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 Compressor assembly

  During  operation  with  capacity  controllers  (Accessories,  Chap.  7),  the  changing  load  can  cause 

increased running noises and belt drive vibrations.

4.3  V-belt drive

 

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 148 h8 (see Fig. 7).

 

To connect the magnetic field, loosen the 4 cheese head screws M8 on the bearing flange 
(see Fig. 7).

 

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

 

To prevent the belt drive overloading the compressor main bearing, 
ensure that:

  The engagement force applied by the belt tension (centre of 

shaft taper, see Fig. 10) must not exceed F

max per.

 = 2750 N.

  If the force engagement point shifts to the right (see Fig.6, 

small point), the force F

max per.

 reduces as per the following  

formula:

    F

max per.

 = 

         245 kNmm 

                    (90 mm + L

1

 [mm])

F

max= 

2750 N

M

bmax= 

245kNmm

L

1

(mm)

Fig. 6

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.

Summary of Contents for Bock FK50 Series

Page 1: ...ructions FK50 460 N FK50 555 N FK50 660 N FK50 775 N FK50 830 N FK50 980 N FK50 460 K FK50 555 K FK50 660 K FK50 775 K FK50 830 K FK50 980 K FKX50 460 N FKX50 555 N FKX50 660 N FKX50 775 N FKX50 830 N...

Page 2: ...se 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...

Page 3: ...nections 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 13 5 1 Preparations for start up 5 2 Pressure stren...

Page 4: ...age INFO Important information or tips on simplifying work WARNING Inadequately qualified personnel poses the risk of accidents the consequence being serious or fatal injury Work on compressors is the...

Page 5: ...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 inspected and approved...

Page 6: ...rned 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 arrang...

Page 7: ...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 Ester...

Page 8: ...uous 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 Acces...

Page 9: ...aring 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 A A a...

Page 10: ...ws 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 To preve...

Page 11: ...d on the dimension 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 r...

Page 12: ...otation 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 generally fit the spindl...

Page 13: ...r 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 nitrogen N2 Never...

Page 14: ...harge 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 refrigerant To avoid shifts in conc...

Page 15: ...g winter Therefore run the system every 4 weeks for 10 minutes 5 8 Avoiding liquid shocks To prevent liquid shocks The complete refrigeration plant must be correctly designed and executed The capacit...

Page 16: ...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 Evacuat...

Page 17: ...nts GEA standard oil types Recommended alternatives HFC e g R134a R407 R 404A Fuchs Reniso Triton SE 55 see also chap 6 3 Fuchs SEZ 32 68 80 Esso Mobil EAL Arctic 46 HCFC e g R22 Fuchs Reniso SP 46 se...

Page 18: ...hermostat Item No 07595 ATTENTION Capacity regulated operation alters the gas speeds and pressure ratios of the refrigerating plant Adjust the suction line routing and dimensioningaccordingly donotset...

Page 19: ...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 41 0 35 1 3 8 2...

Page 20: ...t wird Korrosionsschutz Verpackung f r sicheren Allgemeintoleranzen General tolerances Drawing No bis up to s 0f Dichtungssatz Druckschriften zu einem Satz zusammengefasst 1 packaging for safe transpo...

Page 21: ...charge 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 drain 1 4 NPTF G O...

Page 22: ...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 Safety of machinery General principles...

Page 23: ...products If you have any questions about installation operation and accessories please contact our technical service or specialist wholesaler and or our representative The GEA service team can be cont...

Page 24: ...ne 49 0 7022 9454 0 Fax 49 0 7022 9454 137 info gea com gea com GEA Group is a global engineering company with multi billion euro sales and operations in more than 50 countries Founded in 1881 the com...

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