachten führt zu
gegenläufigenDrehfeldernundhatMotor-
schaden zur Folge. Nach Anlauf des
Motors über Teilwicklung 1 muß nach
maximaleinerSekundeVerzögerungszeit
Teilwicklung 2 dazugeschaltet werden.
Nichtbeachten kann die Lebensdauer
des Motors beeinträchtigen.
Sondermotor
Ausführung für Direkt- oder Y/∆-Anlauf
VerdichtermitdieserKennzeichnungistbeiniederer
Spannung für Stern-Dreieck-Anlauf geeignet.
Bei Y/∆-Anlauf ist eine Anlaufentlastung
mit Bypass-Magnetventil erforderlich.
Werkseitig ist der Motor für den Direktstart bei
höherer Spannung geschaltet. Für den Stern-
Dreieck-Anlauf bei niederer Spannung sind die
Brücken zu entfernen.
∆/YYY
Typschildangabe GelberAufkleber
am Klemmenkasten
Klemmbrettanschlüsse
für Direktstart:
mit Brücken
Klemmbrettanschlüsse
für Teilwicklungsstart:
ohne Brücken
Typschildangabe
∆/Y
GelberAufkleber
am Klemmenkasten
Serienmotor
Ausführung für Direkt- oder Teilwicklungsstart
Verdichter mit dieser Kennzeichnung ist für Direkt-
oder Teilwicklungsstart (PW-Anlauf) geeignet.
Der Motor ist in zwei Teilwicklungen unterteilt: Teil-
wicklung1=60%undTeilwicklung2=40%. Dadurch
wirdbeimTeilwicklungsstartderAnlaufstromumca.
35% gegenüber dem Direktstart verringert.
Für den Teilwicklungsstart (PW-Anlauf) ist die Verwendung einer mechanischen
Anlaufentlastung mit Bypass-Magnetventil nicht erforderlich.
Im Bedarfsfall kann der Anlaufstrom beim PW-Anlauf zusätzlich um bis zu 10% durch
Verwendung einer mechanischenAnlaufentlastung (Zubehör) verringert werden.
Werkseitig ist der Motor für Direktstart geschaltet.
Für den Teilwicklungsstart sind die Brücken
zu entfernen und die Motorzuleitung gemäß
Schaltschema anzuschließen:
WARNUNG! Nichtbeachten führt zu
gegenläufigenDrehfeldernundhatMotor-
schaden zur Folge. Nach Anlauf des
Motors über Teilwicklung 1 muß nach
maximaleinerSekundeVerzögerungszeit
Teilwicklung 2 dazugeschaltet werden.
Nichtbeachten kann die Lebensdauer
des Motors beeinträchtigen.
Sondermotor
Ausführung für Direkt- oder Y/∆-Anlauf
VerdichtermitdieserKennzeichnungistbeiniederer
Spannung für Stern-Dreieck-Anlauf geeignet.
Bei Y/∆-Anlauf ist eine Anlaufentlastung
mit Bypass-Magnetventil erforderlich.
Werkseitig ist der Motor für den Direktstart bei
höherer Spannung geschaltet. Für den Stern-
Dreieck-Anlauf bei niederer Spannung sind die
Brücken zu entfernen.
∆/YYY
Typschildangabe GelberAufkleber
am Klemmenkasten
Klemmbrettanschlüsse
für Direktstart:
mit Brücken
Klemmbrettanschlüsse
für Teilwicklungsstart:
ohne Brücken
Typschildangabe
∆/Y
GelberAufkleber
am Klemmenkasten
INFO A mechanical unloaded start with bypass solenoid valve is
notrequired.
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.
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.
Designation on the name plate Sticker on the terminal box
Y/YY
Y/YY

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5.3 Basic circuit diagram for part winding start with standard motor
Fig. 20
15-16 Connections for PTC sensor (MP10)
R1 Cold conductor (PTC sensor) motor winding
R2 Thermal protection thermostat (PTC sensor)
F1.1 Motor protection switch
F1.2 Motor protection switch
F2 Control power circuit fuse
F3 High pressure safety monitor
F4 Safety chain (high/low pressure monitoring)
F5 Oil differential pressure monitor
P - oil
Οnderung
0
Datum Name
Datum
Bearb.
Gepr.
Norm
1
20.02.2009
Kelich
10.02.2012
Urspr.
2
Ers. f.
3
Ers. d.
4
PW MP10
5 6 7
BOCK COMPRESSORS
8
=
+
9
Bl.
4Bl.
2
1
X SS
Anschlußkasten Verdichter
R1
MP10
F5
P-Öl
Q1
L1 L2 L3 N PE
F1.1
I=66% I> I>
I>
1
2
K1
1
3
4
2
5
6
3
1U1
1V1
1W1
PE
M1
M
/YYY
2U1
2V1
2W1
F1.2
I=33% I> I>
I>
1
2
K2
4
3
4
5
5
6
6
X1 L1 L1 N N 43 43 11 12 14
L S M
X2123456
7
F1.1
F1.2
8
R2.1
F2
4A
S1
R2.2
9
R2.3
10
R2.4
11
K1
12
T2
13
N
14
L
15
M
16
S
F3
P>
17 18 19
K1
F4
P
20
K1
K1T
K2
2.8
3.7
4.8
21 22
K1T
2.8
B1
P<
23 24
K1
25
E1
26
L1.1
L2.1
L3.1
L1.2
N
PE
Compressor terminal box

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Οnderung
0
Datum Name
Datum
Bearb.
Gepr.
Norm
1
20.02.2009
Kelich
10.02.2012
Urspr.
2
Ers. f.
3
Ers. d.
4
PW MP10
5 6 7
BOCK COMPRESSORS
8
=
+
9
Bl.
4Bl.
2
1
X SS
Anschlußkasten Verdichter
R1
MP10
F5
P-Öl
Q1
L1 L2 L3 N PE
F1.1
I=66% I> I>
I>
1
2
K1
1
3
4
2
5
6
3
1U1
1V1
1W1
PE
M1
M
/YYY
2U1
2V1
2W1
F1.2
I=33% I> I>
I>
1
2
K2
4
3
4
5
5
6
6
X1 L1 L1 N N 43 43 11 12 14
L S M
X2123456
7
F1.1
F1.2
8
R2.1
F2
4A
S1
R2.2
9
R2.3
10
R2.4
11
K1
12
T2
13
N
14
L
15
M
16
S
F3
P>
17 18 19
K1
F4
P
20
K1
K1T
K2
2.8
3.7
4.8
21 22
K1T
2.8
B1
P<
23 24
K1
25
E1
26
L1.1
L2.1
L3.1
L1.2
N
PE
B1 Release switch (thermostat)
Q1 Main switch
M1 Compressor motor
K1 Mains contactor (part winding 1)
K2 Mains contactor (part winding 2)
K1T Delay relay max. 1s
E1 Oil sump heater
S1 Control voltage switch
XSS Terminal strip in the external switch cabinet

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5.4 Special motor: design for direct or star-delta start
Amechanicalunloadedstartwithbypasssolenoidvalve(accessories)isrequiredforthe
star-delta start.
Designation on the name plate Sticker on the terminal box
∆/ Y
5.4 Sondermotor: Ausführung für Direkt- oder Stern-Dreieck-Anlauf
Für den Stern-Dreieck-Anlauf ist eine mechanische Anlaufentlastung mit Bypass-Magnetventil
(Zubehör) erforderlich.
Bezeichnung auf dem Typschild Aufkleber auf Klemmenkasten
∆/ Y
Stern-Dreieck-Anlauf ist nur im Spannungsbereich ∆(230 V) möglich. Beispiel:
230 V ∆
Direktstart Stern-Dreieck-Start
L3L1
V1 W1
U1
V2
U2
W2
L1 L2 L3
L2
V1 W1
U1
V2
U2
W2
L3L2L1
400 V Y
nur Direktstart
V1 W1U1
V2U2W2
L1 L2 L3
5|Electrical connection

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09790-02.2018-DGbFEIRu
In the factory the motor is wired for direct starting at high voltage.
The brides are to be removed for star delta starting at low voltage.
230 V Δ
Direct start Star-delta-start
400 V Y
Direct start only
5|Electrical connection
Star-delta start-up is only possible for ∆ (230 V) power supply. Example:

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5.5 Circuit diagram for star-delta start 230 V ∆/ 400 V Y
Fig. 21
15-16 Connections for PTC sensor (MP10)
R1 Cold conductor (PTC sensor) motor winding
R2 Thermal protection thermostat (PTC sensor)
F1.1 Motor protection switch
F1.2 Motor protection switch
F2 Control power circuit fuse
F3 High pressure safety monitor
F4 Safety chain (high/low pressure monitoring)
F5 Oil differential pressure monitor
B1 Enabling switch (thermostat)
Οnderung
2
0
Datum Name
Datum
Bearb.
Gepr.
Norm
1
20.02.2009
Kelich
10.02.2012
Urspr.
2
Ers. f.
3
Ers. d.
4
PW MP10
5 6 7
BOCK COMPRESSORS
8
=
+
9
Bl.
4 Bl.
4
3
X SS
Anschlußkasten Verdichter
R2 MP10
F5
P-Öl
Q1
L1 L2 L3 N PE
F1.1
I=66%
I> I> I>
1
2
K1
1
3
4
2
5
6
3
U1
V1
W1
M1
M
3˜
1
2
K3
Y
PE
3
4
5
6
W2
U2
V2
F1.2
I=33%
I> I> I>
1
2
K2
4
3
4
5
5
6
6
X1 L1 L1 N N 43 43 11 12 14
L S M
X2123456
7
F1.1
F1.2
8
R2.1
F2
4A
S1
R2.2
9
R2.3
10
R2.4
11
K1
12
T2
13
N
14
L
15
M
16
S
F3
P>
17
K1
K1
4.7
18
K3
19
F4
P
K4T
K3
K2
1.8
2.8
4.8
20
K4T
K2
K3
4.8
21 22
K4T
B1
P<
23 24
K1
25
E1
26
L1.1
L2.1
L3.1
L1.2
N
PE
R1
Compressor terminal box