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2. Ba d In ech n 00 tg 10 0 jo paso SEND alle loo lan M tr ka A o bI do ill TE no SEI eu 00 SUL a Draut A Bei e i el Elle O e Cie B Alle EN n atte te ate s N All N m Si N B Cile Seil Ss bal Cie Gau DN Lee WEN So uoneoipul apo WEIT 1 dund ale UONEIIUNWWOD od UMS MOJ J9 EM dojs ajoway AMES ESA RA A o ESO IES ES ES PS ES PAS PA Io PEE Pels 9J0UI9H 900810008 1200 amp 1420kW 63 Air cooled screw chiller technical manual MCAC CTSM 2014 02 2 Recommended cable and mould case circuit breaker Electric cable mm Capacity of Type breaker Phase ine line PE line A Note a IO tis recommended that only LLwe 7 a aran this unit In high altitude areas with 240 10 50 high temperature temperature 720 27185 2120 630 derating should be considered the 900 185 240 120 120 830 capacity of breaker device should be 1000 2 240 2 120 1000 increased properly 1200 2404 300 1204 150 1000 1420 2 400 2 240 1260 Note The length of leading in power cables in the unit cannot exceed 180 m
3. Weight to be supported by spring isolator kg B c bpj amp EJ rja nj ti J Model SS 15 Air cooled screw chiller technical manual MCAC CTSM 2014 02 6 LSBLGW1000 C Unit mm Chilled wat chilled water outlet 7 8 DN15 DNIS0 DOLL 2050 2280 Foundation bolt M14 Model Weight to be supported by spring isolator kg ACC A A u 16 Air cooled screw chiller technical manual MCAC CTSM 2014 02 7 LSBLGW1200 C Unit mm Chilled water inlet chilled water outlet DN200 4223 id 3930 2640 150 9640 E I 400 1800 1500 1500 __ 1800 1800 Kk N B C E F Control box aalt Sab Unit bottom QJ A Foundation Foundation bolt M14 Pa t GI H J K al Ip Model Weight to be supported by spring isolator kg s ce e r e s KT t 17 Air cooled screw chiller technical manual MCAC CTSM 2014 02 8 LSBLGW1420 C Unit mm C450 AZ i chilled water inlet chilled water outlet 6800 DN200 an 3930 wm
4. Multi units status 2012 04 29 sun 13 05 22 Please choose the module to query Unit NO 4 Scan All Multi units status In this page you can query the status of different modules through choosing the corresponding module button also can check the status of all modules meanwhile through master monitoring Master monitoring page Click on seen to enter the next page it will show the information of all connected units as following The communication alarm information status refrigerant type of each unit can be inquired in the following pages 54 Air cooled screw chiller technical manual 2012 04 29 sun 13 05 22 0 Master Communication Alarm Normal Normal Normal Normal Click on PgDn to enter the next page 2012 04 29 sun 13 05 22 0 Master 1 slave 2 slave E slave SE 4st slave Note Finish Oil Restart Min running LWT too LWT too Heating Delay NO NO NO NO NO Normal Normal Normal Normal Normal time NO NO NO NO NO Status Stop Stop Stop Stop Stop Low NO NO NO NO NO High NO Ne Ne Ne Ne MCAC CTSM 2014 02 Defrosting Refrigerant R134a R134a R134a R134a R134a vom bac Debug CD Max 8 units can achieve combination control the unconnected unit can access the combination control system at any time as long as the unit is powered on and connected with the system by communication cable 2 The Status
5. measures shall be taken to the removed filter to prevent it from directly contacting with the air LJ a iu If the dry filter core is dirt or has absorbed too much moisture it must be replaced with a dry one During the operation inspect whether the dry filter is blocked and whether the temperatures at the dry filter inlet and outlet are close in normal conditions If there is obvious temperature difference above 5 C between the front and end of the filter or even that frost exists at the end of the filter it is likely to block the dry filter Seriously blocked dry filter must be cleaned or replaced If frost exists at the end the dry filler is seriously hlacked If the temperature difference between dry filter front and end exceeds 5C the dry filter is likely blocked 84 Air cooled screw chiller technical manual VIII Troubleshooting 1 List of failures Failure Name of Source display failure of failure Flow switch failure Freeze protection High press ure alarm Low press ure alarm Compress or internal protection Oil level protection Oil differential pressure protection Contactor Contactor Contactor failure failure Flow switch failure High press ure alarm Low press ure alarm Compress or internal protection Oil level protection Oil differential pressure protection Flow switch Antifreez e Switch Hi
6. Open the display screen enter the password to enter the programming mode e In the alarm state the display alerts the queue e When the producer level under the rolling parameters the display shows the interface To exit the programming maintenance producer and display mode e set a parameter the exit without saving changes e 74 Display screen navigation UP DOWN Increase decrease the value e from the parameter setting mode the display switches to Enter Confirm the list of parameters and return the value Ee Air cooled screw chiller technical manual MCAC CTSM 2014 02 Running status Display all status ET Press amp STIER alve opening B b 46 9 7 Fel Press Esc button b Controller parameter checking and changing Checking or changing repair parameters step DPress one or more Esc to switch to the standard display interface 2 Press Prg display interface input password SPress ENTER input repair level password 22 starting from the rightmost digit each input a digital confirm with ENTER 4 If the password is correct will display the first parameters can be modified network address SPress UP DOWN to select parameters should be set up Press ENTER to move to the parameter value CO Press UP DOWN to modify the parameter value 8 Press ENTER to save the new parameter values 9 Repeat the above 5 6 7 8 step change other parameters Press Esc to exit the rep
7. Remote start stop switch need to use inching switch Lamp input 220VAC 66 Air cooled screw chiller technical manual MCAC CTSM 2014 02 V Installation 1 Unit installation 1 Lifting o Hoist the unit according to the following chart strictly The steel rope shall wind the lifting hook one circle to prevent steel rope slipping and causing danger when the weight is unbalanced eMust use enlargement pole prevent sling damage to the unit aSecurity guard circle should be set up when hoist the unit and also abide by the local safety regulations when hoist the unit Prohibit non staff from entering the security guard circle or staying under the unit and the hoisting crane 2 Foundation The installation foundation shall be designed by professionals according to the site conditions The installation foundation of the unit must be of a cement or steel structure and shall bear the operating weight of the machine and this face must be horizontal Please refer to the Diagram for Installation Foundation of Unit place the steel plate and anti vibration bush on the foundation accurately and execute secondary grouting after installing the unit and foundation bolts together The foundation bolts are generally 60 mm higher than the installation surface Bolt Unit Base Channel Steel Instal
8. displays Run until the unit finish the starting action and enter the process of automatic energy adjustment otherwise displayed shutdown 55 Air cooled screw chiller technical manual MCAC CTSM 2014 02 7 Control screen menu structure Touch screen tree diagram Homepage Mode Setting Main Page Setting Multi Status Alarm Status Password Input Multi Units Alarm History Alarm Status Information Information Query Module Status Status Choose Information 1 Information 2 otatus Current Data Input Output Information Display 56 Air cooled screw chiller technical manual MCAC CTSM 2014 02 8 Safety protection Low pressure YK 0 03 0 10 Switch O R 7000 JUNLE 0 03 0 10MPa High pressure YK 2 1 1 7 C 8 Switch 1 R 7000 JUNLE 1 7 2 1MPa High pressure YK 2 2 1 8 C Switch 2 R 7000 JUNLE 1 8 2 2MPa Low pressure Seo AKS33 Danfoss 1 12bar main control board High pressure KS3000 0 30bar Sensor Note Manual reset is needed for high pressure switch Setting Range 57 Air cooled screw chiller technical manual IV Electrical control 1 Electrical data MCAC CTSM 2014 02 LSBLGWXXX C 380 500 600 720 900 1000 1200 1420 Standard voltage V 380V 3Ph 50Hz Voltage range V 340 420 Max running current A 28 368 412 523 6055 368 824 1046 Max power consumption kW 124 159 187 234 285 318 381 466 Rated current A 212 271 319 398 483 542 650 796 Compressor A Lock
9. in failure status Output status 51 Air cooled screw chiller technical manual MCAC CTSM 2014 02 O I c 1 Reserved 1 Economizer 1 Mid Inject 1 Tail Inject 1 Oil Supply Val 1 Bypass SOL Val Reserved Reserved Reserved Cooling 1 Alarm 1 Compressor Pump 1 25 SOL Val 1 50 SOL Val 1 75 SOL Val o o o m om 7a kal bal 1 o o o m A m ka a a o m TU o a 7 o a TU o m bal 1 Fan NO 1 1 Fan NO 2 1 Fan NO 3 1 Fan NO 4 1 Fan NO 5 1 Fan NO 6 o m kal o 7a kal Ei A Ai Ei v a Le La EJ TI 7 o Sr TU o a 7 El baal 7 o m kal o m kal El T 7 o 4 Output ON as displayed indicates the output point is energized OFF as displayed indicates the output point is de energized lt gt Alarm ALARM MD Warsing Time Recover Time Warning Massage 0 2012 03 13 10 12 10 20 Power Failure Prot t Geseit Alarm information page button in Main Page to enter the alarm information page If there is any alarm the unit will execute alarm procedure action The unit alarm status can t be removed until all of the alarms have been eliminated and alarm shutdown process has been finished Click on Reset button and Fault in main page disappear the unit returns to normal If the warning message is more please click on k2 to check These in red color indicate the alarms which have not be
10. 0 018m2 C kW 0 044m2 C kW 0 086m2 C Ju 0 172m2 C kw pc e le fe c ep ie Pe Sealevel 1 042 1028 1 029 1 020 1 000 1 000 0 977 0 995 600 1027 1037 1014 1 029 0 986 1 009 0 964 1 004 C Cooling capacity P Power 3 Design of the store tank in the system a kW is the unit for cooling capacity L is the unit for G minimum water flow volume in the formula Comfortable type air conditioner G cooling capacityx2 6L Process type cooling G cooling capacityx7 4L b In certain occasion especially in manufacture cooling process for conforming the system water content requirement its necessary to mount a tank equipping with a cut off baffle at the system to avoid water short circuit Please see the following schemes Error Recommendation l Error Recommendation 4 Water pipeline installation Due to the variety of piping practices it is advisable to follow the recommendations of local authorities The installation and insulation of the water pipelines of the air conditioning system shall be designed and guided by design professionals and confirm to the corresponding provisions of the HVAC installation specifications Basically the piping should be designed with a minimum number of bends and changes in elevation to keep system cost down and performance up 71 Air cooled screw chiller technical manual MCAC CTSM 2014 02 a e Check valve Y shape filter Cycle p
11. Air cooled screw chiller technical manual MCAC CTSM 2014 02 Contents PEE UN esl o ETE m 2 1 Installation safety considerations n2auu00000nnnnnn0nonnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnen 2 2 Maintenance safely Goller eege aiias don c coa eue eco sud Xon cba HERR nahen 2 3 Te Salely COMSIGCI AION S ciiciatcie ciska aia accum aeri EAEE EEE Hann UR SU Hann MER EU CUI DSNRETUEEEUEN ET UEEE DEN 3 ll PLOQUCL AI M 5 le General eh te date TOT T EO EE EET 5 AA 7 3 SOG 071110 1 eanan 9 4 Outline dImienslOD session din AAA AA AAA AREA AAA 11 5 ge EEN de EE EE 19 A Ae PR w A M 21 A 22 8 Capacity table E 25 De PROCES SONGS ecc M 29 Il COT TOS asini i Pann A MEINE EIE 30 I oleo TOW e E O O o ENIM NNI TANI NA E UMR NNUS 30 EB i e Y AGUS UNION Esa m E T 31 3 Stall SIOD PEOCESS nenn E 31 A M 34 2 Pans COON mec t 34 6 1 OC o ossea Ea aaa 41 7 Control screen menu SIr UCHUFG eu niaaa a aa aaa 56 8 Safety protection PRcc 57 IV Iure e 58 EE EOC UNC AN Ko lr t seek 58 2 Electrical COMPONENTS INTO AU CUA a 58 3 Electrical components parameter s
12. Differential pressure alarm Low Suction Pressure High Discharge Pressure Beyond the operation range Mode water temp protection EXV module failure Differenti al pressure switch Low pres sure Sensor High pres sure Sensor Ambient temp Sensor entering water temp Sensor Entering Leaving water temp Sensor EXV Control Module MCAC CTSM 201 4 02 To be detected in running Currently there are two modes one is direct use of differential pressure switch namely that when the difference between high pressure and low pressure of the system is smaller than the setting value of 4Bar the differential pressure switch will be switched off and the indicator of differential pressure switch of input interface will be out The other is PLC calculation namely that an alarm will be given if the differential pressure is smaller than 4Bar To be detected in running report protection of too low suction pressure when the refrigeration suction pressure is lower than 1Bar and the units will not be restarted until it is confirmed manually on touch screen as required To be detected in running report protection of high discharge pressure when the discharge pressure is higher than 20Bar and the units will not be restarted until it is confirmed manually on touch screen as required The system will be automatically stopped when the ambient temperature detected by the system exceeds that set by the syste
13. SER 42 2497477 sewa gt HHHH serwo ft List wienn SHE T F 20 E E E N LI 0 40 80 120 160 200 240 280 Evaporator Water Flow m h 23 Air cooled screw chiller technical manual MCAC CTSM 2014 02 3 Minimum volume in pipeline system How to calculate minimum volume in pipeline system W QgT CP Vt W Minimum water volume kg Qg Total cooling heating capacity of the terminal kW T Thermal stability time requirement Take 8 10 x60s CP Water specific heat at constant pressure 4 187kj kg C Vt Water temperature fluctuation required value take 5 C For system Qg is calculated according to the lowest load so that it operates steadily It can also calculated according to 0 5Q 5096 T takes 8 minutes the shortest time that the unit running That is 480s Cp 4 18kj kg Vt 5 C According to the above formula the result is as following W 0 5Q 480 4 18 5 11 48Q kg Note The above formula is only for reference different factor should be adopted to suit for different condition 24 Air cooled screw chiller technical manual MCAC CTSM 2014 02 8 Capacity table Ambient temperature EE QNI Temp Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Capacity Capacity Capacity Capacity Capacity Capacity Capacity kW kW kW kW kW kW kW 5 4180 930 397 3 1014 380 6 108 1 3623 115 7 3498
14. if NO it indicates the shortest running period has not achieved Current data display Please click on 9n button to enter the current data interface the interface indicates current detection data User can enter this interface to query the temperature information when there are alarms such as temperature too high or too low 50 Air cooled screw chiller technical manual MCAC CTSM 2014 02 EWT 0 0 e LWT B 0 0 c Ambient Temp 0 0 Discharge Temp 0 0 c c Fin Temp EXHI Suctlon Pres 0 0 Bar Discharge Pres 0 0 Bar Current data display Input INPUT Remote Start 1 Comp Overload Prot Switch Remote Stop or 1 Fan Overload Prot Switch Water Switch Anti freeze Switch 1 amp High Pres Switch 1 0il Pres Differ Prot Switch 1 Low Pres Switch or 1 Motor Prot Switch Power Prot Switch onc 1 Contactor Protection 1 0il Level Switch Reserved 1 EXV Feedback Input status ON as displayed indicates the input point is closed OFF as displayed indicates the input point is open Note D Remote Start Stop is available only under REMOTE mode 2 Water Switch indicating that current water flow status of chilled water system OFF displayed in no water flow state otherwise ON 3 Contactor Protection indicating that when the compressor start to run the contactor act normally OFF switch to ON 4 All of protection switch is ON in normal condition and OFF
15. 580 7 206 3 5597 2165 9 7153 143 8 6879 1582 668 9 169 8 645 7 182 8 6341 191 9 599 3 208 8 5775 2192 666 8 6 7908 180 9 7673 193 6 739 5 2078 7118 2221 6979 2308 657 0 2503 6308 262 6 8 8400 188 6 815 5 201 1 7870 215 1 7584 229 1 7441 2376 699 9 2575 6711 2690 9 8646 1924 8396 2049 8107 2187 7818 2326 7673 2410 7213 2612 6912 aas 720 Note The inlet outlet water temperature difference is 5 C 26 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Capacity Capacity Capacity Capacity Capacity Capacity Capacity kW kW kW kW kW kW kW ll Ambient temperature Outlet 15 00105 20 85 1 830 0 85 040 48 o utle Model Temp Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power 6 9367 2257 S210 2359 9008 2529 8 85 2702 8540 2812 8080 3047 7719 3188 7 eres 2278 0596 2395 0382 2560 9146 8 mes 2298 9982 2422 9756 2591 9506 2770 9219 2891 8667 3190 8281 3272 9 10564 2319 10368 2448 10131 2622 9867 2805 9558 2931 en 317 1 856 i2 17 61 2895 11526 2528 11254 2714 1095 0 200 7 1057 7 5 170 2440 10027 2649 9758 2805 9402 2988 9296 3096 8690 3354 8318 3513 1000 6 1107 1 246 2 1058 0 267 4 10245 283 6 983
16. Ele x gt dung hid N Nepepeju uoneoiunululop c Ps SHUN NYN m LOO e O P YOUMS MOL O1S 9 0W9 CM HES 9 0WOY 38085008 6008 720kW Ka m PE N DE gg OH ele ao DICH ele gg EE ele IIIA IA eee
17. HMI Main base controller 2 AAA AR A TOS AS Wes T gt gt HIL WELCOME TO USE AIR COOLED SCREW CHILLER 73 KA ECKER CECR EN cer see lt H e o LJ D gt P gt D LA a o E gt o d H 4 30 Air cooled screw chiller technical manual MCAC CTSM 201 4 01 2 Energy adjustment Water Temp LOAD HOLD UNLOAD The unit can adjust capacity by chilled water please see above picture Energy adjustment is districted when starting high pressure is too high High pressure Stee 17Bar 15Bar Normal adjusting 3 Start stop process 31 Air cooled screw chiller technical manual MCAC CTSM 201 4 01 1 Cooling start YES Clear failure NO Start on Water flow switch Stop Clear failure Water temp is ok Oil heating time is enough otop time is enough YES Compressor 2596 SV on Fan motor Compressor Y A start Compressor 5096 SV on 25 SV off Compressor 75 SV on 50 SV off gt Water temp is ok 32 Air cooled screw chiller technical manual MCAC CTSM 201 4 01 2 Cooling stop Running time is enough NO Unload to 50 step Unload to 25 step Compressor off Fan motor off Compressor 25 SV off Chilled pump off 33 Air cooled screw chiller technical manual MCAC CTSM 2014 02 4 Sensors 1 Temperature sensors The temp sensors use NTC thermistors they including chilled leaving water te
18. Overheat discharge temperature protection Overheat discharge temperature Leakage of refrigerant One way valve is blocked NO service of the unit NO False alarm of controller NO center Expansion valve can not open broken capillary pipe or leakage Wrong discharge temperature senso package is used genera y likely afte Inform the customer service MCAC CTSM 2014 02 Inspect and repair the leakage point and then add refrigerant Replace the expansion valve Replace the one way valve nstall correct temperature senso narkana Inspect whether it is frequent if is replace PCB 90 Air cooled screw chiller technical manual MCAC CTSM 2014 02 4 Compressor overload protection Compressor nuarlnan Replace the protection module Compressor protection module is in trouble Inform the customer service center 5 Differential pressure alarm Differential pressure alarm Yes Redee water flow for air conditioning Ambient temperature in by around 60 and restart up the winter is too low for starting machine and then adjust it to the cooling normal flow NO Yes Pressure sensor is in Replace pressure sensor trouble NO Yes Inspect whether it is frequent if es replace PCE False alarm of controller Inform the customer service
19. 02 Relay setings amma rpiesetings mg iP Vaabelonmedepay Oweexdeges Veapezonmedepay vaveopenea Sensor St alarm management Valve ata fixed postion Sensor S2 alarm management Valve ata fixed postion St calibration oft PSS St calbration gain om Cd Pressure sensor St minimum value A Set based on the actual sensor Pressure sensor S1 minimum value g Setbased on the actual sensor See emo SS Language Tg Measurementunt coag ics O eo S ooo y e Werter fe E PiD dervatin ime 18 Low SH protection beta 1 5 Low overheat degree alarm delay Low SH 0 no alarm Low evaporation temperature alarm delay MOP 0 no alarm Low air suction temperature alarm threshold Low air suction temperature alarm delay 0 2 no alarm 6 HMI operation High evaporation temperature alarm Be 5 4 Se 0 0 0 0 0 0 30 delay LOP 0 no alarm d 0 1 Initial Startup Before power up for the first time make sure that the wiring is firm between the control box and the main switch the insulation resistances reach the requirements and the earth wire has been properly installed e The wiring might be loose due to the factors such as long distance transport Carry out complete inspection for the bolts of all wiring terminals for looseness eo Be sure that the
20. 11700 A LI cedo Foundation bolt M14 Model DETER ara M 18 Air cooled screw chiller technical manual MCAC CTSM 2014 02 5 Refrigeration system 1 Refrigeration system diagram 380 500 600 720kW Condenser Drier filter Angle valve m o p gt Angle valve e Economizer 600 720kW used 380 500 Capillary SV DI n E SV X Sight glass Compressor ll l D N EXV S SS Check valve Evaporator 3 Water outlet Water inlet 19 Air cooled screw chiller technical manual MCAC CTSM 2014 02 900 1000 1200 1420kW Condenser Drier filter Angle valve A r i m Angle valve system 1200 1420kW used Economizer Capillary SV ste X Compressor Check ME Evaporator System d u Woter inlet Woter outlet Same to system 20 Air cooled screw chiller technical manual 6 Key parts list RZLC 9 0P3 OS6BGE C ER SRA Series Electric wor 7 expansion zw ETS250 valve u u Pl o valve 2 Safety valve SFV25 T325 24164 187 MCAC CTSM 2014 02 Brand Bitzer Germany RAINBOW China LIANGJIANG China Danfoss Denmark SIF China Danfoss Denmark 21 Air cooled scre
21. 120 8 3243 130 8 310 1 137 1 6 4360 945 4143 102 0 396 6 109 7 376 9 117 3 3625 1224 3375 1326 3220 1388 7 4539 960 4813 1045 412 6 8 amo 975 4483 106 1 4286 129 407 0 1206 3907 1258 363 8 136 1 347 2 es sno ess 107 6 e 195 422 1 1223 4048 1275 376 9 1978 0007 1002 380 5 S274 1207 5045 1313 489 1 1394 4700 1489 4618 1607 4317 1676 413 1 175 3 6 5522 1221 5278 1328 510 5 1412 489 6 1507 4784 156 8 4479 1698 4287 1778 7 5769 1284 5511 1343 5823 143 0 509 9 1527 496 0 159 0 465 3 1723 4454 1803 8 6016 1247 5745 135 8 5540 144 7 530 3 154 7 5156 161 5 4827 1747 4622 1828 L 3 Sma3 12601 sere 1973 5758 1465 sso 1067 5803 1688 500 1 1772 4789 1853 500 Note The inlet outlet water temperature difference is 5 C 23 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Ambient temperature Outlet AE D 85 1 830 0 85 040 48 o Model Temp Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Capacity Capacity Capacity Capacity Capacity Capacity Capacity kW kW kW kW kW kW kW T a 6 6 609 991 969 557 526 E 907 208 8 6946 141 2 6679 1555 640 1 167 2 626 3 180 2 614 5 189 5
22. 2 compressor can be selected to work or not when the compressor meet the conditions it will shut down refer to the stop progress if user want to stop one compressor Read serial pot information 49 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Click on to read serial port information when the unit need to be multiple controlled ead serial port informatio Baud rate Address Data bit Stop bit Check bit Interface Status Click on in main page to check the current unit status information R134a Comp Running 0 H Pump Running Remaining Oil Heating Time 0 0 H Restart Delaying YES Min Running Time Elapsed NO Water Temp Allow Compressor Start wO Alarm Load State Status information The upper left in the page display the refrigerant type the upper right display the station number address the station number of master is set to 1 Note To start up following conditions are required D Restart Delaying need to display NO if YES it indicates the delaying period has not achieved 2 Water Temp Allow Compressor Start need to display YES if NO it indicates the current temperature is not able to meet the compressor starting condition 3 Remaining Oil Heating Time need to display 0 if more than 0 it indicates the oil heating is in process To shut down the following condition is required D Min Running Time Elapsed need to display YES
23. Air cooled screw chiller technical manual MCAC CTSM 2014 02 transfer Thermostatic insulation and enclosing measures shall be taken for the temperature sensing device Inspect whether there is temperature deviation for the entering and leaving water temperature sensor caused by insufficient heat transfer oil in the thermostatic pipe 2 Start up 1 High low voltage value of the system In the case of the unit shut down and waterless in a long time the liquid and gas of the system shall be equivalent and close to the saturation pressure corresponding to the current ambient temperature The correlation of saturation temperatures and pressures the pressures in the list are gage pressures among which the atmospheric pressure is 0 1MPa of R134a refrigerant is shown in appendix 1 In shutdown status the high and low voltages shall be the same and equal to the saturation pressure corresponding to the m rrant tamnaratiira In the pressure gauge scale taking the right figure for example the outside values are pressure values unit bar and the inside values indicate saturation temperatures of refrigerant R134a respectively under the relative pressure The types of refrigerants indicated in different pressure gauges might differ Table 1 R134a Refrigerant pressure Gage pressure MPa R134a refrigerant pressure Gage pressure MPa Refrigerant temperature C Refrigerant temperature C If the hig
24. QW MIDEA AIR COOLED Seal BESTE ENTER Bt EI AR Mode setting page Password input page MODE SETTING LOCAL COOLING l CONTROL MODE LOCAL REMOTE TIMED 2 RUNNING MODE PUMP coe Mode setting page Control mode and working mode are to be set in this page 1 Control mode and running mode which have been selected currently for units are displayed here and this position will correspondingly vary according to the choices of customers when selection of modes is changed 2 Selection of unit control modes including three modes LOCAL REMOTE TIMED i e local control remote control timing control 3 Selection of unit operation modes including three modes PUMP COOLING i e pump mode cooling mode 4 Click on PgDn to enter the next page Main Page 5 Click on BACK return to the homepage of units Note The control mode and running mode can be selected optionally in standby status while only the control mode can be switched in running status 2 Control Mode The selection of the ways of Unit starting stopping LOCAL indicates you can only start or stop the unit through Start Stop button in touch screen REMOTE indicates you can only achieve the unit starting or stopping though the Remote Start and Remote Stop hardware interfaces TIMED indicates the unit can achieve timing start stop according to the time set by the user lt gt Main Pa
25. Wiring must comply with all applicable codes and ordinances Warranty is voided if wiring is not in accordance with specifications An open fuse indicates a short ground or overload Before replacing a fuse or restarting a compressor or fan motor the trouble must be found and corrected 1 3 Copper wire is required for all supply lines in field connection to avoid corrosion and overheat at the connection of terminals The lines and control cables shall be separately paved and equipped with protective pipes to avoid intervention of supply line in control cable Power section It is required to connect the power supply cable to the control cabinet of the unit when it arrives at the jobsite The power supply cable is connected to the terminals of L1 L2 L3 N and PE and the terminals need to be fixed again after 24h running the minimum allowed time Please seal the entering wiring hole after users installed the main power wires in order to avoid the dust entering into electric control cabinet Caution it is suggested that to use appropriate tools to make sure there is a enough height to install the main power wires if the basement is higher than 200 mm Breaking isolation switches should be added between the power cord of users and the unit The 74 Air cooled screw chiller technical manual MCAC CTSM 2014 02 4 10 11 12 13 St St St St capacities of the breaking isolation switches recommended are as
26. center 9 Air cooled screw chiller technical manual MCAC CTSM 2014 02 6 Flow switch failure Flow switch failure NO Yes Water pump is not open Open the water pump No Yes Water flow switch is not Install or Inspect the installed or properly installation of water flow installed switch No Yes Water flow switch is in trouble Service the water flow switch No False alarm of controller Inspect whether it is frequent if yes replace PCB Inform the customer service center Air cooled screw chiller technical manual 7 Power failure Power failure Wrong power phase sequence Phase loss Failure of phase loss protection False alarm of controller Inform the customer service center Yes MCAC CTSM 2014 02 Adjust wiring Inspect power supply Replace phase loss protection Inspect whether it is frequent if yes replace PCB 93 Air cooled screw chiller technical manual IX Appendix 1 1 Temperature Resistance characteristic sheet for discharge temperature sensor NTC sensor characteristic sheet MCAC CTSM 2014 02 Unit Temp C K Ratio KO 5K 90 C Temp Ratio Temp Ratio Temp Ratio Temp Ratio 20 542 7 20 68 66
27. details Control mode and running mode the current mode will be displayed here For example the current page displays that the unit is in a LOCAL MODE and the running mode is PUMP MODE Detection Mode Leaving water control is by default only in the single unit mode with entering water control not allowed entering water control is by default in the multi units combination mode with setting of leaving water control not allowed Combination Mode indicates Single unit when the unit isn t in the case of multi combination control and indicates Multi Units when the unit is in Multi combination control Note When the system has only one unit please don t set to multi unit control This position is the unit alarm display area and alarm information of failure content will be displayed here in a mobile mode in case of any failure in units Functional key area of units It has the functional keys of SETTING ALARM STATUS and Multi Unit through which different operating interfaces are accessible Introduction of their functions will be detailed hereafter Start is required upon completion of unit set up directly click on START button on the lower left and 44 Air cooled screw chiller technical manual MCAC CTSM 2014 02 the following dialog box will be popped up at this moment click on CANCEL if you don t expect to execute the start Confirm Startup Ensure unit start up 8 The sign Failu
28. dirt from damaging the unit The design water pressure of the water chamber is 1 0Mpa Use of the water chamber shall be not exceeding this pressure in order to avoid damaging the evaporator The expansion tank shall be installed 1 1 5m higher than the system and its capacity accounts about 1 10 of the water amount in the whole system The drain connection is arranged on the evaporator cylinder The drain outlet has been equipped with a 1 2 plug The auto discharge air valve is arranged between the high point of the pipeline and the expansion tank The thermometer and pressure gauge are arranged on the straight pipe sections of the water inlet pipeline and drain pipeline and their installation places shall be far away from the elbows The pressure gauge installed shall be vertical to the water pipe and the installation of the thermometer shall ensure that its temperature probe can be inserted into the water pipe directly Each low point shall be fitted with a drain connection so as to drain the remaining water in the system Before operating the unit connect the stop valves to the drain pipeline respectively near the water inlet connection and drain connection The by pass pipeline shall be provided between the water inlet pipe and drain pipe of the evaporator convenient for cleaning and maintenance Use of flexible connections can reduce vibration transfer The chilled water pipeline and expansion tank shall be subjected to insulation
29. distribution capacity is compliant with the power of the unit and the diameter of the selected cable can bear the maximum working current of the unit Inspect whether the red emergency stop button on the control box is in natural state 1 Introduction of Control Screen 4 Air cooled screw chiller technical manual MCAC CTSM 2014 02 KWR i iu IDEA AIR COOLED SCREW CHILLER r3 CZ c ie Home page 1 Power indicator yellow which is on when display is powered on it is off when powered off 2 Status indicator green which flashes at low frequency when display is normally operative otherwise it is off 3 Communication indicator red which flashes at high frequency when display and controller communicate normally otherwise it is off 4 Controller and touch screen procedure version showing the number of controller and touch screen procedure version used by the current unit Basic Interface and Operations Indicate that the system is initializing last about 30 seconds flach ASIN A AN __ MIDEA AIR COOLED SCREW CHILLER After the system initializing is completed please clink on ium button and the Password Input dialog will be popped up please input the User Password 58806 or User Manage Password 40828 and click ENTER into the next interface Mode Setting Page 42 lt gt Air cooled screw chiller technical manual MCAC CTSM 2014 02 EHE 8 als s lt POOE
30. flow switch connectors Optional accessories Installed on evaporator outlet pipe to prevent heat exchange pipe from frost WFS 1001 H crack Honeywell Water flow switch To avoid vibration and noise it must be used between base and foundation Vibration damper MHD Series when install the unit Can be instaled in the control room Through the cable connected to the unit Remote control touch screen it can display all states cabinet information and complete all the operations of unit startup shutdown error confirm etc 29 Air cooled screw chiller technical manual III Controls 1 Control flow chart 2 Compressors 380VAC Double Head 3P N PE Moulded Case Circuit Breaker Miniature Circuit Breaker oouenbeg eseug Compressor e Contactor Star Delta Start Main base controller Terminal for External Signal HMI e g Temp Pressure MCAC CTSM 201 4 01 6 to 10 Fans 14 to 20 Fans Double Head emm Fan Fan Contactor Terminal for Output Action e g Solenoid Valve Main base controller gathers signals through input terminals such as pressure temperature and the state of protection switches and ensures unit s current condition At the same time according to input signal from HMI such as starting signal controller performs the logical operations and outputs signals These signals act on components time relay contactors and so on
31. follows Attention refrigerant selection the previous software settings are replaced by the current hardware settings to avoid the possibility of improper operation of the software leading to wrongly selected refrigerant and damage to the unit Short circuit 1X 35 1X 36 on the wiring terminal 1X in the cabinet and set R22 refrigerant for the unit or R134a is used for the unit In order to avoid wrong control in field connection the liquid control circuit 24 V shall not be in the same conduit with the lead wire of the voltage higher than 24 V The control circuits of various units are all 220 V and for the wiring ways of the control circuits please refer to the wiring diagrams supplied along with the units A unit consists of master compressor and slave compressor communicating via shield wire protected by sleeve and separated from supply line The control output cable to be connected on site shall be AC250V 1mm2 and 0 75mme shield wire 24 V shall be used for control signal line Attentions Read the electrical wiring principle diagram and connect the wires strictly according to the wiring terminal diagram Three core shield cable RVVP3x0 75mm2 shall be used for the connection of the temperature sensor Common two core cable RVV2x0 75mm2 shall be used for the connection of flow switch to connect to the NO contact of the switch i e the opening point when waterless Two buttons can be connected to the external of remote start and sto
32. is started up it must be inspected for damage Check that the refrigerant circuit s is are intact especially that no components or pipes have shifted e g following a shock If in doubt carry out a leak tightness check and verify with the manufacturer that the circuit integrity has not been impaired If damage is detected upon receipt immediately file a claim with the shipping company Strongly recommend employing a specialized company to unload the machine The units can be lifted with slings using only the designated lifting points marked on the unit Use slings with the correct capacity and always follow the lifting instructions on the certified drawings supplied with the unit Safety is only guaranteed if these instructions are carefully followed If this is not the case there is a risk of material deterioration and injuries to personnel Ensure that the valves are correctly installed before operating the unit In certain cases the relief valves are installed on isolating valves These valves are factory supplied lead sealed in the open position This system permits isolation and removal of the relief valves for checking and replacing The relief valves are designed and installed to ensure protection against overpressure caused by fire Ensure good ventilation as accumulation of refrigerant in an enclosed space can displace oxygen and cause asphyxiation or explosions Inhalation of high concentrations vapour is harmful and may c
33. oil grease and other common substances Never exceed the specified maximum operating pressures Verify the allowable maximum high and low side test pressures by checking the instructions in this manual and the pressures given on the unit name plate Don t weld or flame cut the refrigerant pipelines or any refrigerant circuit component until all refrigerant liquid and gas has been removed from chiller Traces of vapour should be displaced with dry air nitrogen Refrigerant in contact with an open flame produces toxic gases The necessary protection equipment must be available and appropriate fire extinguishers for the system and the refrigerant type used must be within easy reach Do not siphon refrigerant Avoid spilling liquid refrigerant on skin or splashing it into the eyes Use safety goggles Wash any spills from the skin with soap and water If liquid refrigerant enters the eyes immediately and abundantly flush the eyes with water and consult a doctor Never apply an open flame or live steam to a refrigerant container Dangerous overpressure can result If it is necessary to heat refrigerant use only warm water Do not re use disposable non returnable cylinders or attempt to refill them It is dangerous and illegal When cylinders are empty evacuate the remaining gas pressure and move the cylinders to a place designated for their recovery Do not incinerate Do not attempt to repair or recondition any safety devices when corrosion
34. one way valve Empty the air re extract vacuum if necessary Inspect whether it is frequent if is replace PCB Air cooled screw chiller technical manual MCAC CTSM 2014 02 2 Low voltage protection Low voltage Yes Reversed cooling and Adjust operation NO Yes Compressor suction Open the suction stop valve is not open era uale NO Yes BTower stops rojatin Or rotates reversed direction when cooling water pump is not open or the low Inspect the blower or open asufficient when heating No Yes Replace the Expansion valve cannot open expansion valve broken capillary pipe or leakage No Yes Inspect and maintain Solenoid valve is not solenoid valve coil valve open body and wiring No Yes Fin heat exchanger for cooling is too dirty or aged or too heavy Clean heat exchanger encrustation in tube shell fo heating No Yes Replace the One way valve is one way valve blocked NO Adjust the water pipeline system Water pipeline is not property designed When it is closed at the end the water flow is smaller nspect and repair the leakage Leakage of refrigerant point and then add refrigerant False alarm of controller Inspect whether it is frequent i Inform the customer Service center Air cooled screw chiller technical manual 3
35. setting Click on the numerical box the numeric keyboard will appear input the time click ENT to save and take effect Click ESC to cancel the input value Note Please pay special attention in setting of time and date to the fact that setting of non existent date or time is not allowed and we assume no liability or responsibility for setting of non existent date or time and consequence resulting from this setting lt Adjust screen SETTING Brightness o A Contrast E a CEC MC OFF A ON Backlight 10 Battery capacity 0 PgUp BACK User can increase and reduce the brightness and contrast of screen by clicking on rand UU in this page User can also open and close the keypad tone of screen by clicking on ON and OFF User can modify the time of backlight by clicking on the numeric box following the time of backlight Electric control capacity displays the battery capacity of PLC whose battery is used for supplying power for PLC interior time in the case of failure to engage PLC Reset of PLC interior event will be resulted from too long power fail time of PLC module without battery lt gt Automatic On Off If the automatic on off function is needed please switch to TIMED mode in control mode as shown in Automatic On Off Picture 2 firstly then enter user parameters setting page click on button to enter the following page and set the starting times and shutdown times 48
36. treatment and the maintenance and operation part shall be reserved on the valve connections After the air tightness test is carried out and the insulation layer is applied on the pipeline so as to avoid heat transfer and surface condensation the insulation layer shall be covered by moisture proof seal Any water piping to the unit must be protected to prevent freezing There are reserved terminals for the auxiliary electrical heater Logic in PLC will transmit ON OFF signal by checking the leaving evaporator water temperature Note The unit only supply ON OFF signal but not the 220V power If a separate disconnect is used for the 220V supply to the cooler heating cable it should be clearly marked so that it is not accidentally shut off during cold seasons If the unit is used as a replacement chiller on a previously existing piping system the system should be thoroughly flushed prior to unit installation and then regular chilled water analysis and 73 Air cooled screw chiller technical manual MCAC CTSM 2014 02 20 21 22 chemical water treatment is recommended immediately at equipment start up Power on the chilled water pump and inspect its rotation direction The correct rotation direction shall be clockwise if not re inspect the wiring of the pump otart the chilled water pump to circulate water flow Inspect the water pipelines for water leakage and dripping Commission the chilled water pump Observe whether th
37. whether the connection is firm and reliable Values of various EWT DO Ia temperature and pressure points LWT showed in the main Ambient Temp A page of the unit Discharge Temp Fin Temp Suction Pres Discharge Pres Start on pump Inspect whether the flow in the water pump meets the requirements of the unit Inspect whether the power supply of the unit is stable Start on chiller Running parameters The maximum range of parameters for normal operation of R134a refrigerant unit See below table for the maximum range of performance parameters of R134a refrigerant 80 Air cooled screw chiller technical manual Working Condition Discharge temp C Suction temp C Condensation temp C Evaporation temp C Suction super heating degree C Discharge pressure MPa Suction pressure MPa Discharge super heating degree C Super cooling degree C MCAC CTSM 2014 02 Optimal range Limit Range 0 28 0 81 Air cooled screw chiller technical manual MCAC CTSM 2014 02 VII Maintenance In order to ensure the long term safe operation to extend the service life of unit reduce the failure and repair should be regularly maintained and checked on the unit 1 Daily maintenance 1 Switch machine daily by local and remote two modes the local switch unit set see previous page 1 HMI operation local switch part HMI key to open for local mode switch machine electric control box on the door of the emerge
38. 11 26 55 Password A i User parameter setting page 46 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Password error please enter it again Password error page Password Error Page will be popped up when the password is wrong click on button to return Password Input Interface input the password again to enter the next page SETTING Temp Control Range Temp Adjustment Period Cooling Setting Temp LWT Temp Cooling Compressor Start LWT Note D Max in the upper left indicates the upper limit of the setting parameter Min in the upper right indicates the lower limit 2 Automatic On Off Only displaying under Timed mode Explanation D Target Temp Chilled Leaving Water The target temperature of the chiller leaving water 2 Temp Compressor start Chilled Leaving Water One of the compressor starting conditions required to be achieved for the chilled leaving water temperature The compressor can start only at the current chilled leaving water temperature gt the setting value in cooling mode or the current chilled leaving water temperature lt the setting value in heating mode Temp Adjustment Period The time interval between two temperature detections Clock setting 47 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Current Time YYIMM DD 2612763713 TUE 11 52 27 Manual input is allowed Clock Setting Clock
39. 2 3024 961 8 31377 900 6 339 9 861 2 355 8 7 1156 0 248 8 1104 1 269 9 1067 2 286 8 1022 8 306 1 996 0 318 0 934 0 3446 893 4 3607 8 1204 9 250 3 1150 3 272 4 1110 0 290 0 1062 5 309 8 1033 4 322 8 967 5 349 4 925 5 3655 Ba aupa 198A 2740 10527 2001 Ni 9185 10092 3873 10010 0642 9677 804 Note The inlet outlet water temperature difference i IS 5 27 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Ambient temperature utle Model Temp Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Cooling Power Capacity Capacity Capacity Capacity Capacity Capacity Capacity kW kW kW kW kW kW 299 9 2 4 4 8 1468 3 279 4 1403 7 309 2 1348 8 334 9 1289 0 363 6 1242 7 386 8 1169 5 419 7 1124 5 439 7 1200 10 E 6 1562 6 360 0 1515 5 385 4 1460 4 413 8 1405 3 442 3 1375 8 459 7 1296 5 498 7 12454 523 4 8 1659 2 375 0 1610 7 400 1 1554 3 428 1 1497 9 456 1 1468 8 473 3 1381 8 513 1 1325 0 erg 9 1707 6 382 5 1658 3 407 5 1601 3 435 3 15442 463 0 1515 3 480 2 1424 4 520 3 13647 545 0 1420 Note The inlet outlet water temperature difference is 5 C 28 Air cooled screw chiller technical manual MCAC CTSM 2014 01 9 Accessories Standard accessories Water
40. 3 Pump wiring 380VAC 220VAC L1 L2 L3 N L MERE bo q Control cabinet wiring terminal p T A 13 X 14 CH n r Contacto IT AE dE Intermediate relay AE dk Ab ch I Pump motor 4 Water flow switch wiring Typically a water flow switch is installed in the pipe of cooling water system to monitor the flow status of cooling water in real time Once the cooling water stops flowing the water flow switch sends an alarm signal to the controller which will perform timely processing to prevent accidents from occurring Note A water flow switch is only a protection switch and cannot be used as a signal for unit power on or power off 64 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Alert status Water flow normal COM COM NO NO Connect the CDM NC of the water flow switch to NC NC customer terminals 5 and 6 6 Combination wiring Water flow switch Combination connection method 8 Unit 1 Unit or the last unit 2 Unit Customer terminals EL Customer terminals EL Customer terminals EIE DE Mi y o Terminal 9 is t terminal 10 is B terminal 11 is common ground and terminal 12 is for grounding e Communication cables must be connected in series The adoption of any other topology may cause unstable communication or communication failure a For the first unit and the last unit in a series circuit a 120 oh
41. 56 2 769 96 0 704 17 14 500 57 2 666 97 0 683 18 13 831 58 2 568 98 0 662 19 13 198 59 2 473 99 0 643 95 Air cooled screw chiller technical manual MCAC CTSM 2014 02 3 Temperature Resistance characteristic sheet for EXV temp sensor NTC Sensor characteristic sheet Unit Temp C K Ratio KO010K 025 C Temp Ratio Temp Ratio Temp Ratio Temp Ratio 20 67 74 20 12 09 60 3 02 100 0 97 19 64 54 21 11 63 61 2 92 101 0 94 18 61 52 22 11 20 62 2 83 102 0 92 17 58 66 23 10 78 63 2 75 103 0 90 16 55 95 24 10 38 64 2 66 104 0 87 15 53 39 25 10 00 65 2 58 105 0 85 14 50 96 26 9 63 66 2 51 106 0 83 13 48 65 27 9 28 67 2 43 107 0 81 12 46 48 28 8 94 68 2 36 108 0 79 SR 44 41 29 8 62 69 2 29 109 0 77 10 42 25 30 8 31 70 2 22 110 0 75 9 40 56 31 8 01 71 2 16 8 38 76 32 7 72 72 2 10 7 37 05 33 7 45 73 2 04 6 35 43 34 7 19 74 1 98 5 33 89 35 6 94 75 1 92 4 32 43 36 6 69 76 1 87 3 31 04 37 6 46 F 1 81 2 29 72 38 6 24 78 1 76 1 28 47 39 6 03 79 1 71 0 27 28 40 5 82 80 1 66 1 67 74 41 5 63 81 1 62 2 26 13 42 5 43 82 1 57 3 25 03 43 5 25 83 1 53 4 23 99 44 5 08 84 1 49 5 22 99 45 4 91 85 1 45 6 22 05 46 4 74 86 1 41 7 21 15 47 4 59 87 1 37 8 20 29 48 4 44 88 1 33 9 19 40 49 4 30 89 1 30 10 18 70 50 4 16 90 1 26 11 17 96 51 4 02 91 1 23 12 17 24 52 3 90 92 1 20 13 16 55 53 3 7
42. 60 19 59 100 3 702 19 511 9 21 65 62 61 13 11 101 3 595 18 483 22 62 73 62 12 65 102 3 492 17 455 9 23 59 98 63 12 21 103 3 392 16 430 5 24 57 37 64 11 79 104 3 296 15 406 7 25 54 89 65 11 38 105 3 203 14 384 3 26 52 53 66 10 99 106 3 113 13 363 3 27 50 28 67 10 61 107 3 025 12 343 6 28 48 14 68 10 25 108 2 941 11 325 1 29 46 11 69 9 902 109 2 86 10 307 7 30 44 17 70 9 569 110 2 781 9 291 3 31 42 33 71 9 248 111 2 704 8 275 9 32 40 57 72 8 94 112 2 63 7 261 4 33 38 89 73 8 643 113 2 559 6 247 8 34 37 3 74 8 358 114 2 489 5 234 9 35 35 78 75 8 084 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29 15 80 6 859 120 2 117 1 171 9 41 28 81 6 641 121 2 061 2 163 3 42 26 9 82 6 43 122 2 007 3 155 2 43 25 86 83 6 228 123 1 955 4 147 6 44 24 85 84 6 033 124 1 905 5 140 4 45 23 89 85 5 844 125 1 856 6 133 5 46 22 89 86 5 663 126 1 808 7 127 1 47 22 1 87 5 488 127 1 762 8 121 48 21 26 88 5 32 128 1 717 9 115 2 49 20 46 89 5 157 129 1 674 10 109 8 50 19 69 90 5 130 1 632 11 104 6 51 18 96 91 4 849 12 99 69 52 18 26 92 4 703 13 95 05 53 17 58 93 4 562 14 90 66 54 16 94 94 4 426 15 86 49 55 16 32 95 4 294 16 82 54 56 15 73 96 4 167 17 78 79 57 15 16 97 4 045 18 75 24 58 14 62 98 3 927 19 71 86 59 14 09 99 3 812 94 Air cooled screw chiller technical manual MCAC CTSM 2014 02 2 Temperature Resistance chara
43. 7 93 1 16 14 15 90 54 3 65 94 1 13 15 15 28 55 3 53 95 1 10 16 14 68 56 3 42 96 1 08 17 14 12 57 3 31 97 1 05 18 13 57 58 3 21 98 1 02 19 13 06 59 3 11 99 0 99 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Temperature Resistance characteristic sheet for EXV temp sensor NTC Sensor characteristic sheet Unit Temp C K Ratio KO 50K 25 C Temp Ratio Temp Ratio Temp Ratio Temp Ratio 40 1630 77 35 1178 11 30 860 97 25 636 08 20 474 78 15 357 83 10 272 18 5 208 83 0 161 56 5 125 97 10 98 96 15 78 29 20 62 37 25 50 00 30 40 34 35 32 73 40 26 71 45 21 92 50 18 08 55 14 99 60 12 48 65 10 44 70 8 78 75 7 41 80 6 28 85 5 34 90 4 56 95 3 91 100 3 37 105 2 91 110 2 52 115 2 19 120 1 91 125 1 67 130 1 46 135 1 28 140 1 13 145 1 00 150 0 89
44. Air cooled screw chiller technical manual MCAC CTSM 2014 02 2012 03 13 TUE 11 44 18 Manual Input Is allowed Inching switch Automatic On Off setting Any time every day in a week can be selected and the units will be started or stopped at the time points When a period of continuous running time for example from 10 00 Tuesday to 16 00 Thursday is necessary you can set the time 10 00 in starting time and 0 00 in shutdown time on Tuesday and click on Invalid to switch to vang set the time 0 00 in starting time and 16 00 in shutdown time on Thursday and click on Wall to switch to Valid all of the others time buttons are minua Pay attention to that the starting time must be before the shutdown time oince system interior time is used for timing start stop please draw attention to check whether the time of the system is correct when you are using this function lt gt Comm Setting Click on to enter the below page COMBINATION MODE Set the number of multi units 5 Note 1 Comp ON 2 Comp ON only appear in dual compressors units D Mult Units When the unit need to be multiple controlled please contact the after sale service engineers to do settings of the unit After setting well press the Single unit mih button it will turn to base then the number of multi units should be set according to the practical situation 7 t 2 1 comp on 2 comp on No 1 or No
45. D C Weight to be supported by spring isolator kg ode Meohtiobesupporscbyspingicltorke O A CA E BE LSBLGW380 C 869 901 869 901 11 Air cooled screw chiller technical manual MCAC CTSM 2014 02 2 LSBLGW500 C Unit mm K N chilled water outlet chilled water inlet DNO DNI25 Z0 RN 4730 ae ZEN LLL 4680 Boo NER T 1650 T ZU YA 7 E C B A Control box Foundation o O SEES Unit bottom NN Foundation bolt M14 d F E D Weight to be supported by spring isolator kg ode y eiontiobesupporedbyspringisaatr EBEBEZEBEBER LSBLGW500 C 633 855 832 633 855 832 12 Air cooled screw chiller technical manual 3 LSBLGW600 C MCAC CTSM 2014 02 on RZ NB Unit mm chilled water outlet
46. The max loading time in a year h Copper core length m 3000h 264 3000 5000h 294 gt 5000h Inspect whether the electric mode is compliant with that of the unit three phase five line three phase lines one Zero line and one earth wire 380V 10 Inspect whether the maximum phase voltage unbalance is compliant with the requirement 2 for the maximum permissible phase voltage unbalance and 5 for the phase current balance The machine must not be started up when the phase voltage unbalance exceeds 2 If the measured unbalance is excess the power supply sector shall be informed of immediately Inspect whether the supply circuit is the compressor is firmly and properly connected and tighten it if there is any looseness The screws might be loose due to the factors such as long distance transport and hoisting of the master compressor Or the electrical elements e g air switch AC contactor etc in the control cabinet of the master compressor and the compressor might be damaged Carefully inspect all the electrical lines with a multimeter and whether the connections are properly installed Carry out measurement in mega ohm and ensure that there is no short circuit at the shell Inspect whether the earth wire is properly installed and whether the insulation resistance to ground exceeds 2MO And inspect whether the supply line meets the requirement of capacity Inspect whether disconnection switch is installed to the supply line of the s
47. afe and reliable running witch including high and low pressure protection oil pressure difference protection anti freezing protection water flow protection power protection overload protection etc Air cooled screw chiller technical manual 3 Specification Single compressor 380 900 600 720 LSBLGWXXX C Cooling capacity KW Power input KW COP KW kW Semi hermetic screw compressor MCAC CTSM 2014 02 Refrigerant Type Circuit A Quantity Circuit B Quantity Oil recharge Type Circuit A L Circuit B L Circuit A Kg Circuit B kg Control type Evaporator Type Water content L Water flow m h Pressure drop kPa Max design pressure MPa Pipe connection type 125 125 125 150 Water inlet outlet pipe dim mm 376 496 594 720 124 159 187 234 3 03 3 12 3 17 3 07 1 1 1 1 BSE170 BSE170 BSE170 BSE170 30 30 30 32 R134a R134a R134a R134a 76 90 105 140 EXV EXV EXV EXV Shell and tube heat exchanger DX 222 308 340 520 65 4 86 103 2 123 8 39 54 56 58 1 1 1 1 Victaulic Coupling 3810 4680 9800 9800 Condenser Type Fan Quantity Total air flow m h Fan speed rpm Unit length mm Unit width mm Unit height mm Shipping weight kg Running weight kg Fin coil Fin coil Fin coil Fin coil 6 8 10 10 23000 6 23000 8 23000 10 23000 10 940 940 940 940 2280 2280 2280 2280 23 0 23 0 23 0 23 0 3320 4330 5000 5500 3540 4640 5940 6020 The following safety devices are equipped as standard oafety protection device H
48. air parameters modify the program 38 Air cooled screw chiller technical manual MCAC CTSM 2014 02 The following shows the detailed settings 13 pages Drive hardware configuration Network address 198 Drive hardware configuration Type of probe S1 User defined Unit type Drive hardware configuration Type of probe S3 Unused Relay configuration Drive hardware configuration Language Chinese DI2 configuration Disabled Control parameter settings Hot air by pass temperature Hot air by pass temperature EPR back pressure Control parameter settings Enable manual valve positioning Manually set the valve position Ostp Control parameter settings DC power supply mode Drive hardware configuration Refrigerant type Valve type Drive hardware configuration Type of probe S1 Auxiliary control type Disabled Drive hardware configuration Type of probe S4 Unused DII configuration Control parameter settings Overheat degree Valve opening upon start Pre positioning duration Control parameter settings LowSH LOP MOP Control parameter settings HiTcond threshold Constant temperature adjustment point Constant temperature adjustment variance 39 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Checking or changing manufacturer parameters step DPress one or more Esc to switch to the standard display interface 2 Press Prg display interface input password Press ENTER input manufa
49. atures of discharge fin and the environment shall be almost the same and the entering and leaving chilled water temperatures shall be almost the same 10 Before the unit leaves the factory the control cabinet is well connected with main motor electrical actuator and sensor elements of pressure temperature etc Therefore the wiring on site for the user is very simple Only the chilled water flow switch line and chilled water pump linked control line control contact is active need to be connected For the detailed connection way please refer to the circuit wiring diagram in the operation manual for the unit The attached circuit diagram represents the case of air cooled heat pump unit for user s reference as for the details the operation manual supplied with the unit shall be final 11 Target type flow switch is set on the chilled water pipeline which shall be installed at the outlet of the chilled water The NO contact of the target type flow switch shall be connected to the control circuit as per the wiring diagram Note Disordered water flow may lead to wrong action of the flow switch therefore the control cabinet will command the unit to stop after receiving continuous disconnection signals during 10 s 12 The tube where the temperature sensing probe is installed shall be filled with lubricating oil or other grease that will not freeze at the temperature of the leaving chilled water for the convenience of heat 78
50. ause heart irregularities unconsciousness or death Vapour is heavier than air and reduces the amount of oxygen available for breathing These products cause eye and skin irritation Decomposition products are hazardous 2 Maintenance safety considerations Engineers working on the electric or refrigeration components must be authorized trained and fully qualified to do so All refrigerant circuit repairs must be carried out by a trained person fully qualified to work on these units He must have been trained and be familiar with the equipment and the installation All welding operations must be carried out by qualified specialists Any manipulation opening or closing of a shut off valve must be carried out by a qualified and authorized engineer These procedures must be carried out with the unit shut down NOTE The unit must never be left shut down with the liquid line valve closed as liquid refrigerant can be trapped between this valve and the expansion device This valve is situated on the liquid line before the filter drier box During any handling maintenance and service operations the engineers working on the unit must be equipped with safety gloves glasses shoes and protective clothing Never work on a unit that is still energized Never work on any of the electrical components until the general power supply to the unit has been cut using the disconnect switch es in the control box es Air cooled screw chiller technical man
51. control cabinet Its installation requirements are as follows 1 The flow switch shall be installed on the pipe vertically 2 The straight pipe section at each side of the flow switch shall have a length that is at least 5 times the pipe diameter do not install it near the elbow orifice plate or valve Connection user supply Water flow Ta rget 3 Ihe direction of the arrow on the flow switch must be consistent with the direction of water flow 4 In order to prevent vibration of the flow switch remove all air in the water system T2 Air cooled screw chiller technical manual MCAC CTSM 2014 02 13 St St 5 Adjust the flow switch to keep it in open state when the flow is lower than the minimum flow the minimum flow is 7096 of the design flow When the water flow is satisfied the flow switch shall keep in closed state The water filter must be installed before the water inlet pipeline of the unit which shall be provided with a 25 mesh screen This will aid in preventing foreign material from entering and decreasing the performance of the evaporator A strainer should be placed for enough upstream to prevent cavitation at the pump inlet consult pump manufacturer for recommendations The use of a strainer will prolong pump life and help maintain high system performance levels The flushing and insulation of the water pipelines shall be carried out before it is connected with the unit so as to prevent
52. cteristic sheet for water temp sensor ambient temp sensor oil temp sensor NTC sensor characteristic sheet Unit Temp C K Ratio KQ 10K 25 C Temp Ratio Temp Ratio Temp Ratio Temp Ratio 20 103 882 20 12 598 60 2 383 100 0 623 19 97 868 21 12 023 61 2 296 101 0 605 18 92 246 22 11 478 62 2 213 102 0 587 17 86 987 23 10 961 63 2 134 103 0 570 16 82 065 24 10 470 64 2 057 104 0 553 15 77 457 25 10 005 65 1 984 105 0 537 14 73 106 26 9 564 66 1 913 106 0 521 13 69 031 27 9 146 67 1 846 107 0 506 12 65 211 28 8 749 68 1 781 108 0 492 11 61 629 29 8 372 69 1 718 109 0 478 10 58 270 30 8 013 70 1 659 110 0 464 9 55 099 31 7 669 71 1 601 8 52 123 32 7 342 72 1 546 7 49 328 33 7 031 73 1 492 6 46 703 34 6 735 74 1 441 5 44 235 35 6 453 75 1 392 4 41 896 36 6 183 76 1 346 3 39 697 87 5 927 77 1 301 2 37 628 38 5 683 78 1 258 1 35 682 39 5 450 79 1 217 0 33 849 40 5 228 80 1477 1 32 115 41 5 016 81 1 139 2 30 483 42 4 813 82 1 101 3 28 944 43 4 620 83 1 066 4 27 494 44 4 436 84 1 031 5 26 126 45 4 261 85 0 998 6 24 833 46 4 092 86 0 966 7 23 613 47 3 932 87 0 935 8 22 461 48 3 778 88 0 906 9 21 373 49 3 632 89 0 877 10 20 344 50 3 492 90 0 850 11 19 365 51 3 357 91 0 823 12 18 438 52 3 229 92 0 798 13 17 563 53 3 106 93 0 773 14 16 734 54 2 989 94 0 749 15 15 950 55 2 876 95 0 727 16 15 205
53. cturer password starting from the right most digit each input a digital confirm with ENTER 4 If the password is correct it will display the following parameter type list Configuration parameters Sensor parameters Control parameters SUNDE FEGOLAZI OHE SPECIALI The special parameters CONFIS ALLARHI LUFLUDER Alert configuration parameters Valve parameters Press UP DOWN button to select the category and then press ENTER to enter the first class number Press UP DOWN to select parameters to be set and then press ENTER to move to the parameter value Press UP DOWN to modify the parameter value 8 Press ENTER to save the new parameter values 9 Repeat the above 6 7 8 step change other parameters Press Esc to exit the manufacturer parameter modification program 380 500 600 720 900 1000 Unit Type 1200 1420 aa ee pe of the unit Valve e Danfoss DanfossETS250 seca ony cE Automatically brought out by Sensor S1 4 20 mA 0 10 0 V set parameters Setting Control mode mode shell and tube unit parameters Overheat degree Valve opening upon start ee Pre positioning delay pl Valve opening in standby state GENE NENNEN A Power supply mode 1 AC 2 1 24 V DC default value 0 Enable manual valve positioning IE A A Check Manually set the valve position A parameters Auxiliary control vaa 40 Air cooled screw chiller technical manual MCAC CTSM 2014
54. cur however well water or river water used as chilled water may cause much sediment such as furring sand and so on Therefore well water or river water must be filtered and softened in softening water equipment before flowing into chilled water system If sand and clay settle in the evaporator circulation of chilled water may be blocked and thus leading to freezing accidents if hardness of chilled water is too high furring may occur easily and the devices may be corroded Therefore the quality of chilled water should be analyzed before being used such as PH value conductivity concentration of chloride ion concentration of sulfide ion and so on X Applicable standard of water quality for the unit PH Total Conductivity Sulfide Chloride Ammonia Sulfate Silicon Iron Sodium ion Calcium value hardness ion ion ion ion content ion rd lt 50ppm lt 20uV cm 2 No lt 50ppm No lt 50ppm lt 30ppm lt 0 3ppm No lt 50ppm 85 DE requirement 2 Performance adjustment factors The antifreeze must be required according to anyone condition as following 1 The outlet water temperature is below 5 C 2 The ambient temperature is below O C 3 Don t start up the unit for a long time 4 The power supply was cut off and needn t change the water in system Ethylene and Propylene Glycol Factors A glycol solution is required when the unit with condition as mentioned The use of glycol will reduce the performance of t
55. d under stress whether there is friction and collision between the networks and the blades whether there are foreign matters in the network and whether the fin is deformed or damaged caused by collision Operate the fans one by one before operating the unit and inspect whether there is abnormal noise in the fan caused by poor lubrication of the bearing or friction of foreign matters and whether the fan rotates reversely or does not rotate Inspect whether the directional elements such as one way valve solenoid valve electronic expansion valve etc are installed properly The directions of the one way valve and solenoid valve are indicated on the valves As for the thermostatic expansion valve and electronic expansion valve if the valves are upward the direction is generally high in and low out Inspect whether the pressure sensor stop valve dry filter front rear angle valve liquid air sampling stop valve and injection stop valve etc are all open When the unit stops the high and low voltages shall be almost the same After the start up the low voltage decreases and the high voltage increases If there is no voltage change certain time after T11 Air cooled screw chiller technical manual MCAC CTSM 2014 02 the start up inspect whether the liquid air sampling stop valve is open After the unit is installed and before connected it is required to tighten the connections in the electrical cabinet of the unit one by one Ins
56. e water pressure is stable Observe the pressure gauges at the pump inlet and outlet and the readings of the pressure gauges and the pressure difference between the inlet and outlet change slightly when the water pressure is stable Observe whether the operating current of the pump is within the range of rated operating current inspect whether the resistance of the system is too large if the difference between the operating current and rated value is too big eliminate the system failures until the actual operating current is satisfied Inspect whether the water replenishing device for the expansion tank is smooth and the auto discharge air valve in the water system enables auto discharge If the discharge air valve is a manual type open the discharge valve of the chilled water pipeline to discharge all air in the pipeline Adjust the flow and inspect whether the water pressure drop of the evaporator meets the requirement of the units normal operation The pressure at the chilled water inlet and outlet of the unit shall be kept at least 0 2MPa 23 The total water quantity in the system should be sufficient to prevent frequent on off cycling A reasonable minimum quantity would allow for a complete water system turnover in not less than 15 minutes 3 Wiring installation WARNING In order to prevent any accident of injury and death during the site wiring the power supply shall be cut off before the line is connected to the unit
57. ed rotor Amps A 586 805 805 917 586 805 805 917 Max allowed current A 370 450 450 480 370 450 450 480 Rated current A 187 239 278 358 187 239 292 358 Rated power KW 109 6 139 8 163 210 109 6 139 8 171 3 210 Compressor B Locked rotor Amps A 805 805 805 917 Max allowed current A 450 450 450 480 Rated current A 239 239 292 358 Rated power kW 139 8 139 8 171 3 210 Fan Full load Amps each A 5 6 5 6 5 6 5 6 5 6 5 6 5 6 5 6 Power input each KW 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4 Total input KW 14 4 19 2 24 24 33 6 38 4 38 4 48 Crankcase heater Voltage V 220 220 220 220 220 220 220 220 Total input KW 0 3 0 3 0 3 0 3 0 6 0 6 0 6 0 6 Total Amps A 1 36 136 1 36 1 36 2 72 2 72 2 72 2 72 NOTE 1 Customer to specify the exact nominal power supply available at site so that electrical components are selected accurately 2 Main power must be supplied from a single field supplied and mounted fused circuit breaker 3 The compressor crankcase heaters must be energized for hours before the unit is initially started or after a prolonged power disconnection 4 All field wining must be in accordance with local standards 5 Neutral line required on 380V 3Ph 50Hz 5 wires power supply 6 Rated load Amps values are on nominal conditions 7 The 10 voltage variation from the nominal is allowed for a short time not permanent 2 Electrical components introduction 1 Moulded case circuit breaker The
58. en eliminated these in white color indicate the alarms which have been eliminated Note 1 High Pressure Protection is unable to reset in alarm information page manual reset in the high pressure switch installed in the discharge pipe is needed 2 Compressor and fan overload protection are unable to reset automatically please check the relevant thermal relay in the control box to reset manually History Alarm Information Click on button in Alarm Page to enter history alarm information query information as pz Air cooled screw chiller technical manual MCAC CTSM 2014 02 shown in Picture 8 2 Max 5 warning messages can be recorded meanwhile The messages will be updated automatically if there are more messages Current Time 2012 3 13 TUE 9 13 Warning Message LWT 16 4 ke Recently First Alarm EWT 16 4 ke Fin Temp 20 5 Me Cat 20 5 Ke DEIER 52 4 ke Alarm time AC 6 4 EI 2012 3 13 9 43 NN 12 4 ET Olll Pres 11 4 EM BACK History alarm information query Note 1 The history alarm information record the unit operating parameters when there happen unit alarms during the compressor running Interface in English 0 2 Discharge temp sensor failure 28 1 Mode switch failure 2 Fin temp sensor failure 5 6 7 8 9 0 1 2 3 4 5 6 7 4 4 y 4 4 2 2 2 2 2 2 2 2 1 Discharge temp sensor failure 53 Air cooled screw chiller technical manual MCAC CTSM 2014 02
59. er unit started 4 Pressure sensor control a High pressure control High pressure stop 18Bar 17Bar b 27 N FR 14Bar unloading 15Bar Normal adjusting 35 Air cooled screw chiller technical manual MCAC CTSM 2014 02 b Low pressure control low pressure on 5Bar Bar Stop 5 EXV controller control a EXV controller wiring principle 24V DC h Ji n 5g os pos 4 Ju TORT m ET Uo pal anna Zu Alarm output to controlle el d LW L CAREL EXV controller EVD Arsluz 1 21 1 ego ESEZ al S 53 34 IB Dos jul x ie I Start stop relay Suction pressure BF DA M KA From controller transmitter EXV Suction temp thermistor EXV controller is started by main base controller it detects suction pressure and suction temperature and calculate suction superheat Then it control EXV opening depending on super heat If it is wrong EXV will output alarm signal to main base controller b Controller display The interface of EXV controller can not display and set parameter on unit it only displays running status OPEN Openthevae Series CLOSE lose he valve Testen The drive is not Drive power connected to power supply If parameters need to be displayed and set the interface should be changed 36 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Remove cover Change display _ gt Display rn anie our Tasted dem
60. etting uuususnnaannonnnnannonnnnnnunnnnnnnunnnnnnnnnnnnnnunnnnnnnennnnn 60 ds d Ce KT du Le is nad 63 Me Cur a IA A AE N 67 A d UC de 67 2 Water pipeline system installation uuuusuunnaaunennnnnnnonnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 70 A 74 Vie COMMISSION usina 76 Lo Pre Star UD rra 76 NEED UD t 79 Vie INANE Ile oc sure sus ee eins RR UM 82 1T Daily maintenant RR m m 82 2 Maintenant E 82 E to Le Le du e M 85 AA SEE A 85 2 COMMON LOUDICSIOO UNG WE 88 IX ADDENGIK m 94 Manufacture reserves the right to discontinue or change at any time specifications or designs without notices and without incurring obligations Air cooled screw chiller technical manual MCAC CTSM 2014 02 I Safety precautions Before use read through the operating instructions to ensure proper using Please keep it well so that the professional technician can refer to it anytime 1 Installation safety considerations Access to the unit must be reserved to authorized personnel qualified and trained in monitoring and maintenance The access limitation device must be installed by the customer After the unit has been received when it is ready to be installed or reinstalled and before it
61. ge 43 iF Air cooled screw chiller technical manual MCAC CTSM 2014 02 2012 03 13 TUE 09 42 50 5 1 SYSTEM STATUS STANDBY SETTING CONTROL MODE LOCAL ALARM 2 6 RUNNING MODE COOLING STATUS 3 DETECTION MODE LWT CONTROL 4 COMBINATION MODE SINGLE UNIT Multi Status 7 8 9 10 11 Main page System Status Current system status of units is displayed here The status of system possibly displayed is as follows Standby status in normal condition displaying Standby status after the unit is powered on Running status indicating that starting of unit compressors has been finished entering the running status after double head Start of one compressor and it has entered the process of automatic energy adjustment from this point Pause status The unit enters Pause status when the current detection water temperature chilled outlet water temperature in single unit or chilled inlet water temperature in Multi units is lower than the setting temperature of unit pause The compressor start to run until the current detection temperature is higher than the setting temperature of compressor start then the unit enter Running status Shutting down status the status display shutting down after the unit has been confirmed to execute shutdown action After finished the unit enters Standby Status Protection status indicating that the unit is in a failure status currently click on alarm information to see alarm
62. gh pres sure switch Low pres sure switch Motor protector Oil level switch Oil differenti al pressure switch MCAC CTSM 2014 02 Control logic The flow switch will be detected in 3 minutes of pump running If the flow switch of unit module is off all the time for 5S successively it shall be reported for flow switch protection Execute this failure unit in the failure stop procedure save the content of failure Confirm this failure manually on touch screen as required after resetting the flow switch detection will not be carried out in the period of stop nor started until the pump runs for 3 minutes When leaving water temperature in a unit modular unit is less than or equal to 3C and the mechanical antifreeze switch is switched off report freeze protection immediately stop this unit in the failure stop procedure and save the content of failure Save the content of failure Do not switch on the unit modular unit to be detected during both stop and running in accordance with the conditions of temperature and time until this failure is confirmed manually on touch screen as required after failure is eliminated To be detected during both stop and running Switch off the high pressure switch when discharge pressure of the system is higher than 20Bar report high pressure protection stop the module immediately in the failure stop procedure and save the content of failure Reset will not be allowed until system pressure is
63. h low voltage deviates much from the saturation pressure corresponding to the current temperature more than 2bar maybe there is leakage or insufficient refrigerant in the system Inspect whether the oil heating of the unit is normal Before start up it is necessary to inspect whether the oil heating in the unit is available and whether there is the condition that the oil heater does not work because of no power supply It is particularly important in winter when the temperature is low and the failure of oil heating might lead to poor lubrication of the unit The optimum working temperature for current types of lubricating oil is generally around 40 C 79 Air cooled screw chiller technical manual MCAC CTSM 2014 02 Compressor oil heater is working when the unit is Inspect whether there is alarm for trouble of the display screen if there is the trouble must be corrected Inspect the electronic expansion valve control module for alarm trouble Inspect whether various temperature points displayed on the display screen are within the normal range Before the operation of the unit the showed temperatures of discharge fin and the ambient temperature are close to the current actual ambient temperature and whether the entering and leaving water temperatures are close to the water temperature at the user side If there is any obvious deviation of the above temperatures inspect whether the temperature sensor is in normal condition and
64. happens during operation and downtime is less than 3hrs no heating time delay is needed when unit restarts If it exceeds 3hrs 0 5h heating time is need If it exceeds 5hrs 2hrs heating time is need 34 Air cooled screw chiller technical manual MCAC CTSM 2014 02 2 Fan Control The number of operating fan as required is according to the discharge pressure For example for LSBLGW500 C there are 8 fans divided into 5 groups Opening condition as follow Dis pres bar P10 Settable P9 Settable P8 Settable PT Settable P6 Settable P5 Settable P4 Settable P3 Settable P2 Settable P1 Settable Open 1 2 3 4 5 groups fans Open 1 2 3 4 groups fans Open 1 2 3 groups fans Cooking mode fan coto 3 Solenoid valve control a Compressor suction injection solenoid valve control Compressor suction injection solenoid valve control is opened when running discharge temperature is higher than setting value default 100 C it is closed when discharge temperature is lower than setting value default 90 C b Compressor central injection solenoid valve control Compressor central injection solenoid valve control is opened when running discharge temperature is higher than setting value default 85 C it is closed when discharge temperature is lower than setting value default 75 C c Economizer solenoid valve control Economizer solenoid valve is opened aft
65. he unit depending on concentration Ethylene Glycol modification coefficient Freezing point C Quality of glycol 9 Cooling capacity Power Water Water flow modification modification resistance modification 9 i09 190 mm 19 09 10 20 30 10 50 Propylene Glycol Quality of glycol Modification coefficient Freezing 95 Cooling capacity Power Water Water flow point C modification modification resistance modification 1 000 1 000 1 000 1 000 10 099 0992 1 029 1 013 20 0 979 30 40 505 0925 096 2056 1145 Units operating with glycol solutions are not included in the ARI Certification Program Altitude correction factors Performance tables are based at sea level Elevations other than sea level affect the performance of the unit The decreased air density will reduce condenser capacity and reduce the unit s performance For 70 Air cooled screw chiller technical manual MCAC CTSM 2014 02 performance at elevations other than sea level refer to below table Maximum allowable altitude is 1800meters Evaporator temperature drop factors Performance tables are based on a 5 C temperature drop through the evaporator Adjustment factors for applications with temperature ranges from 3 C to 6 in follow table Temperature drops outside this range can affect the control system s capability to maintain acceptable control and are not recommended Fouling Factor Fouling Factor m
66. i mac De COINS ire contact nce Mont be under good contact con ition without damage bolt well fixed Assistant relay Once Month No abnormal action EU ME mitos Once Month Act according to the time set Ooo o 2 Please have the qualification of the after sale service engineer to check Refrigeration circle 1 Inspection unit control and protection setting value 2 3 Check the electrical wiring is or not loose if loose to timely fastening 4 check compressor oil system Check the reliability of electrical components should be promptly replaced unreliable or failure parts 5 check pump and water system 3 Replacing dry filter Before replacing dry filter core filter directly close the angle valves at both ends to discharge the residual refrigerant in the dry filter After the replacement fix the end cover tight extract vacuum and then add 2 3kg refrigerant 83 Air cooled screw chiller technical manual MCAC CTSM 2014 02 If only to clean the dry filter but not to replace it before removal of the filter ensure that the refrigerant in the dry filter is completely discharged and the dry filter has remained not in use for a time to ensure the temperature of the dry filter core is close to the ambient temperature so that the removed dry filter core with low temperature would not cause the moisture in the air to immediately reach to the dew point to condense and absorb water Protective
67. igh pressure protection Low pressure protection Compressor overload protection Fans overload protection High discharge temp protection Power failure protection Contactor protection Water flow protection Motor protection Low oil level protection Differential pressure protection Note 1 Nominal cooling capacities are based on the following conditions Chilled water inlet outlet temp 12 C 7 C Outdoor temp DB AWB 35 C 24 C 2 The applicable ambient temperature range of R134a air cooled screw units is 15 C 43 C 3 Water side fouling factor 0 086m2 C kW Air cooled screw chiller technical manual Dual compressors MCAC CTSM 2014 02 LSBLGWXXX C 900 1000 1200 1420 Cooling capacity KW 902 996 1203 1419 Power input KW 285 318 381 466 COP KW kW 3 16 3 13 3 15 3 04 Semi hermetic screw compressor Circuit A Quantity 1 1 1 1 Circuit B Quantity 1 1 1 1 Oil recharge Type BSE170 BSE170 BSE170 BSE170 Circuit A L 30 30 30 32 Circuit B L 30 30 30 32 Refrigerant Type R134a R134a R134a R134a Circuit A kg 76 90 105 140 Circuit B kg 90 90 105 140 Control type EXV EXV EXV EXV Evaporator Type Shell and tube heat exchanger DX Water content L 620 600 770 910 Water flow m3 h 154 8 172 206 4 244 2 Pressure drop kPa 74 75 71 69 Max pressure MPa 1 1 1 1 Pipe connection type Victaulic Coupling Water inlet outlet pipe dim mm 150 150 200 200 Condenser Type Fin coil Fin coil Fin coil Fin coil Fan Quantity 14 16 16 20 Tota
68. ilure will be eliminated after power gets right Notes phase lack phase stagger of power will be detected during both initial stage of power on and unit running To be detected in running the fin temperature of the system is higher than 65 C and the failure record indicates that the fin temperature is too high To be detected in running the discharge temperature of the system is higher than 110 C and the failure record indicates that the discharge temperature is too high owitch off compressors in case of failure of the sensor itself owitch off of pump and fans will be delayed The failure indicator of display board will be on and a corresponding alarm mark will be displayed in Failure Query The compressors will not be restarted until the failure of sensor is eliminated and the failure signal must be cleared manually otherwise it cannot be cleared Do not restart the units until confirming manually on touch screen as required when the suction pressure detected by the system is lower than the setting value for continuously 1s Do not restart the units until confirming manually on touch screen as required when the discharge pressure detected by the system is lower than the setting value for continuously 1s 86 Air cooled screw chiller technical manual Differential pressure alarm LOW Suction Pressure High Discharge Pressure Beyond the operation range Mode water temp protection EXV module failure
69. ing motor which controls the valve status A special purpose electronic expansion valve control module is required to 77 drive the electronic expansion valve di es et E E CH el A A s be When the solenoid valve is energized the electromagnetic coil generates electromagnetic force to pull up the 8 Solenoid valve closed component from the valve seat and the valve is open When the solenoid valve is powered off the spring pushes the closed component to the valve seat once the electromagnetic force disappears and the valve is closed Voltage of the solenoid valve washer is AC220V and it is driven directly by the main control board output 59 Air cooled screw chiller technical manual MCAC CTSM 2014 02 3 Electrical components parameter setting 1 Moulded case circuit breaker TEST key to press to test whether the breaker is F normal in stop condition bur E Tripping value O1 01 01 D la in O gt Q Unit Type Compressor Startup Maximum Running Value Current Current of the Entire Unit r 600 805 1312 900 586 805 HH 3204400 500 500 500 500 630 630 Remarks O O1 O1 CO CO O O h O O O o 2 Power protector n 4 71380 rk 415 Y 208 gt BOW 2 ui 10s lt U e WI 6 16 4 18 2 20 8 Power LED on lighting Running LED normal lighting fault off Power protector use Schneider RM17TU type D Selec
70. invalid when the unit is in failure The unit can start normally only when all of the alarm have been eliminated and reset manually on the touch screen interface Confirm Startup When the current ambient temperature is beyond the allowed running range the below page will be popped up 45 Air cooled screw chiller technical manual MCAC CTSM 2014 02 AMBIENT TEMPERATURE BEYOND THE RANGE UNIT STOP If the current temperature return to the rage click to the OK and the unit will start to run normally Shutting down operation STOP Click on stor button and the Confirm Shutdown dialog will be popped up Click on Confirm if you ensure execution of Shutdown action the system status indicates Shutting down Note The system status indicates shutting down even the requirements of shutting down the compressor are not meet The unit will execute shutdown action automatically after all of the requirements have been satisfied Confirm Shutdown confirm fl Cancel The action of 4 functional keys in main page will be detailed in subsequent sections lt gt Setting SETTING Click on in main page to enter the password page Click on the dialog box of password input an input keyboard will be popped up in the interface input user manage password 40828 then click on Enter in numeric keyboard the dialog box disappears click on ENTER to enter User Parameter Setting Page 2812783713 TUE
71. l air flow m3 h 23000 14 23000 16 23000 16 23000 20 Fan speed rom 940 940 940 940 Unit length mm 8800 9640 9640 11700 Unit width mm 2280 2280 2280 2280 Unit height mm 2430 2430 2430 2430 Shipping weight kg 7750 8900 9100 11100 Running weight kg 8370 9500 9870 12010 The following safety devices are equipped as standard High pressure protection Low pressure protection Compressor overload protection Fans overload protection High discharge temp protection Power failure protection Contactor protection Water flow protection Motor protection Low oil level protection Differential pressure protection Safety protection device Note 1 Nominal cooling capacities are based on the following conditions Chilled water inlet outlet temp 12 C 7 C Outdoor temp DB WB 35 C 24 C 2 The applicable ambient temperature range of R134a air cooled screw units is 15 C 43 C 3 Water side fouling factor 0 086m2 C kW 10 Air cooled screw chiller technical manual MCAC CTSM 2014 02 4 Outline dimension 1 LSBLGW380 C Unit mm chilled water outlet chilled vater inlet DI n MIDS 2242 ed RER E _ 2 7 e EN Ser 3810 893 ii 1600 I E 8j 2 Control box Foundation oO O i o Unit bottom N N Foundation bolt M14 Y i
72. l coated fan guard protects each fan Outstanding reliability Full factory testing of all the units ensures a trouble free start up Extensive test makes certain that each safety and operating control is properly adjusted and operates correctly The unit has passed full factory test before being delivered to ensure the reliable working on the site Transport simulation test in the laboratory on a vibrating table Simple structure easy Installation The unit can be placed in service after being connected with power supply and water supply during field installation Standard flange connection and wire mesh to the electrical panel make the installation easy and simple State of technique accuracy control The sensors related to control and other assemblies are equipped by factory and strictly tested Intelligent control The unit is controlled by micro controller and has the automatic control functions of fault diagnosis energy management and anti freezing monitoring which ensures the high efficiency operation of the unit and more convenient in use The unit with RS485 open protocol communication interface BMS compatible The startup and shutdown of each unit is controlled by the host computer reducing the running cost to the lowest Complete and safe control system All electrically control elements are designed and selected with stable quality and reliable function The unit designed with multiple security measures ensure the s
73. lation Drain Groove Surface Su Washer Cement Mortar Link Kit Secondary Groutin in eh Anti vibration j Gg Bush Steel Plate y j x 4 9 lt q Concrete If the unit will be installed on the top of the building which vibration level should be restricted It is recommended to use spring isolators as absorber please refer to following diagram Unit Bottom Spring Shock Absorber Foundation 67 Air cooled screw chiller technical manual MCAC CTSM 2014 02 3 Dimensions amp Vibration Isolators Vibration isolators are recommended for all roof mounted installations or wherever vibration transmission is a consideration Neoprene Isolation is optional it is recommended for normal installations and provides good performance in most applications for the least cost opring isolators are level adjustable spring and cage type isolators mounted under the unit base rails Deflection may vary slightly by application opring isolator MHD 850 202502301043 Mei Huan Yan Cheng City opring isolator MHD 1050 202502301044 Mei Huan Yan Cheng City F The housing of MHD series with aluminum magnesium alloy material could prevent the vibration isolator from rustiness forever and enlarge the use life The structure also has new improvement with an anti side force function for better stabi
74. lity and safety of unit It can be freely adjusted as per balancing situation of unit to guarantee its work under all situations Technical data of MHD kg N mm kg mm OUTER SIZE mm AA ee 68 Air cooled screw chiller technical manual MCAC CTSM 2014 02 4 Spaces Reserve the spaces required for unit installation operation and maintenance The installation place of the unit shall be free from the effects of fire inflammables corrosive gas or waste gas as much as possible the ventilation space shall be reserved there proper measures shall be taken to reduce noise and vibration whenever possible When the units are installed on the horizontal plane without obstacles the longitudinal distance between the units shall be kept above 1m the transverse distance between the units shall be kept above 1 8 m and such distances shall be as large as possible if there are obstacles at both sides of the unit the distance between the unit and obstacles shall be kept above 1 8 m if there are obstacles above the unit the distance between the unit and obstacles shall be kept above 2 5 m The removable post for compressor service access must not be blocked at either side of the unit There must be no obstruction under the fans 69 Air cooled screw chiller technical manual MCAC CTSM 2014 02 2 Water pipeline system installation 1 Water quality control When industrial water is used as chilled water little furring may oc
75. lower than the setting value after protection occurs Do not switch on the units in accordance with the conditions of temperature and time until this failure is confirmed manually on touch screen as required after failure is eliminated To be detected during both stop and running Switch off the low pressure switch when discharge pressure of the system is lower than Bar report low pressure protection stop the module immediately in the failure stop procedure and save the content of failure To be detected during both stop and running Switch off the protection switch in compressor in the case of high temperature of compressor winding or high compressor discharge temperature or phase sequence error of compressor power or phase lack Stop the units immediately in the failure stop procedure and save the content of failure Do not switch on the units in accordance with the conditions of temperature and time until this failure is confirmed manually on touch screen as required after failure is eliminated To be continuously monitored prior to start report oil level protection in case of continuous switch off of oil level switch for 3S and start of compressor is not allowed to be detected in running switch off the oil level switch in case of continuous switch off of oil level switch of compressor for 60S during running of compressor Then report oil level switch protection Immediately stop the units in the failure stop procedure and save the co
76. m for continuously 5 minutes Detect water temperature in the refrigeration mode after start for 5 minutes and report mode water temp protection when leaving water temperature is not lower than entering water temperature for continuously 5s Start detection upon power on of units and report immediately failure of EXV module when the alarm output point of EXV control module is switched off 87 Air cooled screw chiller technical manual 2 Common troubleshooting 1 High voltage protection High voltage protection Reversed cooling and heating Blower stops rotating or r tatss in reversed direction when cooling water pump is not open or the flow insufficient when heating Expansion valve can not be started NO Press controller is in trouble NO in heat exchanger for cooling is too dirty or aged or too heavy encrustation in tube shell for heating NO One way valve is blocked NO Air exists in system generally likely after service of the unit NO False alarm of controller NO Inform the customer service center Yes Yes Yes Yes Yes Yes Yes MCAC CTSM 2014 02 Adjust operation mode Inspect the blower or open the water pump Replace the expansion valve Replace the press controller Replace the heat exchanger Replace the
77. m resistor must be connected between terminal 9 and terminal 10 as shown in the preceding figure amp Dual head unit is considered a unit A maximum of eight units can be connected DIP settings for main base controller Unitconnecon method Unitconnecon method method Smi on or Emm o mr owe ie re ot on orF Eme on om p arp or cei ne er For on poor 0 Notes oPlease power off the system after DIP settings Note To use the combination function software configuration is also required except for unit connection Click Parameter Setting on the homepage to access a new page for password settings 7 Others wiring Air cooled screw chiller technical manual MCAC CTSM 2014 02 The wiring ports for remote start stop flow switch water pump linked control alarm indication etc are reserved in the electrical cabinet of the unit with the numbers shown in the diagram below Only double head Customer wiring terminal Inside electric control cabinet Liz do 2 8 ee 13141516171819202122232 control cabinet F Y S m Ss _ E SF E et o O E C an S oi 2 E S F e E O 3 o q gE S EA Saas RE E EK USA 0590 EY m ci ke
78. m water inlet DN125 5 1703 2350 whe el j 5800 y 150 3000 1000 1500 2000 2280 2180 Control box Foundation Unit bottom Foundation bolt M14 EN to be supported by spring isolator kg M f 1x 2 38 23 3 P 13 Air cooled screw chiller technical manual 4 LSBLGW720 C 23410 chilled water outlet DEE 9000 chilled water inlet DN150 MCAC CTSM 2014 02 Unit mm 2280 2180 Control box Foundation Unit bottom Foundation bolt M14 Weight to be supported by spring isolator kg nive Cw wem we om Dm 14 Air cooled screw chiller technical manual MCAC CTSM 2014 02 5 LSBLGW900 C unit Unit mm chilled water outlet DN15 EOL chilled water inlet DN151 8800 150 3800 _ S64 a deg cus ICO er deu uec DESI us Control box 4 Unit bottom E Foundation Foundation bolt M14 FP e y
79. mould case circuit breaker is mainly used in a non frequently operated low voltage distribution line or used as a power switch in the switch cabinet It can connect or disconnect a load circuit isolate power and provide protection for circuits electric devices and motors In the case of overcurrent overload or short circuit the circuit breaker disconnects the circuit automatically The applied mould case circuit breaker 58 Air cooled screw chiller technical manual MCAC CTSM 2014 02 provides overload and short circuit protection 2 Power protector This module is used to detect power supply and provide protection in case of phase loss phase TE sequence and under voltage of incoming line power so as to prevent damage to the compressor or other components caused by power failure Some models also provide protection TE for overvoltage and three phase imbalance 3 Time relay and intermediate relay e The time relay is an automatic switch device which performs delayed control based the electromagnetic or mechanical principles It controls the star delta switching time for the compressor contactor The preset time is star operation time 6s The coil voltage is AC 220V The rated contact current is usually low and is used for controlling the loop only The intermediate relay delivers intermediate signals among control circuits to increase the number and capacity of contacts Normally the main control board output controls starting and st
80. mp chilled entering water temp ambient temp condenser fin temp discharge temp EXV suction NO Name Type IEEE Chilled entering water temp NTC 10k 225 C Chilled leaving water temp NTC 10kK 25 C Ambient temp NTC 10k 25 C N Discharge temp NTC 5k 90 C CGQ PQI EXV suction temp NTC 10k 25 C 2 Pressure sensors The pressure sensors are pressure transmitters including high pressure low pressure EXV suction pressure transmitters Danfoss AKS3000 are used Water temp thermistor Ambient or pipe temp thermistor Pressure transmitter AK3000 5 Parts control 1 Oil heater control In unit sand by period oil heater is energized to keep normal oil temperature When unit starts it is turned off Oil heating time limits gt When cooling water inlet temperature gt 35 C real time value oil heating time for first startup is 0 5h If power down happens during operation and downtime is less than 8hrs no heating time delay is needed when unit restarts If it exceeds 8hrs 0 5h heating time is need gt When cooling water inlet temperature gt 30 C real time value oil heating time for first startup is 1h If power down happens during operation and downtime is less than 5hrs no heating time delay is needed when unit restarts If it exceeds 5hrs 1h heating time is need gt When cooling water inlet temperature gt 25 C real time value oil heating time for first startup is 2hrs If power down
81. ncy stop switch used in machine repair debugging or emergency shutdown usually do not use 2 During operation of the unit should irregularly check the water temperature oil level of compressor high and low pressure voltage current and so on such as abnormal timely find out the reasons troubleshooting 2 Maintenance 1 Schedule Maintenance items Eee Qualify standards Settlement Note requency Judge whether there is abnormal Nose AMT sound by hearing ere Watch whether the swings of y I General M Sca the center of the Vibration Anytime distribution pipes and components Chiller are too large Voltage Rated voltage is within 10 EEE It Anime using an iron brush to remove rust Anytime rust besmear again the antirust paint II Appearance Insulation maera flakes Using adhesives sticky Wars leak Onee Month Check whether the exhaust water pipe is blocked Whether there is abnormal sound Noise Anytime when starts up runs or stops eater Above 5MO is required when Once Year testing with DV500V high resistance resistance meter III Compressor Shockproof Flexible when pressed with hands Once Year SS rubber gets old is qualified Once 3000 Pay attention to the noise libation Medium check hours and oil level Once 6000 Confirm the action of safety Medium check hours device and protection device Normal wind amount high Fan Anytime Ar pressure within the normal range exchanger Clean Once Month Normal
82. ntent of failure To be detected in running switch off the oil differential pressure switch when the difference between oil pressure and discharge pressure of compressor is higher than the setting value during running of compressor The indicator of oil differential pressure switch in input interface will be out Do not switch on the units in accordance with the conditions of temperature and time until this failure is confirmed manually on touch screen as required after switch resetting To be detected after start of master report the contactor failure in case of incorrect pull in of contactor Do not switch on the units in accordance with the conditions of temperature and time until this 85 Air cooled screw chiller technical manual MCAC CTSM 2014 02 failure is confirmed manually on touch screen as required after switch resetting Compress Compress Or or overload sor overload Fans Fans Compres overload relay Fans overload overload overload relay Power Power Phase Failure Failure sequence protector High Fin High Fin Fin temp temp temp sensor High Discharge temp Leaving water temp sensor failure Entering water temp sensor failure High Discharge temp Leaving water temp sensor failure Entering water temp sensor failure Fin temp Fin temp Fin temp Sensor Sensor Sensor failure failure Ambient temp sensor failure Discharge temp sensor failure Suc
83. opping of loads such as motor and water pump by using the intermediate relay to drive the contactor coil The coil power supply can be DC or AC Our standard screw compressor model uses the AC220V coil 4 Compressor and fan thermal overload relay The thermal overload relay works based on the principle of heating effect of electric current With inverse time limit action feature which is similar to the permissible overload feature of the motor it is used to provide overcurrent protection for the compressor and fan For compressor overload protection the major loop current of the motor is converted to an AC 0 5 A current signal by the current mutual inductor Then the thermal overload relay performs overload protection For fan overload protection the thermal overload relay is connected in series with the major loop 6 Current transformer and transducer The current transformer transforms primary current with a larger value to secondary current with a smaller value for the purpose of protection or measurement A current transformer with transformation ratio of 400 5 can transform 400A current to 5A A transducer transduces the measured current to DC voltage or DC current After the current transformer transforms the current to AC 0 5 A current signals the transducer outputs 4 20 mA analog signal based on the linear scale to the main control board T Electronic expansion valve The electronic expansion valve is equipped with a stepp
84. or build up of foreign material rust dirt scale etc is found within the valve body or mechanism If necessary replace the device Do not install safety valves in series or backwards Ensure that you are using the correct refrigerant type before recharging the unit Charging any refrigerant other than the original charge type R 134a will impair machine operation and can even lead to a destruction of the compressors The compressors operating with this refrigerant type are lubricated with a synthetic ATTENTION No part of the unit must be used as a walkway rack or support Periodically check and repair or if necessary replace any component or piping that shows signs of damage Air cooled screw chiller technical manual MCAC CTSM 2014 02 The refrigerant pipelines can break under the weight and release refrigerant causing personal injury Do not climb on a machine Use a platform or staging to work at higher levels Use mechanical lifting equipment crane hoist winch etc to lift or move heavy components For lighter components use lifting equipment when there is a risk of slipping or losing your balance Use only original replacement parts for any repair or component replacement Consult the list of replacement parts that corresponds to the specification of the original equipment Do not drain water circuits containing industrial brines without informing the technical service department at the installation site or a competent bod
85. p If the customer desires the linked control of the water pump connect the water pump as shown in the diagram where an intermediate relay is required If the function of linked control of water pump is not needed ensure that the water pump is started before starting the machine CAUTION An independent power supply box needs to be equipped with the power supply of the water pump The wiring ports for remote start stop flow switch cool warm switch water pump linked control alarm indication etc are reserved in the electrical cabinet of the unit with the numbers shown in the diagram below Passive inching button is used for remote start and stop and the flow switch must be connected to the NO contact or the machine cannot be started Passive holding switch is used for cool warm switch e g common selection switch Controls of large power electrical appliances such as water pump and user electric heating must be interfaced with a relay or the PLC might be burned Other outputs can be directly connected to indicator lamps or alarms T3 Air cooled screw chiller technical manual MCAC CTSM 2014 02 VI Commissioning 1 Pre start up 1 Electrical system inspection Inspect whether power distribution capacity is compliant with the power of the unit before the first start up and whether the diameter of the selected cable can bear the maximum working current of the master compressor The max economical conveying distance
86. pect the bolts of the unit for looseness After the unit is transported and installed it is required to inspect whether the fixing bolts of the unit e g fixing bolts at compressor base angle at post and beam of the unit and at pipe clamp etc and of the electrical elements e g fixing bolts of PLC and of insulating transformer and connection bolts of upper lower terminals of AC contactor etc are firmly fixed Inspect the looseness of the connections in the electrical cabinet especially the electric part in the cabinet The parts connected by bolts might be loose due to transportation If there is any looseness tighten it to avoid burnout of circuit or element caused by poor contact Inspect the looseness of the terminals and poor contact caused by vibration and collision during transportation and installation especially the electric All terminals of all heat Elon points of all l l RR relays of the fan must terminals are firm and reliable before electrification be firmand reliable o aa e NN mS M y 5 i 4 A LL NN Y a Agi Ve ZA All connection points of terminals must be firm and raliahla Inspect all terminals for firmness and reliability before electrification Inspect whether there is poor contact and short circuit caused by dust moisture etc in the electrical cabinet and whether the values of all temperature sensors are normal During the shutdown of the machine the indicated temper
87. re to start please check the status will appear when the conditions of compressor stating can t be required 9 There is a rotate button with a key beside the touch screen When the units need to be maintained by the user or after sale service personnel while expecting to see parameters from the touch screen the user may rotate the button to the service point and System under maintenance please don t start up will be displayed below main page at that moment Start operation is not allowed at this moment Any action of maintenance or power operation shall not be taken in the absence of personnel who have been specially trained and certified 10 Help information abbreviation of words in units will be explained in detail in help interface 11 Click on BACK return to previous page of units mode selection interface Starting Operation The system is in pause state when the water pump has been completed to open but the compressor is unable to start because some other factors can t satisfy the condition of compressor starting the interface indicates Failure to start please check the status The starting conditions include oil heating time restart delay the temperature of compressor starting In this case only when all of the conditions have been meet the unit starts to operate the compressor otherwise the sign Failure to start please check the status will keep displaying in the main page Note Clicking on button is
88. relay value 250 300 x 5 4 17 Note Use a value that is smaller than the calculated one For example in the preceding calculation the 61 Air cooled screw chiller technical manual MCAC CTSM 2014 02 calculated value is 4 17 in practice set the value to 4 15 Unit Type Maximum Running Transformation Ratio of Thermal Relay Value of Current of Compressor Current Transformer ae 380 26 3005 400 5 me hy 600 369 4005 46 720 Ian J 605 33 IF 900 2614331 3005 405 45 43 10002 3314331 405 233 1200 _369 3869 3005 46 O 1420 ara 1 4005 38 Fan motor thermal relay value Unit Type Fan quantity Maximum Running Current Thermal Relay Value of fan of fan motor motor 62 MCAC CTSM 2014 02 Air cooled screw chiller technical manual Field wiring 4 1 Wiring diagram O Q5 bg ee gt E popopo See
89. t the voltage class For standard units the voltage is 380 V 2 Set the delay to 6s 3 Set the under voltage value to 10 Note Set the processing parameters only when the system is powered off Air cooled screw chiller technical manual MCAC CTSM 2014 02 3 Time Relay Time s up LED Up display green Power LED On display red Time relay use Omron H3Y type 4 Compressor and fan thermal overload relay Thermal overload relay takes advantage of heating effect to protect the compressor and fans Reset key to press to reset the overload relay if there is compressor overload protection Current setting panel to set the protection current value Heset key to press to reset the overload relay if there is compressor overload protection TEST key to press to test whether the overload relay is normal in stop condition otop key to press to make the output in off state Current setting panel to set the protection current value Note Fan overload relay only apply to LRD series of Schneider brand Compressor thermal relay value The calculation of compressor overload value transformation ratio of current mutual inductor is A B is as follows Maximum running current of compressor current mutual inductor A x B Thermal relay value of compressor For example if the maximum running current of compressor is 250 A and the transformation ratio of current mutual inductor is 300 5 Thermal
90. tant flow and variable temperature issrewsone eo e o GPM 233 304 365 436 046 608 22 Air cooled screw chiller technical manual MCAC CTSM 2014 02 LSBLGW1200 C 727 248 1092 LSBLGW1420 C 863 293 1290 Pressure Drop kPa Evaporator Water Pressure Drop kPa Evaporator Water 120 Evaporator Water Pressure Drop Curve SRE ESA EET ET EA ES Mt ii 100 PEEL e SR TAREE K 73 EEE E a ERR RT ER EU AAA so CEET In EI ar m DE ES E E A EET EE EEN A a E E WS ER LSBLGW500 C SC ee EE ies pner ES pom 60 ES Ee p Lr ESI E ES ZBEEED T BEN ER E pin AE ao EOI TN HO REA ER ORI T SES Pei ES SES SE 20 0 0 20 40 60 80 100 120 140 160 Evaporator Water Flow m h Evaporator Water Pressure Drop Curve MO SSE SS NES YS RE CR TOS CA U A A GS CSE ZR YO SG IS GN SE Er EI 1 E E DER ERS EEES EA EI E CIR EE SER EE Se EA EEES EE TU E FEES HERR EH ssuew 200 ch 100 EEE EET E T E 1 LSBLGW900 C PIA LSBLGW1200 C AAA AA DE D enden aint AAA EI Fo qj ET hdqcb bud SS SS WS GE ES BE HR Y CE ES SC OI Rhcd4 1 4 R h bL E GE ee EE E AR ao LS re BE BEE ber pes es apen ei eg UT eMe LE E T SE DE EG ES ERRE A LII SC QUE E za E SIE E GE E ZIEH E Da e ES J BERI ER IER Ae os Po TOA Eo 1 3 qd 3b RRS EES a EE E en SEE UE DEE JO DE SIE EE E A EE E DER TE E ES E GE CS OR RY LIE 1 E DNE EE Ed 134 ER ES EA ESA E SA EA EE E DS SS HO Ei SS DE ME EE A Ol AS CA AC DEI sS SS EER EEE SS Em 40
91. tion temp sensor failure Low press ure alarm Ambient temp sensor failure Discharge temp sensor failure Suction temp sensor failure Low press ure alarm High press High press ure alarm ure alarm Discharg e temp Sensor Leaving water temp Sensor Entering water temp Sensor Ambient temp Sensor Discharg e temp Sensor Suction temp Sensor Low pres sure switch High pres sure switch Report compressor overload protection when the current value of unit compressor is greater than the setting value and energy accumulated to result in thermo relay trip Stop the module immediately in the failure stop procedure and save the content of failure Do not switch on the units in accordance with the conditions of temperature and time until this failure is confirmed manually on touch screen as required after failure is eliminated Report fans motor overload protection when the current value of unit fans is greater than the setting value and energy accumulated to result in thermo relay trip Stop the compressors and fans simultaneously immediately for this module and save the content of failure Do not switch on the units in accordance with the conditions of temperature and time until this failure is confirmed manually on touch screen as required after switch resetting To be detected at any time report power failure in cases of high low voltage of power or phase unbalance and phase lack Fa
92. to open and the cores shall be tightly locked to prevent leakage of refrigerant Inspect whether moisture content of the system exceeds the limit Excessive moisture content in the refrigerant system of the unit might cause ice block copper plating etc that would seriously affect the safety of the unit Therefore the dryness of the refrigerant system of the unit shall be inspected from the sight glass before and during operation of the unit purple indicating dry and pink moist as shown in the below figure When the color turns to red the filter core in the unit shall be replaced with a dry one Sufficient lubricating oil in the oil tank not lower than 1 2 of the oil level in the high oil immersion lens and no deterioration blackness Inspect the oil level and quality before start up for the two factors have direct impact on the performance and reliability of the unit There must be sufficient lubricating oil in the unit And during the shutdown of the unit the high oil immersion lens must be full of oil When the unit is in stable operation the oil level in the high oil immersion lens should be at least above the 1 2 position And there shall be no deterioration blackness of the lubricating oil or else qualified lubricating oil shall be changed before operating the unit Coil fin cooling fan shall rotate in correct direction without reverse rotation or shutdown Before operation of the unit Inspect whether the fan networks are deforme
93. tor screw compressor equipped with a high efficiency motor and a variable capacity valve that can adjust the capacity of 2596 50 75 and 10096 in 4 stages Stepless control is optional and permits exact matching of the cooling capacity to the actual load Electronic expansion device permits the operation at a lower condensing pressure and improve the utilization of the evaporator heat exchange surface superheat control Economizer system with electronic expansion device for increases the cooling capacity Automatic scheduling of the Chiller s compressors allows the chiller to match the fluctuating cooling load and conserve energy with each unit running at its peak efficiency 50 25 Discharge Gas Oil Pressure Lower operating noise The twin screw compressor adopts the strong points of gapless loss high efficiency cubage low noise few easy workout parts Double wall structure not only compensates the pressure but also significantly reduces the noise Cast iron structure of the compressor casing and oil separator can reduce the noise significantly Low noise fans made of a composite material are now even quieter and do not generate intrusive low frequency noise Rigid fan mounting avoids start up noise Multiple direct drive dynamically balanced propeller fans operate at low tip speeds for maximum Air cooled screw chiller technical manual MCAC CTSM 2014 02 efficiency and minimum noise and vibration A heavy gauge viny
94. ual MCAC CTSM 2014 02 If any maintenance operations are carried out on the unit lock the power supply circuit in the open position ahead of the machine If the work is interrupted always ensure that all circuits are still deenergized before resuming the work ATTENTION Even if the unit has been switched off the power circuit remains energized unless the unit or circuit disconnect switch is open Refer to the wiring diagram for further details Attach appropriate safety labels At least once a year thoroughly inspect the protection devices valves If the machine operates in a corrosive environment inspect the protection devices more frequently 3 Repair safety considerations All installation parts must be maintained by the personnel in charge in order to avoid material deterioration and injuries to people Faults and leaks must be repaired immediately The authorized technician must have the responsibility to repair the fault immediately Each time repairs have been carried out to the unit the operation of the safety devices must be re checked If a leak occurs or if the refrigerant becomes contaminated remove the complete charge using a recovery unit and store the refrigerant in mobile containers Repair the leak detected and recharge the circuit with the total R 134a charge as indicated on the unit name plate polyolester oil Do not use oxygen to purge lines or to pressurize a machine for any purpose Oxygen gas reacts violently with
95. ump air valve Connect the terminals _ flow tch x Drain water valve 1 The water inlet pipeline and drain pipeline shall be connected according to the requirements of markings on the unit Generally the refrigerant pipe side of the evaporator is the chilled water outlet side 2 The chilled water pipeline system must be provided with the soft connection thermometer pressure 3 4 gauge water filter electronic scale remover check valve target flow controller discharge valve drain valve stop valve expansion tank etc The water system must be fitted with the water pump with appropriate displacement and head so as to ensure normal water supply to the unit The soft connection shall be used between the water pump unit and water system pipelines and the bracket shall be provided to avoid stress on the unit Welding work for installation shall avoid damage to the unit 1 Determination of water pump flow Flow m3 h 1 1 1 2 Unit Cooling Capacity KW 5 8 2 Determination of water pump head Head m Unit Resistance see product parameters Resistance at Maximum End of Pressure Drop see product parameters Pipeline Resistance length of the least favorable loop pipe 0 05 Local Resistance length of the least favorable loop pipe 0 05 0 5 1 1 1 2 The flow switch must be arranged on the drain pipe of the evaporator The flow switch shall be interlocked with the input contact in the
96. upply unit Carry out complete inspect for all connections of the main circuit in the control cabinet and all external connections of the control circuit before power connection e g oil heater compressor electronic protection circulatory water temperature sensor target type flow switch connection water pump linked control communication line connection etc inspect the bolts of the wiring terminal for looseness Inspect whether various electric meters and appliances are properly installed complete and available Inspect the interior and exterior of the electrical cabinet especially various wiring ports for cleanness If the communication lines of the controller and control screen are damaged refer to the diagram below After the inspection for all the above items is complete connect the control cabinet and the supply indication lamp will light up indicating that the oil heater is working Observe whether the phase loss protection is in normal condition if it is green light on close the single pole switch QF2 in the control cabinet then the control circuit begins working and the touch screen and controller are used 76 Air cooled screw chiller technical manual MCAC CTSM 2014 02 in operating 2 Refrigeration System Inspection 1 The discharge line valve and suction line valve of the compressor must be fully open turn 2 There should be no deformation of the fan guard or foreign mattare in it anticlockwise
97. w chiller technical manual MCAC CTSM 2014 02 T Application 1 Operating Range Leaving water Temp 50 150 Max inlet outlet water Temp difference Fouling factor m C kW 0 086 Voltage tolerance Rating Voltage 10 Phase tolerance 2 Power supply frequency Rating frequency 2 Evaporator max working pressure on water side 1 0MPa Compressor max start count 4 times h High corrosive environment and high humidity Environment quality should be avoided l The height of water drainage should not be Drainage system higher than the base of the unit on the spot Storage and transport temperature 25017550 u In 40C does not exceed 50 25 C no RH relative air humidity more than 90 Applicable altitude range No more than 1000m 2 Water Flow Water Drop Pressure Curve Balance the chilled water flow through the evaporator The flow rates must fall between the minimum and maximum values shown in the below table Flow rates below the minimum values shown will result in laminar flow which will reduce efficiency cause erratic operation of the electronic expansion valve and could cause low temperature cutouts On the other hand flow rates exceeding the maximum values shown can cause erosion on the evaporator water connections and tubes even piping breaking Variable chilled water flow through the evaporator while the compressor s are operating is not recommended The chiller control set points are based upon a cons
98. wind amount high situation pressure within the normal range WEF ROW OT Ah Ayie Within 5 of the standard the user side Within the standard NENNEN Antifreeze Make sure it is set above the set V Once Month concentration concentration ele ee Refer to water heat exchanger Water quality Once Month Within the standard quality furring relations drawing Purit Anvtime The low pressure is within the d 2 standard when refrigerating 82 IV Fin heat Air cooled screw chiller technical manual MCAC CTSM 2014 02 Maintenance i Drain all the water if it is not used Ln Waler n Drainage Anytime the distribution for a long time pipe VI High and Whether the Check according to Protection ES low pressure Action Ore gen She Acton Valde match point is switch good VII Pressure Once Half of Compare with correct pressure ae Gauge Ing a year gauge VIII Globe RENE Once Month Smooth action on globe valve valve switch Check whether there is refrigeration media leakage inside Use the IX the Chiller or at the distribution electronic leak l Refrigeration Once Month pipe connecting points detector or media leak Let out all the water inside the blowtorch leak shell and tube heat exchanger detector or soap and check whether there is any water leakage at the water inlet or outlet aaa Above 5MO is required when a Once Month testing with DV500V high resistance meter Insulation layer of the wire must X Electrical Wi O Month d d dit
99. y first Close the entering and leaving water shutoff valves and purge the unit water circuit before working on the components installed on the circuit screen filter pump water flow switch etc Do not loosen the water box bolts until the water boxes have been completely drained Periodically inspect all valves fittings and pipes of the refrigerant and hydronic circuits to ensure that they do not show any corrosion or any signs of leaks It is recommended to wear ear defenders when working near the unit and the unit is in operation Air cooled screw chiller technical manual MCAC CTSM 2014 02 II Product 1 General Information 1 Product line up 902 satewioo0 omovoPvsois omo LSBLGW 1200 C 380V 3Ph 50Hz 1203 LSBLGW 1420 C 380V 3Ph 50Hz 1419 2 Nomenclature B semi hermetic compressor e ob LS water chiller Air cooled screw chiller technical manual MCAC CTSM 2014 02 3 External appearance LSBLGW380 C module LSBLGW500 C module LSBLGW600 C LSBLGW720 C module LSBLGW900 C module LSBLGW1000 C LSBLGW1200 C module LSBLGW1420 C module Air cooled screw chiller technical manual MCAC CTSM 2014 02 2 Feature Environmental care R134a refrigerant Refrigerant of the HFC group with zero ozone depletion potential It is environmentally safe and does not have a phase out date Economical operation cost Extremely high full load and partial load energy efficiency New twin ro

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