GEA Bock HGX2/70-4 CO2 T, Assembly Instructions Manual

Page 1: ...F engineering for a better world GEA Refrigeration Technologies GEA Bock Compressor HGX2 CO2 T Assembly instructions HGX2 70 4 CO2 T HGX2 90 4 CO2 T HGX2 110 4 CO2 T HGX2 130 4 CO2 T GEA Bock GmbH 726...

Page 2: ...ompressor 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...

Page 3: ...of the lockable service connections 5 Electrical connection 15 5 1 Information for contactor and motor contactor selection 5 2 Standard motor designed for direct or part winding start 5 3 Basic circui...

Page 4: ...ng which enable 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 poten...

Page 5: ...pressurised machines and therefore require particular caution and care in handling The maximum permissible overpressure must not be exceeded even for testing purposes Risk of burns Depending on the op...

Page 6: ...n especially intensive cooling of the motor Therefore the motor temperature remains on a relatively low level especially at high load Oil pump independent of direction of rotation for reliable and saf...

Page 7: ...pe designation 2 Machine number 3 maximum operating current 4 Starting current rotor blocked Y Part winding 1 YY Part winding 1 and 2 5 ND LP max permissible operating pressure g Low pressure side HD...

Page 8: ...e of the shaded areas Thresholds should not be selected as design or continuous operation points Permissible ambient temperature 20 C 60 C Max permissible discharge end temperature 160 C Min oil tempe...

Page 9: ...re LP HP 1 100 150 bar 1 HGX2 130 4 CO2 T Applications limit 1 LP Low pressure HP High pressure Fig 5 Unlimited application range 3 Areas of application to Evaporation temperature C toh Suction gas su...

Page 10: ...icient load bearing capacity Single compressor preferably on vibration damper Compound connection basically rigid Provide adequate clearance for maintenance work Ensure adequate compressor ventilation...

Page 11: ...ut 4 4 Connecting the pipelines cutting ring system Tube preparation The tube has to be sawn in a right angle An angular tolerance of 1 is permissible Slightly trim the pipe ends inside and outside Fo...

Page 12: ...ompensators 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 A B Fig 13 Fig 14 4 7 Option cutting...

Page 13: ...lockwise Fig 18 Fig 19 4 8 Laying suction and pressure lines A rule of thumb Always lay the first pipe section starting from the shut off valve downwards and parallel to the drive shaft ATTENTION Prop...

Page 14: ...pening the service connection Spindle Turn 1 turn to the right clockwise Service connection opened shut off valve opened The connection which cannot be shut off is intended for safety devices Spindle...

Page 15: ...carry out work when the electrical system is disconnected from the power supply 5 1 Information for contactor and motor contactor selection All protection equipment switching and monitoring devices mu...

Page 16: ...nal box Y YY Compressors marked in this way are suitable for direct or part winding start The motor winding is divided into two parts part winding 1 70 and part winding 2 30 This winding devision redu...

Page 17: ...operty damage possible Failure to comply results in reversed fields of rotation and can cause motor damage After the motor has started up with part win ding 1 part winding 2 must be switched on after...

Page 18: ...1 L1 N N 43 43 11 12 14 L S M X2 1 2 3 4 5 6 7 F1 1 F1 2 8 R2 4A F2 S1 9 10 MP10 11 70 30 5 3 Basic circuit diagram for part winding start Fig 22 R1 Cold conductor PTC sensor motor winding R2 Thermal...

Page 19: ...F3 17 18 19 K1 P F4 20 K1 K1T K2 21 22 K1T P B1 23 24 K1 25 E1 26 L1 1 L2 1 L3 1 L1 2 N PE Q1 Main switch M1 Compressor motor K1 Mains contactor part winding 1 K2 Mains contactor part winding 2 K1T D...

Page 20: ...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...

Page 21: ...OFF Reconnect terminals 1 or 2 and or 3 or 4 4 Restore the power supply L1 or S1 OFF OFF ON MP10 is operational again Before start up troubleshooting or making changes to the control power circuit ch...

Page 22: ...ing depending on ambient temperature and amount of refrigerant charge it is possible that the pressure may rise and exceed permitted levels for the compressor Adequate precautions must be taken to pre...

Page 23: ...lity of dry ice formation when the system is operating during and after the filling process the shut off point of the low pressure switch should be set to a value of at least 5 2 bar A refrigerant sup...

Page 24: ...d off danger of oil liquid shocks reduced capacity of the refrigerating system Suitably adjusted pressure switches that switch off the compressor before reaching the maximum permissible operating pres...

Page 25: ...activates repeatedly check valve and replace if necessary as during blow off extreme condi tions can occure which may result in a permanent leak Always check system for refrigerant loss after activati...

Page 26: ...nt in the compressor while the system is at a standstill ATTENTION Slugging can result in damage to the compressor and cause refrigerant to leak WARNING Before starting any work on the compressor Swit...

Page 27: ...ntolerable excessive pressure For this reason the suction side LP and the high pressure side HP of the compressor have to be secured by decompression valves 7 5 Lubricants For operation with CO2 the G...

Page 28: ...CO 2 T 11 50 13 80 43 3 25 7 127 161 160 1 2 3 2 4 380 420 V Y YY 3 50 Hz PW 440 480 V Y YY 3 60 Hz PW PW Part Winding Winding ratio 70 30 Tolerance 10 relative to the mean value of the voltage range...

Page 29: ...NPTF B Connection discharge side not lockable 7 16 UNF B1 Connection discharge side lockable 7 16 UNF B2 Connection discharge side not lockable 1 8 NPTF E Connection oil pressure gauge 7 16 UNF F Oil...

Page 30: ...or HGX2 CO2 T complies with the basic require ments of Appendix II 1B of the Machinery Directive 2006 42 EC Applied harmonised standard EN 12693 2008 and the corresponding standards referenced A partl...

Page 31: ...ons about installation operation and accessories please contact our techni cal service or specialist wholesaler and or our representative The GEA Bock service team can be contacted by phone with a tol...

Page 32: ...49 7022 9454 137 refrigeration gea com www gea com We live our values Excellence Passion Integrity Responsibility GEA versity GEA Group is a global engineering company with multi billion euro sales a...