Water Cooled Packaged Unit User Manual
Contents
1. alack of water water pump not running or pump failure water flow switch is damaged the line open circuit from water flow switch to mainboard mainboard is poor contact 19 Inlet water temperature sensor fault sensor open circuit or short circuit or Mainboard sensor socket with poor contact 25 indoor fan coil antifreeze C indoor fan coil temperature lt 0 C keep at least one munite and compressor keep working over 10munites outdoor fan and compressor switch are off water cooled unit is off only for compressor 2 indoor fan coil temperature 12 C and keep for 1munite 354 1 24 fault will recovery automatically 26 water temperature difference between after compressor keep working for 3minutes water temperature difference between inlet and outlet lt 10 C inlet and outlet Inlet water temperature gt outlet water temperature when in cooling state or Inlet water temperature lt outlet water temperature when in heating state when the above cases happen and keep for over 2 minutes all the modular compressor stop immediately and give an alarm which need reset manually or restart Temperature difference value cooling outlet water temperature cooling inlet water temperature when in cooling state cooling inlet water temperature cooling outlet water temperature when in heating state Indoor fan coil when indoor fan coil temperature257 C indoor fan run in h2. B 90 seconds minimum running time The system has 90 seconds minimum running time for the compressor make sure the oil has enough time to return to the system Then the compressor can be stopped in the current operation mode C Compressor heating overload protection It will take effective while the compressor is running and the temperature in the fan coil is greater than or equal to 68 C when heating The compressor will stop when the protection take effect The fan run under against the cold wind model in the heating mode The system will recover automatically when the temperature inside coil drops to 50 C or below D Inside coil antifreeze In the refrigeration and dehumidification mode the system enter into the inside coil antifreeze if it meet all the following conditions Inside coil temperature is O C lasting for at least 1 minute moreover The compressor running more than 10 minutes The compressor will be shut down if meet conditions above The system recover automatically when inside coil sensor temperature arrive or above 12 C for at least 1 minute E Refrigerant leakage note that take the sample of the temperature to make comparison should be the value when the compressor start up and the value after the compressor running 15 min 1 Heating status when the compressor running for15 minutes the compressor will be shut down and shows lack of fluoride protection if the indoor coil temperature can not ris
3. C d1 Defrost exiting time 5 20Min Default 10Min d2 Cooling recycle water protect temperature 0 20 C Default 4 C d3 Heating recycle water protect temperature 10 10 C Default 4 C d4 Network address 0 99 Default 0 d5 Temperature difference protect temperature 0 20 C Default 10 C d6 O defaults to power off 1recover the state before power off Default 0 d7 0 Defrost mode 1 1 Defrost mode 2 Default 0 d8 0 With Cooling inlet water protection 1 No Cooling inlet water protection Default 0 d9 0 No Anti cold air protection 1 With Anti cold air Default 1 da Anti cold air declines range 0 10 Default O db O With refrigerant leakage protection 1 Without refrigerant leakage protection Default 1 2 1 12 Fault code Code Fault Fault type when compressor working for 15 minutes in cooling state indoor fan coil temperature can t reduce 2 C for 10s compressor will stop working and give an alarm when 4 Refrigerant leakage compressor working for 15 minutes in heating state indoor fan coil temperature can t rise 2 C for 10s compressor will stop working and give an alarm 5 return air temperature sensor open circuit or short circuit or Mainboard sensor socket with sensor fault poor contact Indoor fan coil temperature sensor fault sensor open circuit or short circuit or Mainbord sensor socket with poor contact Compressor overload When Indoor fan coil temper
4. Preparations for installation a Inspection before installation Please check if there s damage to any parts of units after receiving the cargos also check all items according to packing list to avoid any missing The units are well charged by R407c in system before leaving factory please also check the system pressure to see if there is leakage b Transit Hoist sling or forklift is suggested for transit Please pay attention to protect the unit during transit and keep the units horizontal during the transit to avoid damage to compressor system 2 Installation The units can be installed freely onto the ceiling in toilet in any room in stair well or at outdoor Please note following instructions for installation Installation must be operated by professional people according to local regulations 15 exactly Please consider the space for water pipes power wires and that of maintenance 16 Remark According to standard design of CUBE users have to install the flow switch to the interface of units Please confirm the hoist part can bear the weight of units when they re installed onto ceiling 3 Water Pipe installation All pipe installation must be operated according to local regulations completely And try best to reduce the parts with curve or grade Thermal isolation is not necessary for this system Please pay attention to following instructions a Shake proof parts to the pipe are needed
5. jam between different control systems c Please keep the doors and windows closed during the operation of units to avoid energy lost and low energy efficiency d Please do not operate with wet hands do not wash the units with water directly and controller and PCB box of units should be well damp proof e After using the units for some hours rooms should be well ventilated and kept fresh air for around 15 Please cut off the power supply of units and call CUBE distributors for help if any accidents happen during operation including adust smell sparkles of electric parts smokes and so on Please do not check the units personally in these cases but waiting for the professional service people 5 Maintenance 1 Electric maintenance a There should be exclusive power supply for the units with fluctuation of voltage within 10 Auto air switch is required for system and its rated current should be 1 5 times of running current of system b System must be well earthed c On Off should be operated no more than 4 times per hour Electrical control box should be well damp proof d There s phase protection in system for 3 phase units Please restart the units and adjust the phase connections if system has no response at the first time of power on 2 Maintenance of units a Please prepare well for following points before using units in different seasons Make sure to connect compressors to power supply for more
6. situation lasting for 20 seconds the system won t start up the compressor and alarming at the same time The compressor is running Circulating water temperature lt B C lasting for 180s or gt 32 C lasting for 20S The compressor will be shut down and alarming The system automatically return to normal if it is not under the situation above lasting for 20s A Adjustable range 0 20 C the factory default value is 4 C B Adjustable range 10 10 C the factory default value is 4 C J Cooling water flow protection Normally the water flow switch should be in the closed state after the pumps starting for 35 seconds The compressor will be shut down and alarming if the water flow switch off lasting for 3s The compressor allows to be start up if alarms lasts 60 seconds and recover The flow switch must be on before the compressor starting or it will alarm The system will automatically return to normal once it switch on If the flow fault appears 2 times continuous within 30 minutes of except for the above shut down operation and should alarming immediately The failure cannot be automatically restored it is only can be restart through the open key Only the water flow switch has been restore then the fault alarm can be canceled and restarting K The fault of difference of inlet and outlet water temperature inlet water sensor setting can detect this failure at this moment Starting to test each inlet outlet water temperature d
7. to avoid leakage caused by shake b Maintenance valve is needed users can close the valve during maintenance to cut the connection between system and pipes c Keep enough water pressure in the system d Install filter at the entrance of water pump to stop impurity from entering the system 4 Electric installation Please make sure all wires cables are connected well are not in touch with any running parts of units Connecting cables of units must be YZW 300 500 and all wires cables must meet the requirement of this manual Please make sure the system is well earthed All operations of installation must be in accordance with local regulations Note All protecting amp interlocking devices must be installed and connected to related terminals in control box 17 4 Commissioning Please check the installation of units again and the voltage of power supply before the commissioning If units with 3 phases have no response after connected to power please cut off power and adjust the connection of any of 2 phases Please check the running status of main parts for example the noise and shake of motor compressor the running direction of motor the noise of system and duct etc Please pay attention to following points during commissioning a Indoor temp setting of controller should be reasonable not too high or too low b Please keep the indoor controller away from computer TV and other home appliances to avoid signal
8. DB 27 C WB 19 C 2 Sound pressure measured at a distance of 1 m and a height of 1 5 m above the ground in a clear field 1 2 Dimension 2110 2070 2010 x 1376 _ 580 H 975 910 832 B sal 2 Info of Controller 2 1 Wire controller 2 1 1 Startup amp Shutdown Press key to switch power ON OFF 2 1 2 Mode switch Press lt key to switch mode switch sequence cooling ventilation dehumidification heating auto cooling Cooling only units have no heating and auto mode switch sequence cooling ventilation dehumidification cooling 2 1 3 Air speed switch Press e key to switch air speed switch sequence Low medium high automatic low speed Dehumidification mode can t set up air speed but low air speed ventilation mode has no automatic speed option 2 1 4 Temperature setting Press Jork key one time setting temperature display zone shows temperature value then press ay key to adjust the setting temperature The range of temperature setting 16 30 Celsius degree 2 1 5 Sleeping display When in the mode of cooling heating or auto press Oy key can set up the sleeping mode or not After setting sleeping mode it takes about 8 hours to exit sleeping mode automatically 2 1 6 Timing setting Press lt Dy key one time timing symbol blinki
9. Water Cooled Packaged Unit User Manual Index 1 Production Introducir ars 2 TiS Specific terrano ero 2 1 22 DIMCNSION ette 3 2 info OF Controle casal a 4 A Wire controller escri a a A 4 Dib Startup RESUME A A A pak TANTS we he 4 ZED DZ Mode SWC Wik sess te sce beac Sec aa ra Mente cece TG OR aaa bates aha A A ARTES Cant EG BELA ER Ea Nab NREL DE 4 23 Airspeed SWEN a A A AA aout Ua dake Sys cet Sie Ah cents Mis ene Boao eee 4 DAA Tempera e SCUIN Gees ea aereos aeoks 4 Ded SI SICCDING CISPIGY AAA ost 4 A Oc TIMINGS CHING i foes REO O O OEA 5 DAA Canceling essa a a a ea e a e a a S aaae aeae a a a aaea eia 5 DAIS REY LOCK A O O E 5 2A PAPAMELCHQUOTY osten e ean a a a raja 5 2 1 10 Fahrenheit and Celsius Switching cccscccesscccsscesesccsssccesseecsscecsscecesceeesseecsseecsseecesaeeesseecsseeceeesesaeeesaeeseaeees 5 ZA IL PAGE Ler modification A o 6 Del DF GUE COME revs E ES E O EY 6 2 2 The Control PCB 00 e erect eee nr 8 2 2 1 The YO and DIP switching description of Control PANE ccccsecceseceeseceesseseseecencecesseeesaeecsaceceseeeesaeeesneeseaeees 8 PASADA Main UNCON A RAN 9 22 3 ANI AS TAR RAN 10 2 2 4 Compressor PYOLECHON esan eea a UU io PeR a dio SAA 10 2 2 5 Sensor open short CiU Us oi Eonia 12 2 2 6 No pump Output 2 ii 13 2 27 Cooling MOdE iii ias 13 2 2 8 Ventilation A NS AA 13 2 2 9 Dehumidification mode fresh air models don t have this pattern cccecceccescceseeceesseseeeseeseeseeseeeseeseeseeseen
10. alve are 13 shut down 2 2 9 Dehumidification mode fresh air models don t have this pattern Indoor fan runs at low speed Compressor will be shut down under following condition gt lt compressor running for 10 min or Tr TsS 1 0 C Compressor begin to running under following condition gt The compressor is shut down for 5 minutes and Tr Ts 20 5 C 2 2 10 Heat pump heating mode gt No fresh air function With time protection condition the compressor begin to start up if 1 0 C The compressor stop runing if Tr Ts 1 5 C Indoor wind speed running according to the set the wind speed of the system depend on the following conditions when seting the auto speed wind low speed wind 20s befor the compressor start up then set wind speed Wind speed High medium low 1 0 1 0 2 0 AT C Ts set temperature Tr indoor temperature gt Cold wind resistant After the first time electricity or change the mode first the indoor fan is shuting down under the condition of the compressor is allow to start The indoor fan is allowed to start only the temperature of the indoor coil 2 30 dA C After the indoor fan starts the indoor fan is shut down if the indoor coil temperature lt 25 dA C If the indoor coil temperature 2 40 dA C it will running at setting speed Wind speed Setting speed pe Low speed Shut down the indoor fan 1 i 250 30 C 40 C indoor fan coil temperature Note dA is the range of dec
11. ature is 268 C in heating state dropping to 50 C or below system automatic recovery cooling is without this function Circulating water protection 1 cooling dehumidification mode when compressor is off Circulating water temperature lt A 2 Cor gt 40 C and keep for 20s system will not start compressor and will give an alarm Xx when compressor is on Circulating water temperature lt AC and keep for 180s or gt 47 C and keep for 20s compressor will be off and give an alarm 2 heating mode when compressor is off Circulating water temperature lt B 4 C or gt 30 C and keep for 20s system will not start compressor and will give an alarm when compressor is on r Circulating water temperature lt B C or gt 32 C and keep for20s compressor will be off and give an alarm If it isn t in the above conditions system will automatic recovery the normal state A adjustable range 0 20 C the ex factory Settings is 4 C B adjustable range 10 C 10 C the ex factory Settings is 4 C 10 low pressure protection cut off lack of refrigerant Slow pressure switch damage the line open circuit from low pressure switch to mainboard mainboard is poor contact 11 High pressure protection disconnects refrigerant too much high pressure switch is damaged the line open circuit from high pressure switch to mainboard Dice blockage S mainboard is poor contact 17 water flow switch
12. e of 2 C lasting for 10 seconds 2 cooling status when the compressor running for15 minutes the compressor will be shut down 10 and shows lack of fluoride protection if the indoor coil temperature can not drop of 2 C lasting for 10 seconds The compressor will be stopped and alarm if fluorine leakage failure detection in the first time After 3 minutes compressor protection it will re detect according to the above procedure but the cycle shortened to five minutes if still failed lock the fault and reset by manually switching on off The cycle is 15 5 minutes Only the inside fan can run Heating by anti air cooling mode and compressor can t start anymore when lack of fluoride to protection occurred Turn it off to recover This protection no longer testing in the current cycle mode until the next compressor pitching in cycle if confirmed no leak fluorine Terminate the lack of fluorine testing in following conditions gt Under the system ventilation mode or gt The compressor is unloading due to meeting the setting temperature or Xx Under inside coil defrosting in refrigeration and dehumidification mode Note Setting whether cancel the refrigerant leakage by remote parameter controller cancel refrigerant leakage when the db is 0 the db is 1 refrigerant leakage can make F Heating prevent inside coil from overheating Interior wind jump to high speed when the inside coil temperature rise to 57 C or above The sy
13. ifference of heat exchanger system when the compressor is running for 18 All of the compressors in this module must be stopped immediately if difference of inlet outlet temperature do not tally with the actual operating mode cooling cooling outlet water is lower than the cooling inlet water heating cooling outlet water is higher than the cooling inlet water or the temperature difference is more than 10 C Adjustable 0 20 C lasting for 120s The fault need to manual reset or power off to restart after the failure alarm output Cooling running cooling outlet water temperature cooling returning water temperature Heating running cooling returning water temperature cooling outlet water temperature 2 2 5 Sensor open short circuit A Returning air temperature sensor It s 2 seconds for the fault recovery confirmation The system prohibits the compressor to start up when inspecting the sensor fault continuous The internal fan output low speed wind if it set to automatically speed wind otherwise output according to the speed set 12 B Temperature sensor of the internal coil tube It s 2 seconds for the fault recovery confirmation Non heating mode a If the compressor running up it will begin to inspect after running two min b If the compressor don t start up it will inspect Continuous Sensor failure a Shows fault code b Refrigeration dehumidification Shielding internal coil involve controlling and unit working wi
14. igh Communication fault 26 speed and compressor keep working When indoor fan coil overheating temperature 50 C system will recovery normal state 48 communication line connection is not correct socket is loose contact undesirable PCB plate socket is cold solder joint PS If there are multiple failures occur the fault code will be displayed each one 2 2 The Control PCB 2 2 1 The I O and DIP switching description of control panel Analog quantity input Input serial number Name Al Return air temperature sensor R25 10KQ 3450 Al2 Indoor coil temperature sensor R25 10KQ 3450 Al3 Circulating output water temperature sensor R25 10KQ 3450 Al4 Circulating input water temperature sensor R25 10KQ 3450 DI connecting passive switching public side provide DC12V Input serial num Name DI1 Water flow switch opto isolator DI2 High pressure switch opto isolator DI3 Low pressure switch opto isolator model selection S2 air speed selection OFF three speed fan ON single speed fan S3 Fresh air function OFF without ON with S4 water cooled air cooled selection OFF air cooled ON water cooled to indoor coil S5 Shield some function relative OFF without ON with S6 cooling only or heat pump selection OFF heat pump ON cooling only S7 electrical heating se
15. lection OFF without ON with Input power range 100 256VAC input built in switching power voltage sag 150ms Communication mode CN7 1 4 cord system TTL Maximum communication distance 30m CN7 3 cord system TTL Maximum communication distance 30m RS485 communication communication cable recommend to use Shielded CN8 Twisted Pair with cross section for 0 75 mm It can provide power supply of DC12V 200mA towards exteral DO section Output serial number Name Remarks DO7 25A 5A Compressor Output AC220V DO6 25A 5A Electrical heating Output AC220V cooling only without this item DO5 5A Four way valve Output AC220V cooling only without this item DO4 5A Indoor fan low Output AC220 three speed fan low speed speed Single speed outlet port DO3 5A Indoor fan Output AC220V three speed fan intermediate intermediate speed speed DO2 5A Indoor fan high Output AC220V three speed fan high speed speed DO1 5A Water pump Passive output ps The dial switch of control panel had been set up for machine type please don t change it arbitrarily to avoid occuring the fault 2 2 2 Main function 1 mode cooling ventilation dehumidification heating auto cooling heating 2 air speed indoor high medium low speed 3 protection for compressor keep 3 minutes to start 4 compressor overload heating overload function 5 Refrigerant leakage
16. line against cold wind defualt is OC 0 10Cadjustable The cold wind resistant will be canceled when the line control parameter is d9 It has the funcition when d9 is 1 Clear spare heat control The compressor will be shut down when heating and wind speed as follows only in setting wind speed has the function of Clear spare heat and compressor don t start and the wind at low speed when in the auto wind speed Wind speed Setting speed Low speed Shut down the indoor fan 30 C 37 C 40 C internal fan coil temperature 2 2 11 four way valve System will open the four way valve in heating mode The valve can only be opened after 60 seconds the compressor stopped The compressor allows to start after 4 seconds the four way valve opened 2 2 12 Automatic cold and hot replacement model The system will convert refrigeration heating model automatically when in different indoor temperature set ting temperature and mode switch delayed The system will switch into heating mode in the following conditions lt Ts Tr gt 2 C and lt gt The compressor is shut down gt 10min The system will switch into cooling mode in the following conditions lt Tr Ts gt 2 C and lt gt According to the model Compressor electric heating closed gt 10min The concrete operation are same between and automatic non automatic for cooling and heating 3 Installation Please note that installation and tests can be operated only by professional people 1
17. ng display fault code area display oo which means timing setting undone Then press lt Sy or CY key can set up the time the unit is hour When reduced to 0 it displays Exiting the timing setting when in timing mode timing symbol keep blinking 2 1 7 Canceling Press 2 key can exit in whatever menu Long press lt Ss key for 3 seconds which can cancel all the timing setting 2 1 8 Key lock Long pressing lt ae gt key for 3 seconds can enter key lock out state then will display a symbol of lock which it is effective only for power ON OFF key for common clients Exit the key lock out state in the same way 2 1 9 Parameter query When in key lock out state long pressing lt 8 pork key for 3 seconds can enter parameter query menu as following Temperature Trip zone Temperature Trip zone zone zone CO Return air C2 Outlet water temperature temperature C1 Indoor coil C3 Inlet water temperature temperature 2 1 10 Fahrenheit and Celsius switching When in lock out state press gt Jand key for 3 seconds which can realize the switch between Fahrenheit and Celsius 2 1 11 Parameter modification When in key lock out state long pressing a panal E key for 3 seconds can enter parameter modification menu as following Temperature zone Trip zone do Defrost exiting temperature 10 30 C Default 18
18. protection 1 2 3 4 5 6 Inside coil anti freezing protection 7 Inside fan coil overheating protection 8 Low pressure protection 9 High pressure protection 10 Water flow switch failure 11 Temperature sensor Failure 12 Circulating water temperature protection parameter is adjustable 13 Timing on off setting 14 Compressor is random delayed switch on in order to reduce voltage fluctuation Only effective to the compressor at first pitching in stage 2 2 3 Power on sets A After power on the system get the latest parameters from the permanent memory in the main board Circulating water temperature protection parameters B If the data is wrong system will start with the following default Settings Circulation water temperature protection refrigeration 4 C heating 4 C 2 2 4 Compressor protection A compressor start up protection 1 3min protection When the system needs to be up loaded the compressor is allowed to start up after it meet minimum 3 minutes protection It will shorten the time when the four way valve commutation system reversing that is the compressor be allowed to start up after 4s when four way valve reversing It can be allowed only one shorten compressor protection time every time the four way valve reversing 2 Hardware protection Once the power is cut off and the power supply again compressor startup latency time is 180 seconds The compressor protection time
19. sensees 14 2 2 10 Heat pump heating MOde cccccccccsccceseseceeeeseeceeenneeceeeseeeeeseacecessaaeeeeseaaeeesenaceceneaeeesseaeeseeseeeeesenaeesenenneeees 14 2 2 11 four way VAlV iiinnnn aiii iodo copado indeleble 15 2 2 12 Automatic cold and hot replacement model oooncccinncnonuccnnancnnnnononnnnnnnnonnanonnnnonnn nn ron nn rana nono nn cnn nc ran nc rana ninas 15 IIS AO It 15 A COMMISSIONING ada 18 5 Maintenance viviiecsdecccsietasesecedesssetedascdacacesseisadawesecndarcsisusadeseusdecccaecesedusedessvessuewedavedaredesedad 18 6 Common Malfunction and TreatMent oooncccnnnnccccnnonnncncnonnnnanc cnn nnnnnn cnn nana nn nr nnnnnn cr renacer 19 APPend Donar 20 1 Production Introduction 1 1 Specification ace Mode CSU 085 Cooling capacity TR 8 5 Rated input power Kw 8 2 Rated input current A 14 8 Power Supply 380V 50Hz 3Ph Type Scroll Compressor Qty 1pc Power 9350w Refrigerant R407C Refrigerant charge G 4500 Protection High low pressure protection over heat protection over current protection water break protection Air flow CFM 3529 Power Ww 1100 Static pressure Pa 120 Cooling Water Flow m3 h 6 8 Cooling Water Pipe 1 2 Water resistance kPa 32 Noise dB A 51 Net dimension L W H mm 2110 975 654 Net weight Kg 285 aa Mm 2170 1100 800 Gross weight Kg 300 Notes 1 Water side water inlet outlet temperature 30 C 35 C indoor temperature
20. stem back to normal when the coil temperature 50 C G Low pressure protect input The compressor is in running status the compressor will be shut down and alarming when low pressure protect disconnect time2 30 seconds The system will automatically return to normal once the low pressure switch is reset at closed status 1 It will block the detection at first 30s after the compressor start up 2 The low pressure switch must be off before the compressor start up otherwise it will alarm H High pressure protection input High pressure switch is on in the normal circumstances The compressor will be shut down and alarming if the high pressure protection disconnect and lasting for 1 seconds High pressure switch must be switch on before the compressor start up or it will alarm The system will automatically return to normal once in the closed state 1 The temperature of the cooling water protection 1 Refrigeration dehumidification operation mode The compressor is shut down Circulating water temperature lt A 2 C or gt 40 C and this situation lasting for 20 seconds the system won t start up the compressor and alarming at the same time The compressor is running Circulating water temperature lt A C lasting for 180s or gt 47 C lasting for 20S The compressor will be shut down and alarming 2 Heating operation mode The compressor is shut down Circulating water temperature lt B 4 C or gt 30 C and this
21. switch low air water flow Sundries in condenser high refrigerant charge low air water flow Over fresh air disabled thermal isolation of duct high refrigerant charge Block in air filter block in duct low running speed of ventilator short circuit in duct low environmental temp low refrigerant charge Faults in compressor over refrigerant charge faults in air system parts not well screwed designing problems of duct 19 Adjust phase connection for 380V Check power supply Adjust indoor temp controller Charge refrigerant fix the leakage adjust change the pressure switch clean filters Clean condenser reduce refrigerant clean filters Reduce fresh air repair duct reduce refrigerant Clean air filter clean block sundries adjust speed of ventilator modify duct charge refrigerant Change compressor reduce refrigerant charge repair ventilator fix screws check duct design and repair Appendix Wiring Diagram AD Indoor coil pipe temperature sensor xTl AB Cooling water outlet Q leal a ala rT TY ETY I 213 N PE POWER SUPPLY 380ACV 3PH S0Hz Symbol description AC contactor 20 _s6 Shielding inside coil No shielding inside coil pipe related functions pipe related functions Electric auxiliary heating No electric auxiliary heating
22. th fault c Heating heat pump model Compressor start up then internal fan running under lower speed for 20 seconds and then to the set wind speed Then compressor stop and internal fan running for 30s then stop 30s start 20s stop 30s until the compressor meet running with loading The internal fan will stay stop until fault released allows the compressor pitching in if has other fault stop the compressor for running such as high pressure jump C Circulating water temperature sensor It s 2 seconds for the fault recovery confirmation Continuous inspection for example the fault of the sensor the system prevent compressor from tart up and low speed wind running until the sensor fault is cleared 2 2 6 No pump output Start condition system start the compressor is not allowed to start up at the first 30s after the water pump start up Shut down condition system shut down ventilation mode 2 2 7 Cooling mode Under cooling mode the compressor begin to start up if Tr Ts20 5 C The compressor stop running and enter into the time protection functionth if Tr Ts 1 0 C Indoor wind speed running according to the set the wind speed of the system depend on the following conditions when the wind speed set automatically Wind speed High medium low 0 5 05 1 5 AT C Trindoor temperature Ts set temperature 2 2 8 Ventilation module Only high medium and low speed can choose Compressor circulating pump and four way v
23. than 12 hours before units are power on to reduce the liquid refrigerant in compressors increase the oil temp and reduce abrasion of compressor Check the start and operation of units for the initial use of each time and cut of power supply immediately if anything wrong is found b Clean the return air filters monthly to guarantee the smooth operation of units All cleaning must be operated by professional people 18 c Check and clean the drainage pipe before starting the units to guarantee drainage of condensing water Also check and clean the drainage pipe in winter to avoid freeze down d Do not disassemble the units or maintain personally please call CUBE distributors for help and wait for service people if any faults are found e Make sure to cut off power supply if units will not be used for certain time of period or there ll still be some power consumption And remember to connect units to power for no less than 12 hours before starting the units f All maintenance must be operated when all power supply is cut to avoid accidents 6 Common Malfunction and Treatment Units do not operate with power supply Low pressure switch protector functions High exhaust air pressure High inspiring air pressure Low inspiring air pressure Big operation noise Reverse protection does not function Indoor temp controller is not adjusted well Low refrigerant charge leakage in system fault in pressure
Download Pdf Manuals
Related Search