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GEA HGZ7 Series, Assembly Instructions Manual, Page: 40 / 42

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GEA HGZ7 Series Assembly Instructions Manual Download Page 40

40

 D
 GB
 F
 E

09726-09.2015-DGbF

12

|

 Service

Dear customer,

GEA  Bock  compressors  are  top-quality,  reliable  and  service-friendly  quality  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 Bock service team can be contact

-

ed by phone with a 

toll-free hotline 00 800 / 800 000 88

 or via 

e-mail: [email protected].

Yours faithfully

GEA Bock GmbH
Benzstraße 7
72636 Frickenhausen
Germany

Summary of Contents for HGZ7 Series

Page 1: ...for a better world GEA Bock Compressor HGZ7 Assembly instructions HGZX7 1620 4 R404A R507 HGZX7 1620 4 R410A HGZX7 1860 4 R404A R507 HGZX7 1860 4 R410A HGZX7 2110 4 R404A R507 HGZX7 2110 4 R410A HGZ7...

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: ...ptional design 5 6 Pipe connections 5 7 Pipes 5 8 Laying suction ans pressure lines 5 9 Operating the shut off valves 5 10 Operating mode of the lockable service connections 6 Electrical connection 21...

Page 4: ...tant 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 therefore reserve...

Page 5: ...entially 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...

Page 6: ...mpressor with intermediate pressure shut off mounted and insulated 2 1 Short description standard version Dimension and connection values can be found in Chapter 10 Oil pump Suction shut off valve Nam...

Page 7: ...Fig 3 Liquid subcooler expansion valve solenoid valve filter drier and a sight glass mounted directly to the compressor piped and insulated Fig 4 2 3 Short description optional version mounted Dimensi...

Page 8: ...age 10 Voltage circuit frequency 11 Nominal rotation speed 12 Displacement VND low pressure stage VHD high pressure stage 13 Oil type filled at the factory 14 Terminal box protection type Electrical a...

Page 9: ...not be selected as design or continuous operation points Permissible ambient temperature 20 C 60 C Max permissible discharge end temperature 140 C Max permissible switching frequency 12x h A minimum...

Page 10: ...19 28 bar Design for other areas on request Fig 7 Fig 8 Fig 9 3 Areas of application R404A R507 R410A R22 1 LP low pressure MP intermediate pressure HP high pressure tO Evaporation temperature C tC C...

Page 11: ...the diagram by approximately calculating the subcooling temperature arising in the relevant operating conditions t0 tc Diagrams for determining the subcooling temperature at the output of the liquid s...

Page 12: ...rs 5 and compressed to the final pressure Liquid subcooler system The liquid subcooler system consists of the components liquid subcooler plate heat exchanger 6 expansion valve 7 sight glass 8 solenoi...

Page 13: ...drier 11 Damper pressure line 12 Oil separator 13 Non return valve 14 Condenser 15 Refrigerant receiver 16 Filter drier 17 Solenoid valve 18 Sight glass 19 Expansion valve evaporator 20 Evaporator 21...

Page 14: ...lled with inert gas 3 bar nitrogen 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...

Page 15: ...ve manufacturer s instructions INFO The points listed here represent general guidelines and information on how to pipe and connect the subcooler unit To perform this work technical knowledge and skill...

Page 16: ...ation line for expansion valve 7 16 UNF W Refrigerant injection connection M22 x 1 5 X Schrader connection for intermedie pressure gauge 7 16 UNF Y Position of temperature sensor unpainted Fig 20 Inte...

Page 17: ...FUE Fig 21 5 4 Installation example liquid subcooler with accessories GB INFO General notes Sensor lines wires etc should not be attached with cable binders directly to pipes or frames otherwise the t...

Page 18: ...y ATTENTION Damage possible Superheating can damage the valve Remove the pipe supports therefore from the valve for soldering Only solder using inert gas to inhibit oxidation products scale INFO A sol...

Page 19: ...acked and broken by severe vibrations Ensure a proper oil return Keep pressure losses to an absolute minimum A rule of thumb Always lay the first pipe section starting from the shut off valve downward...

Page 20: ...ections Fig 27 Opening the shut off valve Spindle turn to the left counter clockwise as far as it will go Shut off valve completely opened service connection closed The connection which cannot be shut...

Page 21: ...cted from the power supply 6 Electrical connection All protection devices and switching or monitoring units must be fitted in accordance with the local safety regulations and established specification...

Page 22: ...S M X2 1 2 3 4 5 6 7 F1 1 F1 2 8 R2 4A F2 S1 R2 9 R2 10 MP10 11 6 2 Circuit diagram for part winding start Fig 29 Q1 Main switch F1 1 Motor protection switch part winding 1 F1 2 Motor protection switc...

Page 23: ...K1 25 E1 26 L1 1 L2 1 L3 1 L1 2 N PE K1T Delay relay max 1 s slow release part winding 2 K2T Delay relay max 20 s slow release Open solenoid Y1 subcooler K3T Delay relay max 20 s slow release compres...

Page 24: ...results in opposed rotary fields and results in damage to the motor After the motor starts up via partial winding 1 partial winding 2 must be switched on after a maximum delay of one second Failure t...

Page 25: ...1 and H2 go out INFO Connect the trigger unit MP10 in accordance with the circuit diagram Protect the trigger unit with a delayed action fuse F of max 4 A In order to guarantee the protection function...

Page 26: ...nection 1 or 2 Release the hot gas temperature sensor if installed 3 or 4 2 Restore the power supply L1 or S1 ON Function check of motor temperature sensor operational ON Function check of hot gas tem...

Page 27: ...r starts up the refrigerant contained in the oil evaporates out throught the reduction in pressure The consequences can be foaming and migration of the oil causing oil shocks under certain circumstanc...

Page 28: ...ressure strength test Test the refrigeration circuit according to EN 378 2 or a corresponding safety standard 7 3 Leak test Carry out the leak test of the refrigerating system in accordance with EN 37...

Page 29: ...uch as goggles and protective gloves ATTENTION Avoid overfilling the system with refrigerant To avoid shifts in concentration zeotropic refrigerant blends must always only be filled into the refrigera...

Page 30: ...roperly designed All components must be compatibly rated with each other with regard to output particularly the evaporator and expansion valves Suction gas superheat at the compressor input should be...

Page 31: ...event air from infiltrating the system After maintenance has been performed Connect safety switch Evacuate compressor Release switch lock 8 2 Work to be carried out In order to guarantee optimum opera...

Page 32: ...compressors are divided into an LP and an HP compressor stage Different valve plate designs are required because of the different ducts in the individual compressor stages Fig 32 WARNING Thevalveplate...

Page 33: ...ns 8 5 Extract from the lubricants table The oil type filled as standard in the factory is marked on the name plate This oil type should be used as a preference Alternatives are stated in the extract...

Page 34: ...s A ll specifications are based on the average of the voltage range 380 420 V Y YY 3 50 Hz PW 440 480 V Y YY 3 60 Hz PW Winding ratios 50 50 HGZ7 1620 4 6 93 7 46 9 112 5 56 2 50 27 0 175 269 294 35 1...

Page 35: ...rrosion prevention The supplier has to ensure the delivery of parts Transport 13 01 15 Wurster 0g lsumpfheizung aus Verdichter entfernt Auf Bl 3 Zubeh r ldr Sich Schalter entfernt 9155 Layh Weitergabe...

Page 36: ...i o n s u c t i o n s i d e A 2 A n s c h l u M i t t e l d r u c k n i C o n n e c t i o n m e d i u m p r e A 3 A n s c h l u M i t t e l d r u c k n i C o n n e c t i o n m e d i u m p r e B A n s...

Page 37: ...r 1 4 NPTF E Connection oil pressure gauge 7 16 UNF F Oil drain M22 x 1 5 FS Sight glass liquid line 12 mm H Oil charge plug M22 x 1 5 J Oil sump heater accessories M22 x 1 5 K Sight glass 3 hole M6 L...

Page 38: ...or HGZ7 complies with the basic requirements of Appendix II 1B of the Machinery Directive 2006 42 EC Applied harmonised standard EN 12693 2008 and the corresponding standards referenced A partly compl...

Page 39: ...t piping of the refrigerant compressors HGZX7 2110 4 R404A HGZX7 2110 4 R410A und HGZ7 2110 4 R22 agrees with the Pressure Equipment Directive 97 23 EG dated 29 May 1997 Valid for Category I piping Ev...

Page 40: ...any 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 contact ed by phone...

Page 41: ...D GB F E 41 09726 09 2015 DGbF...

Page 42: ...ngineering company with multi billion euro sales and operations in more than 50 countries Founded in 1881 the company is one of the largest providers of innovative equipment and process technology GEA...

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