mg122-1 servisní manuál service manual alfin 171 w
Contents
1. The Hall Effect is damaged The Hall Effect must be replace Gas comes out but the Pre gas settings are not correct Regulate pre gas settings machine doesn t weld Otherwise reset the parameters and reset the machine picture 9 The machine can t stop The slope up and slope down are not cor Regulate in the correct way the slopes welding or the welding ectly set current is not the one Otherwise reset the parameters and reset the machine picture 9 set Ultima modifica Last Modify 03 11 2010 Rev1 pagina 14 di 19 PICTURE 1 PICTURE 2 170 T 170W 171T 171W DINSE socket Thermal protec tion device Transil Ultima modifica Last Modify 03 11 2010 Rev1 Position of the connector in which they are inserted thermal protection device yellow wires position 3 6 Short circuit black wire position 2 5 DINSE position 1 4 Check the continuity of contact of the thermal protection de vice with the diode tester with the heat sink tool temperature less than 40 C To check diodes remove the snubber board and carry out the following measures with a diode tester rte Genera Probe measure Cw we uo ow S om we em At the ends of the two transils see below positioned on the snubber board OL must always be measured pagina 15 di 19 170 T 170W 171T 171W PICTURE 3 Varistor PICTURE 5 PICTURE 4 Ultima modifica Last Modify 03 112. 011 0000 0115 Kryt horni A171W Upper cover A171W 1 041 004 0300 Hallova sonda Alfin Hall Sensor Alfin 1 Drzak vnitrni 012 003 0000 160 200 Inner Support 160 200 2 DA E um 044 003 0002 A160 200 Coil Start HF A160 200 1 Deska ochranna Protection Plate 1 011 0003 0003 A171W A171W 1 UN AND TN 012 003 0150 Alfin160 200T Alfin160 200T 1 PE E ad 711P001204 70 panel samice Panel Socket 2 EN CUBES ual 3475 1 4 komple 1 4 komple 1 7 AEN 011 003 0001 Alfin160 200 Alfin160 200 1 12 2379 krytka podl Cover Washer 1 O auno rame nar 050 001 0013 A160T 200T PCB Filter A160T 200T 1 eam Lomi tre _ 044 004 0001 Alfin160 200 Choke Alfin160 200 1 042 003 0005 Trafo Alfin160 Transformer Alfin160 1 015 0001 0005 Chladic A171W Heat Sink A171W 1 Usm r vystupni 032 002 0255 Alfin Rectifier Outlet Alfin 2 m AE NN 9 050 001 0012 A160E 200E A160E 200E 1 UR EE EN O 040 003 1070 Alfin160 200 Alfin160 200 1 TN _ 050 001 0009 160 200 160 200 1 1 050 R01 0009 A160T 200T REPAS A160T 200T REPAIR 1 032 001 3506 Alfin160 Rectifier Inlet Alfin160 1 N N N N N Co ALFA IN a s SERVISN TECHNICK DOKUMENTACE MG122 1 SERVISN MANUAL SERVICE MANUAL ALFIN 171 W MAX Panel zadni 23 012 003 0100 A160 200 Back Panel A160 200 045 000 0001 V v
3. SERVICE MANUAL ALFIN 171 W MAX page 8 Pro kontrolu tranzistor zm rte tyto podle n sleduj c tabulky testerem diod cerveny cerny hodnota S D 1 350 Hodnoty jsou orienta n Nam te li zkrat nebo rozpojen obvod OL je nutn PCB vym nit Varistor je bl zko vstupu nap jec ho nap t na silovou PCB Toto za zen slou k ochran PCB p ed vstupn m p ep t m P i p ep t exploduje a zkratuje vstup Je li rozsah zkratu velmi vysok obvod se p eru ALFA IN a s SERVISN TECHNICK DOKUMENTACE MG122 1 SERVISN MANUAL SERVICE MANUAL ALFIN 171 W MAX page 9 Pro kontrolu tranzistor zm rte podle n sleduj c tabulky testerem diod D S OL S D gt 350 _ Hodnoty jsou orienta n Namerite li zkrat nebo rozpojen obvod OL je nutn PCB vym nit Digit ln multimetr OL ozna uje p eru en obvod ALFA IN a s SERVISN TECHNICK DOKUMENTACE MG122 1 SERVISN MANUAL SERVICE MANUAL ALFIN 171 W MAX page 10 Zkontrolujte testerem diod pr chodnost mezi body A B na silov PCB a pin X Y na propojce k PCB d c ALFA IN a s SERVISN TECHNICK DOKUMENTACE 170 T 170W 171T 171W CAUTION Before carrying out any work on the machine make sure it is off and the plug has been dis connected PROBLEM CASE SOLUTION The machine does not Electrical power does not reach the ma Make sure the line
4. switches are closed the switch on chine protection devices fuses have not been enabled and that the power supply cable is intact Switch the machine off and disconnect the Voltage reaches the machine switch but plug Make sure that when the switch is there is no voltage after the contacts closed there is continuity between the contact input and output and that the varis tor is not broken In case the Power Board must be replaced picture 5 There is voltage after the disconnecting Switch the machine off and disconnect the switch but the machine does not go on plug Check the mosfet of the switching power supply unit on the power board picture 6 The protection devices Damaged power supply cable with short Switch off the machine and disconnect the of the line set off when circuited wires plug Make sure that there are no short the switch is activated circuits between the poles of the plug caused by a damaged power supply cable and the machine does Inverter is damaged Switch off the machine disconnect the not go on plug and check varistors picture 5 inverter picture 4 nput bridge rectifier picture 3 switching power supply unit picture 6 If one of these components is damaged replace the power board 0008 Ultima modifica Last Modify 03 11 2010 Rev1 pagina 11 di 19 170 T 170W 171T 171W PROBLEM CASE SOLUTION The front panel does not switch on The MMA TIG output voltage i
5. 2010 Rev1 Input bridge rectifier To check the Input bridge rectifier carry out the following measurements with a diode tester Probe Fasion Probe Mesum Le m 5 wa E m n ee mc 5 r mc o gt Should there be a short circuit on one of these measurements the input bridge rectifier must be replaced To check the inverter carry out the following measurements with a diode tester Red Probe Black Probe Should there be a short circuit on one of these measurements or an OL instead of a numeric value the power board must be replaced The varistor is a blue disc near the ground wire of the power board This device is for protecting the board from input overvoltage When there is overvoltage it explodes causing a short circuit most of the times If the extent of the short circuit is very high they become an open circuit pagina 16 di 19 170 T 170W 171T 171W To check the mosfet of the switching power supply unit carry the following measurements with a diode tester Red Probe Black Probe Measure Lo fo co s p gt B 5 Los o oe Lo e fo Should there be a short circuit on one of these measurements or an OL instead of a numeric value the power board must be replaced Tester or digital millimetre OL means Open Loop M Lu nc gt Ultima modifica Last Modify 03 11 2010 Rev1 pag
6. MG122 1 SERVISN MANUAL SERVICE MANUAL ALFIN 171 W MAX page 1 SERVISN MANUAL ALFIN 171 W MAX 1 VAROVANI UPOZORN N Pouze osoba spl uj c kvalifikaci danou z konem je opr vn na opravovat stroj P ED OTEV EN M KRYTU STROJE JEJ ODPOJTE VYTA EN M S OV VIDLICE ZE S T Ka d 4 m s ce otev ete stroj a jemn ho vyfoukejte stla en m such m vzduchem POZOR NEPOU VEJTE STLA EN VZDUCH O P LI VYSOK M TLAKU ABY NEDO LO K MECHANICK MU PO KOZEN ELEKTROSOU STEK Ka d 4 m s ce zkontrolujte dn stav sva ovac ch kabel a s ov ch kabel Nen povolena dn modifikace sva ovac ho stroje Pro Va i bezpe nost je nutn pose kat se sund n m krytu ze stroje po odpojen ze s t po dobu minim ln 5 minut kdy klesne nap t na kondenz torech na hodnotu pod 36 V ALFA IN a s SERVICE MANUAL ALFIN 171 W MAX NOTE Only trained personnel are permitted to work inside the machine BEFORE OPENING THE MACHINE CUT OFF ITS ELECTRICAL POWER BY REMOVING THE PLUG FROM THE MAINS SUPPLY SOCKET Every six months open the machine and clean it inside using compressed dehumidified air CAUTION DO NOT USE COMPRESSED AIR AT TOO HIGH A PRESSURE YOU COULD DAMAGE THE ELECTRONIC COMPONENTS With the same frequency check the welding cables and the supply cables No modification of any type may be made to the welding machine For safety while maint
7. aining the machine please shut off the supply power and wait for 5 minutes until capacity voltage already drops to safe voltage 36V SERVISN TECHNICK DOKUMENTACE page 2 MG122 1 SERVISNI MANUAL SERVICE MANUAL ALFIN 171 W O lt lt am e LLI O C lt tc O LLI BLOKOVE SCHEMA 2 6000 L000 0S0 4350148 3SVHd 3 19NIS ASVAONOW V 3 LNOd MDV la OW M NMOJE 7 JANOJAVW 35NV3O OIONVNY YOLDANNOD HOYOL VIDYOL AYOLLANNOD MOV TE OUAN X Z A389 01945 0L00 L000 0S0 LNO 3 ATWLNOUYS OTI3NNVd FLAT 10V MDV 18 OYIN qaq OSSOd NMO I8 ANOVA NMO I8 3NOSNV IN RN N33H9 MOTI3A 3QNH3A OTIVIS NMO I8 3NONH3V IA NMOJE 3NOMN3V IA H2LIMS SNIVIA 3NHOLLOSS31NI Ama ALIHM OONVIG 8000 L000 0S0 LATOIA V IOIA lt NMO8 3NOHHVIN cL00 L000 0S0 JNOJAVH MDV la 100 L000 0S0 LATOIA V IOIA MIV 18 MDV la OYIN z z SERVISN TECHNICKA DOKUMENTACE ALFA IN a s MG122 1 SERVISN MANUAL SERVICE MANUAL ALFIN 171 W MAX page 3 3 NAHRADNI D LY SPARE PARTS ALFA IN a s SERVISN TECHNICK DOKUMENTACE MG122 1 SERVISN MANUAL SERVICE MANUAL ALFIN 171 W MAX page 4 2 madlo 1 011 0006 0031 A171W Holder A171W 1
8. ease the welding current require greater power than the one supplied by the line When welding the pro tection devices of the line set off The remote control Make sure the wiring which goes to the Insert the wires into the connectors cor doesn t work front panel board 0010 is connected to rectly and insert the connectors into their the 6 pin connector housings Should this not be sufficient re Make sure that the 2 pin connector is place the front panel board or the power correctly connected to the power board board 0008 Check the continuity of the remote con The damaged cable must be replaced trol cable The torch potentiometer could be dam The potentiometer must be replaced aged The amphenol connector is damaged or Connect the amphenol connector or re disconnected place it The machine does not The front panel could be damaged Replace the front panel board first verify strike in HF mode that the spare part has the right software The HF board could be damaged The HF board must be replaced HF board cable could be damaged or Connect the cables or if damaged replace disconnected them The HF transformer is damaged The HF transformer could be damaged in case it must be replaced Gas does not come out Excessive gas pressure Remove the gas connection Carry out a from solenoid valve gas test on the front panel in the TIG pro cedure and check opening of the solenoid valve Reduce gas
9. ina 17 di 19 170 T 170W 171T 171W Check continuity with a diode tester between points A B of BI the power board and x y poles of the connector that goes to the front panel Lu oO gt In order to reset the parameters switch the machine on while the 3 and S5 buttons are being pressed e Lu a ad gt Ultima modifica Last Modify 03 11 2010 Rev1 pagina 18 di 19 ___ a gt 0 0 0 000000 SERVISN MANU L ALFIN 171 W MAX SERVICE MANUAL ALFIN 171 W MAX Vypracoval P ezkoumal Schv lil 2 S s Approved DJ 7 11 2011
10. odka Alfin Outlet Alfin 29 045 002 0001 Alfin 140ET 140ET La armas enr mme 26 017 001 5512 0 2 7 0 2 7 PSPPPPNL CIE 2 040 001 0010 170 180 200 HF25 160 170 180 200 HF25 28 013 0005 0000 OFF A171W A171W 003 002 0001 Ventil tor Alfin Fan Alfin Drz k ventil toru 30 1011 003 0002 160 200 Fan Holder 160 200 page 5 1 1 1 1 1 1 ALFA IN a s O SERVISN TECHNICK DOKUMENTACE MG122 1 SERVISN MANUAL SERVICE MANUAL ALFIN 171 W MAX page 6 4 KONTROLA SILOV PCB CHECKING THE POWER PCB d B oun Pozice kontakt v konektoru e teplotn idlo lut draty pozice 3 6 Zkontrolujte spojen kontakt tepeln ochrany pomoc testeru diod teplota chladi e nesm b t vy ne 40 C ALFA IN a s SERVISN TECHNICK DOKUMENTACE MG122 1 SERVISN MANUAL SERVICE MANUAL ALFIN 171 W MAX page 7 Pred kontrolou vystupn ch usm r ova odpojte v vody k PCB RC filtr Cerne a hn dy drat DOWN DOWN Nakonec zkontrolujeme dva transily na PCB RC filtr V obou sm rech musi vyk zat p eru en obvod Vstupn usm r ova na silov desce Pro kontrolu m stku zm te tento podle n sleduj c tabulky testerem diod erven ern Nam e vodi vodi n hodnota F D OL D F gt 0 450 D F OL F D 50 450 ALFA IN a s O SERVISN TECHNICK DOKUMENTACE MG122 1 SERVISN MANUAL
11. pressure Restore con nections and carry out a gas test Damage solenoid valve wiring Switch off the machine and disconnect the plug Check the continuity of the solenoid valve cable there s no continuity try to repair the damaged cables Check that the connectors are correctly inserted The solenoid valve control relay on the The front panel must be replaced front panel is damaged Feeding is missing Check continuity between points A B of the power board and x y poles of the connec tor that goes to the front panel After that the solenoid valve or the front panel must be replaced picture 8 solenoid valve is damaged Should the operations carried out not have a positive outcome replace the solenoid valve Ultima modifica Last Modify 03 11 2010 Rev1 pagina 13 di 19 170 T 170W 171T 171W PROBLEM CASE SOLUTION The torch button does The torch could be damaged The Torch must be replaced n t work There is no continuity between the Single out the interruption and replace the amphenol connector and the front panel wiring The front panel or the HF board are The damaged boards must be replaced damaged The machine always Switch off the machine and disconnect the welds at maximum cur plug rant The front panel is damaged 2 Replace the front panel board first verify that the spare part has the right software The Power Board is damaged The Power Board must be replace
12. refore the power board must be replaced Switch off the machine disconnect the plug and check the mosfet of the switching power supply unit on the power board IF it s damaged it must be replaced picture 6 Switch off the machine and disconnect the plug Make sure that the wiring contact is cor rectly inserted in the connector picture 1 Check for continuity between the output outlets and that the 6 path con nector is connected to the front panel picture 1 The power board must be replaced If one of the protection devices is always opened it is defective it must be accordingly replaced If itis closed make sure the two terminals are well inserted in the connector picture 1 ower board feed problems it must be accordingly replaced Switch off the machine and disconnect the plug Remove the snubber board check with a diode tester the status of the transil on the snubber board picture 2 check with a diode tester the status of the diodes picture 2 check the status of the power board picture 4 The Power Transformer must be replace pagina 12 di 19 170 T 170W 171T 171W PROBLEM CASE SOLUTION The welding is non opti Spattering occurs during welding Make sure welding polarity is correct the mal earth clamp is fixed correctly and check the hot start and arc force values that have to be decreased if they are too high Make sure the welding current does not Decr
13. s about 14V and the machine does not weld The output voltage in each procedure is about 14V and enabling of the thermal protection de vice The output voltage in MMA is zero The fan works but the front panel does not go on Both the fan and the front panel do not Work The output voltage wiring of the front panel is interrupted picture 1 The primary current alarm on the power board is activated Wait a few minutes keeping the machine on to favour cooling of the inverter If the ma chine continues running with the protection devices on switch the machine off and dis connect the plug Remove the hood and make sure the temperature of the heat sink tool is less than 40 If itis less than 40 check whether the thermal protective device contacts are normally closed owitch the machine off and disconnect the plug Check for a short circuit at the DINSE plug with a diode tester A short circuit may be caused by damaged transil on the snubber board damaged diodes damaged inverter The inductive value of the Power Trans former is null Ultima modifica Last Modify 03 11 2010 Rev1 Switch off the machine and disconnect the plug Make sure the flat cable that con nects the front panel to the power board is inserted correctly If correctly inserted re place the front panel If the front panel does not go on one of the switching power supply unit outputs is broken The
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