Danfoss Bock Hgz7 Semi Hermetic Compressor Installation Guide (+ PDF)

Contents hide

1 BOCK HGZ7 Semi Hermetic Compressor

2 Product Information:

2.1 Compatible Refrigerants:

2.2 Intended Use:

2.3 Important Safety Instructions:

2.4 Qualifications Required:

3 Product Usage Instructions:

3.1 Documents / Resources

3.1.1 References

BOCK HGZ7 Semi Hermetic Compressor

Product Information:

The BOCK B7o26ck36GFmribcHke compressor is a refrigerating
compressor manufactured by Bock. It is designed for installation in
a machine and is compliant with the EU Directives 2006/42/EC
Machinery Directive and 2014/68/EU Pressure Equipment Directive.
The compressor is intended for use in refrigeration systems within
the specified limits of application.

Compatible Refrigerants:

R404A/R507
R410A
R448A/R449A
R22

Intended Use:

The compressor should only be used in refrigeration systems and
must be installed in accordance with the provided assembly
instructions. The entire system, including the compressor, should
be inspected and approved in accordance with legal regulations
before commissioning.

Important Safety Instructions:

DANGER: Indicates a dangerous situation that
can cause immediate fatal or serious injury.
WARNING: Indicates a dangerous situation that
can cause fatal or serious injury.
CAUTION: Indicates a dangerous situation that
can cause fairly severe or minor injury.
ATTENTION: Indicates a situation that can
cause property damage.
INFO: Provides important information or tips
on simplifying work.

Qualifications Required:

Work on compressors should only be performed by personnel who
are qualified to work on pressurized refrigerant systems. This
includes engineers and professionals with comparable training who
are capable of assessing the work and recognizing potential
dangers.

Product Usage Instructions:

1. Before assembly and use, read the provided instructions
carefully to avoid misunderstandings and prevent damage.

2. Ensure that the compressor is not used in potentially
explosive environments.

3. The compressor should only be used in refrigeration systems
within the specified limits of application.

4. Use only the refrigerant specified in the instructions. Using
any other refrigerant is prohibited.

5. Follow the provided assembly instructions to install the
compressor in a machine.

6. Before commissioning, ensure that the entire system,
including the compressor, has been inspected and approved according
to legal regulations.

7. Take extra caution when handling refrigerating compressors as
they are pressurized machines. Avoid exceeding the maximum
permissible overpressure, even for testing purposes.

8. Regularly maintain and repair the refrigeration and
air-conditioning systems as required by qualified personnel.

9. Pass these instructions onto the end customer along with the
unit in which the compressor is installed.

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BOCK B7o26ck36GFmribcHke, nBheanuzssetrn. ,7Germany

BOCK® HGZ7
Operating guide

HGZX7/1620-4 R404A/R507 HGZX7/1860-4 R404A/R507 HGZX7/2110-4 R404A/R507

HGZX7/1620-4 R410A HGZX7/1860-4 R410A HGZX7/2110-4 R410A

HGZX7/1620-4 R448A/R449A HGZX7/1860-4 R448A/R449A HGZX7/2110-4 R448A/R449A

HGZ7/1620-4 R22 HGZ7/1860-4 R22 HGZ7/2110-4 R22

Translation of the original instructions

AQ451736787778en-000201

About these instructions
Read these instructions before assembly and before using the compressor. This will avoid misunderstandings 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 compressor is installed.
D GB F E

2 | AQ451736787778en-000201

Contents
1 Safety 1.1 Identification of safety instructions 1.2 Qualifications required of personnel 1.3 General safety instructions 1.4 Intended use 2 Product description 2.1 Short description standard design 2.2 ain and functional parts 2.3 Short description optional design 2.4 Name plate 2.5 Type key 3 Areas of application 3.1 Refrigerants 3.2 Oil charge 3.3 Limits of application 3.4 Subcooling temperature 4 Description of functions 4.1 Two-stage refrigeration circuit with liquid subcooler 5 Compressor assembly 5.1 Storage and transportation 5.2 Setting up 5.3 Installation of the liquid subcooler system (optional design) 5.4 Installation example, liquid subcooler with accessories 5.5 Factory-installed liquid subcooler system (optional design) 5.6 Pipe connections 5.7 Pipes 5.8 Laying suction ans pressure lines 5.9 Operating the shut-off valves 5.10 Operating mode of the lockable service connections 6 Electrical connection 6.1 Information for contactor and motor contactor selection 6.2 Circuit diagram for part-winding start 6.3 Standard motor, design for direct or partial winding start 6.4 Electronic trigger unit MP10 6.5 Connecting the trigger unit MP10 6.6 Functional test of the trigger unit MP10 6.7 Oil sump heater (accessories) 7 Commissioning 7.1 Preparations for start-up 7.2 Pressure strengh test 7.3 Leak test 7.4 Evacuation 7.5 Refrigerant charge 7.6 Start-up 7.7 Avoid slugging 8 Maintenance 8.1 Preparation 8.2 Work to be carried out 8.3 Spare parts recommendation/accessories 8.4 Replacing the valve plates 8.5 Lubicants / oil 8.6 Decommissioning 9 Technical data 10 Dimensions and connections 11 Declaration of incorporation
© Danfoss | Climate Solutions | 2023.07

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AQ451736787778en-000201| 3

1| Safety

1.1 Identification of safety instructions:

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.

1.2 Qualifications required of personnel

WARNING Inadequately qualified personnel poses the risk of accidents, the

consequence being serious or fatal injury. Work on compressors

is therefore reserved for personnel which is qualified 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.

4 | AQ451736787778en-000201

1| Safety

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.

1.4 Intended use

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 specified in these instructions may be used.

Any other use of the compressor is prohibited!

AQ451736787778en-000201| 5

2| Product description
2.1 Short description standard version
Semi-hermetic, two-stage, six cylinder reciprocating compressor with suction-gascooled drive motor. Stages divided into LP / HP at the ratio of 2 : 1 Compressor with intermediate pressure shut-off mounted and insulated.

Intermediate pressure chamber
Oil pump Charge plug D Oil drain plug GB F E

BOCK B7o26ck36GFmribcHke, nBheanuzssetrn. ,7Germany
Fig. 1

Terminal box Notice
CE certification for piping (only for
HGZ7/2110-4)
Name plate Oil sight glasses
Suction shut-off valve

Valve plate
Discharge shut-off valve

Intermediate pressure line

Fig. 2 Dimension and connection values can be found in Chapter 10

6 | AQ451736787778en-000201

2| Product description
2.2 Short description optional version, enclosed Liquid subcooler, expansion valve, solenoid valve, filter drier and a sight glass enclosed separately, for individual, external mounting (Fig. 3).

Fig. 3

2.3 Short description optional version, mounted Liquid subcooler, expansion valve, solenoid valve, filter drier and a sight glass mounted directly to the compressor, piped and insulated (Fig. 4).
D GB F E
Expansion valve

Liquid subcooler

Sight glass

Solenoid valve

Filter drier

Dimension and connection values can be found in Chapter 10

Fig. 4

AQ451736787778en-000201| 7

2| Product description

2.4 Name plate (example)

BOCK Bock GmbH, Benzstr. 7 72636 Frickenhausen, Germany

AN35455A040

Fig. 5

Y/Y Y

BOCK lub E55

1 Type designation

7 Voltage, circuit, frequency

2 Machine number 3 Type code

} 8 Nominal rotation speed
9 Displacement

50 Hz

4 Maximum operating current 5 Starting current (rotor blocked)
Y: Part winding 1

V. ND = low pressure stage
V. HD = high pressure stage 10 Voltage, circuit, frequency

YY: Part windings 1 and 2

11 Nominal rotation speed

6 ND (LP): max. admissible operating

12 Displacement

} 60 Hz

pressure (g) Low pressure side

V. ND = low pressure stage

HD (HP): max. admissible operating

V. HD = high pressure stage

pressure (g) High pressure side 13 Oil type filled at the factory

Observe the limits of application diagrams!

14 Terminal box protection type Electrical accessories can change

the IP protection class!

2.5 Type key (example)
HGZ X 7 / 2110-4 R404A

Refrigerants 3)
Number of poles
Swept volume
Size Oil charge ²) Series ¹)
1) HGZ = Hermetic gas cooled (suction gas cooled), two-stage 2) X = Ester oil filling (HFC refrigerant R404A/R507, R410A) 3) Possible alternative refrigerants R404A/R507, R410A, R448A/R449A, R22

8 | AQ451736787778en-000201

3| Areas of application

3.1 Refrigerants
· HFKW : · (H)FCKW:

R404A/R507, R410A, R448A/R449A R22

3.2 Oil charge

The compressors are filled at the factory with the following oil type:

– für R404A/R507, R410A, R448A/R449A

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. HGZX7/2110-4 R404A).

INFO

For refilling, we recommend the above oil types.

Alternatives: see chapter 8.5.

ATTENTION

The oil level must be in the visible part of the sight glass; damage to the compressor is possible if overfilled or underfilled!

max. oil level min.

~~ 2,3 Ltr.

Fig. 6

F 3.3 Limits of application
E 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.

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!

ATTENTION Any operation with frequency converter is inadmissible.

AQ451736787778en-000201| 9

3 |Areas of application

R404A/R507

Fig. 7

tc (°C)

F
50
E
40

R448A/R449A

toh<10K

-70

-60

-50

-40

-30

-20

-10 to (°C)

Fig. 8

Unlimited application range

tO Evaporation temperature (°C) tC Condensing temperature (°C) tOh suction gas superheat (K)
Design for other areas on request

Max. permissible operating pressure (LP/MP/HP)1): 19/19/28 bar

1) LP = low pressure MP = intermediate pressure HP = high pressure

10 | AQ451736787778en-000201

3 |Areas of application

R410A

Fig. 9

R22

Fig. 10

Unlimited application range

tO Evaporation temperature (°C) tC Condensing temperature (°C) tOh suction gas superheat (K)
Design for other areas on request

Max. permissible operating pressure (LP/MP/HP)1): 19/19/28 bar

1) LP = low pressure MP = intermediate pressure HP = high pressure

AQ451736787778en-000201| 11

3 |Areas of application
3.4 Subcooling temperature The design of the expansion valve on the compressor can be defined with the help of the diagram by approximately calculating the subcooling temperature arising in the relevant operating conditions (t0/tc). Diagrams for determining the subcooling temperature at the output of the liquid subcooler.

Fig. 11

Fig. 12

Subcooling temperature subcooler outlet (FUA)

the

tO = Evaporating temperature

12 | AQ451736787778en-000201

3 |Areas of application

Fig. 13

Fig. 14

Subcooling temperature subcooler outlet (FUA)

the

tO = Evaporating temperature

AQ451736787778en-000201| 13

4| Description of functions

The refrigerant suctioned out of the evaporator (20) is compressed by the 4 cylinders of the LP stage (2) to intermediate pressure MP. After that, the superheated refrigerant flows through the intermediate pressure chamber (3), where it is cooled by the liquid subcooler system to reduce the discharge end temperature. The refrigerant then flows through the intermediate pressure line (4) to the electric
motor of the compressor for to cool the motor. After this, the refrigerant is suctioned in by the two HP cylinders (5) and compressed to the final pressure.

Liquid subcooler system

The liquid subcooler system consists of the components – liquid subcooler (plate heat exchanger) (6) – expansion valve (7) – sight glass (8) – solenoid valve (9) – filter drier (10)

After the refrigerant reciever (15), the liquid line will be splitted into two lines:

Line A leads through the liquid subcooler (6) and the subcooled refrigerant flows to the

evaporator (20). Through Line B refrigerant is expanding through the expansion valve (7) into the

liquid subcooler (6) in order to subcool the refrigerant of line A and through the intermediate pressure

line (MP) to cool the superheated refrigerant, which is compressed from low pressure to intermediate

pressure chamber (3).

14 | AQ451736787778en-000201

4| Description of functions
4.1 Two-stage refrigeration cycle with liquid subcooler

Scope of supply

Line A Line B

Fig. 15
Explanations
1 Compressor 2 Cylinder LP-stage 3 Intermediate pressure chamber MP 4 Intermediate pressure line MP 5 Cylinder HP-stage 6 Liquid subcooler 7 Reinjection valve 8 Sight glass 9 Solenoid valve 10 Filter drier 11 Damper, pressure line 12 Oil separator 13 Non-return valve 14 Condenser

D
GB
F
E
15 Refrigerant receiver 16 Filter drier 17 Solenoid valve 18 Sight glass 19 Expansion valve (evaporator) 20 Evaporator 21 Liquid separator 22 Damper, suction line 23 Filter suction line
LP = Low pressure MP = Intermediate pressure HP = High pressure FUE = Liquid subcooler, inlet FUA = Liquid subcooler, outlet

AQ451736787778en-000201| 15

5| Compressor assembly

INFO

New compressors are factory-filled 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.

5.1 Storage and transportation

?
Fig. 16

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 combustible environment.

Fig. 17

Use transport eyelet.
Do not lift manually! Use lifting gear!

5.2 Setting up

ATTENTION Fittings (e.g. pipe holders, additional units, mounting parts etc.) on

the compressor are not permissible!

Fig. 18

Provide adequate clearance for maintenance work. Ensure adequate compressor ventilation.

Do not use in a corrosive, dusty, damp atmosphere or a combustible environment.

Fig. 19 Fig. 20

Setup on an even surface or frame with sufficient loadbearing capacity. Compressor in principle rigidly install.

16 | AQ451736787778en-000201

5| Compressor assembly

5.3 Installation of the liquid subcooler system (optional version)

Separately enclosed components: 1 Liquid subcooler

2 Reinjection valve

3 Solenoid valve

4 Filter drier

5 Sight glass

6 Screw-in sleeve, solder adapter and seals

3
5 6

Please check for completeness of parts before beginning installation.

INFO

Observe manufacturer`s instructions!

2 4
Fig. 21

ATTENTION To avoid vibration cracks in the subcooler system, the individual components must be mounted directly to the compressor or installed as a decoupled unit!

Assembly: INFO

The points listed here represent general guidelines and information

on how to pipe and connect the subcooler unit. To perform this work

technical knowledge and skill as well as proof of a hard-soldering

test certificate in accordance with DIN EN 13133 is required.

Pipe connections: For connections, see dimension diagram Chapter 10.
System design, piping and necessary support points for the individual components must be carefully planned and carried out. Properly insulate liquid subcooler against condensation and heating and the related loss of performance. For rigidity reasons, the use of stainless steel pipes with a wall of 1 mm is preferred. The pipes must be free of tension during and after soldering to prevent possible breaks lateron.

INFO

Use only suitable hard solder and flux. Solder under an inert gas

atmosphere when copper components are to be soldered! The

accompanying expansion valve is designed and adjusted for the

compressor and the listed refrigerant (sensor charge, nozzle).

Only use expansion valves approved and supplied by Bock!

INFO

The intermediate pressure line and intermediate pressure chamber

are fully insulated at the factory. To mount the expansion valve,

cut the insulation as shown in the marked area in Fig. 22, page 18.

Correct sensor placement is marked by an unpainted area on the

pipe.

AQ451736787778en-000201| 17

5| Compressor assembly

Fig. 22

R Connection of pressure compensation line for expansion valve

W Refrigerant injection connection

X Schrader connection for intermedie-pressure gauge

Y Position of temperature sensor / unpainted

X Intermediate pressure chamber W
Intermediate pressure line (Shown without insulation)
7/16″ UNF M22 x 1,5 7/16″ UNF

18 | AQ451736787778en-000201

5| Compressor assembly
5.4 Installation example, liquid subcooler with accessories Dia. 16 mm

Line A

Line B

Dia. 16 mm

Heat insulation

to the evaporator

Dia.12 mm Dia.16 mm Dia.6 mm

Dia.12 mm Dia.12 mm

from the receiver
FUE

Intermediate pressure chamber MP Y

D GB F Line B E

Fig.23

1 Liquid subcooler 2 Filter drier 3 Solenoid valve 4 Sight glass
INFO

5 Expansion valve 6 Temp. sensor expansion valve 7 Pressure compensation connection

FUA Liquid subcooler,
Outlet FUE Liquid subcooler,
Inlet

General notes: Sensor lines, wires, etc. should not be attached with cable binders directly to pipes or frames; otherwise, the thin pipes may be worn through. It is better to run them through spiral protective tubes. If the compressor will be set up outside, UV-resistant materials should be used.

AQ451736787778en-000201| 19

5| Compressor assembly
5.5 Factory-installed liquid subcooler system (optional design) Liquid subcooler, expansion valve, solenoid valve and the sight glass are mounted directly at the compressor, piped and insulated.

FUE

FUA

D Fig.24
GB

FUE: Liquid subcooler inlet

FUA: Liquid subcooler outlet

5.6 Pipe connections

ATTENTION

Damage possible. Superheating can damage the valve. Remove the pipe supports therefore from the valve for soldering. Only solder using inert gas to inhibit oxidation products (scale)

Fig. 25: graduated internal diameter

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.

INFO

A soldering suppot for tube diameter 54 mm is mounted to the

suction shut-off valve of the compressor.

A soldering support for tube diameter 2 1/8” accompanies the compressor.

20 | AQ451736787778en-000201

5| Compressor assembly
5.7 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.

5.8 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.

A rule of thumb: Always lay the first pipe section starting from the shut-off valve downwards and parallel to the drive shaft.

Rigid fixed point

As short as possible

Fig. 26

AQ451736787778en-000201| 21

5| Compressor assembly
5.9 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.
tighten
release

Valve spindle seal Fig. 27

Fig. 28

5.10 Operating mode of the lockable service connections

Service connection

Connection cannot

closed

be shut off

Connection

Pipe connection

Spindle

blocked

Opening the shut-off valve: Spindle: turn to the left (counter-clockwise) as far as it will go.

Compressor

–> Shut-off valve completely opened / service connection closed.

The connection which cannot be shut off is intended for safety devices.

Fig. 29

Service connection opened

Connection cannot be shut off

Spindle

Connection open

Pipe connection

Opening the service connection Spindle: Turn ½ – 1 turn to the right clockwise.

Compressor

–> Service connection opened / shut-off valve opened.

The connection which cannot be shut off is intended for safety devices.

Fig. 30

After activating the spindle, generally fit the spindle protection cap again and tighten with 14-16 Nm. This serves as a second sealing feature during operation.

22 | AQ451736787778en-000201

6| Electrical connection

6 Electrical connection

DANGER

Risk of electric shock! High voltage! Only carry out work when the electrical system is disconnected from the power supply!

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.

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.

6.1 Information for contactor and motor contactor selection

All protection devices and switching or monitoring units must be fitted in accordance with the local

safety regulations and established specifications (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.

AQ451736787778en-000201| 23

6.2 Circuit diagram for part-winding start

FC1.1

I> I> I>

FC1.2

FC2

I> I> I>

QA1

QA2

SF1

1 3 5 FC1.1 QA3

FC1.2

D GB F E

X SS

L1 L2 L3 N

PE 1

10 11

EC1

1U1

2U1

1V1

2V1

1W1

Y/YY

2W1

BT1

X1 L1 L1 N N 43 43 11 12 14

X2 1 2 3 4 5 6

MP10

Fig. 31

ACnosmchplrueßsksaosr tteenrmVienradl icbhotxer

BT2 BT2 BT2

QA1 Main switch

FC1.1 Motor protection switch part winding 1

FC1.2 Motor protection switch part winding 2

FC2

Fuse control current circuit

BP2 High pressure safety monitor

BP3

Safety chain (high/low pressure monitoring)

BP1 Oil differential pressure monitor

SF1

Control voltage switch

BT3

Release switch (thermostat)

QA2
5HGZ76e
QA3

Mains contactor part winding 1 Mains contactor part winding 2
Datum 20.02.2009

Bearb. bauknecht

24 | AQ451736787778en-0002Ge0p1r. 08.03.2017

nderung

Datum

Name Norm

Urspr.

Ers. f.

Ers. d.

QA2

KF3

QA2

KF2

KF1

QA2

QA3

KF1 QM1

KF2

KF3

9
L1.1 L2.1 L3.1 L1.2 QA2
N PE

12 13 14 15 16

BP1

T2 N

P> BP2

P-Öl

17 18 19

20 21 22

P BP3

23 24 25 26
EB1 BT3

D GB F E

KF1

Delay relay max. 1 s (slow release), part winding 2

KF2

Delay relay max. 20 s (slow release),

Open solenoid Y1 (subcooler)

KF3

Delay relay max. 20 s (slow release), 5HGZ76e.7 5HGZ76e.7

compresssor switch-off (suction subcooler)

QM1 Solenoid valve intermediate cooler

EC1

Compressor motor

BT1

Cold conductor (PTC sensor)

BT2

Thermal protection thermostat (PTC sensor)

Auxiliary contactor safety chain

HGZ7/HGZ76e © Danfoss | Climate Solutions | 2023.07

= +
BOCK COMPRESSOAQR4S51736787778en-06B0lH. 0G26Z0H716G|eZ27B5l6. e

6| Electrical connection

6.3 Standard motor, design for direct or partial winding start

Designation on the name plate

Sticker on the terminal box

Y/YY
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.

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:

D 400 V

DDirierketcsttasrttaYrtY

TeiPlwairctkwluindgisnsgtasrtaYr/tYY

L1 L2 L3

2U1 2V1 2W1

1U1 1V1 1W1
L1 L2 L3

ATTENTION

Failure to do this results in opposed rotary fields 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.

26 | AQ451736787778en-000201

6| Electrical connection

6.4 Electronic trigger unit MP10
The compressor motor is fitted with cold conductor temperature sensors (PTC) connected to the electronic trigger unit MP 10 in the terminal box. Readiness to operate is signalled by the H3 LED (green) after the power supply is applied. In the case of excess temperature in the motor winding, the unit switches off the compressor and the H1 LED lights red.
The hot gas side of the compressor can also be protected against overtemperature using a thermal protection thermostat (accessory). The H2 LED (red) is provided for the protection function.
The unit trips when an overload or inadmissible operating conditions occur. Find and remedy the cause.

INFO

The unit has a restart prevention device. After you have rectified the

fault, interrupt the mains voltage. This unlocks the restart prevention

device and the LEDs H1 and H2 go out.

6.5 Connection of the trigger unit MP10

INFO

Connect the trigger unit MP10 in accordance with the circuit

diagram. Protect the trigger unit with a delayed-action fuse (F) of

max. 4 A. In order to guarantee the protection function, install the

trigger unit as the first element in the control power circuit.

Temperature monitoring connections:

Motor winding:

Terminals 1 – 2

Thermal protection thermostat: Terminals 3 – 4

Restart prevention:

Terminals 5 – 6

ATTENTION Terminals 1 – 6 on the trigger unit MP 10 and terminals PTC 1 and PTC 2 on the compressor terminal board must not come into contact with mains voltage. This would destroy the trigger unit and PTC sensors. The supply voltage at L1-N (+/- for DC 24 V version) must be identical to the voltage at terminals 11, 12, 14 and 43.

Fig. 32 Terminal box

AQ451736787778en-000201| 27

6| Electrical connection

6.6 Function test of the trigger unit MP10
Before start-up, troubleshooting or making changes to the control power circuit, check the functionality of the trigger unit:

Pos Procedure
1 · Interrupt power supply (L1 or S1) · Release the motor temperature sensor connection (1 or 2) · Release the hot gas temperature sensor (if installed) (3 or 4)

LED H1 LED H2 LED H3 red red green OFF OFF OFF

2 · Restore the power supply (L1 or S1) · Function check of motor temperature sensor: operational · Function check of hot gas temperature sensor: operational

ON ON
ON

3 · Interrupt power supply again (L1 or S1) · Reconnect terminals 1 or 2 and/or 3 or 4

OFF OFF OFF

4 · Restore the power supply (L1 or S1):

OFF OFF ON

· MP10 is operational again

The compressor and the trigger unit MP10 are operational when the H3 LED (green) lights.

28 | AQ451736787778en-000201

6| Electrical connection
6.7 Oil sump heater (accessories) When the compressor is at a standstill, refrigerant diffuses into the lubricating oil of the compressors housing, depending on pressure and ambient temperature. This reduces the lubricating capacity of the oil. When the compressor starts up, the refrigerant contained in the oil evaporates out throught the reduction in pressure. The consequences can be foaming and migration of the oil, causing oil shocks under certain circumstances.
Operation: The oil sump heater operates when the compressor is at a standstill. When the compressor starts up, the oil sump heater switches off again automatically. Connection: The oil sump heater must be connected via an auxiliary contact (or parallel wired auxiliary contact) of the compressor contactor to a seperate electric circuit. El. data: 230 V – 1 – 50/60 Hz, 140 W.
D GB F E Fig. 33
ATTENTION The oil sump heater must not be connected to the electrical circuit of the safety control chain.

AQ451736787778en-000201| 29

7| Commissioning

7.1 Preparations for start-up

INFO

In order to protect the compressor against inadmissible operating

conditions, high pressure and low pressure pressostats are manda-

tory on the installation side.

The compressor has undergone trials in the factory and all functions have been tested. There are therefore no special running-in instructions.
Check the compressor for transport damage!

7.2 Pressure strength test
The compressor has been tested in the factory for pressure integrity. If however the entire system is to be subjected to a pressure integrity test, this should be carried out in accordance with EN 378-2 or a corresponding safety standard without the inclusion of the compressor.

7.3 Leak test

DANGER Risk of bursting!

The compressor must only be pressurised using nitrogen (N2). Never pressurise with oxygen or other gases!

The maximum permissible overpressure of the compressor must

not be exceeded at any time during the testing process (see name

plate data)! Do not mix any refrigerant with the nitrogen as this

could cause the ignition limit to shift into the critical range.

Carry out the leak test on the refrigerating plant in accordance with EN 378-2 or a corresponding

safety standard, while always observing the maximum permissible overpressure for the compressor.

7.4 Evacuation

ATTENTION

Do not start the compressor if it is under vacuum. Do not apply any voltage – even for test purposes (must only be operated with refrigerant). Under vacuum, the spark-over and creepage current distances of the terminal board connection bolts shorten; this can result in winding and terminal board damage.

First evacuate the system and then include the compressor in the evacuation process. Relieve the compressor pressure. Open the suction and pressure line shut-off valves. Evacuate the suction and discharge pressure sides using the vacuum pump. At the end of the evacuation process, the vacuum should be < 1.5 mbar when the pump is switched off. Repeat this process as often as is required.
In addition to the suction or high pressure side, the intermediate pressure area of the compressor must also be evacuated (use connection X, see page 18, fig. 22). The solenoid valve of the subcooling system (page 19, fig. 23, item 3) must be opened.

30 | AQ451736787778en-000201

7| Commissioning

7.5 Refrigerant charge

CAUTION Wear personal protective clothing such as goggles and protective gloves!

Make sure that the suction and pressure line shut-off valves are open.
With the compressor switched off, add the liquid refrigerant directly to the condenser or receiver,
breaking the vacuum. Pay attention to adequate refrigerant fill before starting up the compressor. During operation, refrigerant must be free of bubbles in sight glasses 1 and 2 of the liquid
subcooler.
If the refrigerant needs topping up after starting the compressor, it can be topped up in vapour form on the suction side, or, taking suitable precautions, also in liquid form at the inlet to the
evaporator.

ATTENTION Avoid overfilling the system with refrigerant!

To avoid shifts in concentration, zeotropic refrigerant blends must always only be filled into the refrigerating plant in liquid form.

Do not pour liquid coolant through the suction line valve on

the compressor.

It is not permissible to mix additives with the oil and

refrigerant.

7.6 Start-up

WARNING Ensure that both shut-off valves are open before starting the compressor!

Check that the safety and protection devices (pressure switch, motor protection, electrical contact protection measures, etc.) are all functioning properly. Switch on the compressor and allow to run for a minimum of 10 min. Check the oil level by: The oil must be visible in the sightglass.
ATTENTION If larger quantities of oil have to be topped up, there is a risk of oil hammer effects. If this is the case check the oil return!

AQ451736787778en-000201| 31

7| Commissioning

7.7 Avoiding slugging
ATTENTION Slugging can damage the compressor and cause refrigerant to leak.

To prevent slugging:
The complete refrigeration system must be properly designed.
All components must be compatibly rated with each other with regard to output (particularly the evaporator and expansion valves). Suction gas superheat at the compressor input should be min. 7 – 10 K. (check the setting of the expansion valve). The system must reach a state of equilibrium. When selecting the evaporator expansion valve, pay attention to correction factors for liquid
subcooling. Avoid transfer of refrigerant into the compressor when the system is at a
standstill. The use of a liquid separator is recommended.

ATTENTION To avoid liquid shocks on the HP stage, the expansion valve may

only be opened approx. 15-20 seconds after the compressor is

switched on (full load operation).

At compressor shut-down:

Close the solenoid valve approx. 15 – 20 seconds before the com-

pressor is switched off. F

32 | AQ451736787778en-000201

8| Maintenance

8.1 Preparation WARNING

Before starting any work on the compressor: Switch off the compressor and secure it to prevent a restart. Relieve compressor of system pressure. Prevent air from infiltrating the system!
After maintenance has been performed: Connect safety switch. Evacuate compressor. Release switch lock.

8.2 Work to be carried out

In order to guarantee optimum operational reliability and service life of the compressor, we

recommend carrying out servicing and inspection work at regular intervals:

Oil change:

– not mandatory for factory-produced series systems. – for field installations or when operating near the application limit: for the first time after 100

to 200 operating hours, then approx. every 3 years or 10,000 – 12,000 operating hours.

Dispose of used oil according to the regulations; observe national regulations.

Annual checks: Oil level, leak tightness, running noises, pressures, temperatures, function of GB auxiliary devices such as oil sump heater, pressure switch.
F

E 8.3 Recommended spare parts/accessories

Available spare parts and accessories can be found on our compressor selection tool under vap.bock.de as well as at bockshop.bock.de.
Only use genuine Bock spare parts!

AQ451736787778en-000201| 33

8| Maintenance

8.4 Replacing the valve plates
The compressors are divided into an LP and an HP compressor stage. Different valve plate designs are required because of the different ducts in the individual compressor stages.

WARNING

The valve plates have been fitted with safety bolts to prevent any confusion. The safety bolts engage in the corresponding bores on the cylinder heads, the safety bolts must not be removed!

Installation of the valve plates:

Safety bolt

Safety valve

Safety bolt

Safety valve

Valve plate LP stage

Valve plate HP stage

Fig. 34

34 | AQ451736787778en-000201

8| Maintenance

8.5 Lubricants / oil
The oil type filled as standard in the factory is marked on the name plate, and this should always be used, even in the case of maintenance units. Alternative oil types can vary significantly in quality due to additives or inferior raw materials by the manufacturer. Validation within the compressors entire operating limits can not be guaranteed, if such alternative oil types are used. It is for this reason, that we only recommend the use of oil from Bock! Bock assumes no liability for any damage arising from alternative oil types.

Refrigerants

Bock standard oil types

HFKW (e.g. R404A, R407C)

BOCK lub E55

HFCKW (e.g. R22)

BOCK lub A46

8.6 Decommissioning

Close the shut-off valves on the compressor. Drain the refrigerant (it must not be discharged into the

environment) and dispose of it according to the regulations. When the compressor is depressurised,

undo the fastening screws of the shut-off valves. Remove the compressor using an appropriate hoist.

Dispose of the oil inside in accordance with the applicable national regulations.

AQ451736787778en-000201| 35

9| Technical data
Oil charge
Weight ²)
D GB F E
Voltage

No. of cylinders
36 | AQ451736787778en-000201

Type HGZ7/1620-4

Displacement

50 Hz (1450 rpm)
LP HP

60 Hz (1740 rpm)
LP HP

m3/h

Electrical data 3

Max. operating current
2

Max. power consumption
2

Starting current
(rotor locked)

Connections ¹)

Discharge Suction

line

kg mm (inch) mm (inch) Ltr.

*PW 1+2

*PW1/PW 1+2

93,7 / 46,9 112,5 / 56,2 4

27,0 175 / 269 294

HGZ7/1860-4 6 107,6 / 53,8 129,1 / 64,6 4

30,0 175 / 269 290 35 (1 3/8) 54 (2 1/8) 4,5

HGZ7/2110-4

122,4 / 61,2 146,9 / 73,5 4

36,0 232 / 357 288

* PW = Part Winding, motors for part winding starting 1 = 1. part winding, 2 = 2. part winding
¹) For solder connections ²) in standard design
LP = Low pressure stage HP = High pressure stage Oil sump heater: 230V -1- 50/60 Hz 140 W 1 Tolerance (± 10%) relative to the mean value of the voltage range.

2 Take account of the max. operating current / max. power consumption for design of fuses, supply lines and safety devices.
3 All specifications are based on the average of the voltage range 4 380-420 V Y/YY -3- 50 Hz PW, 440-480 V Y/YY -3- 60 Hz PW
> Winding ratios: 50% / 50 %

8 10|Dimensio7ns and conne6ctions

10.1 Compressor in standard design Maße in mm Dimensions in mm

Änderungen vorbehalten Subject to change without notice

Massenschwerpunkt Centre of gravity

Intermediate pressure mixed line mounted and insulated. (Liquid subcooler with accessories as an extra item)

DV W X

Centre of gravityRohrführung HGZ(X)7/1620+1860

Tube guidance HGZ(X)7/1620+1860

wird

verteilt

wieA3 B ZP D

Maßb

ÖV

230 189

ce
2

15,5

285

J
290

1415

472

340

Massenschwerpunkt Centre of gravity

+2
827

DV W X Layout of pipes
HGZ(X)7/1620+1860 Rohrführung HGZ(X)7/1620+1860 Tube guidance HGZ(X)7/1620+1860

A1 SV

Anschlüsse / Connections
Z Saugabsperrventil, Rohr (L)* SV Suction line valve, tube (L)* Druckabsperrventil, Rohr (L)* DV Discharge line valve, tube (L)* Anschluss Saugseite, nicht absperrbar A Connection suction side, not lockable R Anschluss Saugseite, absperrbar A1 Connection suction side, lockable Anschluss Mitteldruck, nicht absperrbar A2 Connection medium pressure, not lockable
Anschluss Mitteldruck, nicht absperrbar A3
Connection medium pressure, not lockable

+2
628

D mm / Zoll
mm / inch

54 -2 1/8″

GB mm / Zoll
mm / inch

35 -1 3/8″

Zoll / inch 1/8″ NPTF

F Zoll / inch 7/16″ UNF

Zoll / inch Zoll / inch

1/8″ NPTF
E1/4″ NPTF

B1 A3 B
ZP D ÖV
F J

290 340

L C

Anschluss Druckseite, nicht absperrbar B
Connection discharge side, not lockable Anschluss Druckseite, absperrbar B1 Connection discharge side, lockable Anschluss Öldrucksicherheitsschalter OIL C Connection oil pressure safety switch OIL

Zoll / inch 1/8″ NPTF Zoll / inch 7/16″ UNF Zoll / inch 7/16″ UNF

Anschluss Öldrucksicherheitsschalter LP D Connection oil pressure safety switch LP

Zoll / inch 7/16″ UNF

Anschluss Ölrückführung vom Ölabscheider D1
Connection oil return from oil separator

Zoll / inch 1/4″ NPTF

D1 Halbhermetischer

zweistufiger

Verdichter

/ E

Semi-hermetic Anschluss Öldruckmanometer Connection oil pressure gauge

two-stage

compressor Zoll / inch 7/16″ UNF

Ölablass F

M22x1,5

Typ / type HGZ7/1620-4 R22

Teile-Nr. / part-no.
14412

KTyp /
type

TpeaHirlte-OSOn-tiiNollodcphrrf.eaa.nirng/ÖelfpTtüyllulyugpnpge/

Teile-Nr. / Typ / part-nmom. typMe22x1,5

HGZX7/1620-4 R404A 1J 4AC4no1snc5nhelcutsiosnÖHolsiGlusmuZmpXfphe7hiez/ua1nte6gr20-4 R410A 1441m8m HGMZ22Xx17,5/162

HGZ7/1860-4 R22

14413

OHGZX7/1860-4 R404A

K14S4c1ha6uglas HGZX7/1860-4 R410A Sight glass

1441m9m HGZ3xXM67/186

HGZ7/2110-4 R22 14414
4xØ11

HGZX7/2110-4 R404A
Q

L14AC4no1snc7nhelcutsiosnWHthäGermrmZeasXlcph7ruo/ttz2ethc1teio1rmn0oth-se4tarmt Ros4ta1t 0A
Z Anschluss für Ölspiegelregulator
O Connection oil level regulator Anschluss Ölserviceventil
ÖV Connection oil service valve

14Z4o2ll /0inch HG1/8Z” XNP7T/F211

3xM6

Zoll / inch 1/4″ NPTF

+2
628

Anschluss Öldifferenzdrucksensor P Connection oil pressure differential sensor
R Anschluss Öltemperatursensor
Q Connection oil temperature sensor

M20x1,5

Zoll / inch 1/8″ NPTF

Anschluss Druckausgleichsleitung für Einspritzventil R
Connection equalizer for injection valve Anschluss Kältemittel Einspritzung W Connection for refrigerant injection

Zoll / inch mm

7/16″ UNF M22x1,5

RView X: Schwingungsdämpfer / Distanzrolle
Connection possibility for oil level regulator Vibration absorbers / Distance roller

Schraderanschluss für Mitteldruckmanometer X Connection for Schrader valve for intermediate
pressure manometer (L)* = Lötanschluss / brazing connection

Zoll / inch 7/16″ UNF

189 30 25
576
+2
632 30
25

Three-hold connector for oil level regulator Der Lieferant muss sicherstellen, dass die Ware

M10 in einwandfreiem Zustand angeliefert wird 0n | Umstellung auf AWA-Design (Ventil 70044)

(Korrosionsschutz, Verpackung für sicheren

Products ESK, AC+R, CARLY50(3x M6, 10 deep) Transport).

0m | Betrifft Blatt 2

The supplier has to ensure the delivery of parts

in proper conditions (corrosion packaging for safe transportation).

prevention, 0m | Betrifft Blatt 2+4

11596 11222

18.03.22 J. Faßbender

Fig. 35 29.01.21

S. Büttner

Dimensions in mm 10950

06.04.20 L. Armbruster

A. Layh J. Keuerleber J. Keuerleber

Weitergabe sowie Vervielfältigung dieses Dokuments, Verwertung und Mitteilung seines Inhalts sind ver-

0l | Betrifft Blatt 4

boten, soweit nicht ausdrücklich gestattet. Zuwider-

© Danfoss | Climate Solutions | 2023.07 albhermetischer zwhRoeadeneicdrshltuetnugGfüefernisgdcehveenmraprFcflakiVclslhmtdeeuensrrtedPrzeauiitcnetnrShat-cg,thuGeanedgrbernae/vurocsSrhabstezme.huamsltAteelnlrie-.-h00kke||rBBmeetterriitffffittcnButlawrtBto2la-(tstB4tlaattg1enucroAmnspicrhetesnsaoktrualisiert)

The reproduction, distribution and utilization of this

p /

document as well
Teile-Nr.co/nteTntyspto/ others

as the communication of its
without express aTuethiolreiz-aNtiorn. /is

T0yj p| B/etrifft

Blatt

Teile-Nr. / Typ /

Teile-Nr. /

10901

20.12.19

V. Polizzi

A. Layh

10529

30.08.18 CAD Gast D. Widmaier

AQ451736787778en-000201| 37

10577

30.08.18 CAD Gast

A. Layh

10394 Zeich25n.0.-4N.18r. / JD. Fraaßwbeinndegr-noA. .:Layh

10| Dimensions and connections
10.2 Compressor in optional design (Liquid subcooler with accessories attached directly to the compressor)
N FUA FUE

U T
FS

ca.260

Layout of pipes

HGZ(X)7/1620+1860

E L1

ca.950

ca.670

X ÖV1

View X: Connection possibility for oil level regulator
Three-hold connector for oil level regulator Products ESK, AC+R, CARLY (3x M6, 10 deep)
Fig. 36 Dimensions in mm

38 | AQ451736787778en-000201

10| Dimensions and connections

SV Suction line DV Discharge line

see technical data, Chapter 9

FUE Liquid subcooler IN

FUA Liquid subcooler OUT

Connection suction side, not lockable

A1 Connection suction side, lockable

A2 Connection intermediate pressure, not lockable

A3 Connection intermediate pressure, not lockable

Connection discharge side, not lockable

B1 Connection discharge side, lockable

Connectoin oil pressure safety switch OIL

Connection oil pressure safety switch LP

D1 Connection oil return from oil separator

Connection oil pressure gauge

Oil drain

Ø 16 mm – 5/8″

Ø 16 mm – 5/8″ 1/8″ NPTF 7/16″ UNF 1/8″ NPTF 1/4″ NPTF 1/8″ NPTF 7/16″ UNF 7/16″ UNF 7/16″ UNF 1/4″ NPTF 7/16″ UNF

M22 x 1,5

FS Sight glass liquid line

Ø 12 mm

Oil charge plug

Oil sump heater (accessories)

M22 x 1,5

Sight glass

Connection thermal protection thermostat

L1 Thermal protection thermostat

Filter drier

1/8″ NPTF 1/8″ NPTF
Ø 12 mm

Connection oil level regulator

ÖV Connection oil service valve

ÖV1 Oil service valve

Connection oil differential pressure sensor

Connection oil temperature sensor

Connection of pressure compensation line for expansion valve

R1 Pressure compensation line for expansion valve

see view X 1/4″ NPTF 7/16″ UNF
M20 x 1,5 1/8″ NPTF 7/16″ UNF
Ø 6 mm

Solenoid valve

Ø 12 mm

Expansion valve – refrigerant-dependent

Ø 12 mm

W Connection refrigerant injection

M22 x 1,5

Connection for Schrader valve for intermediate pressure manometer

7/16″ UNF

AQ451736787778en-000201| 39

11| Declaration of incorporation

Declaration of incorporation for incomplete machinery in accordance with EC Machinery Directive 2006/42/EC, Annex II 1. B

Manufacturer:

Bock GmbH Benzstraße 7 72636 Frickenhausen, Germany

We, as manufacturer, declare in sole responsibility that the incomplete machinery

Name: Types:

Semi-hermetic compressor HG(X)12P/60-4 S (HC) …………………… HG(X)88e/3235-4(S) (HC) UL-HGX12P/60 S 0,7……………………… UL-HGX66e/2070 S 60 HGX12P/60 S 0,7 LG …………………….. HGX88e/3235 (ML/S) 95 LG HG(X)22(P)(e)/125-4 A …………………… HG(X)34(P)(e)/380-4 (S) A HGX34(P)(e)/255-2 (A) ………………….. HGX34(P)(e)/380-2 (A)(K) HA(X)12P/60-4 ……………………………… HA(X)6/1410-4 HAX22e/125 LT 2 LG ……………………. HAX44e/665 LT 14 LG HGX12e/20-4 (ML/S) CO2 (LT) ……….. HGX44e/565-4 S CO2 UL-HGX12e/20 (S/ML) 0,7 CO2 (LT)… UL-HGX44e/565 S 31 CO2 HGX12/20-4 (ML/S/SH) CO2T………….. HGX46/440-4 (ML/S/SH) CO2 T UL-HGX12/20 ML(P) 2 CO2T…………. UL-HGX46/440 ML(P) 53 CO2T HGZ(X)7/1620-4 ……………………………. HGZ(X)7/2110-4 HGZ(X)66e/1340 LT 22…………………… HGZ(X)66e/2070 LT 35
HRX40-2 CO2 T H………………………….. HRX60-2 CO2 T H

Name:

Open type compressor

Types:
D

F(X)2 …………………………………… F(X)88/3235 (NH3) FK(X)1………………………………….. FK(X)3

GB
Serial number:

FK(X)20/120 (K/N/TK)…………….. FK(X)50/980 (K/N/TK) BC00000A001 BN99999Z999

F
complies with the following provisions of the above-mentioned Directive:

According to Annex I, points 1.1.2, 1.1.3, 1.1.5, 1.3.2, 1.3.3, 1.3.7, 1.5.1, 1.5.2, 1.5.13 and

1.7.1 to 1.7.4 (excepted 1.7.4 f) are fulfilled.

Applied harmonised standards, in particular: EN ISO 12100 :2010

EN 12693

:2008

Safety of machinery — General principles for design — Risk assessment and risk reduction Refrigerating systems and heat pumps — Safety and environmental requirements — Positive displacement refrigerant compressors

Remarks:

We also declare that the special technical documentation for this incomplete machine has been created in accordance with Annex VII, Part B and we obligate to provide these upon reasoned request from the individual national authorities by data transfer.
Commissioning is prohibited until it has been confirmed that the machinery into which the incomplete machine above is to be incorporated complies with the EC Machinery Directive and an EC Declaration of Conformity, Annex II. 1. A exists.

Authorized person for compiling and handing over technical documentation:

Bock GmbH Alexander Layh Benzstraße 7 72636 Frickenhausen, Germany

Frickenhausen, 04th of January 2021

i. A. Alexander Layh, Global Head of R&D

40 | AQ451736787778en-000201

11| Declaration of incorporation

Declaration of incorporation of partly completed machinery in accordance with UK Statutory Instrument Supply of Machinery (Safety) Regulations 2008, Annex II 1. B

Manufacturer:

Bock GmbH Benzstraße 7 72636 Frickenhausen, Germany

We, as manufacturer, declare in sole responsibility that the partly completed machinery

Name: Types:

Semi-hermetic compressor HG(X)12P/60-4 S (HC) …………………… HG(X)88e/3235-4(S) (HC) UL-HGX12P/60 S 0,7……………………… UL-HGX66e/2070 S 60 HGX12P/60 S 0,7 LG …………………….. HGX88e/3235 (ML/S) 95 LG HG(X)22(P)(e)/125-4 A …………………… HG(X)34(P)(e)/380-4 (S) A HGX34(P)(e)/255-2 (A) ………………….. HGX34(P)(e)/380-2 (A)(K) HA(X)22e/125-4 ……………………………..HA(X)6/1410-4 HAX22e/125 LT 2 LG ……………………. HAX44e/665 LT 14 LG HGX12e/20-4 (ML/S) CO2 (LT) ……….. HGX44e/565-4 S CO2 UL-HGX12e/20 (S/ML) 0,7 CO2 (LT)… UL-HGX44e/565 S 31 CO2 HGX12/20-4 (ML/S/SH) CO2T………….. HGX46/440-4 (ML/S/SH) CO2 T UL-HGX12/20 ML(P) 2 CO2T…………… UL-HGX46/440 ML(P) 53 CO2T HGZ(X)7/1620-4 ……………………………. HGZ(X)7/2110-4 HGZ(X)66e/1340 LT 22…………………… HGZ(X)66e/2070 LT 35
HRX40-2 CO2 T H………………………….. HR(Z)X60-2 CO2 T (H)(V)

Name:

Open type compressor

Types:

F(X)2 …………………………………………… F(X)88/3235 (NH3)

FK(X)1………………………………………….. FK(X)3 FK(X)20/120 (K/N/TK)…………………….. FK(X)50/980 (K/N/TK)

Serial number:

BC00000A001 BN99999Z999

complies with the following provisions of the above-mentioned Statutory instrument:

According to Schedule 2, part1, points 1.1.2, 1.1.3, 1.1.5, 1.3.2, 1.3.3, 1.3.7, 1.5.1, 1.5.2,

1.5.13 and 1.7.1 to 1.7.4 (excepted 1.7.4 f) are fulfilled.

Designated standards: EN ISO 12100 :2010

EN 12693

:2008

Remarks:

We also declare that the special technical documentation for this partly completed machine has been created in accordance with Annex II, 1. B and we obligate to provide these upon reasoned request from the individual national authorities by data transfer.
Commissioning is prohibited until it has been confirmed that the machinery into which the partly completed machine above is to be incorporated complies with the UK Statutory Instrument Supply machinery (Safety) regulations 2008 and an EC Declaration of Conformity, Annex II, 1. A exists.

Authorized person for compiling and handing over technical documentation:

Bock GmbH Alexander Layh Benzstraße 7 72636 Frickenhausen, Germany

Frickenhausen, 14th of October 2022

i. A. Alexander Layh, Global Head of R&D

AQ451736787778en-000201| 41

11| Declaration of conformity

PED – CLASSIFICATION (as per EU Pressure Equipment Directive 2014/68/EU)

DECLARATION OF CONFORMITY for use of the compressors within the European Union (as per EU Pressure Equipment Directive 2014/68/EU)

We hereby declare that piping of the refrigerant compressors

HGZX7/2110-4 R404A, HGZX7/2110-4 R448A/R449A HGZX7/2110-4 R410A HGZ7/2110-4 R22
agrees with the Pressure Equipment Directive 2014/68/EU dated 15 May 2014.

Valid for Category I piping Evaluation procedure module A

The other parts of the piping fall under article 3§3 of the

Guideline and correspond to good engineering practice

Frickenhausen, 2021-03-01

i.A. Alexander Layh, Global Head of R&D

42 | AQ451736787778en-000201

D GB F E

AQ451736787778en-000201| 43

44 | AQ451736787778en-000201