service manual for HYC-260/360
Contents
1. FLEX res 2 2 ba Sms SS a see EN 1 d ES me FE orm di A om r h P ema p wA cum p L ms HE SERRE gt gt 1 Hull E Installation and Removal of the Compressor Step 1 The compressor is right below the product as shown in the following figure Remove the two screws on the cover plate 36 Step 2 Push up the cover plate to remove it However do not apply excessive force to avoid damage to the product 37 Note Before installing the cover plate align the four snaps at the positions shown in the following figure Then press the cover plate downward to install it in place Step 3 Remove the screws at the four corners of the compressor to remove the compressor 38 39 Gas collection and charge 1 Diagram of refrigerating machine 40 Testing Date Er zt u gt AB EZ SEAR QU ok Ej FRE h THEdoOoxTTHUJIRI FEAR BEOSSFETOOB2CCdOO01 Poo good 8000 7000 6000 dB vidt 5000 5 e 4000 3000 2000 1000 a 156 9 196 2 235 4 274 6 313 8 353 1 392 3 451 5 8 510 1 EH gt E 3 N a 5 A AA NE EB ch2. are two control sensors con and alarm The con sensor is used for first control alarm sensor is used for control if the con sensor is faulty The control fails only when the two sensors are faulty The upper or lower sensor is in the over temperature status The upper control lower control or defrosting sensor is faulty The AC 220 V 110 V power supply is in outage an alarm is generated by the hardware The door is open for 600s or longer time When one of the aforesaid five situations occurs the normally closed contact is closed to enable the remote alarm function An electric bell can be connected to enable the remote alarm function 3 7 Defrosting a Normal defrosting function This function is enabled when the compressor is shut off and disabled when the compressor is started up Start coercive defrosting When the ambient temperature is high or the wet materials are stored and the compressor is started up but the temperature detected by the defrosting sensor is still not higher than 5 C the defrosting relay start up the coil is powered on Stop coercive defrosting When the upper and lower display temperature is not less than 5 6 C or the time is not less than 20 minutes or the temperature of the control sensor and alarm sensor is not less than 7 C the machines stops defrosting and automatically changes to the normal operation status Coercive defrosting is carried out for at most once wi
3. battery is designed with a function to protect against reverse connections The buzzer on the control panel keeps ringing if the anode and cathode of the battery are connected reversely When the 220 V power supply and battery switch are off simultaneously the display panel do not present any data if only the battery switch is on When the 220 V power supply and battery switch are on simultaneously the display panel is powered up after the 220 V storage battery is disconnected Add the display of the temperature at the control point to the network protocol Control Priorities Calibration display gt Temperature setting display gt Normal control E3 display gt E1 display gt E2 display gt E4 display gt temperature display The control panel should be provided with an interface for data communication with a computer When the main power supply is off When a 12 V charge battery is used the battery system will be shut off automatically if the voltage of the charge battery is lower than 10 5 V when an 8 V charge battery is used the battery system will be shut off automatically if the voltage of the charge battery is lower than 7 V The display panel does not display the temperature in the refrigerator at that time all the circuits of the charge battery can be disconnected if the battery switch is off The main control chip shall be plug in type for upgrade at anytime The compressor starts and stops per 10 minutes The service
4. be increased by pressing the Calibration cancellation button it can also be regulated by the Sensor selection button and the regulation value by the Sensor selection button is just opposite to that by the Calibration cancellation button the regulation step value is 0 1 the maximum control temperature difference is 3 C while the minimum is 0 5 after 4 seconds upon the completion of regulation the system will record the set temperature automatically and display ALH while pressing the Calibration cancellation or Sensor selection buttons within 4 seconds the current high temperature alarm temperature will be displayed and the high temperature alarm temperature is set as 6 before delivery The minimum temperature can be increased by pressing the Calibration cancellation button it can also be regulated by the Sensor selection button and the regulation value by the Sensor selection button is just opposite to that by the Calibration cancellation button the minimum temperature is 20 C at most and set temperature ALL at least after 4 seconds upon the completion of regulation the system will record the high temperature alarm temperature automatically and display ALL while pressing the Calibration cancellation or Sensor selection buttons within 4 seconds the current low temperature alarm temperature will be displayed the maximum temperature can be increased by pressing the
5. life of all the boards on a computer board should be not lower than 10 years The power panel should be designed with the function for lightning protection After being wired all the boards on a computer board should have an insulation resistance of not lower than 700 MQ in a test 21 Fault code The main fault codes Turn on the switch 1 The charge battery switch is off or faulty Replace the switch 2 In case of an old control panel detect whether any power outputs from the Replace the battery battery connector on the control panel If Display yes perform the specified operation Replace the new board 3 If no power outputs from the battery power panel or control connector on the control panel The display panel on the computer panel 4 For a new board on the computer the not display Replace the charge battery i charge battery is invalid e temperature 3 The defrosting sensor is open circuited Repair replace value short circuited or damaged pam sensor Display 4 The control sensor is open circuited Repair or replace the ES short circuited or damaged control sensor 5 The lower display sensor Display EM mu Repair or replace the lower open circuited short circuited E2 display sensor damaged 6 The upper display sensor Display mE Repair or replace the upper open circuited short circuited E1 display sensor damaged 22 Paramet
6. Calibration cancellation button again the maximum temperature is set temperature ALH at most and 5 at least it can also be regulated by the Sensor selection button and the regulation value by the Sensor selection button is just opposite to that by the Calibration cancellation button and the maximum temperature is set as 2 C before delivery After 4 seconds upon the completion of regulation the system will record the low temperature alarm temperature automatically and the control temperature setting state will be quitted automatically if there is no operation within 10 seconds The pre set temperature or average temperature of sensor in the refrigerator will be displayed in the digital window again no blinking 3 3 Startup and shutdown temperatures 3 3 1 Startup and shutdown of the compressor is controlled by the control sensor RT2 a Startup temperature of the compressor setting value Ts AOF 0 5 b Shutdown temperature of the compressor setting value Ts AOF 0 5 17 c The shutdown time of the compressor shall not be less than 3 minutes for each time 3 3 21f the compressor is not shut down after operating for one hour continuously it shall be forced to be shut down for 5 minutes at this time the electrical heater is not started but the internal fan operates normally For shutdown of the compressor of each time confirm the accumulated operating time of the compressor and shut it down if the time is m
7. Haier Service Manual FILE No HMRSM 002 06 Pharmaceutical Refrigerator HYC 260 HYC 360 Haier Medical amp Laboratory Products Co Ltd Contents L DESIGNATION is A Gode mH EDS EN 3 PRODUCTAPPEARANCE Lai A Bsa 4 MAIN FUNCTIONS AND FEATURES OF THE PRODUCT ccscsssssssssscsecscesscscsececesssscescscecscsscscscecscescececes 5 DIMENSIONS bero edet A an aT 6 PRODUCT NAMEPLATE Su or uu 7 TECHNICAE PARAMETERS idonee t dede 8 ECIRCUTTE DIAGRAM oa c ien ts 9 COMPRESSOR PARAMETERS UNDER STANDARD CONDITIONS J seen 10 FAN PARAMETERS UNDER STANDARD CONDITIONS J seeeeneneneses 11 TRANSPORTATION AND INSTALLATION siii d a 12 SPECIFICATION OF CONTROL PANEL 260 360 cccscssssssssssssssscssssssescssssssesessssssscessssessceseeees 14 LEA ULT CODE 22 PARAMETERS DISPLAYED ON THE DISPLAY PANEL seen 23 DETAILS OF MAIN REPLACEABLE PARTS OF 360 c ccsssssssssssosssssssscssssssssosssssesessssssecesssssseceseseees 24 DETAILS OF MAIN REPLACEABLE PARTS 260 sememenenenses 25 COMMON FAULTS AND TROUBLESHOOTING MEASURES sseeneeeeeneres 26 tie 27 STRUCTURE DIAGRAM OF THE REFRIGERATION SYSTEM sers 28 INSTALLATION AND REMOVAL OF KEY PARTS u scscssscsssssscsccscecsccececsccscessscscecsscscessscscecsscacenescsceceacacees 29 GAS COLLECTION AND CHARGE sins 40 TEST
8. ING DATE ee ent 41 Designation Regulations for type naming is expressed with pinyin characte Design No Sequence Rated volume value is shown with L Pharmacy Refrigerator Note rated volume can be the gross volume or effective volume the manufacturer can decide it by him according to the actual situation The effective volume value must be marked on the nameplate whether effective volume or gross volume is marked in the product name Examples HYC 360 means that the Pharmaceutical storage refrigerator with the temperature at horizontal and rated effective volume 360L Product appearance 1 Control panel hin Lighting lamp switch Door alarm switch Battery switch Door lock Interior light Doorknob Shelf Caster Structure diagram Note The product color and appearance shall be based on goods in kind Main Functions and Features of the Product Pharmaceutical refrigerator in which the temperature inside the refrigerator is controlled between 2 8 Microcomputer control in which the temperature inside the refrigerator is displayed digitally Automatic defrosting Audible and visual over temperature alarm open alarm and sensor fault alarm can be sent Air cooling system which operates reliably Dimensions HYC 260 D O gt a product nameplate 1 HYC 260 Haier Pharmaceutical Refri
9. ach press of Calibration cancellation button till reaching the maximum value the system default of maximum value is 8 while pressing the Calibration cancellation button again minimum setting state will be achieved the temperature value will be decreased by 0 1 for each press of Sensor selection button till reaching the minimum value the system default of the minimum value is 2 while pressing the Sensor selection button again maximum setting state will be achieved again the system default of maximum value is 8 while the required set temperature is achieved if buttons are not pressed within 5 seconds the set temperature will be stored in the system and the control temperature setting state will be quitted factory set temperature range is 2 9 The pre set temperature or average temperature of sensor in the refrigerator will be displayed in the digital window again no blinking Within 3 seconds upon the completion of temperature setting and in case that the control temperature setting state is not quitted while pressing the Calibration confirmation button for 10 seconds continuously the system will enter to the temperature range setting state SEH will be displayed firstly while pressing the Calibration cancellation or Sensor selection buttons within 4 seconds the current maximum temperature available to be set will be displayed and the maximum 16 temperature is set as 8 b
10. e sensor to be corrected The codes represent the following D1 upper temperature sensor D2 lower temperature sensor D3 control sensor D4 defrosting sensor D5 alarm sensor Press the Sensor selection button to select the sensor requiring correction Press the Calibration cancellation button to display the current value of the sensor to be corrected and press the Alarm test button to display the corrected value The original value is 0 Press the Calibration cancellation button to increase the corrected value of the sensor by 0 1 C each time Press the Sensor selection button to decrease the corrected value of the sensor by 0 12C each time The corrected value of the sensor is 2 C After the value of the temperature sensor is corrected the code of the currently calibrated sensor is displayed by pressing the Calibration confirmation button again or if no operation is carried out within 5s Press the Sensor selection button again to select another sensor whose value needs to be corrected The corrected value is saved automatically and the temperature display correction mode is quitted if no operation is carried out within 10s 3 13 Circuit requirements for charge batteries 1 The circuit for a charge battery is 8 V 12 V switchable The switching mode is to set a DIP switch on the main control panel An 8 V charge battery is used when the DIP switch is at the 8 V position and a 12 V charge batter
11. e conducted immediately the power light emitting tube ALARM on the panel will blink the average temperature of upper and lower sensors in the refrigerator will be displayed in the window of display screen for 1 minute and then the display will be stopped for 2 minutes display alternately in this way the alarm sound can be canceled by pressing the Buzzing cancellation button but the remote alarm function can not be removed 3 4 3Sensor failure alarm When one of upper sensor control sensor lower sensor and defrosting 3 5 sensor fails the alarm will be given In case of an alarm described in the above Articles 3 4 1 3 4 2 and 3 4 3 the buzzer will buzz continuously with a frequency of 1Hz while pressing the Buzzing cancellation button buzzing of current failure and the remote alarm state can be canceled in case of power failure at this time the Alarm cancellation button shall be pressed again If the alarm state still exists after 20 minutes the buzzing alarm and remote alarm will be sent again till pressing the Alarm cancellation button again Generating an alarm upon opening a door When the door is open for 600s or longer time the luminotron ALARM on the panel blinks and the buzzer continuously generates an alarm with 1 Hz 18 3 6 Generating an alarm by a remote relay a When the controller operates normally the remote alarm relay is powered on but does not generate an alarm There
12. e the door switch ea 4 The power panel is faulty Replace the power panel 3 The display panel The upper display sensor is open circuited Repair or replace the upper display displays E1 short circuited or damaged sensor 4 The display panel The lower display sensor is open circuited Repair or replace the lower display displays E2 short circuited or damaged sensor 5 The display panel The control sensor is open circuited short circuited Repair or replace the control display displays E3 or damaged sensor 6 The display panel The defrosting sensor open circuited displays E4 short circuited or damaged Repair or replace the defrosting sensor 1 The charge battery switch is off or faulty on or replace the switch on or on or replace the switch the switch 2 Confirm the boards on the computer are new Replace the charge battery 3 The display panel is old and there is power 7 The display panel displays E5 output from the battery connector on the control Replace the battery panel 4 The display panel is old and no power is output Replace the display panel with a new from the battery connector on the control panel computer board 1 The place for the refrigerator is not flat Change the place of the refrigerator 2 Resonance between pipelines or between the compressor and refrigerator cabinet occurs during operation of the compressor Handle the pipelines to av
13. ee nE PE FM Eric BEOS2ME1TOOB2D3 0005 Fa HYC 3860 1097 35 1114 1130 1 1146 3 1162 4 1178 8 1194 7 1211 8 1227 1243 1 m i m pi rp 0 BE F NE chou BE HN 360 Cooling Rate 41 9000 8000 TOOO 6000 5000 3000 2000 1000 ha 42 Haier Inspired living Haier Medical amp Laboratory Products Co Ltd Room 403D Brand Building Haier Industrial Park No 1 Haier Road Qingdao China Website www haiermedical com 43
14. eering plastic The plastic wiring terminal employs Molex four circuit connector 5557 04R and the model of internal wiring insert block is 5556T M4Q045 BD01 01 230V Current A 2 Condensate fan 11 Transportation and Installation Installation 1 Remove packing materials and packing strings Remove transport package materials and packing strings Install a rear panel support and open the refrigerator door for ventilation If the external face plate is dirty clean it with weak detergent and wash with water 2 Prepare a temperature sensor monitoring bottle Prior to the use of the refrigerator check that whether the temperature sensor monitoring bottle behind the drawer or shelf is filled with solution up to the scale mark of 200 if there is no solution or the solution is not added up to the scale mark of 200 refill the monitoring bottle including an upper monitoring bottle and an lower monitoring bottle with 10 glycerinum or other solution such as glycol as per the following steps 1 2 3 4 5 6 Take down the upper and bottom shelves and sensor fixing plate of the monitoring bottle Remove the sensor from the monitoring bottle Screw off two bolts for taking out the bottle Pour 10 glycerinum or other solution such as glycol into the monitoring bottle up to the scale mark of 200 Cover the monitoring bottle and fix it to the original position Connect the sensor to the m
15. efore delivery The maximum temperature can be increased by pressing the Calibration cancellation button again it can also be regulated by the Sensor selection button and the regulation value by the Sensor selection button is just opposite to that by the Calibration cancellation button the maximum temperature is 20 C at most and SEL at least after 4 seconds upon the completion of regulation the system will record the set temperature automatically and display SEL while pressing the Calibration cancellation or Sensor selection buttons within 4 seconds the current minimum temperature available to be set will be displayed and the minimum temperature is set as 2 before delivery The minimum temperature can be increased by pressing the Calibration cancellation button again it can also be regulated by the Sensor selection button and the regulation value by the Sensor selection button is just opposite to that by the Calibration cancellation button the minimum temperature is 5 at least and SEH at most after 4 seconds upon the completion of regulation the system will record the set temperature automatically and display AOF while pressing the Calibration cancellation or Sensor selection buttons within 4 seconds the current control temperature difference will be displayed and the control temperature difference is set as 0 5 before delivery The control temperature difference can
16. ers Displayed on the Display Panel Temperature for a high temperature alarm Temperature for a low temperature alarm Display of the temperature difference MEM M 23 Details of Main Replaceable Parts of HYC 360 Main control panel HXY 306 control panel 0074091548 Lightng lamp 0074090803 Induced draught fan 0074090698 Fa2 Condensate fan 0075030020A 24 Details of Main Replaceable Parts of HYC 260 1 Compressor Danfoss NL7 3MF 0070701306 s tampon os umm mue _ e Evaporator SC 260 evaporator 0070701374 u res O 25 Common Faults and Troubleshooting Measures Symptom Cause Analysis Troubleshooting Measure 1 A fuse is damaged Replace the fuse 2 The wiring connector in the engine room is the connector disconnected 3 The wire connections of the electric cabinet are Check and make wire connections in 1 The compressor fails not in place place to start up 4 The control panel is faulty Replace the control panel 5 The starter or thermal protector is damaged Rep ace slateron inerma protector 6 The compressor is faulty Replace the compressor 2 The temperature in 1 The internal fan is faulty Replace the fan the cabinet is uneven 2 The air duct is blocked Remove the obstacles The temperature in the upper and lower parts 3 The door switch is broken Replac
17. gerator Model HYC 260 Power Input 340W Rate Voltage 2201 50 Hz Energy consumpution 3 3kW h 24h Rate current 2 6A Climate Class N Effective Volume 260L Protection Class Foaming Cabinet 360 Haier Pharmaceutical Refrigerator Model HYC 360 Power input 430 W Rated current 3 5A Climate type N Toda Res C Haier Medical and Laboratory Products Co Ltd DEA Technical Parameters He 1 1 _ Forced air cooling circulation Outline dimensions width depth x 500 490 640 500 490 640 height mm Package dimensions width x depth x 522 622 690 522 622 690 height Circuit Diagram POWER PLUG blue yellow green D brown S blue blue power panel charge re COM on off a E gt NO brown 13 0 4 3 ES EE prob pens control PT prob alarm blue compressor ES start capacitante brown i E light starter white a E fluorescence laup 7 blue pitts Compressor Parameters under Standard Conditions 10 Fan Parameters under Standard Conditions 1 Induced draught fan FD YJF617B 525 induced draught fan lt 132 AC Current A 0 25 15 22100 Blade material White ABS engin
18. in too many high temperature goods at a time Note Do not store goods in the space between the bottom of liner and the bottom shelve so as to prevent from blocking the air duct and affecting the uniformity of temperature in the refrigerator 13 121 1 2 1 3 1 4 Specification of Control Panel HYC 260 HYC 360 Overall Design Requirements of Computer Board The control panel consists of a display panel a main control panel a power panel and an independent power supply Basic parameters power supply AC Rated voltage AC 220V 110V Rated frequency 50Hz 60Hz Rated power 6W Control current a control current of the compressor is not higher than 10A the starting current is not higher than 70A b control current for forced defrosting is not higher than c Remote power off alarm output relay d Buzzing alarm output e The control current of the fan is not higher than 5A Display 3 digit red digitron is used for display the display accuracy is 0 1 and the display range is from 9 9 C to 50 0 C Operating conditions a Temperature of operating environment from 10 to 40 0 C b Relative humidity lt 93 Temperature of storage environment from 30 to 60 0 C 14 2 Appearance 2 1 Appearance The main control panel display panel and power panel shall comply with corresponding drawings marks and letterings shall be complete and clear and the layout of
19. k for three times if the remote hardware alarm state is not achieved the remote 15 3 1 3 2 alarm relay will be disconnected after being connected for 3 seconds and operate based on the need of alarm this is normal alarm or the alarm is failed if the charge battery is turned off or the battery power is low for each press of the alarm test button besides the above function 5 will be displayed and blinked in the display window for three times each time for 3 seconds d Sensor selection Calibration cancellation buttons set temperatures press for at least 5 seconds e Temperature conversion Calibration cancellation buttons set temperatures of all sensors press for at least 5 seconds f Buzzing cancellation Alarm test buttons cancel revised values and restore to the factory set parameters Function Requirements Initial state The operating state of initial energization is the initial state the display temperature is the average temperature of upper and lower sensors the temperature gear is set as 4 and the compressor is controlled to start up or not based on the temperature Temperature regulation and control While pressing the Sensor selection and Calibration cancellation buttons for at least 5 seconds the original setting value will begin to blink and temperature setting state will be achieved afterwards the temperature value will be increased by 0 1 for e
20. o the power cable during dismantling the top cap and ensure that the fixing clip is tightened during installation 29 Step 2 Dismantle the cap plate to find the master control circuit board and the starter position Rotate the starter to dismantle or replace it as shown in the following figure Step 3 Find the position of the control panel which is secured by four snaps Slightly push the control panel by pressing its casing to dismantle it Note Do not forcibly remove the control panel to avoid damages to the control panel and the machine casing Step 4 Remove the cables which connect the machine to the control panel two power cables and one data cable Then dismantle the control panel 31 3 Installation and Removal of the Evaporator Fan Step 1 Remove all the shelf and storage baskets in the closet as well as fixed blocks on the shelf and then remove the screws indicated by the arrows Step 2 Remove the screws in the upper part of the fan baffle At this time support the fan by hand 32 to avoid damage Step 3 Slightly bend the fan baffle remove the power cable of the fan and then dismantle the fan and fan baffle 33 Step 4 Remove the screws at other positions of the backplane to see the evaporator 34 39 it oO E e ci 54 65 DL ARE AN LAS em C A AAA uw gt ne L M
21. oid resonance 8 The refrigerator generates a loud noise 3 The internal fan and fan support are loose 2 5 Eine e connecting bolts of the compressor are Tighten the connecting bolts 1 The refrigerant leaks seriously Check the leakage and refill refrigerant 9 The refrigerator is of poor refrigeration 2 The capillary tube or system is blocked al the capillary tube or replace the 4 Wir aCe Check and make wire connections in 10 No alarm is 1 Wire connections are not in p E Jaca generated 2 The control panel is faulty Replace the control panel 26 FAQs 1 The temperature in the refrigerator is higher or lower Answer The temperature in the refrigerator is related to the ambient temperature If it is higher or lower solve the problem by adjusting the control temperature See the instructions in the appendix for the specific method 2 The display temperature is different from the actually measured temperature Answer The display temperature indicates the surface temperature of the thermometry box It is equivalent to the surface temperature of the stored blood bag when the blood bank is in stable operation When the temperature measured by the thermometer indicates the air temperature inside the refrigerator at that time and it varies within a certain range it fails to correctly reflect the temperature of the blood bag at the time 3 Ponding occurs at the refrige
22. onitoring bottle directly and cover the sensor fixing plate again 3 Follow the following regulations for initial startup and continuous operation 1 2 3 4 5 Stand the refrigerator for 2h after it is put in place so as to ensure normal startup of the compressor Connect the refrigerator to a special power socket with power supply of 220V 60HZ and do not put goods into the refrigerator by this time When switching on the power for the first time turn on the battery switch The audible alarm may give out sounds This is normal Press the buzzer button to eliminate the alarm sound The audible alarm will operate continuously until the temperature of the sensor of temperature monitoring bottle reaches the range of 5 2 Make sure that the two monitoring bottles are filled with 10 glycol solution There is no need to set the temperature since the refrigerator is set to operate at 2 8 before delivery 12 6 The temperature of the refrigerator can reach the set temperature only after operation of several hours Once the temperature in the refrigerator is stable check that whether the temperature of the monitoring bottle is consistent with the speed of the set point 7 Turn on the lamp switch to ensure the normal operation of the lighting lamp the refrigerator 8 Upon completion of the overall check on refrigerator operation put goods into the refrigerator little by little but do not put
23. ore than 7h at this time the electrical heater is not in operation but the internal fan operates normally Start up the compressor while it is shut down for 5 minutes or any one of the upper or lower display temperatures is higher than 5 6 3 3 3While any one of the upper or lower display temperatures is lower than 2 5 C the compressor shall be forced to be shut down the defrosting heater strip is not electrified but the internal fan operates normally and the shutdown time shall not be less than 3 minutes 3 4 Buzzing alarm and light emitting tube ALARM blinking alarm 3 4 1 Temperature requirements of over temperature alarm maximum alarm temperature ALH send over temperature alarm when any one of the upper and lower display temperatures is higher than ALH for at least 2 minutes minimum alarm temperature ALL send over temperature alarm when any one of the upper and lower display temperatures is lower than ALL for at least 2 minutes While the display temperature meets the requirement namely the display temperature is nearly the same as the set temperature and the actual temperature in the refrigerator shall be the same as the display temperature 3 4 2Power failure alarm While the power supply AC220V 110V is disconnected the backup charge battery is switched to by the relay for supplying power to CPU While the power is off and the backup charge battery is used for supplying power to the computer board buzzing alarm will b
24. rator bottom after operation for a period Answer In the case of a little water wipe the refrigerator with a towel regularly In the case of much water check whether drainage pipes are blocked or impeded and clear them by using fine iron wires 4 The display temperature differs from the actual temperature when the refrigerator is powered on Answer The display temperature refers to the temperature of the thermometry box load whereas the actually measured temperature indicates the air temperature For this reason there is a certain deviation between them That is a normal situation 2 Structure Diagram of the Refrigeration System Evaporator Condenser US UJUHH Dry filter f Capillary tube Return pipe N Exhaust pipe Press oil 28 Installation and Removal of Key Parts Precautions for Removal and Installation a Pull out power plugs during removal and installation b Install parts in a reverse order of removing them Install all parts at the original positions of the product Installation and Removal of the Control Panel Step 1 Dismantle the set screws on the top cap as indicated by the arrows shown in the following figure Moreover loosen the fixing clip of the fixing clip to avoid damage t
25. the display panel is as shown in the following drawing Upper sensor temperature ua Power supply Pharmaceutical m mn temperature WM refrigerator A PHARMACEUTICAL REFRIGERATOR Buzzing Temperature Alarm test Calibration Sensor Calibration cancellation conversion confirmation selection cancellation Layout of the display panel Definitions of colors of indicator lamps are as follows Alarm indicator lamp Red Blinking At an alarm state Upper sensor temperature Lime Normally The digitron displays the upper sensor indicator lamp green temperature on Lower sensor temperature Lime Normally The digitron displays the lower sensor indicator lamp green on temperature n Normally At a power supply state of main power Power indicator lamp Supply Blinking At a failure state of main power supply Note If the maximum temperature indicator lamp is normally on at the same time the temperature displayed by the digitron is the average temperature of upper and lower sensors 2 2 Definitions of buttons a Buzzing cancellation button cancel buzzing in case of buzzing alarm b Temperature conversion button convert the display temperature of the digitron Alarm test button It is used for testing the alarm function For each press of the button the buzzer will ring for three times continuously with a frequency of 1Hz and the alarm indicator lamp will blin
26. thin adjacent 24 hours The compressor and fan stop when coercive defrosting is started 3 8 The fan delays after the coercive defrosting is stopped 3 9 The compressor starts up after coercive defrosting but the fan operates normally after three minutes Troubleshooting of the sensors When the sensor is open or short circuited the alarm lamp on the panel blinks 1 Hz and the buzzer generates an alarm a D C Open or short circuit of the upper temperature sensor display 1 Open or short circuit of the lower temperature sensor display E2 Open or short circuit of the control sensor display E3 19 d Open or short circuit of the defrosting sensor display Ed e When the control sensor is faulty the compressor operates and stops at intervals of 5 minutes 3 10 Control of the internal fan The internal fan stops when the door is open It normally operates when the door is closed 3 11 Rules for accessing the compressor and defrosting relay The three relays are accessed by turns according to the following order Each time two relays are used and one relay is for standby This order is cycled 3 12 Correction of the temperature display Hold the Temperature conversion and Calibration confirmation buttons for more than 10s to change to the temperature display correction state At this moment D1 Is displayed on the screen Then press the Sensor selection button to cyclically select th
27. y is used when the DIP switch is at the 12 V position 2 Charge mode a Use a 12 V recharge battery The voltage of the charge battery is detected when the blood refrigerator is powered on The charge battery is charged when the voltage is lower than 11 5 V with a charging voltage of 14 2 V The charging stops for 5 minutes in every 30 minutes to detect the battery voltage and the process is repeated if the detected voltage is lower than 13 2 V The charging stops until the voltage is higher than 13 2 V The battery is considered faulty if its voltage is still lower than 10 8 V after being charged for 100 hours Then the charging stops until the faulty battery is replaced with a new one By 20 3 14 default the battery is replaced when the refrigerator is powered on again b Use an 8 V recharge battery The voltage of the charge battery is detected when the blood refrigerator is powered on The charge battery is charged when the voltage is lower than 7 4 V The voltage at both ends of the battery is 9 5 V during charging charging stops for 5 minutes in every 30 minutes to detect the battery voltage and the process is repeated if the detected voltage is lower than 9 2 V The charging stops when the voltage is higher than 9 2 V The battery is considered faulty if its voltage is still lower than 6 5 V after being charged for 100 h The charging stops until the faulty battery is replaced with a new one c The circuit of a charge
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