BOCK UL-HGX44e User manual

Reciprocating Compressor
BOCK UL-HGX44e/UL-HGX56e
Assembly instructions
96547-10.2021-Us
(Translation of the original instructions)
UL-HGX44e/475 ML 9
UL-HGX44e/475 S 12
UL-HGX44e/565 ML 12
UL-HGX44e/565 S 15
UL-HGX44e/665 ML 14
UL-HGX44e/665 S 20
UL-HGX44e/770 ML 15
UL-HGX44e/770 S 22
colour the world
of tomorrow
BOCK®
UL-HGX56e/850 ML 18
UL-HGX56e/850 S 25
UL-HGX56e/995 ML 23
UL-HGX56e/995 S 30
UL-HGX56e/1155 ML 28
UL-HGX56e/1155 S 35
Bock GmbH, Benzstr. 7, 72636 Frickenhausen, Germany
Phone: [phone], Fax: [phone]
www.bock.de, [email protected]

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Foreword
Bock GmbH
Benzstr. 7
72636 Frickenhausen
Germany
Phone [phone]
Fax [phone]
www.bock.de
[email protected]
Manufacturer and contact
Risk of accidents.
Refrigerating compressors are pressurized machines and as such call for heightened caution
and care in handling.
Improper assembly and use of the compressor can result in serious or fatal injury!
- To avoid serious injury or death, observe all safety instructions contained in these instructions
before assembly and before using the compressor! This will avoid misunderstandings and
prevent serious or fatal injury and damage!
- Never use the product improperly but only as recommended by this manual!
- Observe all product safety labels!
- Refer to local building codes for installation requirements!
Unauthorized changes and modications to the product not covered by this manual are prohibited and
will void the warranty!
This instruction manual is a mandatory part of the product. It must be available to the personnel who
operate and maintain this product. It must be passed onto the end customer along with the unit in
which the compressor is installed.
This document is subject to the copyright of BOCK GmbH, Germany. The information provided in this
manual is subject to change and improvements without notice.
Contents Page
1 Safety ............................................................................................................................... 4
1.1 Identication of safety instructions .................................................................................... 4
1.2 General safety instructions ................................................................................................ 4
1.3 Intended use ...................................................................................................................... 5
1.4 Qualications required of personnel................................................................................... 5
2 Product description......................................................................................................... 6
2.1 Short description ............................................................................................................... 6
2.2 Name plate (example) ........................................................................................................ 7
2.3 Type key (example) ............................................................................................................ 7
3 Areas of application ........................................................................................................ 8
3.1 Refrigerants....................................................................................................................... 8
3.2 Oil charge .......................................................................................................................... 8
3.3 Limits of application........................................................................................................... 9

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Contents Page
4 Compressor assembly................................................................................................... 10
4.1 Storage and transport ...................................................................................................... 10
4.2 Setting up ........................................................................................................................ 10
4.3 Pipe connections.............................................................................................................. 11
4.4 Pipes................................................................................................................................ 11
4.5 Laying suction and pressure lines.................................................................................... 11
4.6 Operating the shut-off valves........................................................................................... 12
4.7 Operating mode of the lockable service connections ....................................................... 13
4.8 Suction pipe lter and lter drier...................................................................................... 13
5 Electrical connection .................................................................................................... 14
5.1 General safety.................................................................................................................. 14
5.2 Information for contactor and motor contactor selection.................................................. 14
5.3 Standard motor design for direct or part winding start..................................................... 14
5.4 Basic circuit diagramm for part winding start with standard motor.................................. 16
5.5 Special motor: design for direct or star-delta start........................................................... 18
5.6 Basic circuit diagramm for star-delta start with special motor......................................... 20
5.7 Electronic trigger unit INT69 G.........................................................................................22
5.8 Connection of the trigger unit INT69 G............................................................................. 22
5.9 Function test of the trigger unit INT69 G .......................................................................... 23
5.10 Oil sump heater (accessories) .......................................................................................... 23
6 Commissioning .............................................................................................................. 24
6.1 Preparations for start-up.................................................................................................. 24
6.2 Pressure integrity test...................................................................................................... 24
6.3 Leak test.......................................................................................................................... 24
6.4 Evacuation ....................................................................................................................... 24
6.5 Refrigerant charge........................................................................................................... 25
6.6 Start-up........................................................................................................................... 25
6.7 Avoiding slugging............................................................................................................. 25
7 Maintenance ..................................................................................................................26
7.1 Preparation ...................................................................................................................... 26
7.2 Work to be carried out ..................................................................................................... 26
7.3 Spare parts recommendation/accessories .......................................................................26
7.4 Lubricants / oils ............................................................................................................... 26
7.5 Decommissioning ............................................................................................................ 26
8 Technical data................................................................................................................28
9 Dimensions and connections .......................................................................................30
10 Declaration of incorporation.........................................................................................32
11 UL-CerticateofCompliance........................................................................................33
12 Service ...........................................................................................................................34

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1|Safety
Indicates a dangerous situation which, if not avoided, will cause
immediate fatal or serious injury.
Indicates a dangerous situation which, if not avoided, may cause
fatal or serious injury.
Indicates a dangerous situation which, if not avoided, may cause
fairly severe or minor injury.
Indicates a situation which, if not avoided, may cause
property damage.
Important information or tips on simplifying work.
1.2 General safety instructions
Risk of accidents.
Refrigerating compressors are pressurized 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 (140°F) on the discharge side or below 0°C (32°F) on
the suction side can be reached.
- Contact with refrigerant must be avoided.
Contact with refrigerant can cause severe burns and skin
damage.
1.1 Identicationofsafetyinstructions

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1|Safety
1.4 Qualicationsrequiredofpersonnel
Inadequatelyqualiedpersonnelposes theriskofaccidents,the
consequence being serious or fatal injury. Work on compressors
isthereforereservedforpersonnelwhoarequaliedtoworkon
pressurized refrigerant systems:
• For example, a refrigeration technician, refrigeration mechatronic
engineer. As well as professions with comparable training that 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 recognizing any potential dangers.
1.3 Intended use
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 ma-
chine (within the EU according to the EU Directives 2006/42/EC Machinery Directive, 2014/68/
EU Pressure Equipment Directive, outside the EU according to the respective national regulations
and guidelines).
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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• UL-HGX44e: Semi-hermetic four-cylinder reciprocating compressor with suction-gas cooled drive
motor.
• UL-HGX56e: Semi-hermetic six-cylinder reciprocating compressor with suction-gas cooled drive
motor.
• Preferred application range: normal refrigerating and air-conditioning.
• 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.
2|Product description
Name plate
Fig. 1
2.1 Short description
Valve plate Cylinder
cover
Dimension and connection values can be found in Chapter 9
Transport eyelet
Discharge
shut-off valve
Oil pump
Suction
shut-off valve
Oil sight glass
Drive section
Motor section
Fig. 2
UL-HGX44e
UL-HGX56e
Terminal box

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2| Product description
2.3 Type key (example)
SE 55IP 65
BB12345-A001
107,0 A
YY: 174 AY: 196,
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 LP: Max. admissible operating pressur e12 Oil type lled at the factory
(g) Low pressure side 13 Terminal box protection type
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. 3
Bock GmbH, Benzstr. 7
72636 Frickenhausen, Germany
BOCK
2.2 Name plate (example)
/
HGUL- 4 e 770 S 22X
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
Engine performance in HP
Motor variant 3)
Swept volume
e-series
Numbers of cylinders
Size
Oil lling ²)
Series ¹)
Identication UL compressor
4
35,0 A
101 A
BOCK lub E55
: BB12345A001
: UL-HGX44e/770 S 22
thermally protected system
2365 cfh
2838 cfh
Oil: BOCK lub E55
Type
No
LP/HP = 276/406 psig

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For refilling, we recommend the above oil types.
Alternatives: see chapter 7.4
3 |Areas of application
3.1 Refrigerants
3.2 Oil charge
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
67 fl.ozl
Oil level
Fig. 4
~
~
More informations about approved refrigerants on Bock compressor selection tool VAP (vap.bock.de).
HFC + blends R134a, R404A/R507
HFC/HFO blends R448A, R449A, R450A, R513A
The compressors are lled at the factory with the following oil type: BOCK lub E55

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3 |Areas of application
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 (-4°F...140°F)
- Max. permissible discharge end temperature 140°C (284°F).
- 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.
- The suction gas superheat temperature may need to be reduced
or set individually when operating near to the threshold.
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
Maximum admissible operating pressure (LP/HP)1):
19/28 bar (276/406 psig)
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.
4 |Compressor assembly
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
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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
4.2 Setting up
?
4.1 Storage and transport
Use transport eyelet.
Do not lift manually!
Use lifting gear!
Storage at (-30°C) - (+70°C), (-22 °F) - (158 °F), maximum permis-
sible 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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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.
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
4.3 Pipe connections
4 |Compressor assembly
4.5 Laying suction and pressure lines
Improperly installed pipes can cause cracks and tears, the result
being a loss of refrigerant.
Proper layout of the suction and discharge lines directly after
the compressor is integral to the system’s smooth running and
vibration behavior.
Damage possible.
Do not solder as long as the compressor is under pressure.
Superheating can damage the valve. Remove the pipe supports
therefore from the valve for soldering and accordingly cool the
valve body during and after soldering.
Only solder using inert gas to inhibit oxidation products (scale).

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Fig. 6
As short as
possible
Rigid
fixed point
4 |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. 81194.
With this intermediate ange it is possible to lay the pressure line directly from
the valve to the left or right.
4.6 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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4 |Compressor assembly
Pipe connection
Pipe connection
4.7 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.
4.8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.
A mechanical unloaded start with bypass solenoid valve is
not required.
5 |Electrical connection
5.2 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.
5.1 General safety
5.3 Standard motor, design for direct or part winding start
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.
Risk of electric shock! High voltage!
Only carry out work when the electrical system is disconnected
from the power supply!
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
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:
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.

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5.4 Basic circuit diagram for part winding start with standard motor
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
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

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5 |Electrical connection
5.5 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

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5 |Electrical connection
Star-delta start-up is only possible for 230 V power supply. Example:
230 V ∆
Direct start Star-delta start
400 V Y
Direct start only
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
5.4 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
5.4 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

20
D
US
F
E
96547-10.2021-Us
Οnderung
4
0
Datum Name
Datum
Bearb.
Gepr.
Norm
1
20.02.2009
bauknecht
03.11.2020
Urspr.
2
Ers. f.
3
Ers. d.
4
D/S INT69 HG44/66 neu
567
BOCK COMPRESSORS
8
=
+
9
Bl.
6.d Bl.
6.b
6.a
Anschlußkasten Verdichter
BT1
INT69G
DELTA- P II
QA1
L1 L2 L3 N PE
U1
V1
W1
PE
U2
V2
W2
FC1.1
FC1.2
FC2
SF1
BP2
P>
BP3
P
QA2
L1.1
L2.1
L3.1
L1.2
N
PE
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 pk og
Θ
EB1
FC1.1
I> I> I>
1
2
QA2
FC1.2
I> I> I>
3
4
5
6
1
2
QA4
Y
3
4
5
6
1
2
QA3
D
3
4
5
6
EC1
M
3˜
QA2
QA2
QA4 KF1
QA4
QA3
KF1
QA3
QA4 KF1
20
21
BT3
Θ
Fig. 12
5.6 Basic circuit diagram for star-delta start with special motor
Compressor terminal box
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 PII Oil differential pressure sensor DELTA-P II (accessorie)
EB1 Oil sump heater
EC1 Compressor motor