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6 | AQ453354265896en-000201

© Danfoss | Climate Solutions | 2023.07

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 Product description

Two different designs are available for various ranges of application:

> for air-conditioning 

 the K Design

> for air-conditioning or normal cooling  the N Design

The differences lie mainly in the valve plate tooling which is adapted to each applica-
tion range where operational safety and efficiency are concerned.

  Compact six cylinder compressor in W design.
  Six capacity ranges.
  Lightweight aluminum design. 
  Lubricating oil pump with oil pressure relief valve independent of rotational direction.
  Variable arrangement of the shut-off valves.

Fig. 1

2.1  Brief description

Fig. 2

Valve plate

 Cylinder cover

Shaft end

Shaft seal

Suction shut-off valve

Suction line valve

Oil pump

Dimension and connection values can be found in Chapter 9

Eyebolt

Leak oil trapping 
device with oil 
reservoir

Name plate

Eyebolt

Oil sight glass

Oil sightglass

Discharge shut-off valve

Leak oil drain hose

Summary of Contents for BOCK FK50

Page 1: ...55 K FK50 660 K FK50 775 K FK50 830 K FK50 980 K FK50 660 K1 FK50 775 K1 FK50 830 K1 FK50 980 K1 FKX50 460 N FKX50 555 N FKX50 660 N FKX50 775 N FKX50 460 K FKX50 555 K FKX50 660 K FKX50 775 K FKX50 6...

Page 2: ...e 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 maintena...

Page 3: ...lectromagnetic clutch 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 4 11 Characteristics for...

Page 4: ...ration 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...

Page 5: ...uipment Directive Commissioning is permissible only if the compressor has been installed in accordance with these assembly instructions and the entire system into which it is integrated has been inspe...

Page 6: ...iciency are concerned Compact six cylinder compressor in W design Six capacity ranges Lightweight aluminum design Lubricating oil pump with oil pressure relief valve independent of rotational directio...

Page 7: ...High pressure side 4 Machine number 5 Factory filled oil type Fig 3 2 2 Name plate example 2 3 Type key example K specially for air conditioning N specially for air conditioning or normal cooling X Es...

Page 8: ...oid 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 c...

Page 9: ...or transport damage before starting any work ATTENTION Poor lubrication can damage the compressor Respect the stated values WARNING Move compressors only with hoists that have adequate load bear ing c...

Page 10: ...ad screws M8 Fig 8 Screw torque 37 Nm Further assembly of the electromagnetic clutch according to the clutch manufacturer Fig 7 Bearing flange front Magnetic field Fig 8 148 h8 4 4 Main bearing load T...

Page 11: ...nd inch dimensions The depth of pipe insertion will depend on the dimension The connection diameters of the shut off valves are designed for maximum compressor output The required pipe cross section m...

Page 12: ...Spindle 1 1 2 1 rotation to the right Service connection 2 opened shut off valve opened Connection 3 is provided for safety devices and is not lockable 1 1 3 3 2 2 After activating the spindle general...

Page 13: ...30 72 115 4 5 6 bis up to ber above DIN ISO 2768 mK E Allgemeintoleranzen General tolerances Dimension Passung Clearance Baumustergepr ft Type examination 120 400 0 5 0 5 6 BOCK G Unbema te Radien Und...

Page 14: ...ith EN 378 2 or a corresponding safety standard while always observing the maximum permissible overpressure for the compressor DANGER Risk of bursting The compressor must only be pressurised using dri...

Page 15: ...htglass 5 5 Refrigerant charge 5 6 Oil level check 5 7 Shaft seal CAUTION Wear personal protective clothing such as goggles and protective gloves ATTENTION Avoid overfilling the system with refrigeran...

Page 16: ...rium 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 ATTENTION Slugging can damage the co...

Page 17: ...equent 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 th...

Page 18: ...n 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 t...

Page 19: ...etthecontrolintervalstoocloseand do not let the system switch more than 12 times per hour refriger ating plant must have reached a state of equilibrium Continuous operation in the control stage is not...

Page 20: ...compressor housing see Chap 9 Connect the thermal protection thermostat in series with the control line Technical Data Switching voltage max 24 V DC Switching current max 2 5 A at 24 V DC Switch off t...

Page 21: ...0 6 459 40 1 44 0 28 1 1 8 35 1 3 8 2 5 0 0047 Forced lubrication Rotation direction independent FK50 555 556 48 3 43 0 28 1 1 8 35 1 3 8 FK50 660 662 57 6 42 0 35 1 3 8 2 x 35 1 3 8 FK50 775 776 67 6...

Page 22: ...of gravity Ma e in mm Dimensions in mm nderungen vorbehalten Subject to change without notice Teile Nr part no Typ type Teile Nr part no Typ type Teile Nr part no K 13864 13872 FK X 50 830 N 13916 13...

Page 23: ...B1 Connection discharge side lockable 7 16 UNF C Connection oil pressure safety switch OIL 1 8 NPTF D Connection oil pressure safety switch LP 1 8 NPTF E Connection oil pressure gauge 1 8 NPTF F Oil d...

Page 24: ...K N TK FK X 50 980 K N TK Serial number BC00000A001 BN99999Z999 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...

Page 25: ...0 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...

Page 26: ...26 AQ453354265896en 000201 Danfoss Climate Solutions 2023 07...

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