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Summary of Contents for BOC Smootharc TIG 185 DC
- Page 1 TIG 185 DC Service manual...
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Page 2: Recommended Safety Precautions
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 Ver.1 Rev.1 . 1013 Recommended Safety Precautions Electrical Shock Avoid electric shock by: • N ever touch ‘live’ electrical parts. • W earing dry insulated boots. • A lways repair or replace worn or damaged parts. • W earing dry leather gloves. -
Page 3: Table Of Contents
1.11 U8 pulse control module board circuit diagram 1.12 Second rectifier board schematic 1.13 Second rectifier board circuit diagram 1.14 Filtering, high frequency board circuit diagram 2.0 Troubleshooting and maintenance 3.0 Exploded view and component parts list Exploded view Component parts list for Smootharc TIG 185 DC... -
Page 4: Fundamental Schematic And Circuit Diagrams
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 1.0 F undamental schematic and circuit diagrams General wiring diagram... -
Page 5: First Rectifier Board Schematic
Ver.1 Rev.1 . 0314 BOC Smootharc TIG 185 DC Service manual First rectifier board schematic Ser. No. Pin Description Ser. No. Pin Description CON1 Under gas delay, the output is 24V when TIG CON10 DC24V works This port connect to the over-heat indicator Control works the signal, output the high CON11 GND frequency when TIG Connect to the power indicator, this pin is high GND voltage DC24V CON12 CON2 Pin 1 and Pin 2 is short frequency when TIG... -
Page 6: First Rectifier Board Circuit Diagram
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 First rectifier board circuit diagram... -
Page 7: Aux. Module Board Schematic
Ver.1 Rev.1 . 0314 BOC Smootharc TIG 185 DC Service manual Aux. module board schematic Description Connect to the MOS “S” DC24V turn on/off DC24V Start GND DC24V and Shut off GND Output DC24V Aux. module board circuit diagram... -
Page 8: U10 Drive Module Board Schematic
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 U10 drive module board schematic Description MOS output U10 drive module board circuit diagram... -
Page 9: U9 Control Module Board Schematic
Ver.1 Rev.1 . 0314 BOC Smootharc TIG 185 DC Service manual U9 control module board schematic Description DC+12V GND Not used Voltage Feedback 2T/4T Preset Control Given Control Not used Not used GND GND Over-current Protection Monitoring GND Over-heat Protection Monitoring GND DC+24V Not used GND SG3525 Shutdown Control GND GND DC+24V GND SPWM Output... -
Page 10: U9 Control Module Board Circuit Diagram
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 U9 control module board circuit diagram... -
Page 11: U8 Pulse Control Module Schematic
Ver.1 Rev.1 . 0314 BOC Smootharc TIG 185 DC Service manual 1.10 U8 pulse control module schematic Description DC+12V MMA/TIG Meter control DC+24V Not used Gas Delay Control Not used (MMA)Supply voltage of current adjustment Not used SG3525 Shutdown Control Not used (TIG)Supply voltage of current adjustment Not used Attenuation time adjustment terminal Not used Frequency switch terminal Not used Frequency switch terminal Not used Control Signal Not used Attenuation time adjustment terminal GND... -
Page 12: U8 Pulse Control Module Board Circuit Diagram
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 1.11 U8 pulse control module board circuit diagram... -
Page 13: Second Rectifier Board Schematic
Ver.1 Rev.1 . 0314 BOC Smootharc TIG 185 DC Service manual 1.12 Second rectifier board schematic Positive Main Transformer High Frequency MMA/TIG Output Feedback Rectifier Negative Output Ser. No. Description CON3 Given control Voltage feedback 1.13 Second rectifier board circuit diagram... -
Page 14: Filtering, High Frequency Board Circuit Diagram
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 1.14 Filtering, high frequency board circuit diagram... - Page 15 Ver.1 Rev.1 . 0314 BOC Smootharc TIG 185 DC Service manual Ser. No. Description CON1 Fixed gas delay time (2.5S) when press the switch Pin 2 is 24V voltage on the Q3 is 10V, Q3 open K1 cling, the gas starts to flow CON2 When press the switch, the voltage is 12V; When the switch is shut off, the voltage is 0V Connect to the ground DC+24V CON3 switch Press the switch, Pin1 and Pin3 is 12V; When the switch is shut off, Pin1 and Pin3 is 0V, Pin2 is NC. Delay time start relay When there is 24V relay shuts off Solenoid valve relay When the voltage Q3 is over 3V, Q3 is open, the relay cling, the gas flows. Resistance After continuous switching on and off, the resistance is over-heat and shuts off, the machine could work normally only after the resistance cools down for a few minutes High frequency relay Under TIG, press the switch, there is no-load voltage, Q5 is open, the relay K3 cling, high frequency initiates, and starts arc. CON4 Rise voltage, start arc by Under TIG, press the switch, there is no-load voltage, Q5 is open, the relay K3 cling, high frequency initiates, high frequency and starts arc.
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Page 16: Troubleshooting And Maintenance
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 2.0 T roubleshooting and maintenance Problem Possible Reasons Solution 1 P ress the power switch, 1 C heck the circuit is normal, and external power supply (AC240) is OK. 1 C heck the external power power indicator, meter, and supply. 2 C heck the power cable, switch, and connector is tightly connected, use a multi-meter fans with no data, press the to test the plug (PZ01-005-O1 CON10) for DC340V±5V. 2 C heck the connector. -
Page 17: Exploded View And Component Parts List
BOC Smootharc TIG 185 DC Service manual Ver.1 Rev.1 . 0314 3.0 Exploded view and component parts list Exploded view... -
Page 18: Component Parts List For Smootharc Tig 185 Dc
Ver.1 Rev.1 . 0314 BOC Smootharc TIG 185 DC Service manual 3.2 Component parts list for Smootharc TIG 185 DC Item Description Material Part No. BOC Part No. BOC rear panel plastic R-16-910220-01-A0 R-16-910220-01-A0 Left cover plastic R-17-995299-02-A0 R-17-995299-02-A0 Right cover plastic R-17-996299-02-A0 R-17-996299-02-A0 BOC bottom case R-18-261880-01-A0 R-18-261880-01-A0... - Page 19 970–988 Great South Road, Penrose, Auckland, New Zealand © BOC Limited 2014. BOC is a trading name of BOC Limited, a Member of The Linde Group. Reproduction without permission is strictly prohibited. Details given in this document are believed to be correct at the time of printing. Whilst proper care has been taken in the preparation, no liability for injury or damage resulting from its improper use can be accepted.
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