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oubleshooting

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Page 48

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3. Error Diagnosis and Troubleshooting Without Error Code

WARNING

Be sure to turn off unit before any maintenance to prevent damage or injury.

3.1 Remote maintenance

SUGGESTION:

When troubles occur, please check the following points with customers before field maintenance.

NO.

Problem

Solution

Unit will not start

Page 51-52

The power switch is on but fans will not start

Page 51-52

The temperature on the display board cannot be set

Page 51-52

Unit is on but the wind is not cold(hot)

Page 51-52

Unit runs, but shortly stops

Page 51-52

The unit start ups and stops frequently

Page 51-52

Unit runs continuously but insufficient cooling(heating)

Page 51-52

Cool can not change to heat

Page 51-52

Unit is noisy

Page 51-52

Содержание ON-OFF Series

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Страница 3: ...ms 3 Product Features 7 1 Operation Modes and Functions 4 Maintenance and Disassembly 12 1 Maintenance 2 Disassembly 5 Troubleshooting 46 1 Safety Caution 2 General Troubleshooting 3 Error Diagnosis and Troubleshooting Without Error Code 4 Quick Maintenance by Error Code 5 Troubleshooting by Error Code Appendix 62 i Temperature Sensor Resistance Value Table for T1 T2 T3 and T4 C K ii Pressure On S...

Страница 4: ......

Страница 5: ...Contents 1 In Case of Accidents or Emergency 2 2 Pre Installation 2 3 Operation and Maintenance 2 Safety Precautions ...

Страница 6: ...form electri cal work For more information contact your dealer seller or an authorized service center CAUTION While unpacking be careful of sharp edges around the unit as well as the edges of the fins on the con denser and evaporator 3 Operation and Maintenance WARNING Do not use defective or under rated circuit breakers Ensure the unit is properly grounded and that a dedicated circuit and breaker...

Страница 7: ...Contents 1 Model Reference 4 2 Electrical Wiring Diagrams 5 2 1 Indoor Unit 5 2 2 Outdoor Unit 6 Specifications ...

Страница 8: ......

Страница 9: ...n Paraphrase Y G Yellow Green Conductor ION Positive and Negative Ion Generator CAP Capacitor PLASMA Electronic Dust Collector L LIVE N NEUTRAL Heater The Electric Heating Belt of Indoor Unit T1 Indoor Room Temperature T2 Coil Temperature of Indoor Heat Exchanger Middle PAC36337 ...

Страница 10: ... 4 WAY VALVE AC FAN Alternating Current FAN DC FAN Direct Current FAN CT1 AC Current Detector COMP Compressor L PRO Low Pressure Switch H PRO High Pressure Switch T3 Coil Temperature of Condenser T4 Outdoor Ambient Temperature TH Compressor Suction Temperature OLP Overload Relay PAC36337 ...

Страница 11: ... 3 Digital Display 8 1 4 Fan Mode 9 1 5 Cooling Mode 9 1 6 Auto mode 9 1 7 Drying Mode 9 1 8 Forced Operation Function 9 1 9 Auto Restart Function 9 1 10 Refrigerant Leakage Detection 10 1 11 Self Clean Optional 10 1 12 Follow Me Optional 10 1 15 Information Inquiry 10 Product Features ...

Страница 12: ...on the indoor unit Current protection The current exceeds setting value for certain time the compressor and outdoor fan will shut off Indoor fan delayed operation When the unit starts the louver is automatically activated and the indoor fan will operate after a period of 4 seconds If the unit is in heating mode the indoor fan is regulated by the anti cold wind function Sensor redundancy and automa...

Страница 13: ...s Pressing the forced auto button If AC is off it will run in auto mode when the timer on function is active After setting the mode AC will run in auto mode if the compressor keeps not running for certain time 1 7 Drying mode The compressor is cycled running with 10 minutes on and then 5 minutes off The indoor fan will keep running at low speed In drying mode if room temperature is lower than 10 C...

Страница 14: ...ow me function is active Once active the remote control will send a signal every 3 minutes with no beeps The unit automatically sets the temperature according to the measurements from the remote control The unit will only change modes if the information from the remote control makes it necessary not from the unit s temperature setting If the unit does not receive a signal for 7 minutes or you pres...

Страница 15: ...es T1 Room temperature 14 70 14 70 1 All displayed temperatures use actual values 2 All temperatures are displayed in C regardless of remote used 3 If the actual value exceeds the range it will display the maximum value or minimum value T2 Indoor coil temperature T3 Outdoor coil temperature ...

Страница 16: ...nce 13 1 1 First Time Installation Check 13 1 2 Refrigerant Recharge 15 1 3 Re Installation 16 1 3 1 Indoor Unit 16 1 3 2 Outdoor Unit 18 2 Disassembly 20 2 1 Indoor Unit 20 2 2 Outdoor Unit 36 Maintenance and Disassembly ...

Страница 17: ...essure in the system Increasing the operating current Decreasing the cooling or heating efficiency Congesting the capillary tubing due to ice build up in the refrigerant circuit Corroding the refrigerant system To prevent air and moisture from affecting the air conditioner s performance the indoor unit as well as the pipes between the indoor and outdoor unit must be be leak tested and evacuated Le...

Страница 18: ...e evacuating for an additional 20 minutes If the pressure does not achieve 0 1 MPa 14 5 Psi after 50 minutes check for leakage If the pressure successfully reaches 0 1 MPa 14 5 Psi fully close the Handle Lo valve then cease vacuum pump operations b Wait for 5 minutes then check whether the gauge needle moves after turning off the vacuum pump If the gauge needle moves backward check wether there is...

Страница 19: ...nvert the cylinder to ensure a complete liquid charge 5 Open the valve at the bottom of the cylinder for 5 seconds to purge the air in the charge hose then fully tighten the charge hose with push pin Handle Lo to the service port of 3 way valve 6 Place the charging cylinder onto an electronic scale and record the starting weight 7 Fully open the Handle Lo manifold valve 2 and 3 way valves 8 Operat...

Страница 20: ... 3 way valve s gas service port 3 Open the Handle Lo manifold valve to purge air from the charge hose for 5 seconds and then close it quickly 4 Close the 2 way valve 5 Operate the air conditioner in cooling mode Cease operations when the gauge reaches 0 1 MPa 14 5 Psi 6 Close the 3 way valve so that the gauge rests between 0 3 MPa 43 5 Psi and 0 5 MPa 72 5 Psi 7 Disconnect the charge set and mount...

Страница 21: ...nd meter indicates 0 1 MPa 14 5 Psi If the meter does not indicate 0 1 MPa 14 5 Psi after 30 minutes continue evacuating for an additional 20 minutes If the pressure does not achieve 0 1 MPa 14 5 Psi after 50 minutes check for leakage If the pressure successfully reaches 0 1 MPa 14 5 Psi fully close the Handle Lo valve then cease vacuum pump operations b Wait for 5 minutes then check whether the g...

Страница 22: ...cuate the system for approximately one hour Confirm that the compound meter indicates 0 1 MPa 14 5Psi 4 Close the valve Low side on the charge set and turn off the vacuum pump 5 Wait for 5 minutes then check whether the gauge needle moves after turning off the vacuum pump If the gauge needle moves backward check whether there is gas leakage 6 Disconnect the charge hose from the vacuum pump 7 Mount...

Страница 23: ...the cylinder to ensure a complete liquid charge 5 Open the valve at the bottom of the cylinder for 5 seconds to purge the air in the charge hose then fully tighten the charge hose with push pin Handle Lo to the service port of 3 way valve 6 Place the charging cylinder onto an electronic scale and record the starting weight 7 Fully open the Handle Lo manifold valve 2 and 3 way valves 8 Operate the ...

Страница 24: ...Hold the front panel by the tabs on the both sides and lift it see CJ_AB_ INV_001 2 Push up the bottom of an air filter step 1 and then pull it out downwards step 2 see CJ_AB_ INV_002 CJ_AB_INV_001 CJ_AB_INV_002 Note This section is for reference only Actual unit appearance may vary Front Panel Tab Filter ...

Страница 25: ...he hook towards left to open it see CJ_AB_INV_003 4 Bend the horizontal louver lightly by both hands to loosen the hooks then remove the horizontal louver see CJ_AB_INV_004 CJ_AB_INV_003 CJ_AB_INV_004 Note This section is for reference only Actual unit appearance may vary Horizontal Louver Hook Hook ...

Страница 26: ...ry the electrical cover by a screw driver and rotate it towars left then remove it see CJ_AB_INV_005 6 Disconnect the connector for display board see CJ_AB_INV_006 CJ_AB_INV_005 CJ_AB_INV_006 Note This section is for reference only Actual unit appearance may vary ...

Страница 27: ...stration 7 Slid the front panel side to side to release each axis see CJ_AB_INV_007 8 Open the screw cap and then remove the 3 screws see CJ_AB_INV_008 CJ_AB_INV_007 CJ_AB_INV_008 Note This section is for reference only Actual unit appearance may vary ...

Страница 28: ... 10 Release the 5 hooks in the back see CJ_AB_INV_010 11 Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger see CJ_AB_INV_011 CJ_AB_INV_009 CJ_AB_INV_010 CJ_AB_INV_011 Note This section is for reference only Actual unit appearance may vary Hooks ...

Страница 29: ... the vertical blades rightward and remove it see CJ_AB_ INV_012 13 Remove 1 screw of the display board see CJ_AB_INV_013 14 Rotate the display board in the direction shown in the right picture see CJ_AB_INV_013 CJ_AB_INV_012 CJ_AB_INV_013 Note This section is for reference only Actual unit appearance may vary Hooks ...

Страница 30: ...then pull out the coil temperature sensor T2 see CJ_AB_INV_014 2 Remove one fixing screw of the electronic control box and two screws used for the ground connection see CJ_AB_INV_014 3 An upward force is maintained until the cover of electronic control box is removed see CJ_AB_INV_015 CJ_AB_INV_014 CJ_AB_INV_015 Note This section is for reference only Actual unit appearance may vary CJ_AF_011 1 Ri...

Страница 31: ...ctors see CJ_AB_INV_016 5 Disconnect the connectors of fan motor the step motor and the T2 sensor see CJ_AB_INV_017 6 Open the left side plate of electronic control box see CJ_AB_INV_018 CJ_AB_INV_016 CJ_AB_INV_017 CJ_AB_INV_018 Note This section is for reference only Actual unit appearance may vary ...

Страница 32: ...tration 7 Open the two clips on the front of the electric box see CJ_AB_INV_019 8 Open the upper cover plate of electronic control box see CJ_AB_ INV_020 CJ_AB_INV_019 CJ_AB_INV_020 Note This section is for reference only Actual unit appearance may vary ...

Страница 33: ...he 2 clips along the direction indicated in right image see CJ_AB_INV_021 10 Pull out the electrical main board along the direction indicated in right image to remove it see CJ_AB_ INV_022 CJ_AB_INV_021 CJ_AB_INV_022 Note This section is for reference only Actual unit appearance may vary ...

Страница 34: ...rts before disassembling evaporator Procedure Illustration 1 Disassemble the pipe holder located at the rear of the unit see CJ_AB_INV_023 2 Remove the 1 screws on the evaporator located at the fixed plate see CJ_AB_ INV_024 CJ_AB_INV_023 CJ_AB_INV_024 Note This section is for reference only Actual unit appearance may vary Pipe Holder Screw ...

Страница 35: ...n the evaporator see CJ_AB_INV_025 4 Remote the one screw on the evaporator located at the fixed plate see CJ_AB_ INV_026 5 Pull out the evaporator see CJ_AB_ INV_027 CJ_AB_INV_025 CJ_AB_INV_026 CJ_AB_INV_027 Note This section is for reference only Actual unit appearance may vary ...

Страница 36: ... 2 Electrical parts and 3 Evaporator before disassembling fan motor and fan Procedure Illustration 1 Remove the two screws and remove the fixing board of the fan motor see CJ_AB_ INV_028 2 Remove the bearing sleeve see CJ_AB_ INV_029 CJ_AB_INV_028 CJ_AB_INV_029 Note This section is for reference only Actual unit appearance may vary Screws ...

Страница 37: ...Page 33 Procedure Illustration 3 Remove the fixing screw see CJ_AB_ INV_030 4 Pull out the fan motor and fan assembly from the side CJ_AB_INV_030 Note This section is for reference only Actual unit appearance may vary Fixing Screw ...

Страница 38: ...ectrical parts refer to 1 Front panel 2 Electrical parts before disassembling step motor Procedure Illustration 1 Remove the two screws then remove the stepping motor see CJ_AB_INV_031 CJ_AB_INV_031 Note This section is for reference only Actual unit appearance may vary Stepping Motor ...

Страница 39: ...ocedure Illustration 1 Rotate the fixed wire clockwise indicated in right image see CJ_AB_INV_032 2 Pull up the drain hose to remove it see CJ_AB_INV_033 CJ_AB_INV_032 CJ_AB_INV_033 Note This section is for reference only Actual unit appearance may vary ...

Страница 40: ...screws of the big handle and then remove the big handle 2 screws see CJ_D30_INV_001 3 Remove the screws of the top cover and then remove the top cover 4 screws Two of the screws is located underneath the big handle see CJ_ D30_INV_002 CJ_D30_INV_001 CJ_D30_INV_002 Note This section is for reference only Actual unit appearance may vary Big Handle Top Cover ...

Страница 41: ...nel and then remove the front right panel 2 screws see CJ_D30_ INV_003 5 Remove the screws of the front panel and then remove the front panel 9 screws see CJ_D30_INV_004 CJ_D30_INV_003 CJ_D30_INV_004 Note This section is for reference only Actual unit appearance may vary Front Right Panel Front Panel ...

Страница 42: ...and then remove the water collecting cover 2 screw see CJ_ D30_INV_005 7 Remove the screws of the right panel and then remove the right panel 8 screws see CJ_D30_INV_006 CJ_D30_INV_005 CJ_D30_INV_006 Note This section is for reference only Actual unit appearance may vary Water Collecting Cover Right Panel ...

Страница 43: ...n with a spanner see CJ_ODU_001 2 Remove the fan 3 Disconnect the connectors for fan motor Blue wire yellow wire red wire brown wire and black wire The blue wire and red wire are on the capacitor The black wire connects with terminal 4 see CJ_ODU_002 CJ_ODU_001 CJ_ODU_002 Note This section is for reference only Actual unit appearance may vary D cut Connectors for fan motor Terminal 1 to 4 ...

Страница 44: ...ssembly Page 40 Procedure Illustration 4 Remove the fixing screws of the fan motor 4 screws see CJ_ODU_003 5 Remove the fan motor CJ_ODU_003 Note This section is for reference only Actual unit appearance may vary Fan Motor ...

Страница 45: ...or Black wire connects with terminal 1 blue wire and red wire connect with the compressor capacitor see CJ_ODU_007 3 Disconnect the wires connected to 4 way valve Blue wires on terminal 2 3 see CJ_ODU_007 4 Remove the fixing screw of the compressor capacitor then pull it out see CJ_ODU_007 5 Remove the electrical parts see CJ_ ODU_007 CJ_ODU_007 Note This section is for reference only Actual unit ...

Страница 46: ...panel plate electrical parts and fan assembly refer to 1 Panel plate 2 Electrical parts and 3 Fan assembly before disassembling sound blanket Procedure Illustration 1 Remove the sound blanket side and top see CJ_ODU_010 CJ_ODU_010 Note This section is for reference only Actual unit appearance may vary Sound Blanket side Sound Blanket top ...

Страница 47: ...cal parts and fan assembly refer to 1 Panel plate 2 Electrical parts and 3 Fan assembly before disassembling four way valve Procedure Illustration 1 Heat up the brazed parts and then detach the the four way valve and the pipe see CJ_ODU_INV_018 2 Remove the four way valve assembly with pliers CJ_ODU_INV_018 Note This section is for reference only Actual unit appearance may vary ...

Страница 48: ...rts and fan assembly refer to 1 Panel plate 2 Electrical parts and 3 Fan assembly before disassembling compressor Procedure Illustration 1 Remove the flange nut of terminal cover and remove the termianal cover see CJ_ ODU_011 2 Disconnect the connectors see CJ_ ODU_012 CJ_ODU_011 CJ_ODU_012 Note This section is for reference only Actual unit appearance may vary Terminal Cover ...

Страница 49: ...ted on the bottom plate see CJ_ODU_013 4 Heat up the brazed parts and then remove the the discharge pipe and the suction pipe see CJ_ODU_014 5 Lift the compressor from the base pan assembly with pliers CJ_ODU_013 CJ_ODU_014 Note This section is for reference only Actual unit appearance may vary Discharge Pipe Suction Pipe ...

Страница 50: ...ubleshooting by Error Code 77 5 1 Common Check Procedures 77 5 2 E1 EEPROM parameter error diagnosis and solution 78 5 3 E2 Zero crossing detection error diagnosis and solution 79 5 4 E3 Fan speed has been out of control diagnosis and solution 80 5 5 E5 E6 Open circuit or short circuit of temperature sensor diagnosis and solution 82 5 6 EC Refrigerant Leakage Detection diagnosis and solution 83 Tr...

Страница 51: ...splay Display Error Information Solution 1 times OFF E1 EEPROM parameter error Page 56 2 times OFF E2 Zero crossing signal detection error Page 57 3 times OFF E3 The indoor fan speed is operating outside of the normal range Page 58 5 times OFF E5 Indoor room temperature sensor T1 open circuit or short circuit Page 60 6 times OFF E6 Evaporator coil temperature sensor T2 is in open circuit or has sh...

Страница 52: ...ield maintenance NO Problem Solution 1 Unit will not start Page 51 52 2 The power switch is on but fans will not start Page 51 52 3 The temperature on the display board cannot be set Page 51 52 4 Unit is on but the wind is not cold hot Page 51 52 5 Unit runs but shortly stops Page 51 52 6 The unit start ups and stops frequently Page 51 52 7 Unit runs continuously but insufficient cooling heating P...

Страница 53: ... 53 54 5 Condenser Outdoor fan will not start Page 53 54 6 Unit runs but shortly stops Page 53 54 7 Compressor short cycles due to overload Page 53 54 8 High discharge pressure Page 53 54 9 Low discharge pressure Page 53 54 10 High suction pressure Page 53 54 11 Low suction pressure Page 53 54 12 Unit runs continuously but insufficient cooling Page 53 54 13 Too cool Page 53 54 14 Compressor is noi...

Страница 54: ...quired parts according the error code You can find the parts to replace by error code in the following table Part requiring replacement Error Code E1 E2 E3 E5 E6 EC Indoor PCB Indoor fan motor x x x x T1 Sensor x x x x x T2 Sensor x x x x Additional refrigerant x x x x x Compressor x x x x x Capacitor of compressor x x x x x Capacitor of fan motor x x x x x ...

Страница 55: ...ing frequently Unit will not start The power switch is on but fans will not start The temperature on the display board cannot be set Unit is on but the wind is not cold hot Unit runs but shortly stops The unit startup and stop frequently Unit runs continuously but insufficient cooling heating Cool can not change to heat Unit is noisy Test method remedy Test voltage Close the power switch Inspect c...

Страница 56: ...t or outlet of either unit is blocked Interference from cell phone towers and remote boosters Shipping plates remain attached Check heat load Tighten bolts or screws Close all the windows and doors Remove the obstacles Reconnect the power or press ON OFF button on remote control to restart Remove them Others ...

Страница 57: ...rt Condenser Outdoor fan will not start Unit runs but shortly stops Compressor short cycles due to overload High discharge pressure Low discharge pressure High suction pressure Low suction pressure Unit runs continuously but insufficient cooling Too cool Compressor is noisy Horizontal louver can not revolve Test method remedy Test voltage Inspect fuse type size Inspect connections tighten Test cir...

Страница 58: ...bulb Heavy load condition Loosen hold down bolts and or screws Shipping plates remain attached Poor choices of capacity Contact of piping with other piping or external plate Replace the compressor Leak test Replace restricted part Clean or replace Clean coil Check fan Change charged refrigerant volume Clean condenser or remove obstacle Purge evacuate and recharge Remove obstruction to air flow Rem...

Страница 59: ...ture Sensor Check Disconnect the temperature sensor from PCB measure the resistance value with a tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Measure the resistance value of each winding by using the multi meter ...

Страница 60: ...y and turn it on 2 minutes later Is it still displaying the error code The unit is operating normally NO If the EEPROM chip is welded on main PCB replace the main PCB directly Otherwise check if the EEPROM chip plugged in main PCB well YES Is it plugged well Correct the connection NO Replace the indoor outdoor main PCB Remarks The location of the EEPROM chip on the indoor and outdoor PCB is shown ...

Страница 61: ...feedback for 4 minutes or the zero crossing signal time interval is abnormal Recommended parts to prepare Connection mistake PCB faulty Troubleshooting and repair Check the connections and power supply Correct the connections Turn on the unit when the power supply is good NO Indoor main PCB is defective Replace indoor main PCB YES Is it normal ...

Страница 62: ...y fan motor Faulty PCB Troubleshooting and repair YES Power off then restart the unit after 2 minutes Is it within normal parameters Replace the fan motor Does a problem remain The unit is operating normally NO Shut off the power supply Rotate the fan by hand YES Does it turn easily Find the cause of the problem and resolve it NO Check the wiring of fan motor YES Is it improperly wired Ensure prop...

Страница 63: ...and set the unit running in fan mode at high fan speed After running for 15 seconds measure the voltage of pin1 and pin2 If the value of the voltage is less than 100V 208 240V power supply or 50V 115V power supply the PCB must has problems and need to be replaced ...

Страница 64: ...n 4 94V the LED will display the failure Recommended parts to prepare Wiring mistake Faulty sensor Faulty PCB Troubleshooting and repair Check the connection between temperature sensor and PCB Replace indoor or outdoor PCB Is it within acceptable parameters Is it properly wired Ensure proper connections NO Measure the resistance value of the sensor YES Replace the Sensor NO YES ...

Страница 65: ...om indoor air outlet Is there cool air blowing out from indoor air outlet Is it securely attached Is it securely attached NO Check the T2 sensor Check the T2 sensor YES Check system for leakages Check system for leakages NO NO Repair the leakage and recharge the refrigerant Repair the leakage and recharge the refrigerant YES NO The compressor is operating constantly The compressor is operating con...

Страница 66: ...Contents i Temperature Sensor Resistance Value Table for T1 T2 T3 and T4 C K 63 ii Pressure On Service Port 64 Appendix ...

Страница 67: ...171 1 29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1 34 33 3269 41 106 4 96392 81 178 1 13604 121 250 0 35042 2 36 31 5635 42 108 4 76253 82 180 1 09958 122 252 0 3413 3 37 29 9058 43 109 4 5705 83 181 1 06448 123 253 0 33246 4 39 28 3459 44 111 4...

Страница 68: ...85 29 44 95 35 105 40 56 115 46 11 120 48 89 PSI 70 59 93 94 106 116 119 113 117 125 147 154 PSI 75 63 97 99 115 125 124 120 126 132 155 162 PSI 80 67 103 104 123 138 135 129 132 140 162 173 PSI 90 73 112 113 139 152 149 138 145 154 180 189 F C ODT IDT 0 17 5 15 15 9 44 45 7 22 75 23 89 85 29 44 95 35 105 40 56 115 46 11 120 48 89 MPA 70 59 0 64 0 65 0 73 0 8 0 82 0 78 0 81 0 86 1 01 1 06 MPA 75 6...

Страница 69: ...T 57 53 13 89 11 67 47 43 8 33 6 11 37 33 2 78 0 56 27 23 2 78 5 17 13 8 33 10 56 0 2 17 19 17 18 27 28 PSI 55 439 413 367 330 302 268 239 PSI 65 471 435 386 368 339 297 276 PSI 75 489 457 403 381 362 312 290 F C ODT IDT 57 53 13 89 11 67 47 43 8 33 6 11 37 33 2 78 0 56 27 23 2 78 5 17 13 8 33 10 56 0 2 17 19 17 18 27 28 MPA 55 3 03 2 85 2 53 2 28 2 08 1 85 1 65 MPA 65 3 25 3 00 2 66 2 54 2 33 2 0...

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