GEA Bock F88 Assembly Instructions Manual Download Page 19

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96440-02.2020-DGbRu

6.4  Shaft seal change

As changing the shaft seal involves opening the refrigerant circuit, this is recommended only if the 
seal is losing refrigerant. Replacing the shaft seal is described in the spare part kit concerned.

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.

6.3  Spare parts recommendation

Only use genuine GEA Bock spare parts!

6

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 Maintenance

6.1  Preparation

6.2 

Work to be carried out

To guarantee optimum operating safety and service life of the compressor, 

we recommend

 perform-

ing service and checking work at regular intervals of time:

 

Oil change: 

   - 

In series plants produced in the factory not mandatory.

   - 

 In field installations or operating in the application limit range, first oil change after approx. 
100 - 200 operating hours, then approx. every 3 years or 10,000 - 12,000 operating hours. 
Dispose of old oil according to the regulations, observe national regulations.

 

Annual checks:

 Oil level, tightness, running noise, pressures, temperatures, function of auxiliary 

devices such as a oil sump heater, pressure switch. Comply with the national regulations!

F88 / ...

2735

3235

Designation

Ref. No.

Ref. No.

Set of gaskets

81745

81746

Valve plate kit

81743

81744

Kit piston / connecting rod

80890

80891

Kit capacity regulator LR12

81636

81637

Oil pump kit

80116

Kit shaft seal

80897

Oil SP 46, 1 litre

02279

Oil SE 55, 1 litre

02282

Summary of Contents for Bock F88

Page 1: ...GEA Bock F88 F88 2735 FX88 2735 F88 3235 FX88 3235 Assembly instructions 96440 02 2020 Gb Translation of the original instructions...

Page 2: ...f 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 whic...

Page 3: ...l 4 7 Laying suction and discharge lines 4 8 Operating the shut off valves 4 9 Operating mode of the lockable service connections 4 10 Drive 5 Commissioning 16 5 1 Preparations for start up 5 2 Pressu...

Page 4: ...parable 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 recogn...

Page 5: ...ally explosive environments These assembly instructions describe the standard version of the compressor named in the title manufactured by GEA Bock GEA Bock refrigerating compressors are intended for...

Page 6: ...lt or coupling with oil pump lubrication 2 1 Short description Fig 1 Fig 2 Transport eyelet Valve plate Cylinder cover Suction shut off valve Leak oil drain hose Shaft end Base plate Dimension and con...

Page 7: ...BC12756A001 SE55 19 28 GEA Bock GmbH 72636 Frickenhausen Germany 1 Type designation 2 Machine number 3 Rotation speed minimum with a corresponding displacement 4 Rotation speed maximum with a correspo...

Page 8: ...own in the diagrams Please note the significance of the shaded areas Thresholds should not be selected as design or continuous operat ing points Permissible ambient temperature 20 C 60 C Max permissib...

Page 9: ...n range Reduced suction gas temperature Evaporating temperature C Condensing temperature C Suction gas superheat K Suction gas temperature C Permissible rotation speeds 500 1800 rpm Maximum permissibl...

Page 10: ...r as long as possible and prevent the ingress of air Check the compressor for transport damage before starting any work 4 1 Storage and transport Use transport eyelet Do not lift manually Use lifting...

Page 11: ...x Ma stab 1 1 Wasserwaage f r Indesign Der Lieferant mu sicherstellen dass die Ware in einwandfreiem Zustand angeliefert wird Korrosions schutz Verpackung f r sicheren Transport Rz 25 Rz 160 s 25 z y...

Page 12: ...sk of damages Overheating can damage the valve Remove the pipe supports from the valve for soldering Only solder using inert gas to inhibit oxidation products scale 4 6 Start unloader external An inte...

Page 13: ...ng and vibration behaviour Important Start unloader may only be employed during the starting phase Check the solenoid valve and the non return valve regularly for tightness In addition we recommend to...

Page 14: ...nter clockwise as far as it will go The shut off valve is then fully open and the service connection is closed Fig 23 Opening the service connection Spindle 1 2 1 rotation to the right clockwise The s...

Page 15: ...t GEA Bock recommends the direct drive with centring a coupling housing accessory ATTENTION Faulty alignment results in premature failure of the coupling and bearing damage CAUTION Risk of injury Moun...

Page 16: ...pressor 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...

Page 17: ...nter Therefore run the system every 4 weeks for 10 minutes CAUTION Risk of injury Contact with refrigerant can cause severe burns and skin damage Avoid contact with refrigerant and wear personal prote...

Page 18: ...icularly in critical systems e g several evaporator points measures are recommended such as replacement of liquid traps solenoid valve in the liquid line etc There should be no movement of coolant wha...

Page 19: ...rating safety and service life of the compressor we recommend perform ing service and checking work at regular intervals of time Oil change In series plants produced in the factory not mandatory In fi...

Page 20: ...ional regulations 7 Accessories When the compressor is at a standstill refrigerant diffuses into the lubrication oil of the compressor housing depending on pressure and ambient temperature This reduce...

Page 21: ...it pilot valve with sealing ring and tighten with 15 Nm Wet thread sides with ester oil Insert magnetic coil fasten it with knurled nut and connect it Fig 29 Before start up remove the cover at the ca...

Page 22: ...TENTION 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...

Page 23: ...x works sight glass top edge Oil charge sight glass centre Rotation speed range Oil sump heater Flywheel belt pulley Shaft coupling Discharge line DV Suction line SV m 3 h kg mm inch mm inch Ltr Ltr r...

Page 24: ...K Schauglas Sight glass L Anschluss W Connection th V Anschluss ls Connection oi P Anschluss l Connection oi Q Anschluss lt Connection oi L L tansc Typ type Teile Nr part no Typ type Teile Nr part no...

Page 25: ...ckable 7 16 UNF B Connection discharge side not lockable 1 8 NPTF B1 Connection discharge side lockable 7 16 UNF B2 Connection discharge side not lockable 7 16 UNF C Connection oil pressure safety swi...

Page 26: ...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 for...

Page 27: ...y questions about installation operation and accessories please contact our technical service or specialist wholesaler and or our representative The GEA Bock service team can be contacted by phone wit...

Page 28: ...49 0 7022 9454 0 Fax 49 0 7022 9454 137 gea com gea com contact 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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