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Checking the Inputs and Outputs

ESIE11-02

3–18

Part 3 – Troubleshooting

3.6

Checking the Power Supply and Fuses: EUWA*5-24KBZW1 and
EUWY*5-24KBZW1

Overview

The table below contains an overview of the circuits, the voltage and their fuse codes.

Circuit

Wiring code

Type / voltage

Fuse code

Main supply

L1 + L2 + L3 + N

3 phases / 400 V AC

F1+F2+F3

Control circuit I/O PCB

L1 + N
L3 + N

1 phase / 230 V AC
1 phase / 230 V AC

F4
F1U

Control circuit controller

TR1-sec.

24 V AC

F3U, F5U

Control circuit (pump) for
EUWAN5-24KBZW1

X1M 8-7

24 V AC

Fan circuit for
EUWA*5-12KBZW1

L1 + N

1 phase / 230 V AC

Fan circuit for
EUWA*18-24KBZW1

L1 + N

1 phase / 230 V AC

Содержание EUWY 24KBZW1 Series

Страница 1: ...ESIE11 02 Service Manual EUWA 5 24KBZW1 R 407C EUWY 5 24KBZW1 R 407C Small air cooled chillers and heat pump...

Страница 2: ......

Страница 3: ...8KBZW1 1 39 1 16 Electrical Specifications EUWY 10 12KBZW1 1 41 1 17 Electrical Specifications EUWY 16 20KBZW1 1 43 1 18 Electrical Specifications EUWY 24KBZW1 1 45 1 19 Outlook Drawing EUWAN5 8KBZW1...

Страница 4: ...perational Range EUWA 5 24KBZW1 2 4 1 3 Operational Range EUWY 5 24KBZW1 2 5 1 4 Operational Flow Chart 2 7 1 5 Compressor Working Status 2 8 1 6 Compressor Timers 2 9 1 7 Thermostat Control EUWA 5 24...

Страница 5: ...24KBZW1 3 4 1 3 Inputs outputs overview of the I O PCB EUWA 5 24KBZW1 and EUWY 5 24KBZW1 3 5 2 Malfunction Indications and Safeties Overview 2 1 What Is in This Chapter 3 7 2 2 Malfunction Indication...

Страница 6: ...4 Commissioning and Test Run 1 Pre Test Run Checks 1 1 What Is in This Chapter 4 3 1 2 General Checks 4 4 1 3 Water Piping Checks 4 5 1 4 External Static Pressure EUWA 5 24KBZW1 4 8 1 5 External Stat...

Страница 7: ...at Is in This Chapter 4 29 2 2 Test Run and Operation Data for EUWA 5 24KBZW1 and EUWY 5 24KBZW1 4 30 Part 5 Maintenance 1 Maintenance 1 1 What Is in This Chapter 5 3 1 2 Maintenance of the Main Parts...

Страница 8: ...ESIE11 02 vi Table of Contents 3 1 4 5...

Страница 9: ...ZW1 without hydraulic module naked model EUWAP5 24KBZW1 with hydraulic module pump and expansion vessel EUWAB5 24KBZW1 with hydraulic module buffer tank pump and expansion vessel EUWY 5 24KBZW1 The Da...

Страница 10: ...Introduction ESIE11 02 viii 3 1 4 5...

Страница 11: ...ntroduction This part contains an outline of all the relevant elements in the EUWA 5 24KBZW1 and EUWY 5 24KBZW1 installation What is in this part This part contains the following chapters Chapter See...

Страница 12: ...ESIE11 02 1 2 Part 1 System Outline 3 1 1 5...

Страница 13: ...WY 5 8KBZW1 1 17 1 7 Technical Specifications EUWY 10 12KBZW1 1 20 1 8 Technical Specifications EUWY 16 20KBZW1 1 23 1 9 Technical Specifications EUWY 24KBZW1 1 26 1 10 Correction factors for glycol 1...

Страница 14: ...B10 12KBZW1 1 52 1 25 Outlook Drawing EUWAN16KBZW1 EUWYN16KBZW1 1 53 1 26 Outlook Drawing EUWAP16KBZW1 EUWYP16KBZW1 1 54 1 27 Outlook Drawing EUWAB16KBZW1 EUWAB16KBZW1 1 55 1 28 Outlook Drawing EUWAN2...

Страница 15: ...at exchanger No x model 1 x AC70X 24HX 1 x AC70X 34HX Min water volume in the system 1 54 l 85 l Water flow rate Min 16 l min Max 65 l min Min 26 l min Max 102 l min Nominal water flow 32 l min 51 l m...

Страница 16: ...x w x d 1230 x 1290 x 734 mm 1230 x 1290 x 734 mm Weight Machine weight 150 kg 168 kg 180 kg 215 kg 229 kg 241 kg Operation weight 152 kg 171 kg 239 kg 218 kg 232 kg 300 kg Casing Colour Ivory white...

Страница 17: ...ows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Operation range The nominal operation range cove...

Страница 18: ...anger No x model 1 x AC70X 40HX 1 x AC70X 50HX Min water volume in the system 1 108 l 126 l Water flow rate Min 32 l min Max 129 l min Min 38 l min Max 152 l min Nominal water flow 64 l min 76 l min N...

Страница 19: ...ht Machine weight 245 kg 259 kg 271 kg 248 kg 262 kg 274 kg Operation weight 248 kg 262 kg 330 kg 251 kg 265 kg 335 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated...

Страница 20: ...in the field ISO 9614 Nominal conditions The nominal conditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor...

Страница 21: ...odel 1 x AC230X 38HX 1 x AC230X 50HX Min water volume in the system 1 88 l 111 l Water flow rate Min 53 l min Max 212 l min Min 67 l min Max 267 l min Nominal water flow 106 l min 134 l min Nom water...

Страница 22: ...21 x 2580 x 734 mm 1541 x 2580 x 734 mm Weight Machine weight 430 kg 448 kg 460 kg 490 kg 508 kg 520 kg Operation weight 436 kg 457 kg 525 kg 496 kg 518 kg 586 kg Casing Colour Ivory white Munsell cod...

Страница 23: ...lows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Operation range The nominal operation range cov...

Страница 24: ...nger No x model 1 x AC230X 58HX Min water volume in the system 1 132 l Water flow rate Min 79 l min Max 317 l min Nominal water flow 158 l min Nom water pressure drop 22 kPa Insulation material Climaf...

Страница 25: ...fety valve __ 3 bar Dimensions h x w x d 1541 x 2580 x 734 mm Weight Machine weight 496 kg 514 kg 526 kg Operation weight 503 kg 524 kg 592 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 M...

Страница 26: ...llows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Operation range The nominal operation range co...

Страница 27: ...nger No x model 1 x AC70X 34HX 1 x AC70X 40HX Min water volume in the system 1 43 l 82 l Water flow rate Min 21 l min Max 68 l min Min 31 l min Max 106 l min Nominal water flow Cooling 26 l min Heatin...

Страница 28: ...ne weight 163 kg 181 kg 193 kg 227 kg 241 kg 253 kg Operation weight 165 kg 184 kg 252 kg 230 kg 244 kg 312 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated galvani...

Страница 29: ...conditions The nominal conditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Op...

Страница 30: ...t exchanger No x model 1 x AC70X 50HX Min water volume in the system 1 100 l 119 l Water flow rate Min 38 l min Max 137 l min Min 45 l min Max 155 l min Nominal water flow Cooling 60 l min Heating 69...

Страница 31: ...ight 258 kg 272 kg 284 kg 258 kg 272 kg 284 kg Operation weight 261 kg 275 kg 343 kg 261 kg 275 kg 343 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated galvanised s...

Страница 32: ...l conditions The nominal conditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump O...

Страница 33: ...38HX 1 x AC230X 50HX Min water volume in the system 1 82 l 100 l Water flow rate Min 61 l min Max 212 l min Min 75 l min Max 275 l min Nominal water flow Cooling 98 l min Heating 106 l min Cooling 12...

Страница 34: ...ine weight 455 kg 473 kg 485 kg 516 kg 534 kg 546 kg Operation weight 461 kg 482 kg 550 kg 522 kg 544 kg 612 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated galvan...

Страница 35: ...conditions The nominal conditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Op...

Страница 36: ...0X 58HX Min water volume in the system 1 119 l Water flow rate Min 89 l min Max 309 l min Nominal water flow Cooling 149 l min Heating 155 l min Nom water pressure drop Cooling 19 kPa Heating 22 kPa I...

Страница 37: ...t 522 kg 544 kg 612 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated galvanised steel plate Sound power level 2 81 dBA Safety devices Low pressure switch High press...

Страница 38: ...l conditions The nominal conditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump O...

Страница 39: ...2 General Outline Part 1 System Outline 1 29 3 1 4 5 1 10 Correction factors for glycol Correction factors The illustration below shows the correction factors for glycol for EUWA 5 24KBZW1 and EUWY 5...

Страница 40: ...ains glycol freezing points for different glycol concentrations Pattern Description Ethylene glycol Propylene glycol Kc Correction on cooling capacity Ki Correction on power input Kf Correction on flo...

Страница 41: ...63 5 A 97 9 A 99 2 A Nominal running current 7 7 A 9 0 A 13 6 A 14 9 A Max running current 11 2 A 12 5 A 16 9 A 18 2 A Recommended fuses 3 x 20 gL gG 3 x 20 gL gG 3 x 25 gL gG 3 x 25 gL gG Fans Phase...

Страница 42: ...ditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fan pumps Operation range The operation...

Страница 43: ...39 A 140 A Nominal running current 15 9 A 17 2 A 20 5 A 21 8 A Max running current 19 9 A 21 2 A 26 9 A 28 2 A Recommended fuses 3 x 25 gL gG 3 x 32 gL gG 3 x 32 gL gG 3 x 40 gL gG Fans Phase 1 Voltag...

Страница 44: ...ditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fan pumps Operation range The operation...

Страница 45: ...urrent 27 2 A 29 2 A 31 8 A 33 8 A Max running current 33 8 A 35 8 A 39 8 A 41 8 A Recommended fuses 3 x 40 gL gG 3 x 50 gL gG 3 x 50 gL gG 3 x 50 gL gG Fans Phase 1 Voltage 230 V Max running current...

Страница 46: ...ditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fan pumps Operation range The operation...

Страница 47: ...A Nominal running current 41 0 A 43 7 A Max running current 53 8 A 56 5 A Recommended fuses 3 x 63 gL gG 3 x 63 gL gG Fans Phase 1 Voltage 230 V Max running current 5 8 A Compressor Phase 3 Voltage 40...

Страница 48: ...ditions are as follows Entering leaving evaporator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fan pumps Operation range The operation...

Страница 49: ...9 A 99 2 A Nominal running current cooling 7 7 A 9 0 A 13 6 A 14 9 A Max running current 11 2 A 12 5 A 16 9 A 18 2 A Recommended fuses 3 x 20 gL gG 3 x 20 gL gG 3 x 25 gL gG 3 x 25 gL gG Fans Phase 1...

Страница 50: ...rator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Operation range The nominal operation range covers A leaving evaporator wa...

Страница 51: ...A 139 A 140 A Nominal running current cooling 15 9 A 17 2 A 20 5 A 21 8 A Max running current 19 9 A 21 2 A 26 9 A 28 2 A Recommended fuses 3 x 25 gL gG 3 x 32 gL gG 3 x 32 gL gG 3 x 40 gL gG Fans Pha...

Страница 52: ...rator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Operation range The nominal operation range covers A leaving evaporator wa...

Страница 53: ...A 113 A 115 A Nominal running current cooling 27 2 A 29 2 A 31 8 A 33 8 A Max running current 33 8 A 35 8 A 39 8 A 41 8 A Recommended fuses 3 x 40 gL gG 3 x 50 gL gG 3 x 50 gL gG 3 x 50 gL gG Fans Pha...

Страница 54: ...rator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Operation range The nominal operation range covers A leaving evaporator wa...

Страница 55: ...0 Unit Starting current 139 A 142 A Nominal running current cooling 41 0 A 43 7 A Max running current 53 8 A 56 5 A Recommended fuses 3 x 63 gL gG 3 x 63 gL gG Fans Phase 1 Voltage 230 V Max running c...

Страница 56: ...rator water temperature 12 5 7 C Ambient air temperature 35 C Power input is total input Compressor control circuit fans pump Operation range The nominal operation range covers A leaving evaporator wa...

Страница 57: ...4X 15 SERVICE SPACE FILTERKIT delivered with the unit No Component No Component 1 Air heat exchanger 11 Air purge 2 Compressor 12 Pressure port 3 Switch box 13 Ball valve 1 1 4 BSP 4 Main switch 14 Wa...

Страница 58: ...o Component No Component 1 Air heat exchanger 15 Manometer water 2 Compressor 16 Pressure port 3 Switch box 17 Ball valve 1 1 4 BSP 4 Main switch 18 Water filter 1 1 4 BSP 5 Pump switch 19 Pump 6 Digi...

Страница 59: ...ent No Component 1 Air heat exchanger 15 Manometer water 2 Compressor 16 Pressure port 3 Switch box 17 Ball valve 1 1 4 BSP 4 Main switch 18 Water filter 1 1 4 BSP 5 Pump switch 19 Pump 6 Digital disp...

Страница 60: ...TION 4X 15 SERVICE SPACE FILTERKIT delivered with the unit No Component No Component 1 Air heat exchanger 11 Air purge 2 Compressor 12 Pressure port 3 Switch box 13 Ball valve 1 1 4 BSP 4 Main switch...

Страница 61: ...t No Component No Component 1 Air heat exchanger 15 Manometer water 2 Compressor 16 Pressure port 3 Switch box 17 Ball valve 1 1 4 BSP 4 Main switch 18 Water filter 1 1 4 BSP 5 Pump switch 19 Pump 6 D...

Страница 62: ...omponent No Component 1 Air heat exchanger 15 Manometer water 2 Compressor 16 Pressure port 3 Switch box 17 Ball valve 1 1 4 BSP 4 Main switch 18 Water filter 1 1 4 BSP 5 Pump switch 19 Pump 6 Digital...

Страница 63: ...15 SERVICE SPACE FILTERKIT delivered with the unit No Component No Component 1 Air heat exchanger 11 Air purge 2 Compressor 12 Pressure port 3 Switch box 13 Ball valve 1 1 4 BSP 4 Main switch 14 Wate...

Страница 64: ...d with the unit No Component No Component 1 Air heat exchanger 15 Pressure port 2 Compressor 16 Ball valve 3 Switch box 17 Water filter 4 Main switch 18 Pump 5 Pump switch 19 Regulation valve 6 Digita...

Страница 65: ...he unit No Component No Component 1 Air heat exchanger 15 Pressure port 2 Compressor 16 Ball valve 3 Switch box 17 Water filter 4 Main switch 18 Pump 5 Pump switch 19 Regulation valve 6 Digital displa...

Страница 66: ...N FIXATION 4X 15 CAUTION FOR FAN SERVICE SPACE FILTERKIT delivered with the unit No Component No Component 1 Air heat exchanger 11 Air purge 2 Compressor 12 Pressure port 3 Switch box 13 Ball valve 4...

Страница 67: ...ivered with the unit No Component No Component 1 Air heat exchanger 15 Pressure port 2 Compressor 16 Ball valve 3 Switch box 17 Water filter 4 Main switch 18 Pump 5 Pump switch 19 Regulation valve 6 D...

Страница 68: ...with the unit No Component No Component 1 Air heat exchanger 15 Pressure port 2 Compressor 16 Ball valve 3 Switch box 17 Water filter 4 Main switch 18 Pump 5 Pump switch 19 Regulation valve 6 Digital...

Страница 69: ...he internal refrigeration circuit The water piping is considered to be a common practice and is therefore not described Overview This chapter contains the following topics Topic See page 2 2 Installat...

Страница 70: ...sure a filter is installed in front of the water inlet of the plate heat exchanger The plate heat exchangers are sensitive to dirt and small particles The mesh opening of the filter is max 0 5 mm T1...

Страница 71: ...on below shows the functional diagram of the refrigeration circuit of EUWA 5 24KBZW1 It is also applicable for glycol applications REFRIGERANT SIDE WATER SIDE N MODELS B MODELS P MODELS P B MODELS N P...

Страница 72: ...e air is discharged upwards 4 Fan Direct driven single or two speed motor 5 Expansion valve The thermostatic expansion valve is set up to control the superheat between 5 C and 7 C 6 Low pressure switc...

Страница 73: ...of the chilled water becomes too low in order to prevent the water from freezing during operation f Strainer This strainer prevents dirt particles from entering the water circuit g Flow switch The fl...

Страница 74: ...ional diagram of the refrigeration circuit of EUWY 5 24KBZW1 It is also applicable for glycol applications REFRIGERANT SIDE WATER SIDE N MODELS B MODELS P MODELS P B MODELS N P MODELS HEATING EVAPORAT...

Страница 75: ...il type Hi X tubes and PE coated waffle louvre fins are used The air is discharged upwards 4 Fan Direct driven single or two speed motor 5 Expansion valve The thermostatic expansion valve is set up to...

Страница 76: ...nnect a pressure gauge d Water tempera ture sensor The water temperature sensors are used to control the thermostat function at the heat exchanger inlet e Freeze up sensor This protection device shuts...

Страница 77: ...of the EUWA 5 24KBZW1 and EUWY 5 24KBZW1 Switch box layout Wiring diagram Overview This chapter contains the following topics Topic See page 3 2 Main Functions of the EUWA 5 24KBZW1 and EUWY 5 24KBZW1...

Страница 78: ...oint ID3 GND X6A X7A S1HP S1HP High pressure switch X8A X9A Q1D Q2D Discharge protector X10A X11A K4S K55 Thermal overcurrent ID4 GND X63A X64A S4LP S5LP Low pressure switch ID5 GND X3M S9S Remote ON...

Страница 79: ...11 02 Wiring Layout Part 1 System Outline 1 69 3 1 4 5 3 3 Switch Box Layout EUWA 5 24KBZW1 and EUWY 5 24KBZW1 Double circuit layout The illustration below shows the switch box layout for a double cir...

Страница 80: ...below describes the components Wiring diagram symbol Description C1 C2 C3 C4 AC motor capacitors 12 F TR1 TR2 Power supply transformator K1P Pump contactor K6S Pump K4S K5S Circuit 1 circuit 2 K1M K2M...

Страница 81: ...chiller types EUWA 5 24KBZW1 and EUWY 5 24KBZW1 X11 X73A X50A X1A X19A X18A X28A X80A X79A X2A X4A X78A X15A X14A X13A X12A X23A X24A X21A X22A Y3R H6P H5P H4P H3P ESH H3P H4P H5P H6P Y3R L N ESH X1M...

Страница 82: ...otor 1 of circuit 1 X13A Q12F Thermal protector of fanmotor 2of circuit 1 X14A Q21F Thermal protector of fanmotor 1 of circuit 2 X15A Q22F Thermal protector of fanmotor 2 of circuit 2 X16A Y1S Liquid...

Страница 83: ...tcut X70A X2 C5 No5 To A1P C5 No5 X71A X1 B1 2 3 Gnd ID1 ID2 ID3 ID4 ID5 Gnd To A1P X1 B1 B2 B3 Gnd ID1 ID2 ID3 ID4 ID5 Gnd X73A X73A SER Serial communication X78A E3H Evaporator heater tape X79A E4H...

Страница 84: ...A Dipswitch 1 S2A Dipswitch 2 1 0 1 circ 1 2 circ 1 Defrost setting only for EUWY 5 24KBZW1 0 Start condition 1 fan defrost 1 5HP 8HP 16HP 1 Start condition 2A B fan defrost 2 10HP 12HP 20HP 24HP 2 3...

Страница 85: ...circuit 2 S21HP S22HP PCB Power supply card A71P fuse for pumpcontactor F6 fuse I O PCB fuse controller PCB F3U F1U PCB softstarter for circuit 1 buffertank 55l heater field heater E6H E5H H5P indicat...

Страница 86: ...Wiring Layout ESIE11 02 1 76 Part 1 System Outline...

Страница 87: ...rmation can be used as background information for troubleshooting This part also contains an extensive overview of the functioning of the controllers Knowledge of the controllers is indispensable for...

Страница 88: ...ESIE11 02 2 2 Part 2 Functional Description 3 1 2 5...

Страница 89: ...nal Range EUWA 5 24KBZW1 2 4 1 3 Operational Range EUWY 5 24KBZW1 2 5 1 4 Operational Flow Chart 2 7 1 5 Compressor Working Status 2 8 1 6 Compressor Timers 2 9 1 7 Thermostat Control EUWA 5 24KBZW1 a...

Страница 90: ...he operational range illustration above ZL ZH Water Glycol Leaving evaporator water temp C Outdoor temp CDB OPTION STANDARD STANDARD Pattern Abbrevia tion Description Standard operation Pull down area...

Страница 91: ...range in cooling mode The illustration below shows the operational range in cooling mode of the EUWY 5 24KBZW1 Operational range in heating mode The illustration below shows the operational range in h...

Страница 92: ...range illustration above Pattern Abbrevia tion Description Standard operation Pull down area Protection water circuit against freezing If the units operate below 5 C and are installed in a draughty sp...

Страница 93: ...erational Flow Chart Flow chart The flow chart below describes the operation of EUWA 5 24KBZW1 Flow chart The flow chart below describes the operation of EUWY 5 24KBZW1 Power ON Start cooling Thermost...

Страница 94: ...r Working Status Compressor working status The table below gives the conditions of the compressor status The compressor is ON when The compressor is OFF when The ON button is pressed AND Thermostat ON...

Страница 95: ...mers of the compressor Timer Interval s Use Guard timer 60 The timer starts counting down when the scroll compressor is switched OFF During the countdown the compressor can not be restarted Anti recyc...

Страница 96: ...difference r01 Cooling set point default 12 C r03 Heating set point default 30 C only for EUWY 5 24KBZW1 r21 Cooling set point 2 r22 Heating set point 2 only for EUWY 5 24KBZW1 27 C 30 C r02 r04 r01...

Страница 97: ...operation of the fan motors depends on the ambient temperature The table below contains the fan settings for different ambient temperatures Selection of fan setting Fan setting 1 or Fan setting 2 is s...

Страница 98: ...in heating mode The table below describes the fan relay management in heating mode This is only valid for the heat pump EUWY 5 24KBZW1 Fan relay 1 Fan relay 2 Fan relay 3 Result RY4 RY24 RY5 RY25 RY12...

Страница 99: ...1 1 9 Fan Working EUWA 5 24KBZW1 and EUWY 5 24KBZW1 Working principle The fan runs parallel with the compressor operation The operation is not steered by the microchiller controller but by the I O PC...

Страница 100: ...4 5 1 10 Crankcase Heater Functional description The crankcase heater should always work when the compressor is in the OFF status The crankcase heater should be used with compressors in order to avoi...

Страница 101: ...ater tape management Heater tape control The I O board controls the function of the evaporator heater tape No separate power supply is foreseen for the evaporating heater tape When the main switch is...

Страница 102: ...nctional Description ESIE11 02 2 16 Part 2 Functional Description 3 1 2 4 5 1 12 Pump Steering Pump steering A pumpcontact should be present with pumplead 15 s and pumplag 0 s timers taken into accoun...

Страница 103: ...he table below contains the characteristics of the freeze up protection for the glycol option Characteristics Freeze up protection Control device Sensor Diagram name R4T Activation Outlet water temper...

Страница 104: ...I O PCB and there will be no defrost indication on the controller If the defrost function for circuit 1 is active circuit 2 is stopped by opening DO10 If the defrost function for circuit 2 is active c...

Страница 105: ...d M12F off M21F Medium and M22F off Open Closed Open If Ambient at defrost start time 5 C AND ComprMinFanC1 2 1 M11F off and M12F off M21F off and M22F off Open Open Open If Ambient at defrost start t...

Страница 106: ...2A TcoilC1 2 0 6 x Tamb 10 C AND TcoilC1 2 10 C AND Tamb 50 C TimConditional OR Start condition 2B TcoilC1 2 0 6 x Tamb 1 C AND TcoilC1 2 1 C AND Tamb 50 C TimConditional AND TimCompMin Stop condition...

Страница 107: ...timer goes to 0 Then defrost requests start 150 s TimOperate1 2 The minimum time that the defrost condition 2B must be met to start the defrost cycle This timer is accumulated time Start or continue t...

Страница 108: ...itched off Continue of timer Compressor on by thermostat DI3M1Cdetect closed Stop of timer Compressor switch off by thermostat DI3M1Cdetect open End of timer goes to 0 Now defrost is possible 20 min a...

Страница 109: ...m defrost cycles without and with compressor stop Defrost cycle Start TimDefrMin Start TimDefrMax Start TimDefrMask Time Yes No ON OFF ON OFF Defrost BusyC1 Compr DORev Valve Defrost cycle Start TimDe...

Страница 110: ...is set to 1 active the unit can be switched on or off as follows When the remote on off switch is opened the unit is switched off and it is not possible to switch the unit on off by pressing the D or...

Страница 111: ...KBZW1 and EUWY 5 24KBZW1 Overview This chapter contains the following topics Topic See page 2 2 The Digital Controller 2 26 2 3 Start Stop 2 29 2 4 What Happens in Case of an Alarm or a Warning 2 31 2...

Страница 112: ...iendly way to configure use and maintain the unit The digital controller consists of A numeric display 4 keys 4 LEDs used to provide extra user information Each key except for the s key combines two f...

Страница 113: ...for 5 seconds Switch unit on off in heat ing mode Press once Direct access to readout menu sensor b01 b02 b03 Press once Select previous sensor parameter Press once Select previous param eter group or...

Страница 114: ...oup or parameter different LEDs related to the parameter group or parameter are displayed Example The LEDs F and G are displayed when accessing a parameter group or when accessing parameters directly...

Страница 115: ...e is active proceed as follows Press the C key for approximately 5 seconds the F LED will be extinguished Remote start stop remote cool heat The procedure to start or stop the unit depends on the sett...

Страница 116: ...ollowing happens Local h07 0 Remote h0b 1 Switch remote cool heat Switch on the unit automatically Only cool heat selection is possible If start stop set up is and cool heat set up is then to Stage De...

Страница 117: ...Protects the unit Gives additional service information Description The unit is shut down The alarm is energized The H symbol is displayed The display starts flashing alternately showing the alarm code...

Страница 118: ...t parameters accessible b b01 Evaporator inlet water temperature 0 1 C R D 102 A b02 Evaporator outlet water temperature 0 1 C R D 103 A b03 Not used 0 1 C R D 104 A c c07 Time delay between pump star...

Страница 119: ...y to return to the main display If during the procedure no buttons are pressed for 30 seconds the displayed parameter code or value will start flashing After another 30 seconds without pressing any bu...

Страница 120: ...ing the procedure no buttons are pressed for 30 seconds the displayed parameter code or value will start flashing After another 30 seconds without pressing any buttons the controller automatically ret...

Страница 121: ...e b03 Not used c10 Total running hours of the compressor 1 c11 Total running hours of the compressor 2 c15 Total running hours of the pump REMARKS The parameters b01 b02 and b03 can also be consulted...

Страница 122: ...tion 3 1 2 4 5 2 6 Reading or Adjusting Parameter Settings the Programming Procedure Introduction When no buttons are pressed for 5 s the display starts flashing You can exit at every step by leaving...

Страница 123: ...you want to adjust the value Adjust the value using the C and D keys Press s to display the value Do you want to select another parameter within the same group Stop Press s for 5 s to access only dir...

Страница 124: ...The Digital Controller ESIE11 02 2 38 Part 2 Functional Description 3 1 2 4 5 2 7 Menu Overview Overview l p function is not used...

Страница 125: ...ility The RS485 communication settings for Modbus protocol are baudrate 9600 stop bit 2 parity none Controller settings Following parameters have to be programmed to activate Modbus communication H23...

Страница 126: ...P N A W U E B F 0 1 5 C A W U E EUWYN P B5 24KB EWWP014 065KB EWLP012 065KB H L G0 G 1cm H L 120 1 4 W 120 Ohm 2 1 3 EKRUMCA EKRUMCA EKRUMCA EKAC10C 2x 0 35 mm2 AWG 22 2x 1 5 mm2 AWG 16 RS485 24 Vac G...

Страница 127: ...ark Modbus communication and remote controller cannot be selected at the same time When Modbus communication is enabled parameter code H23 1 the remote controller will indicate OFFLINE To enable the u...

Страница 128: ...The Digital Controller ESIE11 02 2 42 Part 2 Functional Description 3 1 2 4 5...

Страница 129: ...se the information gained from the input signals to control the output signals If the unit is not performing properly first check the input devices then the PCB s and finally the output devices What i...

Страница 130: ...ESIE11 02 3 2 Part 3 Troubleshooting 3 1 3 5...

Страница 131: ...first step in a troubleshooting procedure is to check the inputs and outputs This chapter contains an overview of the inputs and outputs Overview This chapter contains the following topics Topic See...

Страница 132: ...Description Analog input Sensor R3T X1 B1 GND e1 Inlet water temperature sensor R4T X1 B2 GND e2 Outlet water temperature sensor Digital input Trans ducer K4S S1HP QID K5S S2HP Q2D X1 ID3 GND hp1 Over...

Страница 133: ...h off pump Request to switch on pump DI10 Reverse valve request X C1 2 NO4 Request to switch the pump off Request to switch the pump off Description Wiring diagram symbol Input to digital con troller...

Страница 134: ...3 Troubleshooting 3 1 3 4 5 Analog inputs The table below describes the analog inputs EUWA EUWY 1 circ 2 circ 1 circ 2 circ AI1 R6T Ambient sensor X X X X AI2 R7T Coil temperature sensor circuit 1 X...

Страница 135: ...uction The malfunction indication on the digital controller display helps you to find the cause of the problem This chapter describes the malfunction indications and the safeties Overview This chapter...

Страница 136: ...n this case contact a licensed electrician Alarm Automatic 3 11 el1 indicates that there is a power supply error example noise In this case contact a licensed electrician Alarm Automatic el2 indicates...

Страница 137: ...nning hours of the compressor 1 direct parameter c10 has exceeded the setting of the timer threshold for maintenance warning user parameter c14 Warning Manual hc2 indicates that the compressor 2 requi...

Страница 138: ...essor 2 requires maintenance the total running hours of the compressor 2 direct parameter c11 has exceeded the setting of the timer threshold for maintenance warning user parameter c14 To reset the ma...

Страница 139: ...L ZH 0 5 bar Manual software reset S4LP S5LP Switch ON OFF Outlet water temp too low freeze up protection a1 Outlet water temp temp 4 0 C temp 11 5 C temp 6 5 C Standard ZL option ZH option Manual sof...

Страница 140: ...ority Service information for alarm indications If the error is solved H1P and H2P keep their latest status They can only be reset by switching OFF ON the power from the I O PCB If alarm codes fl and...

Страница 141: ...Overview This chapter contains the following topics Topic See page 3 2 Checking the Temperature Sensors 3 14 3 3 I O PCB sensors R3T and R4T for EUWA 5 24KBZW1 and EUWY 5 24KBZW1 3 15 3 4 I O PCB sen...

Страница 142: ...The following sensors of the EUWA 5 24KBZW1 and EUWY 5 24KBZW1 are connected to the I O PCB R3T R4T and R6T R7T R8T How to check To check the temperature sensors proceed as follows Step Action 1 Disc...

Страница 143: ...27 78 1 81 1 76 1 71 29 109 30 105 70 102 20 25 10 10 10 00 9 90 79 1 76 1 71 1 68 28 103 80 100 40 97 16 26 9 73 9 63 9 52 80 1 71 1 66 1 62 27 98 63 95 47 92 41 27 9 38 9 28 9 18 81 1 66 1 62 1 57...

Страница 144: ...21 37 57 5 95 5 84 10 111 99 108 96 24 20 90 20 45 58 5 74 5 43 9 106 03 103 18 25 20 00 19 56 59 5 14 5 05 8 100 41 97 73 26 19 14 18 73 60 4 96 4 87 7 95 14 92 61 27 18 32 17 93 61 4 97 4 70 6 90 1...

Страница 145: ...PCB The block diagram below shows the digital input route from the transducer e g thermostat pressostat reverse phase etc to the PCB input Output route from PCB The output is generated by the PCB If...

Страница 146: ...voltage and their fuse codes Circuit Wiring code Type voltage Fuse code Main supply L1 L2 L3 N 3 phases 400 V AC F1 F2 F3 Control circuit I O PCB L1 N L3 N 1 phase 230 V AC 1 phase 230 V AC F4 F1U Con...

Страница 147: ...5 A 5 A 5 A 5 A 5 A 5 A 5 A F1U 5 A 5 A 5 A 5 A 5 A 5 A 5 A F3U 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT K4S 9 A 13 A 16 A 24 A 13 A 16 A 24 A K5S ___ ___ ___ ___ 13 A 16 A 24 A K6S st...

Страница 148: ...ly be reset by switching the I O PCB OFF ON Error list microchiller compact controller The table below contains an error list for the microchiller compact controller Microchiller compact controller I...

Страница 149: ...X9A X9A Check Q1D Check Q2D Check shortcut hp1 OFF OFF Wireharness between I O PCB and microchiller compact X71A X1 Checkconnectionson X71A I O PCB Checkconnectionson X1 microchiller compact hp1 ON ON...

Страница 150: ...fuse of circuit 1 blown F8 Check fuse Thermal protector fan circuit 1 Q21F Q22F X14A X15A Check Q21F Check Q22F Wiring connector X23A X24A Check wiring connector X23A Check wiring connector X24A PCB f...

Страница 151: ...it repair are described Not all repair procedures are described Some procedures are considered common practice Overview This chapter contains the following topics Topic See page 4 2 Items to Be Checke...

Страница 152: ...correct it if necessary In case of remote control check the field wiring One of the timers is still active Check the timers overview in this manual and wait until all timers have elapsed See Compresso...

Страница 153: ...ld wiring Defective control devices pump relay Flow switch Pump operation Field wiring Control devices Discharge ther mal protector Refrigerant shortage Operation out of range Refrigerant leak Operati...

Страница 154: ...s to comply with all relevant European and national regulations Step Action 1 Recover the refrigerant from the unit It is strictly forbidden to release refrigerant into the atmosphere during service o...

Страница 155: ...t not modified resetting the timers switching the unit on off in cooling or heating Lock the keyboard When user parameter h09 is set to 1 the above described advanced features can be carried out using...

Страница 156: ...emove the connections of the old controller 2 Remove the old controller 3 Install the new controller in the same way as the old controller 4 Reconnect the controller 5 Reprogram the controller Step Ac...

Страница 157: ...1 P9 should be equal to 9 To exit the factory menu To exit the factory menu when you have changed all parameters proceed as follows Parameter code Description Default value S P Unit of measurement EUW...

Страница 158: ...emove the connections of the old controller 2 Remove the old controller 3 Install the new controller in the same way as the old controller 4 Reconnect the controller 5 Reprogram the controller Step Ac...

Страница 159: ...exit the factory menu when you have changed all parameters proceed as follows Parameter code Description Default value S P Unit of measurement EUWY 5 8 10 12K standard EUWY 5 8 10 12K OP ZL EUWY 5 8...

Страница 160: ...0 0 0 0 0 R W 4 4 ANA 15 Probe B3 calibration 1 9 F F 0 C F 0 0 0 0 0 0 0 0 0 0 0 0 R W 5 5 ANA 16 1 9 F F 0 C F 21 Digital filter 1 9 U F 4 4 4 4 4 4 4 4 4 4 4 4 4 R W 20 227 INT 22 Input limitation...

Страница 161: ...INT c05 Stop delay between the two compressors 1 9 U F 0 sec 0 0 0 0 0 0 R W 29 236 INT c06 Time delay at startup 1 9 U F 0 sec 0 0 0 0 0 0 0 0 0 0 0 0 R W 30 237 INT c07 ON delay pump compr 1 9 U U 2...

Страница 162: ...H10 Serial address 1 9 U U 1 1 1 1 1 1 1 1 1 1 1 1 1 R W 58 265 INT H11 Output modes 1 9 F F 0 0 0 0 9 9 9 0 0 0 9 9 9 R W 59 266 INT H12 Capacity control and reversing valve logic 1 9 F F 1 0 0 0 0 0...

Страница 163: ...30 30 30 30 30 R W 43 43 ANA r04 Heating hysteresis 1 9 D D 3 C 3 3 3 3 3 3 R W 44 44 ANA r05 Compressor rotation 1 9 F F 0 1 1 1 1 1 1 R W 78 285 INT r06 Type of compressor control 1 9 F F 0 C 0 0 0...

Страница 164: ...ZH R W Supervis variable Modbus Type r31 Heating compensation constant 1 9 U F 0 0 0 0 0 0 0 0 0 0 0 0 0 R W 60 60 ANA r32 1 9 D F 120 r33 1 9 F F 30 r34 Enable free cooling free heating 1 9 F F 0 0...

Страница 165: ...old PCB 4 Place the new PCB in the same way as the old PCB 5 Reconnect the PCB 6 Set the dipswitches on the PCB on the right position depending on the unit type 1 2 3 S1A 4 1 2 S2A S1A Dipswitch 1 S2...

Страница 166: ...protection operation The thermal protection operates as follows Ambient temperature 43 C If the unit is operating at an ambient temperature of more than 43 C and a restart of the compressor s is reque...

Страница 167: ...e well known practices in service engineering This part contains a systematic approach on test run checks and test values which guarantees a high quality installation and operation of the units What i...

Страница 168: ...ESIE11 02 4 2 Part 4 Commissioning and Test Run 3 1 4 5...

Страница 169: ...4 5 1 4 External Static Pressure EUWA 5 24KBZW1 4 8 1 5 External Static Pressure EUWY 5 24KBZW1 4 10 1 6 Static Pressure of the Pump for EUWA 5 24KBZW1 and EUWY 5 24KBZW1 4 12 1 7 Water Pressure Drop...

Страница 170: ...n no go to step 8 6 There is a drain possibility for condensed water 7 A heater tape is placed inside the drain system This is necessary to prevent ice accumu lation and possible blockage during winte...

Страница 171: ...itch and pump are properly working 8 Air purge points are installed on the high parts of the water piping 9 Drain taps are installed at the low points of the water piping 10 Other parts of the water c...

Страница 172: ...sor 240 s kg m Specific mass of the fluid water 1000 kg m d K Thermostat step difference dinlet water control 3 K Cw J kgK Specific heat capacity of the fluid Cw water 4186 J kgK 0 5 x Q x t V m 2 x x...

Страница 173: ...7 3 4 5 1 Ammonium ion mg NH4 l 1 0 0 1 0 3 0 1 Corrosion Remaining chloride mg Cl l 0 3 0 3 0 25 0 3 Corrosion Free carbide mg CO2 l 4 0 4 0 0 4 4 0 Corrosion Stability index Corrosion scale Evaporat...

Страница 174: ...un 3 1 4 5 1 4 External Static Pressure EUWA 5 24KBZW1 External static pressure The illustration below shows the external static pressure of the unit depending on the water flow 0 50 100 150 200 250 3...

Страница 175: ...and maximum allowed water flowrange See Technical Specifications EUWA 5 8KBZW1 on page 1 5 Technical Specifications EUWA 10 12KBZW1 on page 1 8 Technical Specifications EUWA 16 20KBZW1 on page 1 11 T...

Страница 176: ...1 4 5 1 5 External Static Pressure EUWY 5 24KBZW1 External static pressure The illustration below shows the external static pressure of the unit depending on the water flow 0 50 100 150 200 250 300 35...

Страница 177: ...and maximum allowed water flowrange See Technical Specifications EUWY 5 8KBZW1 on page 1 17 Technical Specifications EUWY 10 12KBZW1 on page 1 20 Technical Specifications EUWY 16 20KBZW1 on page 1 23...

Страница 178: ...3 1 4 5 1 6 Static Pressure of the Pump for EUWA 5 24KBZW1 and EUWY 5 24KBZW1 Static pressure The illustration below shows the static pressure of the pump depending on the water flow and the pump typ...

Страница 179: ...Test Run Checks Part 4 Commissioning and Test Run 4 13 3 4 5 1 Symbols The table below describes the symbols Symbol Description SP Static pressure of pump WF Waterflow rate 1 CM3 3 2 CM5 3 3 CM10 2 4...

Страница 180: ...and Test Run 3 1 4 5 1 7 Water Pressure Drop through Evaporator EUWA 5 12KBZW1 Water pressure drop The illustration below shows the water pressure drop through evaporator for EUWA 5 12KBZW1 1 00 10 0...

Страница 181: ...use damage to or malfunction of the unit See also minimum and maximum allowed water flowrange See Technical Specifications EUWA 5 8KBZW1 on page 1 5 and Technical Specifications EUWA 10 12KBZW1 on pag...

Страница 182: ...oning and Test Run 3 1 4 5 1 8 Water Pressure Drop through Evaporator EUWA 16 24KBZW1 Water pressure drop The illustration below shows the water pressure drop through evaporator for EUWA 16 24KBZW1 1...

Страница 183: ...s can cause damage to or malfunction of the unit See also minimum and maximum allowed water flowrange See Technical Specifications EUWA 16 20KBZW1 on page 1 11 and Technical Specifications EUWA 24KBZW...

Страница 184: ...g and Test Run 3 1 4 5 1 9 Water Pressure Drop through Evaporator EUWY 5 12KBZW1 Water pressure drop The illustration below shows the water pressure drop through evaporator for EUWY 5 12KBZW1 1 00 10...

Страница 185: ...n cause damage to or malfunction of the unit See also minimum and maximum allowed water flowrange See Technical Specifications EUWY 5 8KBZW1 on page 1 17 and Technical Specifications EUWY 10 12KBZW1 o...

Страница 186: ...oning and Test Run 3 1 4 5 1 10 Water Pressure Drop through Evaporator EUWY 16 24KBZW1 Water pressure drop The illustration below shows the water pressure drop through evaporator for EUWY 16 24KBZW1 1...

Страница 187: ...curves can cause damage to or malfunction of the unit See also minimum and maximum allowed water flowrange See Technical Specifications EUWY 16 20KBZW1 on page 1 23 and Technical Specifications EUWY 2...

Страница 188: ...solator are installed 2 The main power supply voltage deviates less than 10 from the nominal value 3 The flow switch and pump contact are properly wired 4 The optional wiring for pump control is insta...

Страница 189: ...the 4 way valve in cooling mode 5 1 6 4 2 3 a b e d f c Symbol Description Symbol Description 1 Discharge tube from the compressor a Pilot body 2 Suction tube to the compressor b Coil 3 Tube to the pl...

Страница 190: ...Left pilot back capil lary tube Right pilot back capil lary tube Hot Cool Hot as in column 1 Cool as in column 2 Temperature of valve body Temperature of valve body Check Cause Procedure Check the ele...

Страница 191: ...piston cup head leaks 1 Stop the unit 2 After pressure equaliza tion restart with energized solenoid 3 If the valve shifts retry with the compressor on If there is no reversal replace the valve Hot C...

Страница 192: ...arge 2 Raise the head pressure 3 If there is still no shift replace the valve There is body damage Replace the valve Hot Warm Warm Hot Hot Hot Both parts of the pilot are still open 1 Raise the head p...

Страница 193: ...If there is still no shift replace the valve Hot Cool Hot as in column 1 Cool as in column 1 Hot Temper ature of valve body There is dirt in one bleed hole 1 Raise the head pressure 2 Operate the sole...

Страница 194: ...eading 1 2 3 4 5 6 Cause Procedure Hot Cool Hot as in column 1 Cool as in column 1 Temper ature of valve body Warmer than valve body The piston needle is leaking at the end of the slide 1 Operate the...

Страница 195: ...e tables in this chapter contain an overview of the measurements that you can carry out Use it as a guideline during commissioning For the location of the measurement points refer to the piping and wi...

Страница 196: ...andard 5 20 C For ZH 5 20 C For ZL 10 20 C Heating 35 50 C only for EUWY 5 24KBZW1 Outdoor temperature 15 43 C for standard unit 10 43 C for glycol unit Temperature difference at the air side 10 15 C...

Страница 197: ...0KBZW1 EUWAN12KBZW1 20 5 A 26 9 A 3 x 40 gL gG EUWAP12KBZW1 21 9 A 28 3 A 3 x 40 gL gG EUWAB12KBZW1 EUWAN16KBZW1 27 2 A 31 8 A 3 x 40 gL gG EUWAP16KBZW1 29 2 A 33 8 A 3 x 50 gL gG EUWAB16KBZW1 EUWAN20...

Страница 198: ...Test Run and Operation Data ESIE11 02 4 32 Part 4 Commissioning and Test Run 3 1 4 5...

Страница 199: ...ce should be set up for operation at maximum capacity or to avoid damage The following chapters explain how to or when to maintain the units It is also applicable on other types of Daikin chillers Wha...

Страница 200: ...ESIE11 02 5 2 Part 5 Maintenance 3 1 5...

Страница 201: ...refrigerant or lead to system contamination Avoid high gas concentrations While the heavy concentration of the refrigerant gas will raise from the floor level good ventilation is a must Avoid all con...

Страница 202: ...eaning and also whether water treatment is needed in the chilled water circuit Check the air plugs and drain plugs to prevent or detect water leakage Check pressure drop and water flow Record temperat...

Страница 203: ...spect the bulb power head capillary connection no chaffing Inspect the equaliser line visually Inspect the feeler bulb suction pipe connection insulation Flow switch and pump interlock Follow the inst...

Страница 204: ...trol Devices Preventive maintenance A program of scheduled maintenance should be set up and followed The items mentioned are to be used as a guide and must be used in combination with sound electrical...

Страница 205: ...l Check the operation of the safety devices No operation can cause damage of the unit Inspection checks and actions Remarks Check the refrigerant circuit If the unit leaks contact your dealer Inspecti...

Страница 206: ...1 5 5 Noise checks The table below contains the noise checks Inspection checks and actions Remarks Check for any abnormal noise Locate the noise producing section and search the cause If the cause of...

Страница 207: ...ctrical Error Overview EUWA 5 24KBZW1 and EUWY 5 24KBZW1 k 3 20 Electrical Specifications EUWA 10 12KBZW1 k 1 33 EUWA 16 20KBZW1 k 1 35 EUWA 24KBZW1 k 1 37 EUWA 5 8KBZW1 k 1 31 EUWY 10 12KBZW1 k 1 41...

Страница 208: ...rational Flow Chart k 2 7 Operational Range EUWA 5 24KBZW1 k 2 4 EUWY 5 24KBZW1 k 2 5 Outlook Drawing EUWAB10 12KBZW1 EUWYB10 12KBZW1 k 1 52 EUWAB16KBZW1 EUWAB16KBZW1 k 1 55 EUWAB20 24KBZW1 EUWYB20 24...

Страница 209: ...k 1 11 EUWA 24KBZW1 k 1 14 EUWA 5 8KBZW1 k 1 5 EUWY 10 12KBZW1 k 1 20 EUWY 16 20KBZW1 k 1 23 EUWY 24KBZW1 k 1 26 EUWY 5 8KBZW1 k 1 17 Test Run and Operation Data for EUWA 5 24KBZW1 and EUWY 5 24KBZW1...

Страница 210: ...ESIE11 02 4 Index 3 1 4 5...

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