Link to Jeiotech IS_971 Engineering data … pdf
Contents
1. 54 2 1 16 Compressor unit Disassembly This shows compressor units 55 2 1 17 Transformer Disassembly The circled shows a transformer Disconnect all wires and loosen the circled blots to remove 56 2 1 18 Vibrating Frame Assembly Disassembly Loosen the circled by using 8mm Spanner 4mm Loosen the circled by using 4mm Wrench Vibrating Frame Assembly can be removed as Wrench shown 57 2 1 19 Belt Disassembly Refer to SI Disassembly Rotate Driving wheel system when lift up belt Assemble Hold belt and lift it up 1 Place belt at the motor 2 Place a part of belt at the driving wheel system and rotate it 58 2 1 20 Shaking Motor Disassembly Loose no head screw with 2mm Loose screws yellow circle with 4mm Loose screws with 4mm wrench h wrench Separate harness of motor Separate motor and motor bracket out of Separation done the body 59 2 1 21 Rotation Pin Set Disassembly Head of wrench screw through hole Loose screw with 4mm wrench Separation done can be seen when you rotate rotation rotating rotation Pin Set pin set 60 2 2 Inspection 2 2 1 Output voltage of Relay on Main Control Board TT Li p Reece 1 Press START key to operate unit 2 Measure output voltage of terminal with voltage meter DC MODE 61 2 2 2 Output voltage of Heater Main Control Boa2. 1 Check if there is mechanical crushing noise on the compressor Pa S gt If there is noise the refrigerant is too much filled 1 Set room temp on around 25 C set SV on 15 C wait 30mins to be stable running 2 Measure the refrigerant 3 Proper range Room temp 25 C SV 15 C 1 9 2 1 Bar 28 32 Psi x Refer to 2 2 11 Service valve connection and refrigerant pressure Release the overloaded refrigerant 2 1 1 Frame Cover disassembly Reference Solution 2 2 11 Service valve connection and refrigerant pressure reference 2 2 12 Filling refrigerant reference The assembly is reverse order of disjointing Noise while operation the unit Loosen compressor holding nuts 1 Check the noise is coming from compressor itself or not Check point 2 Check the holding nuts are loose Check point f they are loose tighten them by using spanner Solution 1 2 1 1 Frame Cover disassembly Reference 2 The assembly is reverse order of disjointing 3 Noise while operation the unit Noise from Fan interference 1 Open Bottom panel of the Chamber and check Check point gt Check Fan interference Reassemble the unit 1 2 1 7 Fan Cover disassembly Reference Solution 2 2 1 9 Motor Fan disassembly Reference 3 If the Fan is not damaged re assemble the fan 4 The assembly is reverse order of disjointing 1 If the motor generate noise the motor is error
3. Gauge Nut ee T e P CT RU um ri Kov juam i t XT Th f E QI CI 5 ET TO v am sa EP gt zw 1 i Prepare Manifold Gauge and close low Read instruction carefully Loose 14mm Gauge Nut and 20mm connect at low pressure of manifold pressure high pressure and line Note Must be acknowledged Main Nut C 1 Main nut 20mm wrench handle 4m 4 3 Gauge nut 14mm Open 4mm wrench screw Internal pressure indicates at manifold Service valve Clockwise Close Anti clockwise Open T 2 1 12 How to recharge refrigerant Incase pressure indicator is high Extract refrigerant because symptom is due to overcharge the Note Environmental temperature is nearly 25 to 30C 1 Connect low pressure hose to service valve 2 Set temperature at 25 C and run unit 3 Pressure indicator drops to low pressure immediately once compressor runs 4 When temperature reaches 25 C and wait until temperature stabilization for around 30minutes Separate hose of manifold gauge for refrigerant suction Middle of 3 hoses E 1 Check out pressure of Manifold Gauge Normal Ambient 25 30 C Bath temp 25 C SI 300R 600R 2 0kg cm 28 4psi SI 971R 971RF 1 5kg cm 21 3psi Open low pressure valve of manifold gauge and pressure indicator drops slowly with extract sound Note When you open low pressure valve of manifold gauge open about
4. Check point 2 Replace Panel on Display board gt If you still notice display error the Main control board is out of order Replace a new PCB 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing Display Display error Temp Sensor error 1 Replace a new Temp Sensor Check point gt If display is OK the previous Sensor is out of order Replace a new Temp Sensor 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 7 Fan Cover disassembly Reference 3 2 1 11 Temperature control Sensor disassembly Reference 5 The assembly is reverse order of disjointing 26 Classification Display Check point Solution Display error Temp sensor contact error 1 Check the bolts of Temp Sensor on the Main control board gt If you detect bolting is loose contact error Fasten the blots of Temp Sensor on the Main control board 1 2 1 1 Frame Cover disassembly Reference 2 Fasten the blots of Temp Sensor on the Main control board 3 The assembly is reverse order of disjointing 2T Classification Display Check point Solution 1 Disassemble the Harness on the Display board and re assemble correctly O ee gt If Display turns OK Harness contact was error m m J mom lan Replace Display board
5. HAZI 2008 3 24 Service Manual Model IS 971 971R 971RF JEO TECH Mole INDEX 1 Service 2 Disassembly amp Inspection 1 1 Temperature 2 1 Disassembly Temp doesn t increase 2 1 1 Frame Cover Disassembly Temp doesn t decrease 2 1 2 Shaking table Disassembly FUIS 2 1 3 Main board PCB Disassembly Variation Cause l 2 1 4 SSR Disassembly 2 1 5 Relay Disassembly 1 2 Power 2 1 6 Noise Filter Disassembly No Power Power shut off during operation Power shut off after turning on Temp keeps rising 2 1 7 Fan Cover Disassembly 2 1 8 Heater Disassembly 2 1 9 Motor Fan Disassembly 1 3 DISPLAY 2 1 10 Display PCB Disassembly Push button error 2 1 11 Temperature control Sensor Disassembly Display error 2 1 12 High Temp Limit Sensor Disassembly 1 4 Door 2 1 13 Door Disassembly Door can t close 2 1 14 Fuse Disassembly 1 5 Noise 2 1 15 Communication Board Disassembly Noise while operating the chamber 2 1 16 Compressor unit Disassembly Noise when SHAKING 2 1 17 Transformer Disassembly 1 6 Leakage 2 1 18 Vibrating Frame Assembly Disassembly Breaker actives 2 1 19 Belt Disassembly 1 7 RS communication 2 1 20 Shaking Motor Disassembly No connection 2 1 21 Rotation Pin Set Disassembly 1 8 SHAKING SHAKING Error SHAKING stops with ERR 2 2 Inspection 2 2 1 Main Board Relay output Power inspection 2 2 2 Main Board Heater output Power inspection 2 2 3
6. Saia 1 2 1 2 Shaking table disassembly Reference 2 2 1 18 Vibrating Frame Assembly disassembly Reference 3 The assembly is reverse order of disjointing 39 1 Check Harness contact Re assemble Harness re 1 2 1 2 Shaking table disassembly Reference 2 2 1 18 Vibrating Frame Assembly disassembly Reference Check harness after removing Shaking cover 3 The assembly is reverse order of disjointing SHAKING SHAKING error Belt got loosen or out of way 1 Check the motor works well Check point 2 Check Vibrating Frame works well gt If Motor is OK but Vibrating Frame is not working gt Belt got loosen or out of way Replace belt 1 2 1 2 Shaking table disassembly Reference Solution 2 2 1 18 Vibrating Frame Assembly disassembly Reference 3 2 1 19 Belt disassembly Reference 4 The assembly is reverse order of disjointing 40 1 Check the Motor works well Check point gt If not the motor is error Replace a new morot 1 2 1 2 Shaking table disassembly Reference Solution 2 2 1 18 Vibrating Frame Assembly disassembly Reference 3 2 1 20 Shaking Motor disassembly Reference 4 The assembly is reverse order of disjointing 1 Check if the display shows an error message ERR C Check point 2 Check the Motor works well gt If the display shows ERR C or the Motor does not work gt Harness contact error Re assemble Harnes
7. or Make the Refrigeration temp is down using of compressed Air 3 After operating the unit and then check the problems 4 Assembly is in reverse disassembly Temperature Temp doesn t decrease Refrigeration line Filter Dryer Capillary tube Chock 1 Operates the unit Check point 2 The low pressure Refrigerant gas indicates vacuum pressure gt Dryer chock Replace the Dryer Temperature Temp doesn t decrease Refrigeration fan motor malfunction 1 Operates the unit 2 Check whether the refrigeration part works Check point 3 If the refrigeration part works Check the input voltage of Fan motor using of the multi meter 4 If the pressure is normal the fan motor is malfunction l Replace the fan motor Solution l 1 2 1 7 Fan Cover disassembly Reference 2 2 1 9 Motor Fan disassembly Reference 3 Assembly is in reverse disassembly Temp doesn t decrease Condenser dust contamination Check point 1 Check dust on the condenser MEN Clean up the condenser Sen 1 Remove the Condenser cover panel on the bottom of the unit olution 2 Clean dust on the condenser 3 Assembly is in reverse disassembly Temperature Temp doesn t decrease Disconnection of a Refrigeration wire or terminal 1 Operates the unit Check point 2 Check the refrigeration works 3 Check a disconnection of terminal or Wire from the refrigeration M C to the refrigeration part Check the wire 1
8. 1 Refer to 2 1 10 Display PCB disassembly 2 Disassemble the Harness on the Display board and re assemble correctly 3 Assembly is reverse order of disjointing 28 1 4 Door 1 When opening the door completely the door should not be closed by Gas spring Check point Replace the Gas spring Solution 1 2 1 13 Door disassembly Reference 2 The assembly is reverse order of disjointing Not fixed Door hinge damage 1 Check the spring of hinge Check point gt f spring is separated It s a malfunction Replace the door hinge Solution 1 2 1 13 Door disassembly Reference 2 Assembly is in reverse disassembly 20 1 5 Noise 1 Check if Fan is interfered by something Check point gt If there is nothing to interfere Fan Motor is out of order Replace a new Fan 1 2 1 7 Fan Cover disassembly Reference Solution 2 2 1 9 Motor Fan disassembly Reference 3 The assembly is reverse order of disjointing Noise Noise while operation the unit Compressor error 1 Check if there is mechanical crushing noise on the compressor Check point gt If there is noise the compressor is out of order Replace compressor 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 16 Compressor unit disassembly Reference 3 The assembly is reverse order of disjointing 30 Noise while operation the unit Noise from overloaded compressor
9. 1 8 Heater disassembly Reference 3 The assembly is reverse order of disjointing Check heater resistance before assembly 34 Step 1 Check out fuses N E 4 y otep 2 Taking out motor wiring oF Step 3 Check out resistance between motor wire and surface of motor with resistance meter _ M p i gt If fuses are out of order or resistance measures current leakage happens N 3 Check point yl E NSE Replace a new motor 2 1 14 Fuse disassembly Reference 2 1 7 Fan Cover disassembly Reference Solution 2 1 9 Motor Fan disassembly Reference The assembly is reverse order of disjointing 35 Step 1 Taking out wiring of compressor av otep 2 Measure 3 different resistance of 3 wires between 2 ends gt If all 3 different resistance are measured current leakage happens Check point Replace compressor 1 2 1 1 Frame Cover disassembly Reference poration 2 2 1 16 Compressor unit disassembly Reference 3 The assembly is reverse order of disjointing circuit breaker activates Insulation of wire Step 1 Check out fuses Step 2 Replace fuses if it is out of order Check point Step 3 Measure resistance between main plug and earth resistance meter gt f resistance measures insulation of wire is out of order Replace wires Refer to wire snap examination 36 1 7 RS Communi
10. 2 1 1 Frame Cover disassembly Reference Solution 2 Change a wire in case of wire disconnection 3 Change a terminal in case of terminal disconnection 4 Assembly is in reverse disassembly 10 Temp trembling Wrong PID Value 1 Press Temp button with turning on the Main power switch at the same time Check point 2 Press Auto tuning Button to check the PID value gt If the unit PID value is different from a basis PID value It s error Operate the Auto tuning 1 Press Temp button to set the desired temp Solution 2 Press A T button for a second Auto Tune displayed on the temp display and A T LED ON 3 After pressing Start Button RUN LED is ON A T LED flickers and then operates the Auto Tune 4 Finishing Auto Tune LED is off The temp by Auto Tune keeps controlling temperature Temperature Temp trembling PCB Malfunction 1 Operate the Auto tuning Check point gt If the temp is trembling after Auto tuning It is PCB Malfunction Replace the PCB 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 3 Main board PCB disassembly Reference 3 Assembly is in reverse disassembly l Temp trembling Temp Sensor connection inferiority 1 Check the temp sensor terminal bolts of PCB gt If bolts are loosen it cause disconnection inferiority Check point Tighten the temp sensor terminal bolts of PCB 1 2 1 1 Frame Cover disassembly Referen
11. 5 sec only and close quickly and wait for Stabilization 2 3nunites Try above action several times until pressure indicator reaches proper value Incase low pressure lack of refrigerant Incase pressure indicator is low Separate hose of manifold gauge for Connect line blue circle to refrigerant 9 Open valve of tank blue circle to Refrigerant should be recharged due to refrigerant suction lack of refrigerant Middle of 3 hoses tank anti clockwise mE When you open low pressure Refrigerant will be filled with in valve of manifold gauge open the hose but air and refrigerant about 5 sec only and close is mixed in the hose l quickly and wait for Open valve blue circle at the l stabilization 2 3nunites left picture for short time to l l Try above action several times extracgt mixed air and close it IN until pressure indicator Open low pressure valve and reaches proper value refrigerant goes tO compressor Pressure indicator increases 73 Close valve of refrigerant tank after Separate refrigerant suction line Close wrench screw with 4mm wrench Done recharge refrigerant driver and close 4mm gauge Nut and 20mm Main Nut 74 How to insert refrigerant after vacuuming compressor 1 Open valve for low pressure of 2 Wait until gas is out completely 3 Prepare vacuum pump 4 Connect suction hose of manifold Manifold Gauge Low pressure Low pressure reaches 0 afte
12. Check point Replace the motor with a new one 1 2 1 2 Shaking table disassembly Reference Solution 2 2 1 18 Vibrating Frame Assembly disassembly Reference 3 2 1 20 Shaking Motor disassembly Reference 4 The assembly is reverse order of disjointing 32 Noise while SHAKING Noise coming from plate touching 1 Check if the noise is coming from plate touching while Shaking gt Plate is error Check point Replace Plate Te 1 2 1 2 Shaking table disassembly Reference 2 2 1 18 Vibrating Frame Assembly disassembly Reference 3 The assembly is reverse order of disjointing Classification Symptom Service Factor 1 Chekc if the bearing has gap by turning Rotation Pin Set Check point TAN gt If the bearing has gap the bearing is error Replace Rotation Pin Set 1 2 1 2 Shaking table disassembly Reference Solution 2 2 1 18 Vibrating Frame Assembly disassembly Reference 3 2 1 21 Rotation Pin Set disassembly Reference 4 The assembly is reverse order of disjointing 33 1 6 Current leakage Step 1 Check out fuses gt If fuses are out of order current leakage happens Step 2 Taking out wiring of heater Then measure resistance between terminal and surface of heater with resistance meter gt If resistance measures current leakage happens Check point Replace a new heater T 1 2 1 7 Fan Cover disassembly Reference 2 2
13. Transformer AC output Power inspection 2 2 4 Heater short circuit inspection 2 2 5 Heater leakage inspection 2 2 6 Motor leakage inspection 2 2 7 Noise Filter error inspection 2 2 8 Main Power Switch error inspection 2 2 9 SSR error inspection 2 2 10 Wire snaps inspection 2 2 11 Connect service valve and examine pressure of refrigerant 2 2 12 How to recharge refrigerant 2 2 13 Current leakage of compressor 1 Service 1 1 Temperature Temp doesn t increase Heater malfunction 1 After setting the Max temp and then press Start Button to operate the unit 2 Check the Heater temp itself Be careful heater is very hot Check point 3 Measure resistance checking positive terminal of heater using of the multi meter gt If resistance doesn t measure it is a malfunction Replace a heater 1 2 1 7 Fan Cover disassembly Reference Solution 2 2 1 8 Heater disassembly Reference 3 Assembly is in reverse disassembly Heater should be checked resistance for inferiority Temp doesn t increase Relay Malfunction 1 Press the Start Button to operate the unit Measure Voltage of Output terminal using of the multi M meter gt If Voltage doesn t measure it is a malfunction Check point Replace the Relay Soui 1 2 1 1 Frame Cover disassembly Reference olution 2 2 1 5 Relay disassembly Reference 3 Assembly is in reverse disassembly Temp doesn t increase SSR Malfu
14. ace the heater 1 2 1 7 Fan Cover disassembly Reference Solution 2 2 1 8 Heater disassembly Reference 3 The assembly is reverse order of disjointing Heater should be checked resistance for inferiority 22 Classification Power Check point Solution Classification Power Check point Power shut off after turning on Motor leakage 1 Check the fuse x BEEN 7 2 Separate the motor wires 3 Measure Resistance both the motor wire and motor exterior f motor resistance is measured Motor leakage Replace the motor 1 2 1 7 Fan Cover disassembly Reference 2 2 1 9 Motor Fan disassembly Reference 3 The assembly is reverse order of disjointing Power shut off after turning on Refrigeration System Leakage 1 Separate the Refrigeration System wires TET 2 Measure Resistance for two terminals each in three times using of the multi meter i gt If Resistance is measured in three cases Refrigeration System Leakage 23 Replace the Refrigeration System 1 2 1 7 Fan Cover disassembly Reference Seton 2 2 1 16 Refrigeration Unit disassembly Reference 3 The assembly is reverse order of disjointing Power shut off during operation Wiring insulation malfunction 1 Check the fuse 2 If fuse is down replace it Check point 3 Check Resistance both ground wire and Main plug using of the multi meter gt f resistance i
15. cation 1 Check out connection of wires of Communication PCB 2 Replace communication PCB Check point gt If it works after replacement communication PCB is out of order Replace communication asian 1 2 1 10 Display PCB disassembly Reference 2 2 1 15 Communication Board disassembly Reference 3 The assembly is reverse order of disjointing 37 1 8 SHAKING SHAKING SHAKING error Main PCB error 1 Replace a new Main Board PCB Check point gt If the unit works OK PCB was error Replace PCB 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing 1 If the motor generate noise the motor is error Check point Replace shaking motor 1 2 1 2 Shaking table disassembly Reference Solution 2 2 1 18 Vibrating Frame Assembly disassembly Reference 3 2 1 20 Shaking Motor disassembly Reference 4 The assembly is reverse order of disjointing 38 SHAKING SHAKING error PAN SPRING error 1 Check PAN SPRING is broken Check point Replace Pan Spring 1 2 1 2 Shaking table disassembly Reference Solution 2 2 1 18 Vibrating Frame Assembly disassembly Reference 3 Replace Pan Spring 4 The assembly is reverse order of disjointing SHAKING SHAKING error VIBRATING FRAME damaged 1 Check VIBRATING FRAME has been damaged Replace a new VIBRATING FRAME
16. ce Solution 2 Tighten the temp sensor terminal bolts of PCB 3 The assembly is reverse order of disjointing Temp trembling Refrigeration malfunction Endothermic value fluctuation 1 Operates the unit 2 Set the temp 25 C and keep the temp Check point 3 Check the low pressure of refrigeration when the temp trembles If the low pressure of refrigeration trembles together the refrigeration part is malfunction 2 1 Replace the PCB to check the situation Check point TC gt If Variation is not caused it is PCB Malfunction Replace the PCB 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing Temperature Variation Cause BIAS Value modification Bhedeoeini 1 Measure temp of the inner chamber using of A exterior temp detector installed in the middle eck poin i gt If displayed temp and the temp detector value are different Modify BIAS Value BIAS Value Modification 1 Install A exterior temp detector verified inner chamber 2 After setting the temp value Wait for the temp that is stabilized About 2hours over Solution 3 Measure the temp detector installed inner chamber 4 Press Temp Button six times to modify the Bias value 5 Modify the BIAS value to set the temp is equal to the temp detector And then press the ENTER Button to restore the value 6 Modify the temp
17. er of disjointing 1 Check the electricity of socket with multi meter Check point l l l gt If power doesn t measure or value is lower or higher Laboratory power Malfunction Make Power of Laboratory stabilization 1 Check between Fuse holder and Soldering part of power code line Check point l l HD gt If Soldering part is separated disconnection inferiority Sold again S 1 2 1 1 Frame Cover disassembly Reference 2 After soldering between Main cord and fuse holder Tube it with Shirking tube 3 The assembly is reverse order of disjointing amp 8 1 2 2 10 Wiring short circuit Inspection Reference gt If resistance is not measured it is short circuit Check point 2 Check the end terminal of wire gt If wire connection is not good disconnection Malfunction Check the wire 1 2 1 1 Frame Cover disassembly Reference Solution 2 If it s short circuit replace the wire 3 If it s disconnection reassemble the terminal 4 The assembly is reverse order of disjointing 19 Power shut off during operation PCB Malfunction 1 Turn on the Main power Switch 2 Set the SV value 100 C Press the Start Button to operate 3 Check DC Voltage from heater output terminal in PCB gt If Voltage is not measured PCB Malfunction 4 Check DC Voltage from Relay output terminal in PCB 2 f Voltage is not measured PCB Malfunction 5 Check DC Voltage from Ref
18. lts Red circle Loosen the displayed fixed bolts Fan Cover Disassembly completion Red circle 47 2 1 8 Heater Disassembly Loosen fixing bolts on the circled to disconnect After disconnecting wires on the heater pull out to the Heater Disassembly done Heater Ass y rear direction 48 2 1 9 Motor Fan Disassembly Vivian NANN a EApihhshhhh AARET i int trebiidsaasasanaunenenennnensesr APEERE nee Liga imita TS 13315 AMAA nl Loosen the bolts on the circle Loosen the bolts on the circle to remove fixing panel and High Temp Limit Sensor dE DELLLLLLLLLLLLLTITTIEPTTITTITIT IE TEE Pull up to disassemble 2 1 10 Display PCB Disassembly MEEPL EE tite waa Ll AT orte Mit y s M j i TF D phi el um mum ma wm mer T a Dn eee The circled is Temperature control Sensor Loosen the circled bolts Disassembly done B 2 1 12 High Temp Limit Sensor Disassembly Loosen the circled bolts Loosen the circled bolts to disconnect 5 2 1 13 Door Disassembly e j LN wy k Remove gas spring and close door You can find door hinge on the rear Put driver on the hinge 5 Turn driver to the arrow direction to disconnect Loosen bolts hinge cover 53 2 1 14 Fuse Disassembly driver to remove fuse Loosen the circled bolts Disconnect panel Loosen the circled bolt to remover Communication board
19. mend that press Strat Stop key when about 50g is inserted into compressor B Set temperature 25 C Insert speed is getting fast once unit operates 15 Check out quantity of charged gas 16 Check out pressure of manifold gauge Quantity of refrigerant SI 300R 600R 160g 5g R 134a SI 971R 971RF 540gx15g R 134a 17 Disconnect service valve and refrigerant tank and close service valve Refer to No 11 12 13 of b how to recharge refrigerant Long nose nipper screw driver M8 vox screw driver M7 box screw driver 13mm spanner 14mm spanner slip joint plier locking plier 4mm Wrench Spanner 2 2 13 Current leakage of compressor Measure resistance between input terminal and surface of compressor with resistance meter 7 amp
20. nction 1 Set the SV value higher than PV Press the Start Button 2 Check the HEAT LED is lightning on Display No Flickering Lightning 3 Check Terminal Resistance using of the Multi meter Resistance MODE gt If resistance doesn t measure it is a malfunction Check point Replace the SSR 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 4 SSR disassembly Reference 3 Assembly is in reverse disassembly Temp doesn t increase PCB Malfunction 1 Set the SV value higher than PV Press the Start Button 2 Check the HEAT LED is lightning on Display No Flickering Lightning 3 Check Terminal Resistance using of the Multi meter DC MODE gt If resistance doesn t measure it is a malfunction Check point Replace the PCB 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 3 Main board PCB disassembly Reference 3 Assembly is in reverse disassembly Classification Temperature Check point Solution Temp doesn t increase Wire from heating parts disconnection 1 Check the wire from Heater to SSR 2 Wire disconnection Inspection Reference r T E di aT p E j at Nomi z ar m r lem i x mw Ty gt f resistance is not measured it is disconnection 3 Check the end terminal connection of the wire gt If connection is not good it is disconnection If itis disconnection replace the wire 1 2 1 1 Frame C
21. over disassembly Reference 2 Replace the wire 3 Assembly is in reverse disassembly Temp doesn t increase Refrigerant shortage Set the Ambient temp 25 C to operate Set the SV 15 and then wait for temp stabilization over 30minutes after reaching SV Measure Refrigerant capacity 3 Normal range Room temp 25 C Chamber temp 15 C Check point 1 9 2 1 Bar 28 32 Psi XX 2 2 11 Service valve connection or Refrigerant pressure inspection Reference Fill up Refrigerant gas 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 2 12 How to fill up Refrigerant gas Reference 3 Assembly is in reverse disassembly Temp doesn t increase Refrigeration System Malfunction 1 The unit operates 2 Check whether the refrigeration System Is noisy or not Check point gt If it s noisy the refrigeration System is malfunction 3 Check the refrigeration voltage and current leakage Replace the refrigeration System 1 2 1 7 Fan Cover disassembly Reference moulon 2 2 1 16 Refrigeration System back panel disassembly Reference 3 Assembly is in reverse disassembly Temp doesn t increase Refrigeration System Overload 1 Check the temp of Refrigeration head Check point 2 Over 95 C Refrigeration part Overload Cool down the Refrigeration system 1 2 1 7 Fan Cover disassembly Reference Solution 2 Waiting for the refrigeration System is cool
22. r gauge to vacuum pump decreases with a gas extraction complete gas extraction 5 Operate vacuum pump Low 6 Leave it for over 30minutes 7 Close low pressure valve 8 Disconnect suction hose from vacuum pressure drops rapidly once vacuum Pressure reaches vacuum status after manifold Gauge pump A some kind of suction sound hears pump works 30 minutes when disconnecting Normal 75 B Check point for proper refrigerant recharge B Note Y Eliminate factors which can Y Refrigerant will be filled with in affect weight of connection the hose but air and refrigerant between manifold gause and is mixed in the hose l service valve Open valve blue circle at the left Connection status of picture for short time to extracgt l l refrigerant manifold gauge 9 Connect suction hose of manifold 10 Open suction hose which is mixed air and close it and service valve gauge to refrigerant tank and open connected mid of manifold gauge Step 10 must be done valve of tank slightly and close it B A sound flows through hose into compressor B Pressure increases Insert speed is getting slow compared with first insertion 11 Place refrigerant tank on balance Set balance at zero 13 Open low pressure valve of manifold Notel If possible digital balance is gauge recommended with zero point setting Degree 0 0009 76 14 Switch ON and press Start Stop key B Recom
23. rd 1 Set temperature above PV actual value and press START key 2 Check out HEAT LED on display It should be ON 3 Measure output voltage of terminal with voltage meter DC MODE 62 2 2 3 AC output power of Transformer 1 Switch ON Switch ON 2 Measure output power blue wires 35V with voltage meter AC mode Measure output power red wires 13 7V I with voltage meter AC mode 63 2 2 4 Short circuit of Heater Measure two heater contact by using TESTER resistance MODE 64 2 2 5 Heater leakage Measure resistance resistance MODE between Heater and heater body 65 2 2 6 Motor leakage check Measure resistance between motor and terminal of input power 66 2 2 Noise Filter defect 1 Switch ON 2 Measure output voltage with voltage meter AC MODE 67 2 2 8 Main Power Switch defect 1 Switch ON 2 Measure output voltage with voltage meter AC MODE 68 2 2 9 SSR Board defect 1 Take out harness of SSR input 2 Measure resistance of SSR output with resistance meter 69 2 2 10 Wire snap 1 Resistance meter Measure between plug and output 2 Measure resistance between of Noise Filter plug and fuse holder Measure between plug and Relay Measure between plug and input voltage AC of Main Board PC B 70 2 11 Connect service valve and examine pressure of refrigerant
24. rigeration system output Heater Check point terminal in PCB f Voltage is not measured PCB Malfunction Replace the PCB 1 2 1 1 Frame Cover disassembly Reference oolution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing Compressor 20 1 Check the fuse and then replace tt 2 Check an electric current both ground terminal and Wire using of the multi meter Check the polar terminal of Wiring Check point 3 Check Heater leakage gt 1 If fuse is down replace it If heater is not leakage and 2 If current Ground terminal and wire doesn t apply current during measurement It s Over current Over current is possible but check shot circuit for all wires and electric parts Power Power shut off during operation Electric capacity over in Multi outlet 1 Check an electric outlet capacity connected the unit Check point 2 Check total units connected the multi electric outlet gt f total units connected the multi electric outlet is over than the outlet capacity multi electric outlet malfunction Use the multi electric outlet under capacity 2 Power shut off after turning on Heater leakage 1 Check the fuse 2 Separate the heater terminal and wire 3 Measure Resistance both the heater terminal and heater exterior gt If fuse is down and heater resistance is measured Heater leakage Check point Repl
25. s 1 2 1 2 Shaking table disassembly Reference Solution 2 2 1 18 Vibrating Frame Assembly disassembly Reference Check harness after removing the rear cover 3 The assembly is reverse order of disjointing 4 2 Disassembly amp Inspection 2 1 Disassembly 2 1 1 Frame Cover Disassembly Loosen displayed bolts using of Driver Separate the back Disassembly Completion side panel 42 2 1 2 Shaking table Disassembly Loosen bolts 4mm hexagon Wrench Remove Washer Disassembly completion 43 2 1 3 Main board PCB Disassembly a 3 e mm Displayed part is a Main board PCB yellow circle After removing electric wires Loosen the displayed bolts to disassembly yellow circle 44 2 1 4 SSR Disassembly LJ he FE i ay e Nie AER iIi u j 7 a T E E t M Le T m 1i i After removing electric wires Loosen the displayed bolts to disassembly yellow circle CL ssi DEA k 2 4 2 Displayed part is a Relay yellow circle After removing electric wires Loosen the displayed bolts to disassembly yellow circle 2 1 6 Noise Filter Disassembly DASTEX Ca Lid ED BIFTEK a L m aj TT Ted l n cm Ju k Displayed part is a Noise Filter yellow circle After removing electric wires Loosen the displayed bolts to disassembly yellow circle 46 Loosen the displayed fixed bo
26. s measured it is short circuit Replace the wire Wiring short circuit Inspection Reference Power shut off after turning on Electric capacity over in Multi outlet 1 Check the fuse 2 Check an electric outlet capacity connected the unit Check point 3 Check total units connected the multi electric outlet gt f total units connected the multi electric outlet is over than the outlet capacity multi electric outlet malfunction Use the multi electric outlet under capacity 94 1 3 DISPLAY Display Push button error DISPLAY PCB error gt If you don t detect any reaction from button the Display board is out of order Replace the Display board Solution 1 Refer to 2 1 10 Display board disassembly oA 2 The assembly is reverse order of disjointinging Display Push button error DISPLAY PCB assembly error Check point Replace Display board oolution 1 Refer to 2 1 10 Display board disassembly 2 The assembly is reverse order of disjointinging Display Display error DISPLAY PCB error 1 Disassemble the Harness on the Display board and re assemble correctly gt If you still notice display error the Display board is out of order Replace DISPLAY PCB Solution 1 Refer to 2 1 10 Display PCB disassembly 2 he assembly is reverse order of disjointinging 25 Display Display error Main PCB error 1 Disassemble the Harness on the Display board and re assemble correctly
27. sembly Reference 3 The assembly is reverse order of disjointing 15 1 2 Power 1 Check the Fuse using of the multi meter Check point gt f Resistance is not measured Fuse disconnection Replace the Fuse Solution 1 2 1 14 Fuse disassembly Reference 2 The assembly is reverse order of disjointing 1 Measure output terminals No 2 5 When turning on the Main power gt If Power is not measured Switch Malfunction Check point Replace the Switch 1 2 1 10 Display PCB disassembly Reference Solution 2 Separate Switch wiring When assembling location is a caution 3 Pull out the parts which are involved in the Switch upper amp bottom from the panel 4 The assembly is reverse order of disjointing 16 1 Check Voltage from output terminal of AC in PCB gt If Voltage is measured without Power PCB Malfunction Check point Power Blue 35V Red 13 7V Replace the PCB 1 2 1 1 Frame Cover disassembly Reference olution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing 1 Check Voltage from output terminal of AC in PCB gt If Voltage is measured without Power PCB Malfunction Check point Power Blue 35V Red 13 7V Replace the Trans oolution 1 2 1 1 Frame Cover disassembly Reference 2 2 1 17 Trans disassembly Reference 3 The assembly is reverse ord
28. value 3 1 Check the temp detector position Check point o gt If the temp detector is not in the middle position It s a malfunction Measuring position change Solution 1 The sensor of temp detector positioned in the middle of inner chamber 2 Fixture and the sensor of temp detector should be intervals minimum 15mm Standard Test Guide Reference Classification Symptom Service Factor 1 Check the temp sensor terminal bolts of PCB gt If bolts are loosen it cause disconnection inferiority Check point Tighten the temp sensor terminal bolts of PCB 1 2 1 1 Frame Cover disassembly Reference Solution 2 Tighten the temp sensor terminal bolts of PCB 3 The assembly is reverse order of disjointing 14 Temp keeps rising PCB Malfunction 1 Replace the PCB to check the symptom Check point IM u gt If Variation is not caused it is PCB Malfunction Replace the PCB 1 2 1 1 Frame Cover disassembly Reference oolution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing Temperature Temp keeps rising SSR Malfunction 1 Separate the Input SSR of Harness 2 Measure resistance checking SSR output using of the multi meter Resistance MODE gt If resistance measure it is SSR malfunction Check point Replace the SSR 1 2 1 1 Frame Cover disassembly Reference Solution 2 2 1 4 SSR disas
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