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TROUBLESHOOTING

AND REPAIR MANUAL

TROUBLESHOOTING

AND REPAIR MANUAL

 TECNICA 140.1 - 142

“ r e p a r a t i o n    n o    p r o b l e m  ! ”

cod. 988401

inver ter

 TECNICA 1400-1600

CONTENTS

   

PAGE

OPERATION AND ELECTRICAL DIAGRAMS................... 2

- Block diagram

2

- Analysis of block diagram

3

- Illustrations 

5

- Electrical diagrams

6

REPAIR GUIDE.................................................................. 10

- Equipment required

10

- General repair instructions

11

- Troubleshooting and remedies

11

- Testing the machine

14

- Illustrations

16

SPARE PARTS LIST.......................................................... 17

REPAIR SHEET................................................................. 19

TROUBLESHOOTING

AND REPAIR MANUAL

TROUBLESHOOTING

AND REPAIR MANUAL

31/05/02

Summary of Contents for TECNICA 1400

Page 1: ...OPERATION AND ELECTRICAL DIAGRAMS 2 Block diagram 2 Analysis of block diagram 3 Illustrations 5 Electrical diagrams 6 REPAIR GUIDE 10 Equipment required 10 General repair instructions 11 Troubleshoot...

Page 2: ...ER SECONDARY DIODES INDUCTANCE SECONDARY EMC FILTER OUTPUT FAN POWER SUPPLY LED FLY BACK POWER SUPPLY DRIVER CURRENT READER ALARM LED MAX CURRENT ADJUSTMENT DUTY CYCLE MAKER ADDER ALARM BLOCK POTENTIO...

Page 3: ...ary and transmit the information to block 14 primary current reader TECNICA 1400 1600 Block 8 Power transformer Consisting of T3 Reduces the voltage converted by block 6 chopper adjusting voltage and...

Page 4: ...output electrode holder and earth cable connected to each other or electrode stuck to piece being welded Block 20 Maximum current adjustment Consisting of R32 R33 R42 Used to adjust the maximum weldin...

Page 5: ...12 FLY BACK TRANSFORMER 8 POWER TRANSFORMER 18 POTENTIOMETER 25 POWER SUPPLY LED 19 ALARM LED 15 DUTY CYCLE MAKER 22 GALVANIC SEPARATOR 10 INDUCTANCE 21 THERMOSTATIC CAPSULE ON POWER TRANSFORMER 11 SE...

Page 6: ...TECNICA 1400 1600 General wiring diagram TECNICA 1400 1600 6 WIRING DIAGRAM...

Page 7: ...TECNICA 1400 1600 Wiring diagram for power power supply control board 7...

Page 8: ...TECNICA 1400 1600 Wiring diagram for power power driver board IGBT IGBT 8...

Page 9: ...TECNICA 1400 1600 9 Wiring diagram for control board...

Page 10: ...INSTRUMENTS 1 Dual trace oscilloscope cod 802401 2 Static load generator cod 802110 3 Variac 0 300v 1500 VA cod 802402 4 Digital multimeter USEFUL INSTRUMENTS 5 Unsoldering station MISCELLANEOUS 6 Cu...

Page 11: ...d on disassembly and assembly stage for the various Make a visual check of components listed below for signs machine parts of burning or breakage G Take care to keep the small parts and other pieces t...

Page 12: ...heck the power wiring the fan starts up correctly for voltages close to the rated A The connection of the power supply cable to the power supply value 230Vac 15 the machine is not fastons at the main...

Page 13: ...WER BOARD figure 2A Amplitude tolerance 10 With the machine disconnected from the main supply Frequency 65KHz 10 disconnect all the wiring connected to the board Remove the current adjustment knob on...

Page 14: ...th the screws D Connect the voltage probe CH2 x 10 between PIN 9 of torque wrench setting for screws 1 Nm 20 strip J6 probe and the emitter Solder the terminals taking care not to let the solder run E...

Page 15: ...ent waveforms on the oscilloscope display resemble those in figure E Make sure the current value on the static load generator is 149A 3 with a voltage of 26V 5 NB Checking the secondary board diode vo...

Page 16: ...WER TRANSFORMER SECONDARY DIODES FAN BOTTOM IGBT DISSIPA TORS BOARD FASTENING SCREW FAN BUMP CONTACTS J5 J5 RHEOFORES Q2 RHEOFORES 14 BOARD FASTENING SCREW IGBT Q2 DISSIPATOR FASTENING SCREWS IGBT Q1...

Page 17: ...parts without any reference pls specify model brand and voltage of machine list reference number of the item registration number Wenn Sie einen Ersatzteil der ohne Artikel Nummer ist benoetigen bestim...

Page 18: ...4 25 Trasformatore Potenza Trasformateur Puissance Power Transformer Leistungstransformator Transformador De Potencia Pressacavo Presse Cable Cable Bushing Kabelhalter Prensa Cable Fibbia Per Cinghia...

Page 19: ...ply From mains without extension From mains with extension m Mechanichal stresses the machine has undergone to cription Des Dirty grade Dirty inside the machine Description Rectifier bridge Electrolyt...

Page 20: ...CERTIFIED QUALITY SYSTEM ISO 9001 TELWIN S p A Via della Tecnica 3 36030 VILLAVERLA Vicenza Italy Tel 39 0445 858811 Fax 39 0445 858800 858801 E mail telwin telwin com http www telwin com...

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