Contents hide

2.1.1 Areas of Application

2.2 Commissioning

2.3 Maintenance

2.4 Accessories

2.5 Technical Data

2.6 Dimensions and Connections

2.7 Declaration of Incorporation

3 Product Usage Instructions

3.1 Safety

3.2 Qualifications Required of Personnel

3.3 Danger to Life and Limb in the Event of Faults During Operation

3.4 Safety Instructions

3.5 Intended Use

3.6 Documents / Resources

3.6.1 References

BOCK FK40 Vehicle Compressors

Product Information

The product is a refrigerating compressor called FK40,
manufactured by Bock. It is designed for use in refrigeration
systems and comes in three different models: FKX40/470 K, FKX40/560
K, and FKX40/655 K. The product is capable of handling specific
refrigerants and has certain limitations of application. It is
important to follow the safety instructions provided in the user
manual to ensure safe operation.

Product Description

The compressor is a pressurized machine that requires careful
handling. It has a name plate and a type key for identification
purposes.

Areas of Application

The compressor is suitable for use with specific refrigerants
and has limitations on oil charge and application. It is important
to refer to the user manual for detailed information on these
aspects.

Commissioning

Prior to starting the compressor, certain preparations need to
be made. These include conducting pressure strength and leak tests,
as well as evacuating the system. The refrigerant charge and oil
level should also be checked before starting the compressor.

Maintenance

Regular maintenance is required for optimal performance of the
compressor. This includes tasks such as preparing for maintenance,
carrying out necessary work, checking the shaft seal and oil
reservoir, and using recommended spare parts and accessories.
Lubricants and oils specified by the manufacturer should be used
for maintenance.

Accessories

A capacity regulator is available as an accessory for the
compressor.

Technical Data

Detailed technical specifications of the compressor can be found
in the user manual.

Dimensions and Connections

Information regarding the dimensions and connections of the
compressor can be found in the user manual.

Declaration of Incorporation

The user manual includes a declaration of incorporation for the
compressor.

Product Usage Instructions

Safety

Ensure to follow the safety instructions provided in the user
manual. The safety instructions are categorized into different
levels of danger: DANGER, WARNING, CAUTION, ATTENTION, and INFO.
Each level indicates the severity of potential risks.

Qualifications Required of Personnel

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

Danger to Life and Limb in the Event of Faults During
Operation

It is important to be aware of potential dangers that may arise
during operation and take necessary precautions to avoid
accidents.

Safety Instructions

Refrigerating compressors are pressurized machines that require
caution and care in handling. The maximum permissible overpressure
should not be exceeded, even for testing purposes.

Intended Use

The compressor is intended for use in refrigeration systems
within the specified operating limits. Only the refrigerant
specified in the user manual should be used.

View Fullscreen

BOCK® FK40
Operating guide
FKX40/470 K FKX40/560 K FKX40/655 K

Translation of the original instructions

AQ450736920607en-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 lead to 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. The safety advice, which is contained in these instructions for assembly, and which is relevant for regular operation and maintenance, must be forwarded by the manufacturer in his own documents to the operator of the entire system. It must also be ensured, that personnel working in daily operation with the compressor have access to important information such as safety and warning advice about the compressor. Such persons must read the safety advice and have understood it. Bock assumes no liability for any damage arising from non-compliance.
D GB CN E I TR CN

2 | AQ450736920607en-000201

Contents
1 Safety 1.1 Identification of safety instructions 1.2 Qualifications required of personnel
1.3 Danger to life and limb in the event of faults during operation 1.4 General safety instructions 1.5 Intended use
2 Product description 2.1 Brief description 2.2 Name plate 2.3 Type key
3 Areas of application 3.1 Refrigerants 3.2 Oil charge 3.3 Limits of application
4 Compressor assembly 4.1 Setting up 4.2 Maximum permissible inclination 4.3 V-belt drive 4.4 Main bearing load 4.5 Electromagnetic coupling assembly 4.6 Pipe connections 4.7 Pipes 4.8 Operating the shut-off valves 4.9 Operating mode of the lockable service connections 4.10 Suction pipe filter
5 Commissioning 5.1 Preparations for start-up 5.2 Pressure strength test 5.3 Leak test 5.4 Evacuation 5.5 Refrigerant charge 5.6 Oil level check 5.7 Shaft seal 5.8 Avoiding liquid shocks
6 Maintenance 6.1 Preparation 6.2 Work to be carried out 6.3 Shaft seal, emptying the oil reservoir 6.4 Recommended spare parts / accessories 6.5 Integrated decompression valve 6.6 Lubricants / oils 6.7 Decommissioning
7 Accessories 7.1 Capacity regulator
8 Technical data
9 Dimensions and connections
10 Declaration of incorporation

Page 4
6 8 9

E I TR CN

18
19 20 22

AQ450736920607en-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.

1.3 Danger to life and limb in the event of faults during operation

WARNING

If a compressor continues to be operated during extreme running noise and/or a sharp reduction in refrigerating capacity, there is the danger of further events occurring, such as the fracture of the housing wall. If people are standing in the immediate surroundings, there is the risk of severe injury or even death from flying parts. · In the event of extreme running noise, switch the compressor off
immediately. · If there is a sharp reduction in refrigerating capacity, switch the
compressor off immediately. · Secure the compressor against being switched on again. · In such cases do not continue to operate the compressor under any
circumstances.

4 | AQ450736920607en-000201

1| Safety

1.4 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.

1.5 Intended use

These assembly instructions describe the standard version of the FK40 manufactured by Bock. The

compressor is intended for use in refrigeration systems in compliance with the operating limits. Only the refrigerant specified in these instructions may be used.

Any other use of the compressor is prohibited!

The Bock refrigerating compressor named in the title is intended for installation in a machine (with-

in 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. CN

AQ450736920607en-000201 | 5

2| Product description
2.1 Brief description
Compact four cylinder compressor in V design. Four capacity ranges. Lightweight aluminum design. Lubricating oil pump with oil pressure relief valve independent of rotational direction. Variable arrangement of the shut-off valves.

Eyebolt Discharge shut-off valve

Leak oil trapping device

with oil reservoir

Shaft seal

Shaft end

Suction shut-off valve

Oil pump

Fig. 1

Name plate Leak oil drain hose
Oil sight glass

Cylinder cover Valve plate
Oil sight glass

Fig. 2 Dimension and connection values can be found in Chapter 9

6 | AQ450736920607en-000201

2| Product description

2.2 Name plate (example)

BOCK

AS12B3C4152A304250D020

2 3
Fig. 3

19/28bar Öl: BOCK lub E55 5

1 Type designation 2 Displacement at 1450 rpm

4 Machine number 5 Factory-filled oil type

} 3 LP: Max. permissible operating pressure (g) Low pressure side HP: Max. permissible operating pressure

Observe the limits of application diagrams!

(g) High pressure side

2.3 Type key (example)

FK X 4 0 / 655 K

Design ¹)

Swept volume

Size

Ester oil charge ²)

Series CN

¹) K – specially for air-conditioning

²) X – Ester oil charge (HFC refrigerant, e.g. R134a, R407C)

AQ450736920607en-000201 | 7

3| Areas of application

3.1 Refrigerants
· HFKW / HFC: · (H)FCKW / (H)CFC:

R134a, R404A/R507, R407C R22

3.2 Oil charge

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

– for R134a, R404A/R507, R407C

BOCK lub E55

– for R22

BOCK lub A46

Compressors with ester oil charge (BOCK lub E55) are marked with an X in the type designation (e.g. FKX40/655).

INFO

For recharging, we recommend the above oil types:

see chapter 6.6.

3.3 Limits of application

ATTENTION Compressor operation is possible within the operating limits.

These can be found in Bock compressor selection tool (VAP)

under vap.bock.de. Observe the information given there. D
– Max. permissible discharge end temperature: 140°C

– Permissible ambient temperature: (-20°C) – (+100°C)

– Max. permissible switching frequency: 12 x /h – A minimum running time of 2 min. at equilibrium (continuous

operation) must be achieved.

Avoid continuous operation near the threshold. Should the com-

pressor happen to be used near the thresholds, we recommend the

use of a thermal protection thermostat (Accessories, Chap. 7).

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 suffi-

cient oil is transported back to the compressor.

When operating in the vacuum range, there is a danger of air entering on the suction side. This can cause chemical reactions, a pressure rise in the condenser and an elevated compressed-gas temperature. Prevent the ingress of air at all costs!

Maximum admissible
operating pressure (g) (LP/HP)1): 19/28 bar

1) LP = Low pressure HP = High pressure

8 | AQ450736920607en-000201

4| Compressor assembly

INFO

New compressors are factory-filled with inert gas. Leave this

service 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 Setting up WARNING

Move compressors only with hoists that have adequate load-bearing capacity.

Transport and suspension unit on the eyebolt (Fig . 4) or direct on the discharge line valve (Fig. 5).

Fig. 4

Fig. 5

Storage at (-40°C) – (+100°C), maximum permissible relative humidity 10% – 95%, no

condensation. Fittings (e.g. pipe holders, additional units etc.) on the compressor are permissible only

following consultation with Bock.

Setup on an even surface or frame with sufficient load-bearing capacity. Use all 4 fastening

points.

Correct setup of the compressor and mounting of the belt drive are decisive for running comfort,

operating safety and the service life of the compressor.

4.2 Maximum permissible inclination

ATTENTION Poor lubrication can damage the compressor. Respect the stated values.

Fig. 6
© Danfoss | Climate Solutions | 2023.07

A max. 30°, max. 2 minutes
a max. 15°, continuous operation
AQ450736920607en-000201 | 9

4| Compressor assembly

4.3 V-belt drive

ATTENTION

Inappropriately designed belt drives, especially belt knocking
or excessive tensioning forces can cause compressor damage!
Make sure that the drive belt is designed correctly, e.g. by using tensioners and selecting the belt profile and the belt length.

During operation with capacity controllers (Accessories, Chap. 7), the changing load can cause increased running noises and belt drive vibrations.

4.4 Main bearing load

To prevent the belt drive overloading the compressor main bearing,

ensure that:

The force applied at the force engagement force by the belt

tension (see Fig. 7) must not exceed F = 2750 N. max
If the force engagement point shifts forwards (see Fig.11, small

point),

the

force

F max

reduces

per

the

following

formula:

Fmax= 2750 N Mbmax= 245 kNmm

Fmax =

245 kNmm (90 mm + L1 [mm])

Fig. 7

L1 (mm)

4.5 Electromagnetic clutch assembly

The following description applies for an electromagnetic clutch secured to a shaft. To absorb the magnetic field of the electromagnetic clutch, the front bearing flange has a

snug fit Ø 148 h8 (see Fig. 8).

To connect the magnetic field, loosen the 4 cheese head screws M8 on the bearing flange

(see Fig. 8).

Slide the magnetic field to a snug fit and re-attach using the four cheese head screws M8

(Fig. 9). Screw torque = 37 Nm.

Further assembly of the electromagnetic clutch according to the clutch manufacturer.

Bearing flange, front Magnetic field

Fig. 8

148 h8

10 | AQ450736920607en-000201

Fig. 9
© Danfoss | Climate Solutions | 2023.07

4| Compressor assembly

4.6 Pipe connections
Fig. 10: Stepped internal diameters

The pipe connections have stepped internal diameters so that pipes with standard millimetre and inch dimensions can be used. The connection diameters of the shut-off valves are designed for maximum compressor output. The required pipe cross-section must be matched to the capacity. The same applies for non-return valves.

ATTENTION

Overheating can damage the valve. Therefore, remove the pipe supports from the valve before soldering. Solder only using inert gas to inhibit oxidation products (scale).

4.7 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.

4.8 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.

Release

Valve spindle seal Fig. 11

Tighten Fig. 12

AQ450736920607en-000201 | 11

4| Compressor assembly

4.9 Operating mode of the lockable service connections

1
Opening the shut-off valve: a) Spindle 1: turn to the left (counter-clockwise) as far as it will go.
–> Shut-off valve fully opened / service connection 2 closed.

Fig. 13

Opening the service connection (2):

Fig. 14

b) Spindle 1: Turn ½ – 1 rotation to the right.

–> Service connection 2 opened / shut-off valve opened.

Connection 3 is provided for safety devices and is not lockable.

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.

4.10 Suction pipe filter
For systems with long pipes and higher degree of contamination, a filter on the suction-side is recommended. The filter has to be be renewed depending on the degree of contamination (reduced pressure loss).

12 | AQ450736920607en-000201

5| Commissioning

5.1 Preparations for start-up

INFO

To protect the compressor against inadmissible operating condi-

tions, high-pressure and low-pressure pressostats are mandatory

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!

5.2 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.

5.3 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.

5.4 Evacuation
First evacuate the system and then include the compressor in the evacuation process. Relieve the compressor pressure. Open the suction and discharge line 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 the process as often as is required.

AQ450736920607en-000201 | 13

5| Commissioning

5.5 Refrigerant charge

CAUTION

Wear personal protective clothing such as goggles and protective gloves!

Make sure that the suction and discharge line valves are open.
With the compressor switched off, add the liquid refrigerant directly to the condenser or receiver, breaking the vacuum. 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 (e.g. R407C) must always be added to the refrigerating plant in liquid form. Do not pour liquid refrigerant through the suction line valve on the compressor.
It is not permissible to mix additives with the oil and refrigerant.
D

5.6 Oil level check

CN After starting, check the compressor’s oil level.

Drive motor in operating condition “High idle”.

Compressor run time min. 10 minutes.

The system should have reached operating points.

Check oil level. As the installation location of the compressor can differ in practice (inclinations), it

is recommended that the oil level is checked in both sight glasses. The oil level must be visible in

at least one sight glass.

ATTENTION After a compressor is replaced, the oil level must be checked again. If the level is too high, oil must be drained off (risk of oil impact, reduced performance of the air-conditioning system).

5.7 Shaft seal
ATTENTION Failure to observe the following instructions can cause loss of refrigerant and damage to the shaft seal!

INFO

The shaft seal seals and lubricates with oil. An oil leakage of

0.05 ml per operating hour is therefore normal. This applies

particularly during the run-in phase (200 – 300 h).

To trap and collect leaked oil, the FK40 is fitted with an inte-

grated leak oil trapping device with oil reservoir (P.6, Fig. 1).

14 | AQ450736920607en-000201

5| Commissioning

The compressor shaft is sealed to outside using a shaft seal. The sealing element rotates with the shaft. The following is especially important to ensuring fault-free operation:
The complete refrigerant circuit must be correctly executed and clean inside. Heavy shocks and vibrations to the shaft as well as continuous cyclic operation are to be avoided. The sealing surfaces can stick together during prolonged downtimes (e.g. winter). Therefore, run the system every 4 weeks for 10 minutes.

5.8 Avoiding liquid shocks

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

To avoid liquid shocks, the following points should be observed:

The complete refrigeration plant must be correctly designed and executed.

The capacities of all components must be compatible (particularly evaporator and expansion valve).

Suction gas superheating at the evaporator output should be at least 7 10 K (check setting of the expansion valve).

The system must reach a state of equilibrium. Particularly in critical systems (e.g. several evaporator points), suitable measures, e.g. use of

liquid traps, solenoid valve in the liquid line, etc. are recommended.

6| Maintenance

6.1 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.

AQ450736920607en-000201 | 15

6| Maintenance

6.2 Work to be carried out Oil change: In principle, an oil change is not a mandatory requirement, if the equipment is correctly manufactured and properly operated. Based on decades of experience, we recommend however that the following oil change/service work is carried out: · Initial oil change during the first maintenance of the vehicle (at the latest after one year) · Then after every 5,000 operating hours, at the latest however after 3 years. Also clean the oil filter. · An oil change is also necessary, if the oil is very cloudy and dark, or after repairs have been carried out on the compressor.
Emptying the shaft seal oil reservoir: As required depending on use, but at the latest after 1 year or approx. 1,400 operating hours
Where requirements are higher during use (frequent operation at the limits of application, or in hotlands with over +40 °C ambient temperature, or in the case of deep freezing), the following requirements must be observed: · Initial oil change during the first maintenance of the vehicle (at the latest after one year) · Then an oil change after every 2,000 operating hours, at the latest however after two years. Also
clean the oil filter.

Preventive maintenance

The above requirements for higher use applications also apply in the case of preventive

maintenance. The shaft seal must also be changed after 3 years.

Regular inspections (at least annually): Checks to be carried out on oil level in the oil sight

glass, oil fill level of the shaft seal in the oil drain hose, absence of leaks in the compressor, running

noise, vibrations, pressures, temperatures, and functioning of auxiliary devices such as the capacity control.

6.3 Shaft seal, emptying the oil reservoir CN
Since changing the shaft seal involves encroaching into the

refrigerant circuit, this is only recommended, if the seal is

losing refrigerant, or if oil is escaping in excess of the per-

missible amount (see information on page 14, chapter 5.7,

“Shaft seal”). Changing the shaft seal is described in the rel-

evant spare part kit.

Emptying the oil reservoir: The oil reservoir can be emptied very simple without having to dismantle the coupling and/or belt drive. It is recommended that this is done at the same time as the air-conditioning maintenance and motor service. To proceed, detach the oil hose from the bracket, remove the sealing plug and drain the oil into a collecting vessel. After emptying, reseal the oil hose and clamp it into the bracket. Dispose of the used oil in accordance with national regulations.

Fig. 15

16 | AQ450736920607en-000201

6| Maintenance

The shaft seal is a wearing part, and its service life depends on the prevailing conditions. Damaging effects on the shaft seal:

· Too little suction gas superheat, particularly during wet operation
· Too high or too low belt tension · Thermal overload (operation outside the limits of application) · Frequent cycling · Long periods of stoppage
· Material deposits / dirt from the system
Due to these effects, the shaft seal can develop leaks, and it must then be replaced.

6.4 Recommended spare parts/accessories

Maintenance set for oil change · BOCK lub E55 2 x 1 l · Oil drain screw with seal Maintenance set for shaft seal · shaft seal kit · BOCK lub E55 2 x 1 l · Oil drain screw with seal

Available spare parts and accessories can be found on our compressor selection tool under

vap.bock.de as well as in our online spare parts catalogue at bockshop.bock.de.

CN Only use original Bock spare parts!

6.5 Integrated decompression valve I
The valve is maintenance free. TR
However, constant leakage can occur after blowing off due to abnormal operating conditions. This

leads to reduced performance and increases the compressed gas temperature. In this case check the

valve and replace as necessary.

6.6 Lubricants / oils
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.

Refrigerant
HFC (e.g. R134a, R407, R 404A) HCFC (e.g. R22)

Bock standard oil grade BOCK lub E55
BOCK lub A46

AQ450736920607en-000201 | 17

6| Maintenance
6.7 Decommissioning Close the shut-off valve on the compressor. Drain the refrigerant (it must not be discharged directly 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 valid national regulations.

7| Accessories

7.1 Capacity regulation

ATTENTION

Capacity-regulated operation alters the gas speeds and pressure
ratios of the refrigerating plant: Adjust the suction line routing and
dimensioning accordingly,do not set the control intervals too close and
do not let the system switch more than 12 times per hour (refrigerating plant must have reached a state of equilibrium). Continuous

operation in the control stage is not recommended as the gas

velocity in the plant system under certain circumstances does not

guarantee sufficient oil return to the compressor with activated

capacity regulator for a compressor speed below 1200 – 1500 rpm.

We recommend switching to unregulated operation (100% capacity)

for at least 5 minutes per capacity-regulated operating hour. An assured oil return can also be realised by a 100% capacity require-

ment after each compressor restart as otherwise the compressor

can also be shut down in the regulated operating time by the

thermostat. CN
Electrical actuation of the solenoid valve: Normally open, (cor-

responds to 100 % compressor capacity).

Cylinder covers for capacity regulation are marked with the designation “CR” (Capacity Regulator).

FK40 / … Designation Capacity regulator 12 V Capacity regulator 24 V

… K Art.-Nr. 097B40510* 097B40511*

For a description, see technical information “Capacity regulation” (Item No. 097B09900*)
If the capacity regulator is factory-fitted, it is integrated into an extra, dedicated cylinder cover. For retrofits, it is supplied with the cylinder cover. The regulator closes one cylinder bank (capacity regulation approx. 50%).

* Please note that the legacy BOCK code numbers are without 097B

18 | AQ450736920607en-000201

AQ450736920607en-000201 | 19

No. of cylinders
© Danfoss | Climate Solutions | 2023.07

Type
FKX40/470 K FKX40/560 K 4 FKX40/655 K

Displacement
cm3 466 554 650

Swept volume (1450 rpm)
m3/h 40.5 48.3 56.6

D GB CN E I TR CN

Weight
kg 33.0 33.0 31.0

Connections

Discharge Suction

line

mm / inch mm / inch

28 / 1 1/8 35 / 1 3/8

35 / 1 3/8 35 / 1 3/8

Oil charge
Ltr.
2.0

Inertia moment of the driving
unit [kgm2]

0.0043

Forced lubrication

Rotationindependent

8| Technical data
Oil pump Lubrication

9| Dimensions and connections

+ 2
368 329 145

+2
326
A1 SV A SV1

+2
383 344
DV B B1

Anschlüsse Connections Saugabsperrvent SV Suction line valve Druckabsperrven DV Discharge line va Anschluss Saugs A Connection suctio

Anschluss Saugs A1
Connection suctio

4xM10x21 2

Anschluss Drucks B
Connection disch Anschluss Drucks B1 Connection disch Anschluss Öldruc C Connection oil pr

7
D GB

+ 2
368 329 145 170

Anschlüsse / Connections

Saugabsperrventil, Rohr (L)* SV
Suction line valve, tube (L)* Druckabsperrventil, Rohr (L)* DV Discharge line valve, tube (L)*

L mit Staubschutz
verschlossen /
Y closed with dust cover

C/E Anschluss Saugseite, nicht absperrbar
A Connection suction side, not lockable Anschluss Saugseite, absperrbar
A1 Connection suction side, lockable Anschluss Druckseite, nicht absperrbar
B Connection discharge side, not lockable

Zoll / inch Zoll / inch Zoll / inch

1/8″ NPTF
H 7/16″ UNF K
1/8″ NPTF

Anschluss Druckseite, absperrbar B1
Connection discharge side, lockable

Zoll / inch

F 7/16″ UNF

4x 13
+2
326

Anschluss Öldrucksicherheitsschalter OIL
M Connection oil pressure safety switch OIL

5Zoll / inch

210Anschluss Öldrucksicherheitsschalter LP
D
232Connection oil pressure safety switch LP Anschluss Öldruckmanometer E
Connection oil pressure gauge

Zoll / inch
Y Zoll / inch

1/8″ NPTF 108,5

1/8″ NPTF
383

+2168,5

344 1/8″ NPTF

Ölablass

Dimensions in mm A1 SV A SV1

F Oil drain Stopfen Ölfüllung
H

Oil charge plug

DV B B1 Zoll / inch 1/4″ NPTF
Zoll / inch 1/4″ NPTF

Schauglas K
Sight glass
4xM10x21 Anschluss Wärmeschutzthermostat
L Connection thermal protection thermostat

Zoll / inch 2 x 1 1/8 ” 18 UNEF
Zoll / inch 1/8″ NLPeTcFköl-Ablass Schlauch Leak oil drain hose

130

Centre of gravity

170 253

Anschluss Öldruc D
Connection oil pr Anschluss Öldruc E Connection oil pr Ölablass F Oil drain Stopfen Ölfüllung H Oil charge plug Schauglas K Sight glass Anschluss Wärm L Connection therm Ölsieb M Oil filter Opt. Anschlussm SV1 Opt. connection s (L)* = Lötanschlu (L)* = Brazing con
8x M
3

148 h8 130 110 9 8 9 0 7 2

Anschlüsse / Connections 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 Anschluss Saugseite, absperrbar A1 Connection suction side, lockable
Fig. 16 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

mit St versc
clos dus Zoll / inch 1/8 Zoll / inch 7/1 Zoll / inch 1/8 Zoll / inch 7/1
10 Zoll / inch 1/8

170 253

170
2 M12x28
4 0

CN E I TR

Ölsieb M
Oil filter

M22x1,5

Opt. Anschlussmöglichkeit Saugabsperrventil

SV1

–

Opt. connection suction line valve
Shaft end(L)* = Lötanschluss

Y (L)* F= Barahzinrgzcoennuecgtiovn erdichter / Vehicle Compressor

C/E T8yxp /Mtyp8e Teile-Nr. / part-no.

6x M8 H FKX40/470 K
FKX40/560 K

40709 40710

FKX40/655 K A5x4K0971D1 IN 6888

170 253

Anschluss Öldrucksicherheitsschalter LP D
Connection oil pressure safety switch LP

Zoll / inch 1/8

Anschluss Öldruckmanometer
MassenschweE rpCounnnecktiton oil prÄessnurde geaurguengen

vorZbolel /hincahlten1/8

Centre of graFvitÖylablass Oil drain

Subject to changZoell / winchitho1u/4

Stopfen Ölfüllung H
Oil charge plug

Zoll / inch 1/4

Schauglas K
Sight glass

Zeichn Zoll / inch 2 x 1 U

Anschluss Wärmeschutzthermostat L

Zoll / inch 1/8

Connection thermal protection thermostat

Ölsieb M
Oil filter Opt. Anschlussmöglichkeit Saugabsperrventil SV1 Opt. connection suction line valve

7- .00

1:5 F

(L)* = Lötanschluss (L)* = Brazing connection
8x M8

148 h8 130 110 9 8 9 0 7 2

4x 13

M
210

232

Y 50

Der Lieferant muss sicherstellen, dass die Ware

in einwandfreiem Zustand angeliefert wird 0c | Betrifft Blatt 3

(Korrosionsschutz, Verpackung für sicheren

Transport).

0b | Betrifft Blatt 2

100

The supplier has to ensure the delivery of parts

in proper conditions (corrosion packaging for safe transportation).

prevention, 0a | Schraube, Scheibe, Federring am Wellenende entfernt

108,5 168,5

11215

Lecköl-Ablass Schlauch Leak oil drain hose

11059

10619

130

6x M8 Gußtoleranzen / General casting tolerances:
–

Zeichnungs-Nr. / Drawing-No.

Baumustergeprüft / Type examination: Nein / No Gewicht / Weight: (kg) –

A57x9.D01I:N506088B

2 4 0

Allgemeintoleranzen / General tolerances DIN ISO 2768-mK-E

Benennung / D

über / above 0.5 6 30 120 400 bis / up to 6 30 120 400 1000

148 h8 130 110 9 8 9 0 7 2

M12x28

±0.1 ±0.2 ±0.3 ±0.5 ±0.8

Leak oil drain hose 5540 Unbemaßte Radien / Undimensioned radii: –

Oberflächenangab Indication of surfac DIN EN ISO 1302

11.12.20 22.07.20 18.03.19

J. Faßbender N. Stolnik S. Büttner

M. Schaich A. Layh
M. Schaich

74 100

Rz 160
s

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

0a | Zylinderstift für Zylinderbuchse aus VDGH entfernt und im Endprodukt aufgenommen

10597

18.03.19

S. Büttner M. Schaich

boten, soweit nicht ausdrücklich gestattet. Zuwider-

MassenschwerpunDktimeÄnnsdieornusnginenmvomrbehalten Maße in mm handlungen verpflichten
Rechte für den Fall der

zu Schadenersatz. Alle Patent-, Gebrauchsmuster-

| Schraubenanzugsdrehmoment

ergänzt,

Druckschriften

Teile-Nr.

korrigiert

10567,10709

Centre of gravity Subject to change without notice oder Geschmacksmustereintragung vorbehalten. 0a | Blindflansch 04269 + 04715 auf 51752 vereinheitlicht
The reproduction, distribution and utilization of this

Dimensions in m104m68

18.03.19 18.03.19

Fig. 17 S. BMütatnsesr ensMch. Swcehrapicuhnkt Änderungen vorbehalten

Maße in mm

Centre of gravity

Subject to change without notice Dimensions in

S. Büttner M. Schaich

Fahrzeugverdichter / Vehicle Compressor document as well as the communication of its
contents to others without express authorization is

| Unterlagscheiben an Bodenplatte entfernt

prohibited. Offenders will be held liable for the

10447,10463

18.03.19

S. Büttner M. Schaich

Zust.

Rev.

7 FKX40/470 K

FKX40/560 K

Teile-Nr. / part-no.

Änd.-Nr. / Mod-No. Datum / Date Bearb. / Edited Geprüft / Appr. Maß / Dimension

Z4400e77i01c90hn.-N6r. / Drawing-no. :

PassuZnge/icClheanra.n-cNe r. / DGrEaAwBoicnkgG-mnbHo-.B:e
3

FKX40/655 K

40711

7.000B-40711.0

7.000B-40711.0 0c

20 | AQ450736920607en-000201

ußtoleranzen / General casting tolerances:

Zeichnungs-Nr. / Drawing-No.

Teile-Nr. / Part-No.

Blatt / Page:

Gußtoleranzen / General casting tolerances: –

Zeichnungs-Nr. / Drawing-No.

Teile-Nr. / Part-No.

Baumustergeprüft / Type examination: Nein / No Gewicht / Weight: (kg) –

7. 000B -40711 .0

/|GCenleirmal toaletraenceSsolutioBnense|n2nu0n2g 3/ D.0e7scription:

Maßsütabebr //aboveWer0k.5stoff (6Zeil3e02+1320alte4r0n0ativ) /

Scale: bis / up toMater6ial (3L0ine120+3 4a0lt0er1n0a0t0ive):

K –

9| Dimensions and connections

SV Suction line DV Discharge line

see technical data, Chapter 8

Connection suction side, not lockable

A1 Connection suction side, lockable

Connection discharge side, not lockable

B1 Connection discharge side, lockable

Connection oil pressure safety switch OIL

Connection oil pressure safety switch LP

Connection oil pressure gauge

Oil drain

Oil charge plug

Sight glass

Connection thermal protection thermostat

1/8″ NPTF 7/16″ UNF 1/8″ NPTF 7/16″ UNF 1/8″ NPTF 1/8″ NPTF 1/8″ NPTF 1/4″ NPTF 1/4″ NPTF 2 x 1 1/8″- 18 UNEF 1/8″ NPTF

Oil filter

M22 x 1.5

SV1 Opt. connection suction line valve

– –

AQ450736920607en-000201 | 21

10| Declaration of incorporation

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

Manufacturer:

Bock Compressor India Pvt Ltd #3A1, Bommasandra Industrial Area, Hebbagodi, Hosur Road, Bangalore 560099

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

Name: Types:

Semi-hermetic compressor HG(X)22e/125-4 (S) ………….HG(X)66e/2070-4(S)

Name: Types:

Open type compressor FKX40/470 K…………………….FKX40/655 K

Serial number:

BB00000A001 BN99999Z999

D GB CN E I TR CN

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

Bock Compressor India Pvt Ltd Prasad Sannagowder #3A1, Bommasandra Industrial Area, Hebbagodi, Hosur Road, Bangalore 560099
Prasad Sannagowder, Managing Director Frickenhausen, 02nd of March 2021

22 | AQ450736920607en-000201

D GB CN E I TR CN

AQ450736920607en-000201 | 23

24 | AQ450736920607en-000201