![Daikin EUWAC5FZW [253/264] Maintenance of the main parts](/img/pdf.png)
Daikin EUWAC5FZW [253/264] Maintenance of the main parts
![Daikin EUWAC5FZW [253/264] Maintenance of the main parts](/views2/1657184/page253/bgfd.png)
Maintenance ESIE-0302
5–4 Part 5 – Maintenance
3
1
5
5
1.2 Maintenance of the Main Parts
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 and refrigeration workmanship
to ensure trouble free operation and performance.
Unit Casing Follow the below instructions to check the unit casing.
Compressor Follow the instructions below to check the compressor:
■ Check crankcase heater operation. Switch of the compressor and carefully touch the crankcase
heater area by hand.
No operation can cause compressor damage when the ambient temperature reaches a low
temperature.
Evaporator and
condenser
Follow the instructions below to check the evaporator and condenser:
■ Inspect the evaporator tubes or condenser plates after the first operating season. This condition
indicates the required frequency of cleaning 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 temperature difference between in / out and water out/ refrigerant temperature.
■ Inspect evaporator insulation. If damaged, repair to avoid water between insulation and evaporator
shell.
■ Inspect water and refrigerant connections.
■ If the evaporator heater-tape is installed, check operation by direct power connection and
hand-touch.
■ brush cleaning. Abnormal high condensing-pressures are an indication for periodic cleaning.
Unit switchbox Follow the instructions below to check the unit switchbox:
■ Check all power connections for tightness.
■ Check compressor motor terminals.
■ Inspect wiring for any signs of overheating (discolouring).
■ Remove all dust and debris from the switchbox. Replaced coils and components should not be left
in the unit control panel.
■ Check all field-wired terminals.
Check if... If not, then...
The paint of the unit casing is
intact.
Touch-up with paint.
All plate work is screwed down in
position.
Screw the plate work down in position.
Содержание
- Service manual 1
- General outline 2
- Introduction 2
- Part 1 system outline 2
- Table of contents 2
- Functional description 3
- Part 2 functional description 3
- Piping layout 3
- Wiring layout 3
- Checking the inputs and outputs 4
- Inputs and outputs overview 4
- Malfunction indications and safeties overview 4
- Part 3 troubleshooting 4
- The digital controller 4
- Part 4 commissioning and test run 5
- Pre test run checks 5
- Troubleshooting 5
- Maintenance 6
- Part 5 maintenance 6
- Test run and operation data 6
- About this manual 8
- Introduction 8
- Part 0 8
- Part 1 system outline 10
- General outline 12
- Part 1 12
- What is in this chapter 12
- Capacity steps 14
- Esie 0302 general outline 14
- Nominal cooling capacity 14
- Nominal cooling input 14
- Part 1 system outline 1 5 14
- Technical specifications euwac5 10fzw1 14
- Technical specifications the table below contains the technical specification 14
- 6 part 1 system outline 15
- Al values are valid for an external static pressure of with factory pulley setting 15
- For reduced setting multiply this water volume by 3 new setting 15
- General outline esie 0302 15
- Hp 50 pa _ 15
- Hp 60 pa 0 turns open 15
- Hp 72 pa 0 turns open 15
- Minimum allowable setting 0 k 15
- Setting euwac5 10fzw1 15
- The minimum water volume for standard thermostat difference setting 3 k 15
- The sound power level is an absolute value that does not depend on the surroundings or the distance iso 9614 it cannot be measured in the field 15
- The table below contains the conditions for the technical specification values 15
- The table below contains the minimum water volume settings 15
- 8 part 1 system outline 17
- General outline esie 0302 17
- Technical specifications euwa 5 8kzw1 17
- Technical specifications the table below contains the technical specifications 17
- Esie 0302 general outline 18
- For reduced setting multiply this water volume by 3 new setting 18
- Minimum allowable setting 0 k 18
- Part 1 system outline 1 9 18
- Setting euwa5 12kzw1 18
- The minimum water volume for standard thermostat difference setting 3 k 18
- The table below contains the minimum water volume settings 18
- Esie 0302 general outline 20
- Part 1 system outline 1 11 20
- Technical specifications euwa 10 12kzw1 20
- Technical specifications the table below contains the technical specifications 20
- 12 part 1 system outline 21
- For reduced setting multiply this water volume by 3 new setting 21
- General outline esie 0302 21
- Minimum allowable setting 0 k 21
- Setting euwa5 12kzw1 21
- The minimum water volume for standard thermostat difference setting 3 k 21
- The table below contains the minimum water volume settings 21
- 14 part 1 system outline 23
- General outline esie 0302 23
- Technical specifications euwa 16 20kzw1 23
- Technical specifications the table below contains the technical specifications 23
- Esie 0302 general outline 24
- For reduced setting multiply this water volume by 3 new setting 24
- Minimum allowable setting 0 k 24
- Part 1 system outline 1 15 24
- Setting euwa16 20kzw1 24
- The minimum water volume for standard thermostat difference setting 3 k 24
- The sound power level is an absolute value that does not depend on the surroundings or the distance it cannot be measured in the field iso 9614 24
- The table below contains the minimum water volume settings 24
- Esie 0302 general outline 26
- Part 1 system outline 1 17 26
- Technical specifications euwa 24kzw1 26
- Technical specifications the table below contains the technical specifications 26
- 18 part 1 system outline 27
- For reduced setting multiply this water volume by 3 new setting 27
- General outline esie 0302 27
- Minimum allowable setting 0 k 27
- Setting euwa24kzw1 27
- The minimum water volume for standard thermostat differ ence setting 3 k 27
- The sound power level is an absolute value that does not depend on the surroundings or the distance it cannot be measured in the field iso 9614 27
- The table below contains the minimum water volume settings 27
- 20 part 1 system outline 29
- General outline esie 0302 29
- Technical specifications euwy5 8kzw1 29
- Technical specifications the table below contains the technical specifications 29
- Esie 0302 general outline 30
- For reduced setting multiply this water volume by 3 new setting 30
- Minimum allowable setting 0 k 30
- Part 1 system outline 1 21 30
- Setting euwy5 12kzw1 30
- The minimum water volume for standard thermostat difference setting 3 k 30
- The table below contains the minimum water volume settings 30
- Esie 0302 general outline 32
- Part 1 system outline 1 23 32
- Technical specifications euwy 10 12kzw1 32
- Technical specifications the table below contains the technical specifications 32
- 24 part 1 system outline 33
- For reduced setting multiply this water volume by 3 new setting 33
- General outline esie 0302 33
- Minimum allowable setting 0 k 33
- Setting euwy5 12kzw1 33
- The minimum water volume for standard thermostat difference setting 3 k 33
- The table below contains the minimum water volume settings 33
- 26 part 1 system outline 35
- General outline esie 0302 35
- Technical specifications euwy 16 20kzw1 35
- Technical specifications the table below contains the technical specifications 35
- Esie 0302 general outline 36
- For reduced setting multiply this water volume by 3 new setting 36
- Minimum allowable setting 0 k 36
- Part 1 system outline 1 27 36
- Setting euwy 16 20kzw1 36
- The minimum water volume for standard thermostat difference setting 3 k 36
- The table below contains the minimum water volume settings 36
- Esie 0302 general outline 38
- Part 1 system outline 1 29 38
- Technical specifications euwy 24kzw1 38
- Technical specifications the table below contains the technical specifications 38
- 30 part 1 system outline 39
- For reduced setting multiply this water volume by 3 new setting 39
- General outline esie 0302 39
- Minimum allowable setting 0 k 39
- Setting euwy24kzw1 39
- The minimum water volume for standard thermostat differ ence setting 3 k 39
- The table below contains the minimum water volume settings 39
- Correction factors for glycol 41
- 34 part 1 system outline 43
- Al values are valid for an external static pressure of with factory pulley setting 43
- Electrical specifications euwac5 10fzw1 43
- Electrical specifications the table below contains the electrical specifications 43
- General outline esie 0302 43
- Hp 50 pa _ 43
- Hp 60 pa 0 turns open 43
- Hp 72 pa 0 turns open 43
- The table below contains the conditions for the electrical specification values 43
- 36 part 1 system outline 45
- Electrical specifications euwa 5 8kzw1 45
- Electrical specifications the table below contains the electrical specifications 45
- General outline esie 0302 45
- 38 part 1 system outline 47
- Electrical specifications euwa 10 12kzw1 47
- Electrical specifications the table below contains the electrical specifications 47
- General outline esie 0302 47
- 40 part 1 system outline 49
- Electrical specifications euwa 16 20kzw1 49
- Electrical specifications the table below contains the electrical specifications 49
- General outline esie 0302 49
- 42 part 1 system outline 51
- Electrical specifications euwa 24kzw1 51
- Electrical specifications the table below contains the electrical specifications 51
- General outline esie 0302 51
- 44 part 1 system outline 53
- Electrical specifications euwy 5 8kzw1 53
- Electrical specifications the table below contains the electrical specifications 53
- General outline esie 0302 53
- 46 part 1 system outline 55
- Electrical specifications euwy 10 12kzw1 55
- Electrical specifications the table below contains the electrical specifications 55
- General outline esie 0302 55
- 48 part 1 system outline 57
- Electrical specifications euwy 16 20kzw1 57
- Electrical specifications the table below contains the electrical specifications 57
- General outline esie 0302 57
- 50 part 1 system outline 59
- Electrical specifications euwy 24kzw1 59
- Electrical specifications the table below contains the electrical specifications 59
- General outline esie 0302 59
- Outlook drawing euwac5fzw1 61
- Outlook drawing euwac8 10fzw1 62
- Outlook drawing euwan5 8kzw1 63
- Outlook drawing euwap5 8kzw1 64
- Outlook drawing euwab5 8kzw1 65
- Outlook drawing euwan10 12kzw1 66
- Outlook drawing euwap10 12kzw1 67
- Outlook drawing euwab10 12kzw1 68
- Outlook drawing euwan16kzw1 69
- Outlook drawing euwap16kzw1 70
- Outlook drawing euwab16kzw1 71
- Outlook drawing euwan20 24kzw1 72
- Outlook drawing euwap20 24kzw1 73
- Outlook drawing euwab20 24kzw1 74
- Outlook drawing euwyn5 8kzw1 75
- Outlook drawing euwyp5 8kzw1 76
- Outlook drawing euwyb5 8kzw1 77
- Outlook drawing euwyn10 12kzw1 78
- Outlook drawing euwyp10 12kzw1 79
- Outlook drawing euwyb10 12kzw1 80
- Outlook drawing euwyn16kzw1 81
- Outlook drawing euwyp16kzw1 82
- Outlook drawing euwyb16kzw1 83
- Outlook drawing euwyn20 24kzw1 84
- Outlook drawing euwyp20 24kzw1 85
- Outlook drawing euwyb20 24kzw1 86
- Part 1 88
- Piping layout 88
- What is in this chapter 88
- Installation outline 89
- Functional diagram refrigeration circuit euwac5 10fzw1 90
- B models 92
- Cooling 92
- Esie 0302 piping layout 92
- Euwa 5 8 10 12 1x euwa 12 20 24 2x refr side 92
- Functional diagram refrigeration circuit euwa 5 24kzw1 92
- Functional diagram the illustration below shows the functional diagram of the refrigeration circuit of euwa 5 24kzw1 it is also applicable for glycol applications 92
- Overview 92
- P models 92
- Part 1 system outline 1 83 92
- Refrigerant side water side b p models euwa16 20 24 water side b p models euwa 5 8 10 12 92
- Water inlet 92
- Water outlet 92
- Water side 92
- Water side n models euwa 5 8 10 12 92
- Water side n models euwa16 20 24 92
- 86 part 1 system outline 95
- B models 95
- Cooling 95
- Euw y16 20 24 euwy5 8 10 12 95
- Evaporator condensor 95
- Functional diagram refrigeration circuit euwy 5 24kzw1 95
- Functional diagram the illustration below shows the functional diagram of the refrigeration circuit of euwy 5 24kzw1 it is also applicable for glycol applications 95
- Heating 95
- P models 95
- Piping diagram 95
- Piping layout esie 0302 95
- Water side b p models euwy16 20 24 water side b p models euwy5 8 10 12 95
- Water side n models euwy16 20 24 95
- Water side n models euwy5 8 10 12 95
- X piping diagram 95
- Part 1 98
- What is in this chapter 98
- Wiring layout 98
- 90 part 1 system outline 99
- Main functions of the euwac5 10fzw1 99
- Main functions the illustration below shows the main circuit of euwac5 10fzw1 99
- Wiring layout esie 0302 99
- Main functions of the euwa 5 24kzw1 and euwy 5 24kzw1 101
- Esie 0302 wiring layout 102
- Part 1 system outline 1 93 102
- Switch box layout euwac5 10fzw1 102
- Switch box layout the illustration below shows the switch box layout of euwac5 10fzw1 102
- Switch box layout euwa 5 24kzw1 and euwy 5 24kzw1 104
- Esie 0302 wiring layout 106
- Part 1 system outline 1 97 106
- Pcb layout of the euwa 5 24kzw1 and euwy 5 24kzw1 106
- Pcb layout the illustration below shows the i o pcb layout of chiller types euwa 5 24kzw1 and euwy 5 24kzw1 106
- Wiring diagram euwac5 10fzw1 110
- Wiring diagram euwa 5 24kzw1 and euwy 5 24kzw1 111
- Part 2 functional description 112
- Functional description 114
- Part 2 114
- What is in this chapter 114
- Operational range euwac5 10fzw1 115
- Operational range euwa 5 24kzw1 116
- 6 part 2 functional description 117
- Functional description esie 0302 117
- Operational range euwy 5 24kzw1 117
- Operational range in cooling mode the illustration below shows the operational range in cooling mode of the euwy 5 24kzw1 117
- Operational range in heating mode the illustration below shows the operational range in heating mode of the euwy 5 24kzw1 117
- Operational flow chart 119
- Compressor working status 120
- Compressor timers 121
- Thermostat control euwac5 10fzw1 122
- 12 part 2 functional description 123
- Controller the table below describes the step difference 123
- Description lower limit upper limit step default 123
- Functional description esie 0302 123
- Functional diagram 16 24hp the illustration below shows the thermostat control of 16 24hp 123
- Functional diagram 5 12hp the illustration below shows the thermostat control of 5 12hp 123
- R2 and or r4 step difference c 0 19 0 3 123
- Thermostat control euwa 5 24kzw1 and euwy 5 24kzw1 123
- Bar 22 bar 124
- Head pressure control euwac5 10fzw1 124
- Head pressure control euwa 5 24kzw1 and euwy 5 24kzw1 126
- Fan working euwac5 10fzw1 128
- Fan working euwa 5 24kzw1 and euwy 5 24kzw1 129
- Crankcase heater 130
- Evaporator heater tape management euwa 5 24kzw1 and euwy 5 24kzw1 131
- Pump steering 132
- Freeze up control euwac5 10fzw1 133
- Freeze up control euwa 5 24kzw1 and euwy 5 24kzw1 134
- Defrost management for euwy 5 24kzw1 135
- Defrost cycles and compressor stop function 140
- Esie 0302 functional description 140
- Illustration compressor stop function 140
- Maximum cycle 10 min timdefrmax 140
- Maximum cycle 12 min timcomprstopx4 timdefrmax 140
- Part 2 functional description 2 29 140
- The illustrations below show the defrost cycle without and with compressor stop during the defrost cycle 140
- The table below describes the minimum and maximum defrost cycles without and with compressor stop 140
- With compressor stop minimum cycle 130 s timcomprstopx4 timdefrmin 140
- Without compressor stop minimum cycle 10 s timdefrmin 140
- Part 2 142
- The digital controller 142
- What is in this chapter 142
- Psç² 143
- The digital controller 143
- Start stop 145
- What happens in case of an alarm or a warning 147
- Settings direct and user parameters 148
- Esie 0302 the digital controller 150
- Introduction 150
- Part 2 functional description 2 39 150
- Reading or adjusting parameter settings the programming procedure 150
- Reading or adjusting to read or adjust parameter settings proceed as follows 150
- When no buttons are pressed for 5 s the display starts flashing 150
- You can exit at every step by leaving the buttons untouched for 1 min the modifications are not saved 150
- Part 3 troubleshooting 152
- Inputs and outputs overview 154
- Part 3 154
- What is in this chapter 154
- Inputs and outputs overview euwac5 10fzw1 155
- Inputs and outputs overview euwa 5 24kzw1 and euwy 5 24kzw1 156
- Inputs outputs overview of the i o pcb euwa 5 24kzw1 and euwy 5 24kzw1 157
- Malfunction indications and safeties overview 160
- Part 3 160
- What is in this chapter 160
- Malfunction indications overview euwac5 10fzw1 161
- Malfunction indications overview euwa 5 24kzw1 and euwy 5 24kzw1 163
- Safeties overview euwac5 10fzw1 165
- Safeties overview euwa 5 24kzw1 and euwy 5 24kzw1 166
- Checking the inputs and outputs 168
- Part 3 168
- What is in this chapter 168
- Checking the temperature sensors 169
- Controller sensors r3t and r4t for euwac 5 10fzw1 170
- Esie 0302 checking the inputs and outputs 170
- Part 3 troubleshooting 3 19 170
- Temp resistance the table below contains the temperature resistance values of the controller sensors 170
- 20 part 3 troubleshooting 171
- Checking the inputs and outputs esie 0302 171
- I o pcb sensors r3t and r4t for euwa 5 24kzw1 and euwy 5 24kzw1 171
- Temp resistance the table below contains the temperature resistance values of the i o pcb sensors r3t and r4t 171
- I o pcb sensors r6t r7t and r8t for euwa 5 24kzw1 and euwy 5 24kzw1 172
- Checking the digital inputs and outputs 173
- Checking the power supply and fuses euwac5 10fzw1 174
- Checking the power supply and fuses euwa 5 24kzw1 and euwy 5 24kzw1 175
- Electrical error overview euwa 5 24kzw1 and euwy 5 24kzw1 176
- Part 3 180
- Troubleshooting 180
- What is in this chapter 180
- Items to be checked 181
- General repair procedures 183
- Unlocking the keyboard 184
- Replacing the controller euwac5 10fzw1 185
- Replacing the controller euwa 5 24kzw1 190
- Replacing the controller euwy 5 24kzw1 195
- Replacing the pcb euwa 5 24kzw1 and euwy 5 24kzw1 201
- Soft starter option ekss thermal protection 202
- Part 4 commissioning and test run 204
- Part 4 206
- Pre test run checks 206
- What is in this chapter 206
- General checks 207
- Water piping checks 208
- Esie 0302 pre test run checks 210
- Part 4 commissioning and test run 4 7 210
- 8 part 4 commissioning and test run 211
- External static pressure euwac5fzw1 211
- Pre test run checks esie 0302 211
- Speed setting euwac5fzw1 has a direct driven fan choose the appropriate speed setting in the illustration below depending on the installation 211
- Values applicable for no headpressure control working only 211
- External static pressure euwa 5 12kzw1 213
- External static pressure euwa 16 24kzw1 215
- External static pressure euwy 5 12kzw1 217
- 1 euwy p b 16kzw1 standard 219
- 16 part 4 commissioning and test run 219
- 2 euwy p b 20kzw1 standard 219
- 3 euwy p b 24kzw1 standard 219
- 4 euwy p b 16kzw1 op pump high 219
- Esp external static pressure of the unit 219
- External static pressure euwy 16 24kzw1 219
- External static pressure the illustration below shows the external static pressure of the unit depending on the water flow and the op pump 219
- Non operation area 219
- Pre test run checks esie 0302 219
- Symbol description 219
- Symbols the table below describes the symbols 219
- Wf waterflow rate 219
- 18 part 4 commissioning and test run 221
- Pre test run checks esie 0302 221
- Static pressure of the pump for euwa 5 24kzw1 and euwy 5 24kzw1 221
- Static pressure the illustration below shows the static pressure of the pump depending on the water flow and the pump type 221
- 20 part 4 commissioning and test run 223
- Esp pa 223
- Motor pulley setting euwac8fzw1 223
- Motor pulley setting euwac8fzw1 has belt driven fans with an adjustable pulley on the motor choose the appropriate pulley setting in the illustration below depending on the installation 223
- Pre test run checks esie 0302 223
- 22 part 4 commissioning and test run 225
- Esp pi af of euwac10fzw 225
- Motor pulley setting euwac10fzw1 225
- Motor pulley setting euwac10fzw1 has belt driven fans with an adjustable pulley on the motor choose the appropriate pulley setting in the illustration below depending on the installation 225
- Pre test run checks esie 0302 225
- Water pressure drop through evaporator euwac5 8 10fzw1 227
- Esie 0302 pre test run checks 228
- Part 4 commissioning and test run 4 25 228
- Water pressure drop the illustration below shows the water pressure drop through evaporator for euwa 5 12kzw1 228
- Water pressure drop through evaporator euwa 5 12kzw1 228
- Esie 0302 pre test run checks 230
- Part 4 commissioning and test run 4 27 230
- Water pressure drop the illustration below shows the water pressure drop through evaporator for euwa 16 24kzw1 230
- Water pressure drop through evaporator euwa 16 24kzw1 230
- Esie 0302 pre test run checks 232
- Part 4 commissioning and test run 4 29 232
- Water pressure drop the illustration below shows the water pressure drop through evaporator for euwy 5 12kzw1 232
- Water pressure drop through evaporator euwy 5 12kzw1 232
- Esie 0302 pre test run checks 234
- Part 4 commissioning and test run 4 31 234
- Water pressure drop the illustration below shows the water pressure drop through evaporator for euwy 16 24kzw1 234
- Water pressure drop through evaporator euwy 16 24kzw1 234
- Setting of the flow switch 236
- Air fan adjustment 238
- Electrical checks 239
- Control of the function of the 4 way valve for euwy5 24kzw1 240
- Part 4 246
- Test run and operation data 246
- What is in this chapter 246
- Test run and operation data for euwac5 10fzw1 247
- Test run and operation data for euwa 5 24kzw1 and euwy 5 24kzw1 248
- Part 5 maintenance 250
- Maintenance 252
- Part 5 252
- What is in this chapter 252
- Maintenance of the main parts 253
- Maintenance of the control devices 255
- Periodical checks 256
- B 8400 ostend belgium 264
- Esie 0302 12 2003 printed in belgium by vanmelle 264
- Internet http www daikineurope com 264
- Zandvoordestraat 300 264
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