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Flooded Type Water Cooled Screw Chiller Technical M

anual

Chapter IV After-sales Service

1. Main Parts of Unit

1.1 Main Pats of Cooling System

No.

Name of

Parts

Outline drawing and internal structural

drawing

Description

Screw

compressor

Compressor is used to

compress

low-temperature

low-pressure refrigerant

gas

evaporated

evaporator, make it into

high-temperature

high-pressure refrigerant

gas, then send it to

condenser and make

refrigerant to cycle.

This series product uses
semi-closed

screw

compressor

integrating

motor and compressor.

Shell and

tube

condenser

Water-cooled condenser
is

used

cool

high-temperature
high-pressure refrigerant
gas

discharged

compressor

and

exchange

heat

with

condensed

(liquefied)

heat

exchanger

and

cooling water.

Содержание ACWCSC-1080A5/MS

Страница 1: ...Flooded Type Water Cooled Screw Chiller Technical Manual Flooded Type Water Cooled Screw Chiller Technical Manual Central Air Conditioniner...

Страница 2: ...1 Requirements for Power Supply 26 4 2 Wiring Requirements 27 5 Commissioning of Unit 28 5 1 Preparation before Commissioning 28 5 2 Operation of Unit 30 Chapter III Operation and Maintenance 32 1 Op...

Страница 3: ...oded Type Water Cooled Screw Chiller Technical Manual 4 Failure Detection of Electrical Parts 66 5 Schematic Diagram of System and Electrical Schematic Diagram 67 6 Exploded Chart and Bill of Material...

Страница 4: ...less pressure drop which can be used and set with maintenance and replacement Dual layer casting wall structure effectively reduces operation noise Depressurized bearing housing design reduces content...

Страница 5: ...nit can select manually or automatically ON OFF at specified time which bring great convenience to users Unit can completely record the last twenty alarm records and occurrence time providing detailed...

Страница 6: ...code of R22 is omitted code of R407C is R code of R134a is R3 Serial number of energy efficiency G refers to unit model of high energy efficiency and serial number of common energy efficiency is omitt...

Страница 7: ...pressor exceed set value oil level protection of compressor shutdown under when oil level of compressor is too low anti freezing protection shutdown when temperature is too low failure protection of t...

Страница 8: ...capacity kW 280 315 340 405 460 510 550 620 kcal h 10 3 241 271 297 348 396 439 473 533 Cooling power kW 57 5 64 8 70 5 82 7 92 0 101 8 108 6 122 2 Max running current A 171 193 220 241 310 336 355 3...

Страница 9: ...sor Model semi hermetic screw type Quantity pcs 1 2 Startup mode Y shunt winding Power of oil heater W 300 Adjustment of cooling capacity stepless adjustment Evapo rator Type flooded type evaporator Q...

Страница 10: ...Y Power of oil heater W 300 Adjustment of cooling capacity stepless adjustment Evapo rator Type flooded type evaporator Quantity 1 Pipe diameter DN100 DN100 DN125 DN125 DN125 DN125 DN150 DN150 Cooling...

Страница 11: ...acity stepless adjustment Evap orator Type flooded type evaporator Quantity 1 Pipe diameter DN150 DN150 DN150 DN200 DN200 DN250 DN250 DN250 Cooling water flow m 3 h 122 1 137 6 154 8 175 4 211 5 244 2...

Страница 12: ...63 65 67 69 71 73 75 77 249 255 261 267 273 279 285 291 297 303 309 315 321 327 333 339 345 351 357 363 369 375 381 387 393 399 405 20 4 5 6 7 8 9 10 Specification of Cooling Capacity All Specificatio...

Страница 13: ...8 9 10 LSSLGS510MS 20 25 25 30 30 35 35 76 79 82 85 88 91 94 97 100 103 106 109 112 115 118 411 420 429 438 447 456 465 474 483 492 501 510 519 528 537 546 555 564 573 582 591 600 609 618 627 636 645...

Страница 14: ...909 20 4 5 6 7 8 9 10 LSSLGS800MS 20 25 25 30 30 35 35 1017 1005 993 981 969 957 945 117 121 125 129 133 137 141 145 149 153 157 161 165 169 173 177 181 185 189 645 657 669 681 693 705 717 729 741 753...

Страница 15: ...221 213 205 197 189 181 173 20 4 5 6 7 8 9 10 LSSLGS1420MD 20 25 25 30 30 35 35 1725 1701 1677 1653 1629 1605 1581 1557 1533 1509 1485 1461 1437 1413 1389 1365 1341 1317 1293 1269 1245 1221 1197 1173...

Страница 16: ...277 270 263 256 249 242 235 228 61 59 57 55 53 51 49 47 43 41 39 45 37 20 4 5 6 7 8 9 10 LSSLGS315MSG 20 25 25 30 30 35 35 403 396 389 382 375 368 361 354 347 340 333 326 319 312 305 298 291 284 277...

Страница 17: ...75 73 71 69 67 65 63 61 20 4 5 6 7 8 9 10 LSSLGS510MSG 20 25 25 30 30 35 35 70 73 76 79 82 85 88 91 94 97 100 103 106 411 420 429 438 447 456 465 474 483 492 501 510 519 528 537 546 555 564 573 582 59...

Страница 18: ...49 861 873 885 897 909 20 4 5 6 7 8 9 10 LSSLGS800MSG 20 25 25 30 30 35 35 1020 105 109 113 117 121 125 129 133 137 141 145 149 153 157 161 165 169 648 660 672 684 696 708 720 732 744 756 768 780 792...

Страница 19: ...5 1306 1327 1348 1369 1390 1411 1432 1453 1474 1495 1516 20 4 5 6 7 8 9 10 LSSLGS1420MDG 20 25 25 30 30 35 35 1810 1789 1768 1747 1726 1705 1684 1663 1642 1621 1600 1579 1558 1537 193 199 205 211 217...

Страница 20: ...1 269 277 285 293 301 309 317 325 333 341 349 357 365 373 1418 1446 1474 1502 1530 1558 1586 1614 1642 1670 1698 1726 1754 1782 1810 1838 1866 1894 1922 1950 1978 20 4 5 6 7 8 9 10 3 Outline Dimension...

Страница 21: ...60 DN125 DN125 ACWCSC 1380A5 MS G 3250 1200 1630 2730 1000 DN125 DN125 ACWCSC 1570A5 MS G 3250 1200 1670 2730 1000 DN125 DN125 ACWCSC 1740A5 MG 3250 1200 1670 2730 1000 DN125 DN125 ACWCSC 1740A5 M ACW...

Страница 22: ...mable rigid pedestal or concrete foundation that should be flat and stand weight of unit during operation 3 Sufficient drainage measures such as draining channel should be available for around the fou...

Страница 23: ...moved horizontally with gradient no more than 30 It s allowed to use crane When using crane it s required to use bottom lug hole Contact part between sling and unit should be separated with support I...

Страница 24: ...o install unit at basement or ground floor If it s required to install at high floor it s necessary to consider if basic structure of floor has sufficient strength to stand weight of chiller unit duri...

Страница 25: ...ected to unit and water system pipeline with anti vibration flexible joint and should also be self supported to prevent applying force on unit During installation welding should prevent damaging unit...

Страница 26: ...pipeline of cooling tower after it is connected with anti vibration flexible joint thermometer pressure gauge drain valve stop valve water filter check valve and target type flow controller 2 Water s...

Страница 27: ...lve and expansion water tank etc 2 Expansion water tank should be installed at the location 1 1 5m away from the highest point of system Capacity of water tank should be approximately 1 10 of water vo...

Страница 28: ...e should be installed at the lowest part of inlet and outlet water pipeline of unit Drainage pipe should be connected to the lowest side of system to discharge refrigeration water of unit from two out...

Страница 29: ...ted current of circuit breaker should be at least one class higher than max operating current of unit Setting current of transient overcurrent release shouldn t be more than 1 1 3 of short circuit cur...

Страница 30: ...espectively uses yellow green red light blue and yellow green wire corresponding to L1 L2 L3 N and PE 2 Communication line shouldn t tightly rely on power cord or be laid parallel with power cord 3 Co...

Страница 31: ...ged Measure with megohmmeter the insulation resistance of earth line at phase line end of power supply and measure the insulation resistance of earth line for motor winding resistance shouldn t be les...

Страница 32: ...denser intake and discharge cut off valve of compressor cut off valve at connection of high low pressure switch of compressor in refrigeration system should be opened to make refrigeration system smoo...

Страница 33: ...liminate system failure until actual operating current meets requirement Check if makeup device of cooling tower and expansion water tank is smooth and if automatic discharge valve in water system can...

Страница 34: ...pump which requires finding out cause and solving the problem Step 4 After starting add compressor and observe change of high low pressure compressor operates from 25 energy to 50 energy then compress...

Страница 35: ...icture upwards 2 Switch numerical value 1 Switch picture downwards 2 Switch numerical value 1 Switch picture leftwards 2 Return to navigation menu 3 Move cursor of numerical value field 1 Switch pictu...

Страница 36: ...s modified press to exit setting state 1 2 2 Description of Operating Picture Classification of man machine picture It can be divided into three classes by class authority permission that is managed b...

Страница 37: ...of main menu picture prompts main contents under this menu right half part displays main menus for upward downward leftward and rightward switching Fig 1 By pressing or key it will enter into another...

Страница 38: ...mperature adjustment adjustment of operating hours and parameter backup can be set Change is only allowable for professional maintenance personnel Fig 5 6 User Setting Picture It can directly enter in...

Страница 39: ...3 Prompt real time information of system operation Fig 1 Display relevant operating parameters of unit 1 Fig 2 Display relevant operating parameters of unit 2 Fig 3 Display pressure value of unit 1 Fi...

Страница 40: ...cture will pop up automatically display alarm content and record time Fig 3 Display historical record of alarm and record alarm content date and time of occurrence there are twenty alarm records total...

Страница 41: ...loading of unit 2 Temp gather it is used to set temperature sampling cycle 3 Temp range it is used to set temperature of water return temperature of water return plus control temperature of water retu...

Страница 42: ...1 If actual value of cooling water is higher than set value system will send alarm and shut down Fig 5 Fill in positive or negative offset according to actual measurement Fig 6 Fig 7 Exhaust overheat...

Страница 43: ...Pictures When this menu appears pressing will enter into the following pictures Setting picture of water return temperature of unit cooling Fig 1 Cooling control setting Water in temp XX X Load parame...

Страница 44: ...time Note setting of automatic ON OFF time doesn t judge second 0 second shall prevail if both hour and minute of ON OFF time are set as 0000 it indicates this function isn t enabled Fig 4 When autom...

Страница 45: ...temperature and outlet temperature of refrigeration water difference between condensation temperature and outlet temperature of cooling water according to comparison table of pressure and temperature...

Страница 46: ...each moving part of unit and if operation is set Check if high pressure and low pressure of cooling system is set Check operating current of motor and insulating resistance of unit are set Check if d...

Страница 47: ...scale formation degree of pipe pass of condenser Evaporator that connects open type system should also be checked According to result of checking it can be determined that if cleaning cycle and treat...

Страница 48: ...re in good conditions conduct airtight test on unit and check if copper pipe for heat transfer leaks conduct non destructive test on main weld seams longitudinal seam and circumferential seam of evapo...

Страница 49: ...perature low pressure refrigerant gas evaporated by evaporator make it into high temperature high pressure refrigerant gas then send it to condenser and make refrigerant to cycle This series product u...

Страница 50: ...ng part Orifice plate is used to generate pressure difference by utilizing change of orifice diameter and control flow pressure refrigerant 5 Electronic expansion valve throttle part Electronic expans...

Страница 51: ...valve is used to cut off or dredge refrigerant which is only applicable to full opening and full closing and can t be used to adjust and throttle 8 Globe valve Globe valve is used to cut off or dredg...

Страница 52: ...armature towards static iron core by overcoming reacting force of spring which drives main contact to close switches on circuit AUKSiliary junction acts accordingly 4 Therm al relay Thermal relay is u...

Страница 53: ...ically starts and shuts down at the set time ON OFF Control Process of Unit Electrify control cabinet and preheat oil heater of compressor unit can be started after oil heater is preheated at least ei...

Страница 54: ...when return temperature of cold water is in unloading area All compressors stop operation if return temperature of cold water reaches emergency shutdown area Time interval of previous ON OFF and next...

Страница 55: ...lue of overhigh protection for high pressure maintenance second class Abnormal time delay reaches 3s Conditions for exiting high pressure protection Manually reset and lock it after three times of acc...

Страница 56: ...S Conditions for exiting low pressure protection Manually reset pressure of air suction pressure sensor is higher than ultralow protection of low pressure plus 0 15 Overload Protection of Compressor P...

Страница 57: ...charge temperature Tdischarge is no more than ultrahigh discharge temperature minus 25 Temperature Sensor Failure Protection Prerequisites for temperature sensor failure protection Sensor is under ope...

Страница 58: ...ection of Compressor Prerequisites for oil level protection Compressor works shield in case of shutdown Switch of oil level protection disconnects and time delay protection reaches 30S Conditions for...

Страница 59: ...Flooded Type Water Cooled Screw Chiller Technical M anual 56 High Pressure Protection NO NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES YES NO YES YES...

Страница 60: ...Flooded Type Water Cooled Screw Chiller Technical M anual 57 Low Pressure Protection YES YES YES YES NO YES YES YES YES YES NO NO NO NO NO NO NO...

Страница 61: ...Flooded Type Water Cooled Screw Chiller Technical M anual 58 Discharge Temperature Protection NO NO NO NO NO NO YES YES YES YES YES...

Страница 62: ...Flooded Type Water Cooled Screw Chiller Technical M anual 59 Failure of Temperature Sensor NO YES YES YES NO NO...

Страница 63: ...Flooded Type Water Cooled Screw Chiller Technical M anual 60 Overload Protection of Compressor NO NO NO YES YES YES...

Страница 64: ...Flooded Type Water Cooled Screw Chiller Technical M anual 61 Protection of Water Flow Switch S YES YES YES YES YES NO NO NO NO NO...

Страница 65: ...Flooded Type Water Cooled Screw Chiller Technical M anual 62 Protection of High Low Pressure Difference NO NO NO NO YES YES YES YES YES...

Страница 66: ...r Cooled Screw Chiller Technical M anual 63 3 2 Analysis and Solution of Failure without Failure Code No Display on Controller Namely that controller doesn t display anything YES YES YES YES YES YES N...

Страница 67: ...Flooded Type Water Cooled Screw Chiller Technical M anual 64 Water Temperature can t reach Set Point Water temperature can t reach set point despite of longtime startup YES YES YES YES NO NO NO NO...

Страница 68: ...Flooded Type Water Cooled Screw Chiller Technical M anual 65 No Startup of Compressor After Starting Compressor doesn t start after pressing start key and normal time delay YES YES YES YES NO NO NO NO...

Страница 69: ...Winding resistance to shell resistance should be infinite 2 Contactor 1 Movable contact should act flexibly without blocking after contactor is manually pressed 2 Contact of contactor shouldn t be bu...

Страница 70: ...Flooded Type Water Cooled Screw Chiller Technical Manual 67 5 Schematic Diagram of System and Electrical Schematic Diagram Schematic Diagram of Screw Unit System with Flooded type Independent System...

Страница 71: ...essure gas comes into condenser in condenser high temperature high pressure refrigerant gas exchanges heat with cooling water in pipeline condenses into high temperature high pressure refrigerant liqu...

Страница 72: ...code Part Name Chinese Part Name English Quantity Remark 1 Compressor 1 2 Capillary pipe 1 3 Injection pump of oil return 1 4 Component of electric control cabinet 1 5 Oil separators horizontal type...

Страница 73: ...rk 1 Shell and tube condenser 1 2 Shell and tube evaporator 1 3 Body of electronic expansion valve 6 4 Coil of electronic expansion valves 6 5 Injection pump of oil return 2 6 Electric control 1 7 Oil...

Страница 74: ...stem breaks down users can dial service hotline of headquarters or number of local authorized maintenance station Maintenance personnel will quickly go to the spot and deal with the problem within 24...

Страница 75: ...________________________________________________________ ADD NO 1166 North MingGuang Road AUKS Technology park JiangShan Town Zhejiang P R China TEL 86 574 88220539 FAX 86 574 88220597 CODE 315191 URL...

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