Service Manual - Wolf Laboratories
Contents
1. 4 Assembly is in reverse disassembly 1 Check Voltage from output terminal of AC in PCB gt If Voltage is measured without Power PCB Malfunction Check point Replace the PCB 1 2 1 1 Side Cover panel disassembly Reference 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing 1 Check the electricity of socket with multi meter Solution Check point gt If power doesn t measure or value is lower or higher Laboratory power Malfunction Make Power of Laboratory stabilization Replace the relay Saini 1 2 1 1 Side Cover panel disassembly Reference olution 2 After soldering between Main cord and fuse holder Tube it with Shirking tube 3 The assembly is reverse order of disjointing ction 1 2 2 9 Wiring short circuit Inspection Reference a cm Tm gt If resistance is not measured it is short circuit 2 Check the end terminal of wire gt If wire connection is not good disconnection Malfunction rey Benes Check point hm PR Ca it s short circuit replace the wire 1 2 1 1 Side Cover panel disassembly Reference Solution 2 Replace the wire 3 The assembly is reverse order of disjointing Power shut off during operation PCB Malfunction e 1 Tum on the Main power Switch 2 Set the SV value 100 C Press the Start Button to operate das m 3 Check DC Voltage fro2. Heater disassembly ae Taa WA eee ty yn Loosen and remove fixing port on Loosen and remove the fixing bolt When replacing Heater it is not the right and left on the rear recommended to _ disassemble Chamber Jacket and Chamber because this procedure is quite complicate The circled is Display PCB Loosen the circled bolts 2 1 10 Temperature control Sensor disassembly The circled is Temperature control Sensor Loosen the circled bolt and remove bottom Shelf Loosen the circled bolt to remove Temp Loosen nut on the Reducer remove out to Sensor Block the arrow direction 2 1 11 High Temp Limit Sensor disassembly The circled is Sensor wire Pull out to the arrow direction 2 1 12 Keeper disassembly Loosen the fixing bolts 2 1 14 Communication Board disassembly be r R ahah Disconnect hamess Loosen bolts by using 5mm vox wrench Refer to OF disassembly 39 2 2 Inspection 2 2 1 Output voltage of Relay on Main Control Board 1 Press START key to operate unit 2 Measure output voltage of terminal with voltage meter DC MODE 40 2 2 2 Output voltage of Heater on Main Control Board eli E eg a ai LJ ait pg Winhiyai H Eei e o i Hy et We rei j d EEI f dado ae RF k Ra epi TF a Piro ei y RR BE ad aE ET a Fue E i a y a 1 Set temperature above PV actual value and press START key 2 Check
3. The assembly is reverse order of disjointing E O Display Display error 1 Replace a new Temp Sensor Check point gt If display is OK the previous Sensor is out of order Replace a temp sensor ih 1 2 1 1 Side Cover panel disassembly Reference olution 2 2 1 10 Temperature control Sensor disassembly Reference 3 The assembly is reverse order of disjointing Display Display error Temp sensor contact error 1 Check the bolts of Temp Sensor on the Main control board te O e MN E gt If you detect bolting is loose contact error Check point Fasten the bolts of Temp Sensor on the Main control board Saui 1 2 1 1 Side Cover panel disassembly Reference olution 2 Fasten the blots of Temp Sensor on the Main control board 3 The assembly is reverse order of disjointing 20 Display Display error 1 Disassemble the Harness on the Display board and re assemble correctly gt If Display turns OK Harness contact was error Check point Replace DISPLAY PCB 1 Refer to 2 1 1 Side Cover panel disassembly Solution 2 Disconnect Harness and reassemble 3 The assembly is reverse order of disjointing a As 1 4 Door Door Not closed Keeper damage 1 After dismantling the keeper and then check it Check point 2 1 12 Keeper disassembly Reference Solution 2 The assembly is reverse order of disjointing a AD a 1
4. of disjointing Solution o a Classification Vacuum Check point Solution Vacuum is leaking Inner chamber has crack 1 With reference of How to check leaking point find the leaking point gt i meme intra Replace the inner chamber This job is hard to be performed at site 29 2 Disassembly amp Inspection 2 1 Disassembly 2 1 1 Side Cover panel disassembly P Lefaaaar Loosen the circled blots by Disconnect hamess on the side Disassembly has been done using driver 30 2 1 2 Door packing disassembly Pull out the packing to the arrow When reassembling be careful of way the packing direction o 3j 2 1 3 Main board PCB disassembly be n frita A Loosen fixing bolt by using driver Loosen fixing bolt by using driver x Waming carefully connect Temperature sensor 2 1 4 SSR disassembly Disconnect wires on SSR Loosen blots by using Disconnect SSR driver 2 1 5 Relay disassembly Disconnect the circled Loosen blots by using driver 2 1 6 Noise Filter disassembly Disconnect the bolts by using 7mm vox driver Loosen blots by using driver BA o 2 1 7 3 way valve disassembly F CUUM VEN L VEN g uum e Remove handle Loosen the circled bolts Loosen the circled valve fixing nut Loosen the circled nut to the arrow way 2 1 8
5. 0000 2008 3 31 3000 Service Manual Model OV 11 12 amp SEIO TECH HOL amp INDEX l Service 1 1 Temperature Temp doesn t increase Temp trembling Variation Cause Temp keeps rising 1 2 Power No Power Power shut off during operation Power shut off after tuming on 1 3 DISPLAY Push button error Display error 1 4 Door Can t close door 1 5 Current leakage Current breaker active 1 6 Communication Can t connect l 7 Vacuum How to check vacuum leaking point Can t get vacuum status Vacuum leakage 2 Disassembly and Inspection 2 1 Disassembly 2 1 1 Side Cover panel disassembly 2 1 2 Door packing disassembly 2 1 3 Main board PCB disassembly 2 1 4 SSR disassembly 2 1 5 Relay disassembly 2 1 6 Noise Filter disassembly 2 1 7 3 way valve disassembly 2 1 8 Heater disassembly 2 1 9 Display PCB disassembly 2 1 10 Temperature control Sensor disassembly 2 1 11 High Temp Limit Sensor disassembly 2 1 12 Keeper disassembly 2 1 13 Communication Board disassembly 2 2 Inspection 2 2 1 Main Board Relay output Inspection 2 2 2 Main Board Heater output Inspection 2 2 3 Main Board AC input Power Inspection 2 2 4 Heater short circuit Inspection 2 2 5 Heater leakage Inspection 2 2 6 Noise Filter error Inspection 2 2 7 Main Power Switch error Inspection 2 2 8 SSR er
6. 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 Install A exterior temp detector verified inner chamber After setting the temp value Wait for the temp that is stabilized About 2hours over Solution Measure the temp detector installed inner chamber Press Temp Button six times to modify the Bias value Modify the BIAS value to set the temp is equal to the temp detector And then press the ENTER Button to restore the value Modify the temp value 1 Check the temp detector position Check point 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 Temp trembling Temp Sensor connection infenority 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 Side Cover panel disassembly Reference Solution 2 Tighten the temp sensor terminal bolts of PCB 3 The assembly is reverse order of disjointing Temp keeps rising PCB Malfunction 1 Replace the PCB to check the sy
7. 2 1 1 Display Panel disassembly Solution 2 Refer to 2 1 9 Display PCB disassembly 3 The assembly is reverse order of disjointing Display Push buttons error Assembly error on Display board 1 Check Display board is installed firmly sean 2 Disconnect Display board from the panel test pushing all buttons one by one eck poin gt If all buttons works good while there is some space on installing the Display board this means assembly error Replace the Display board 1 Refer to 2 1 1 Display Panel disassembly Solution 2 Refer to 2 1 9 Display PCB disassembly 3 The assembly is reverse order of disjointing 18 Display Display error DISPLAY PCB error 1 Disassemble the Harness on the Display board and re assemble correctly Check point un gt If you still notice display error the Display board is out of order Replace the Display board 1 Refer to 2 1 1 Display Panel disassembly Solution 2 Refer to 2 1 9 Display PCB disassembly 3 The assembly is reverse order of disjointing Display Display error Main PCB error 1 Disassemble the Harness on the Display board and re assemble correctly Check point 2 Replace a new Display Panel gt gt If you still notice display error the Main PCB is out of order Replace main PCB 1 Refer to 2 1 1 Side Cover panel disassembly Solution 2 Refer to 2 1 3 Main board PCB disassembly 3
8. 5 Current leakage Circuit breaker activates Heater leakage 1 Check fuse status first 2 Disconnect wiring on Heater contacts Check point 3 Measure resistance value on Heater surface and contact by using TESTER gt If fuse blow and any resistance is measured the heater is leaking Replace heater 1 2 1 8 Heater disassembly Reference Solution When replacing Heater Do not disassemble Chamber J acket and Chamber 2 The assembly is reverse order of disjointing Be sure to check Heater resistance before finishing 1 Check FUSE first 2 If Fuse blows replace with a new one Check point 3 Measure resistance on Main plug and Ground gt If any resistance is measure the wire insulation is error Solution Replace wire connection Refer to 2 2 9 DB x 1 6 Communication Classification Symptom Service Factor Communication Communication error Communication Board error 1 Replace Communication Board Check point are ee gt After replacing if it works the communication board is error Replace communication PCB 1 2 1 1 Side Cover panel disassembly Reference Solution 2 2 1 13 Communication Board disassembly Reference 3 The assembly is reverse order of disjointing 2 DA 1 6 Vacuum Classification Symptom How to check the leaking point Easily error parts 1 Check and replace Door packing with vacuum status 2 Check if Vent V
9. alve fixing bolt is loosen if loosens easily 3 Check Reducer s NUT on Temperature Controlling Check point If you still find any faulty on the above parts 1 Fill water in the chamber by 1 cm 2 Let the chamber vacuum status 3 Tum the chamber left nght and up down to find air leaking 4 If Chamber is OK but pipes are leaking replace the leaking pipe 2 DB a 1 With reference of How to check leaking point find the leaking point 2 Check if there is dirty on the side of packing 3 Check if the packing has any damage gt Remove the dirty and replace the damaged packing Check point Replace a new packing Solution 1 2 1 2 Door packing disassembly Reference 2 The assembly is reverse order of disjointing Unit can t have vacuum status Vacuum line is stock 1 With reference of How to check leaking point find the leaking point 2 Open vacuum line and blow checking with compressor air gt If you can t remove the line stock replace a new one Check point Solution Replace vacuum line 26 1 2 1 7 3 way valve disassembly Reference 2 2 1 10 Temperature Sensor controller disassembly Reference 3 The assembly is reverse order of disjointing Vacuum Unit can t have vacuum status Door closing error 1 Check if there is dirty on the side of packing Check point 2 Check if Door is twisted gt Check Door closing Solution Locate Door po
10. asure it is a malfunction Check point Replace the SSR 1 2 1 1 Side Cover panel disassembly Reference Solution 2 2 1 4 SSR disassembly Reference 3 The assembly is reverse order of disjointing 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 Side Cover panel disassembly Reference 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing Solution Temp doesn t increase Wire from heating parts disconnection 1 Check the wire from Heater to SSR 2 2 2 9 Wiring disconnection Reference Check point gt If 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 Side Cover panel disassembly Reference Solution 2 Replace the wire 3 The assembly is reverse order of disjointing Temp trembling Wrong PID Value 1 Press Temp button with tuming 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 fr
11. k point gt If fuse is down and heater resistance is measured Heater leakage Replace the heater ini 1 2 1 8 Heater disassembly Reference olution When replacing a Heater Inner Chamber J acket Chamber Disassembly are very complicated Do not replace the heater in the field 2 The assembly is reverse order of disjointing Heater should be checked resistance for inferiority 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 If resistance is measured it is Wiring insulation malfunction Replace the wire 2 2 9 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 If total units connected the multi electric outlet is over than the outlet capacity multi electric outlet malfunction Use the multi electric outlet under capacity 1 3 DISPLAY Display Push buttons error DISPLAY PCB error 1 Disconnect Display board from the panel test pushing all buttons one by one Check point gt If you don t detect any reaction from button the Display board is out of order Replace the Display board 1 Refer to
12. m heater output terminal in PCB Check point gt If Voltage is not measured PCB Malfunction 4 Check DC Voltage from Relay output terminal in PCB gt If Voltage is not measured PCB Malfunction Replace the PCB 1 2 1 1 Side Cover panel disassembly Reference Solution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing 1 Check the fuse and then replace it 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 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 If total units connected the multi electric outlet is over than the outlet capacity multi electric outlet malfunction Use the multi electric outlet under capacity Classification Symptom Service Factor Power shut off after tuming on Heater leakage 1 Check the fuse 2 Separate the heater terminal and wire 3 Measure Resistance both the heater terminal and heater exterior Chec
13. mptom Check point o gt If Vanation is not caused it is PCB Malfunction Replace the PCB 1 2 1 1 Side Cover panel disassembly Reference Solution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing Temp keeps rising SSR Malfunction 1 Separate the Input SSR of Hamess 2 Measure resistance checking SSR output using of the multi meter Resistance MODE jr i o gt If resistance measure it is SSR malfunction Check point Replace the SSR 1 2 1 1 Side Cover panel disassembly Reference Solution 2 2 1 4 SSR disassembly Reference 3 The assembly is reverse order of disjointing Er Bd quado pe ye he s 1 2 Power 1 Check the Fuse using of the multi meter Check point gt If Resistance is not measured Fuse disconnection Replace the Fuse Solution 1 Reference 2 The assembly is reverse order of disjointing Classification Symptom Service Factor Replace the Fuse Replace the Fuse 1 Measure output terminals No 2 5 When tuming on the Main power gt If Power is not measured Switch Malfunction Check point Replace the Switch 1 2 1 1 Side Cover panel 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
14. om 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 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 Side Cover panel disassembly Reference 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing Solution Temp trembling Temp Sensor connection inferiority 1 Check the temp sensor terminal bolts of PCB gt If bolts are loosening it causes disconnection inferionty Check point Tighten the temp sensor terminal bolts of PCB 1 2 1 1 Side Cover panel disassembly Reference Solution 2 Tighten the temp sensor terminal bolts of PCB 3 The assembly is reverse order of disjointing 1 Replace the PCB to check the situation Check point o gt If Vanation is not caused it is PCB Malfunction Replace the PCB 1 2 1 1 Side Cover panel disassembly Reference Solution 2 2 1 3 Main board PCB disassembly Reference 3 The assembly is reverse order of disjointing Ne EE
15. out HEAT LED on display It should be ON 3 Measure output voltage of terminal with voltage meter DC MODE 4 2 2 3 AC input voltage of Main Control Board 1 Switch ON 2 Measure AC input voltage with voltage meter AC MODE 42 2 2 4 Short circuit of Heater Measure resistance of heater with resistance meter 43 2 2 5 Current leakage of Heater Measure resistance with resistance meter 44 2 2 6 Noise Filter defect 1 Switch ON m Q O O L oD O O Be o gt Ss O E o gt mD O ab v a Al 45 2 2 Main Power Switch defect 1 Switch ON 2 Measure output voltage with voltage meter AC MODE 46 2 2 8 SSR Board defect 1 Take out harness of SSR input 2 Measure resistance of SSR output with resistance meter 2 2 9 Wire snap Measure between plug and Input Measure between plug and output of Noise filter of Noise Filter Measure between plug and Relay Measure between plug and input voltage AC of Main Board PC B
16. ror Inspection 2 2 9 Wire snaps Inspection 1 Service 1 1 Temperature Temp doesn t increase Heater Malfunction 1 After setting 100 C 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 Salih 1 2 1 8 Heater disassembly Reference olution When replacing a Heater Inner Chamber J acket Chamber Disassembly are very complicated Do not replace the heater in the field 2 The assembly is reverse order of disjointing Heater should be checked resistance for inferiority Temp doesn t increase Relay Malfunction 1 1 Press the Start Button to operate the unit Measure Voltage of Output terminal using of the mA i multi meter gt If Voltage doesn t measure it is a malfunction Check point Solution Replace the Relay 1 2 1 1 Side Cover panel disassembly Reference 2 2 1 5 Relay disassembly Reference 3 The assembly is reverse order of disjointing Temp doesn t increase SSR Malfunction 1 Set the SV value higher than PV Press the Start Button Eq 2 Check the HEAT LED is lightning on Display No Flickering Lightning e 3 Check Terminal Resistance using of the Multi meter Resistance MODE gt If resistance doesn t me
17. sition correctly Classification Symptom Service Factor 1 With reference of How to check leaking point find the leaking point 2 Check if there is dirty on the side of packing 3 Check if the packing has been damaged gt Remove the dirty and replace the damaged packing Check point Replace a new packing Solution 1 2 1 2 Door packing disassembly Reference 2 The assembly is reverse order of disjointing 27 a 1 With reference of How to check leaking point find the leaking point Check point T gt If 3 way valve fixing nut is loosened fasten them Replace a new 3 way valve Soliton 1 2 1 1 Side Cover panel disassembly Reference 2 2 1 7 3 way valve disassembly Reference 3 The assembly is reverse order of disjointing Vacuum Is leaking Vacuum Pipe has crack Check point 1 With reference of How to check leaking point find the leaking point Replace vacuum pipe Saio 1 2 1 7 3 way valve disassembly Reference 2 2 1 10 Temperature control Sensor disassembly Reference 3 The assembly is reverse order of disjointing Vacuum is leaking Fitting has been loosened on vacuum pipe 1 With reference of How to check leaking point find the leaking point Fasten the loosened fitting 1 2 1 7 3 way valve disassembly Reference 2 2 1 10 Temperature control Sensor disassembly Reference 3 The assembly is reverse order
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