Thermal Arc PRO-WAVE 300 TSW Page 97 Service Manual Download

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PRO-WAVE 300TSW

August 10, 2005

8-25

8.20 Replacing Cooling Fan/Gas Solenoid Driver circuit components on PCB2 (WK-

4983)

Cooling Fan/Gas Solenoid Driver Kit Part Number : 710029

Contains the following: 1 x Transistor (Q20) Cooling Fan.

1 x Transistor (Q21) Cooling Fan

1 x Opto coupler (PHC4) Cooling Fan.

1 x Transistor (Q5) Gas Solenoid

1 x Opto coupler (PHC3) Gas Solenoid.

Remove faulty components by carefully removing all solder using a de-soldering tool. Solder in replacement components
as supplied with kit. Cover replaced components with an electrical grade varnish.

Q20

PHC3

PHC4

Q21

Art # A-05600

Figure 8-26: WK-4983 Cooling Fan and Gas Solenoid Driver Components.

Summary of Contents for PRO-WAVE 300 TSW

Page 1: ...AC DC CC INVERTER ARC WELDER PRO WAVE 300 TSW Service Manual Version AA Issue Date August 10 2005 Manual No 0 4752 Operating Features...

Page 2: ...tions They will help you to avoid potential hazards that may exist when working with this product YOU ARE IN GOOD COMPANY The Brand of Choice for Contractors and Fabricators Worldwide Thermal Arc is a...

Page 3: ...hire USA 03784 603 298 5711 www thermalarc com Copyright 2001 by Thermal Dynamics Corporation All rights reserved Reproduction of this work in whole or in part without written permission of the pub li...

Page 4: ...2 09 High Frequency Interference 2 5 2 10 Specifications 2 6 2 11 Electrical Parameters For 300TSW 2 7 2 12 Duty Cycle 2 8 SECTION 3 INSTALLATION 3 1 3 01 Environment 3 1 3 02 Location 3 1 3 03 Elect...

Page 5: ...ce Malfunctions 7 4 SECTION 8 PCB DESCRIPTIONS 8 1 8 01 Main PCB WK 4961 8 1 8 02 Control Source PCB PCB2 WK 4983 8 2 8 03 Power Supply Voltage Reference Points on Control PCB2 WK 4983 8 5 8 04 Detect...

Page 6: ...8 25 8 21 Replacing IGBT Q3 Q4 Gate Driver circuit components on PCB11 WK 4963 8 26 SECTION 9 PARTS LIST 9 1 9 01 Equipment Identification 9 1 9 02 How To Use This Parts List 9 1 9 03 300 TSW Parts Li...

Page 7: ...two welding machines at the same time or touch other people with the holder or electrode 8 Do not use worn damaged undersized or poorly spliced cables 9 Do not wrap cables around your body 10 Ground t...

Page 8: ...es Breathing these fumes and gases can be hazardous to your health 1 Keep your head out of the fumes Do not breath the fumes 2 If inside ventilate the area and or use exhaust at the arc to remove weld...

Page 9: ...nect work cable to the work as close to the welding area as practical to prevent welding current from traveling long possibly unknown paths and causing electric shock and fire hazards 9 Do not use wel...

Page 10: ...ore installing or connecting unit 3 Have only qualified people remove guards or covers for maintenance and troubleshooting as necessary 4 To prevent accidental starting during servicing disconnect neg...

Page 11: ...wisting or taping them 2 Arrange cables to one side and away from the operator 3 Do not coil or drape cable around the body 4 Keep welding power source and cables as far away from body as practical AB...

Page 12: ...l arc AVERTISSEMENT L ELECTROCUTION PEUT ETRE MORTELLE Une d charge lectrique peut tuer ou br ler gravement L lectrode et le circuit de soudage sont sous tension d s la mise en circuit Le circuit d a...

Page 13: ...aine et cuir et des chaussures de s curit 5 Portez un casque antibruit ou des bouchons d oreille approuv s lorsque le niveau de bruit est lev AVERTISSEMENT LES VAPEURS ET LES FUMEES SONT DANGEREUSES P...

Page 14: ...e ou du fil lectrode avec un objet m tallique peut provoquer des tincelles un chauffement ou un incendie 1 Prot gez vous ainsi que les autres contre les tincelles et du m tal chaud 2 Ne soudez pas dan...

Page 15: ...MOTEURS PEUVENT ETRE DANGEREUX LES GAZ D ECHAPPEMENT DES MOTEURS PEUVENT ETRE MORTELS Les moteurs produisent des gaz d chappement nocifs 1 Utilisez l quipement l ext rieur dans des aires ouvertes et b...

Page 16: ...eut tre br lant et sous pression 1 N tez pas le bouchon de radiateur tant que le moteur n est pas refroidi 2 Mettez des gants et posez un torchon sur le bouchon pour l ter 3 Laissez la pression s chap...

Page 17: ...representative of Thermal Arc is authorized to change this warranty in any way or grant any other warranty PURCHASER S RIGHTS UNDER THIS WARRANTY ARE VOID IF REPLACEMENT PARTS OR ACCESSORIES ARE USED...

Page 18: ......

Page 19: ...escribed in Subsection 3 of this manual B Modifications No physical or electrical modifications other than selec tion of standard options and accessories are to be made to this equipment C Customer Op...

Page 20: ...ircuit Breaker AC Auxiliary Power Remote Duty Cycle Percentage Amperage Voltage Hertz cycles sec Frequency Negative Positive Direct Current DC Protective Earth Ground Line Line Connection Auxiliary Po...

Page 21: ...c Welding GTAW Gas Tungsten Arc Welding Pulsed GTAW P Gas Tungsten Arc Welding Sloped GTAW S and Shielded Metal Arc Welding SMAW processes The source is totally enclosed in an impact resistant flame r...

Page 22: ...RIC SHOCK can kill DO NOT TOUCH live electrical parts Disconnect input power conductors from de energized supply line before moving the welding power source WARNING FALLING EQUIPMENT can cause serious...

Page 23: ...from the machine can occur if the case is metal and is not properly grounded It can occur through apertures such as open access panels The shielding of the high frequency unit in the Power Source will...

Page 24: ...Stick Welding Current Range Effective Input Current for Max Welding Current Maximum Input Current for Max Welding Current Maximum Input Current for Short Circuit Flexible Supply Cable Size Factory Fi...

Page 25: ...3 seconds Set Weld Mode to Lift TIG check at 415V and 5A output to be within the following limits by shorting pin A B in the 14 pin socket Output terminal short circuited Output Current 26 4 A Set We...

Page 26: ...tings will cause the thermal overload protection circuit to become energized and shut down the output until the unit has cooled to normal operating temperature CAUTION Continually exceeding the duty c...

Page 27: ...onnections WARNING ELECTRIC SHOCK can kill SIGNIFICANT DC VOLTAGE is present after removal of nput power DO NOT TOUCH live electrical parts SHUT DOWN welding power source disconnect input power employ...

Page 28: ...t used for Single phase operation Input Voltage Fuse Size 208 VAC 100 Amps 230 VAC 90 Amps 460 VAC 25 Amps Table 3 1 Electrical Input Connections NOTE Fuse size is based on not more than 200 percent o...

Page 29: ...E Note the available input power Damage to the PCA could occur if 575VAC or higher is applied The Following Primary Current Recommendations are required to obtain the maximum welding current and duty...

Page 30: ...PRO WAVE 300TSW 3 4 August 10 2005...

Page 31: ...the digital meter Pushing the knob in previews the actual welding voltage while welding 2 Remote Control Socket The 14 pin Remote Control Socket is used to connect remote current control devices to t...

Page 32: ...ale plug is inserted and turned securely to achieve a sound electrical connection CAUTION Loose welding terminal connections can cause overheating and result in the male plug being fused in the bayone...

Page 33: ...using a remote contactor device to control sequence SLOPE No Yes Yes 4T operation in TIG Modes with repeat operation and crater fill using a remote contactor device REPEAT No Yes No 2T operation spot...

Page 34: ...ets the peak start current on top of the BASE WELD current e g HOT START current 130 amps when BASE WELD 100 amps HOT START 30 amps INITIAL CUR This parameter operates in SLOPE or REPEAT 4T TIG modes...

Page 35: ...released after it has been depressed The SAVE LOAD buttons are used to save and retrieve a total number of 5 programs into the 300TSW memory This parameter sets the Background current when in Pulse T...

Page 36: ...sec No Yes Yes PULSE WIDTH 15 to 80 50 1 No Yes Yes See Table 6 AC FREQUENCY 15 to 150Hz 50Hz 1Hz Yes Yes Yes WAVE BALANCE 10 to 65 50 1 Yes Yes Yes DOWN SLOPE 0 to 25 sec 3 sec 0 1 sec No Yes Yes CR...

Page 37: ...ture ON OFF switch Primary voltage Supply ON OFF switch located on rear panel Reduces the OCV when the power supply is not in use Eliminates the need for add on voltage reducers and has no effect on a...

Page 38: ...on ie 1 to 5 press the right scroll button and the machine will give a beep to confirm the weld parameters from the control panel are saved LOAD retrieve a Program to Control Panel Press the LOAD butt...

Page 39: ...as welding arc voltage varies between different classes of electrodes welding current at any one setting would vary according to the type of electrode in use The operator should use the welding curren...

Page 40: ...odes Standard Slope Slope w repeat Spot 4 Digital LED display Welding amperage and parameter values are displayed in this window Internal warnings such as over temperature low or high input voltage ap...

Page 41: ...eing adjusted on the weld sequence graph Use the control knob to adjust each parameter Set PRE FLOW time Set HOT START current Set POST FLOW time Set WELD current Set POST FLOW time Slope Mode Paramet...

Page 42: ...tial current setting 2 Open Remote Switch current increases to weld current Once welding arc has reached weld current the power source will maintain weld current as long as the remote switch contacts...

Page 43: ...rent provides a system in which the welding current continuously changes between two levels During the periods of Peak current heating and fusion takes place and during the background base current per...

Page 44: ...sult with substantial penalties including fines and in certain cases jail sentences It is therefore essential employers acquire safe equipment and ensure its employees are properly trained in its use...

Page 45: ...rol Gently pry back the front panel controls to access the VRD ON OFF switch Art A 05563 Figure 4 11 VRD Control CAUTION DO NOT pull back the front panel with excessive force as this will unplug the c...

Page 46: ...E L OAD ON OFF V R D Refer to Manual for correct use Figure 4 13 Front panel 1 Turn on the power source 2 After more than 8 sec set weld mode to DC STICK mode If from the beginning the display was in...

Page 47: ...ts should also be conducted by an accredited Thermal Arc service provider If this equipment is used in a hazardous location or environments with a high risk of electrocution then the above tests shoul...

Page 48: ...out special equipment or knowledge 6 01 TIG Welding Problems Possible Cause Remedy 1 Excessive beard build up or poor penetration or poor fusion at edges of weld Welding current is too low Increase we...

Page 49: ...raise gas pressure and blow out impurities E Gas regulator turned off E Turn on F Torch valve is turned off F Turn on G The electrode is too small for the welding current G Increase electrode diamete...

Page 50: ...tion to work piece 6 02 Stick Welding Problems Description Possible Cause Remedy 1 A Electrodes are damp A Dry electrodes before use B Welding current is too high B Reduce welding current C Surface im...

Page 51: ...n undercut from A If bad undercut is present clean slag out and cover with a run B Joint preparation too restricted B Allow for adequate penetration and room for cleaning out the slag C Irregular depo...

Page 52: ...ains supply voltage Defective control circuit Have an Accredited Thermal Arc Service Agent inspect then repair the welder 3 Welding current reduces when welding Poor work lead connection to the work p...

Page 53: ...Arc Service Agent inspect then repair the welder C Gas valve jammed open C Have an Accredited Thermal Arc Service Agent replace gas valve D POST FLOW control is set to 60 sec D Reduce POST FLOW time 6...

Page 54: ...wn then keep within its duty cycle B Fan ceases to operate B Refer to section Cooling Fan is not rotating C Air flow is restricted by vents being blocked C Unblock vents then let Power Source cool dow...

Page 55: ...Primary IGBT Q1 Q2 E Check Primary IGBT Q1 Q2 F Faulty Secondary IGBT Q3 Q4 F Check Secondary IGBT Q3 Q4 G Current Transformer CT1 G Replace Current transformer CT1 if damaged Check that Wiring and p...

Page 56: ...ared replace PCB11 WK 4963 D Defective Control PCB5 WK 4919 D Replace control PCB5 WK 4919 When replacing refer to PCB section E11 error code displayed Over Primary supply input voltage at primary cap...

Page 57: ...re charge circuit components E81 error code displayed Wrong Primary supply input voltage connected A The wrong mains supply input voltage is connected A Check that 3 phases are present and that input...

Page 58: ...ly input voltage when the on off switch on rear panel of machine is turned ON A The Primary supply input voltage fluctuates and is not stable A Check input power supply cable electrical connections No...

Page 59: ...PCB1 WK 4961 are connected firmly C Input Rectifier D1 C Check the Input Rectifier D1 D Pre charge circuit at PCB1 D Check connections and Pre charge resistor R44 at PCB1 WK 4961 and Pre charge relay...

Page 60: ...rmly Weld current ceases Buzzer sounds constantly Switch machine off B Defective Thermistor TH1 and or TH2 B To check Thermistors THI and TH2 remove the plug from the CN8 connector Measure between pin...

Page 61: ...tion C Connector plug connections from PCB2 WK 4983 to PCB9 WK 4917 C Check wiring and connections at connector CN1 on PCB9 WK 4917 and connector CN1 on PCB2 WK 4983 are connected firmly D Connector p...

Page 62: ......

Page 63: ...and Tools a Digital Multi meter with diode test function and insulated shaft test probes b Phillips and slotted head screwdriver c Long nose pliers diagonal cutter and circlip pliers d Nut driver and...

Page 64: ...nd rear panels Art A 05572 Figure 7 3 Front panel removal 5 Remove the side covers Art A 05573 Figure 7 4 Side cover removal 6 Remove protection cover sheet by removing the plastic tabs Art A 05574 Fi...

Page 65: ...ts including the Input Recti fier IGBT Modules Secondary Diode Modules and the PCBs Look in particular for the following a Loose or broken wires or connectors b Cracked or broken cores on the high fre...

Page 66: ...dropped to 15VDC If voltage is present and Cooling fan is not rotating replace Cooling fan E Power Supply Voltage to the Cooling Fan circuit is not present on PCB2 WK 4983 E After Power Source is tur...

Page 67: ...between PCB4 WK 4984 and PCB7 WK 5012 and or between PCB4 WK 4984 and PCB8 WK 5012 C Check wiring and connections for Q1 Gate Driver signal between connector CN5 on PCB4 WK 4984 and connector CN1 on...

Page 68: ...PCB2 WK 4983 and or PCB5 WK 4919 L Check Power Supply Voltages are present at PCB2 WK 4983 and connector CN1 on PCB5 WK 4919 If not present replace PCB2 WK 4983 Refer to section for PCB2 Power Supply...

Page 69: ...ore replacing refer to section on routine inspection and maintenance J Defective Opto coupler PHC3 on PCB2 WK 4983 J After Power Source is turned on for approx 8 seconds check connector CN12 Pins 3 an...

Page 70: ...Resistor R2 short or open circuit I Replace Resistor R2 if faulty blown burnt cracked etc J Voltage is not present between terminals AC1 and AC2 at H F Unit J Check that voltage at AC1 and AC2 at H F...

Page 71: ...n then be changed replace CT1 C PCB plug connections from PCB5 WK 4919 to PCB6 WK 4971 C Check that all four connectors between PCB5 WK 4919 and PCB6 WK 4971 are firmly connected Check the condition o...

Page 72: ...PRO WAVE 300TSW 7 10 August 10 2005...

Page 73: ...dt snubbers and primary current transformers Circuit Function Parts Used In rush current protection R44 RY1 RY2 Input rectifier circuit DC cut capacitor Primary over current detection CT1 CT2 Balance...

Page 74: ...rface PCB Circuit Function Parts Used Auxiliary power supply circuit Auxiliary transformer T1 Gas Solenoid valve operation Opto coupler PHC3 Output voltage detection T6 Output short circuit detection...

Page 75: ...z 2 30V 100kHz 3 Not used Not used 4 Not used Not used 5 CN10 1 0 16V output short detection 2 Not used Not used 3 0 16V output short detection 4 Not used Not used 5 6 Not used Not used 7 0 70V HF uni...

Page 76: ...C 4 GND 5 6 7 CN17 1 26 CN19 1 0 12 remote panel signal 2 0 10V remote signal 3 0 10V remote signal 4 0 10V remote signal 5 0 12 remote panel signal CN20 1 12V 2 3 0 4V voltage signal 4 0 4V Current s...

Page 77: ...0 Pin 7 VRD sensing circuit Voltage Regulator IC8 CN121 1 12VDC CN1 Pin 2 Primary Circuit Power Supply Voltage Regulator IC7 Component Point Value Reference Description Diode D64 Cathode 5VDC Anode ve...

Page 78: ...detect input 11 0 5V as primary DC voltage primary DC voltage detect input 12 Not used Not used 13 0 5V as primary AC voltage primary AC voltage detect input CN4 1 Not used Not used 2 Link Plug 3 Not...

Page 79: ...r CN5 CN4 CN223 Art A 05578 Figure 8 4 IGBT Driver PCB WK 4984 Connector Pin Value Description CN4 1 0 20V 30kHz pulse 2 0 20V 30kHz pulse 3 Not used Not used 4 Not used Not used 5 0 20V 30kHz pulse 6...

Page 80: ...t DIP Switch DSW1 DSW2 CN1 IC20 VRD ON OFF CN3 CN4 CN10 CN6 CN7 CN8 CN5 CN2 Art A 05579 Figure 8 5 Control PCB WK 4919 Connector Pin Value Description CN1 1 7 CN2 1 0 5V input power detection 2 0 5V 3...

Page 81: ...4 pulse of 12V peak secondary IGBT drive signal 5 pulse of 12V peak secondary IGBT drive signal 6 0 12V start compensation signal 7 0V if error over voltage error signal CN4 1 12 CN5 1 12 CN6 1 12 CN...

Page 82: ...WK 4971 Circuit Function Parts Used Operation circuit Encoder LED circuit Switch LED CN5 CN6 CN4 CN7 Encoder Art A 05580 Figure 8 6 Front Controls PCB WK 4971 Connector Pin Value Description CN4 1 12...

Page 83: ...ent Suppression PCB Circuit Function Parts Used Input filter circuit Y Capacitor Surge protection circuit ZNR Input voltage detection circuit Discharge GAP SA5 SA5 CN1 Art A 05581 Figure 8 7 Filter 43...

Page 84: ...PCB circuit description Starting Arc stability and filter circuit Circuit Function Parts Used Output filter circuit Starting arc stability circuit CN2 CN1 Art A 05582 Figure 8 8 Start PCB WK 4970 Conn...

Page 85: ...C3 D3 CN5 CN4 CN3 Art A 05583 Figure 8 9 Secondary IGBT Gate Driver PCB WK 4963 Connector Pin Value Description CN1 1 270VAC 2 Not used Not used 3 270VAC CN2 1 30V 100kHz 2 Not used Not used 3 30V 100...

Page 86: ...e 8 0 15V positive pole 9 0 15V positive pole CN5 1 to external resister 2 Not used Not used Secondary IGBT Gate Driver PCB PCB11 WK 4963 U01 8 12 Filter PCB PCB14 WK 5022 Circuit Function Parts Used...

Page 87: ...Control PCB 5 WK 4919 Switch Settings CAUTION When fitting a new Control PCB5 WK 4919 the Welding Parameter Setting must be set Refer to section 4 09 Art A 05585 Figure 8 11 Control PCB5 WK 4919 Art A...

Page 88: ...ply 1 5 2 5 N m torque to the M5 mounting screws and the M5 Terminal screws Clean and reapply heat sink compound Shinetsu silicon G 747 or equivalent uniformly to the base surface of the Input Rectifi...

Page 89: ...BT Q1 Q2 c Confirm there is no abnormal appearance on PCB7 PCB8 WK 5012 d Verify the IGBT Q1 Q2 Collector Emitter test using a diode tester e Verify the IGBT Q1 Q2 Gate Emitter test using an ohm meter...

Page 90: ...1 Q2 with PCB7 PCB8 G2 E2 Ohms 2178 2222 ACCEPTABLE VALUE Diode Test Diode Test COMPONENT TESTED TERMINALS TESTER MODE Table 8 3 IGBT Q1 Q2 Test Points PCB7 8 G2 E 1 E 2 G1 Art A 05591 Figure 8 17 IGB...

Page 91: ...he connections from the terminals of IGBT Q3 Q4 c Confirm there is no abnormal appearance on PCB12 13 WK 3367 d Verify the characteristic of the IGBT Q3 Q4 using a diode tester e Refer to Table 8 5 Fi...

Page 92: ...ACCEPTABLE VALUE 2178 2222 ohms Ohms E2 2178 2222 ohms TERMINALS G2 G1 E1 Ohms COMPONENT TESTED Diode Test Diode Test Tester Mode Table 8 5 IGBT Q3 Q4 Test Points G2 E 1 E 2 G1 PCB12 13 Art A 05594 Fi...

Page 93: ...Diode d Verify the characteristic of the Diode using a diode tester e Refer to Table 8 7 and Figure 8 23 for the test points on D2 D3 D4 D5 D6 CAUTION In the event of replacing a failed diode it is re...

Page 94: ...rt A 05597 Figure 8 23 Diodes D2 D3 D3 D4 D5 D6 Test Points Mounting Screws M4 1 0 1 4 N m Terminal Screws M4 1 0 1 4 N m Diode D2 D3 D4 D5 D6 Torque Values Refer to CAUTION on previous page Table 8 8...

Page 95: ...abnormalities observed with the H F points replace the H F points The H F points Gap is factory set for an optimal setting for most welding applications It is recommended that the H F points Gap sett...

Page 96: ...lowing 1 x 12VDC 10A Relay RY1 1 x 12VDC 5A Relay RY2 1 x Resistor R44 Remove faulty components by carefully removing all solder using a de soldering tool Solder in replacement components as supplied...

Page 97: ...1 x Transistor Q21 Cooling Fan 1 x Opto coupler PHC4 Cooling Fan 1 x Transistor Q5 Gas Solenoid 1 x Opto coupler PHC3 Gas Solenoid Remove faulty components by carefully removing all solder using a de...

Page 98: ...0 1 x Resistor R32 1 x Resistor R33 1 x Zener Diode ZD4 1 x Zener Diode ZD5 1 x Opto coupler PHC2 1 x Opto coupler PHC3 Remove faulty components by carefully removing all solder using a de soldering t...

Page 99: ...nd a corresponding list of parts which contains a breakdown of the equipment into assemblies subassemblies and detail parts All parts of the equipment are listed except for commercially available hard...

Page 100: ...GBT DRIVER 10 6774 PCB5 1 PCB WK 5157 U05 AC CONTROL 10 6846 1 PCB6 1 PCB WK 5037 U02 AC TIG PANEL 10 6775 PCB9 1 PCB WK 4917 U04 FILTER 480V 10 6740 PCB10 1 PCB WK 4970 U01 START PCB 10 6776 PCB11 1...

Page 101: ...84 2 Output Terminal female TRAK BE35 70S 10 6660 1 Input Cable SOOW AWG8X4C L 3 4m Ref Only 1 Input Cable Clamp EBA156800 10 6795 1 Heatsink E1B548900 FIN 1 10 6796 1 Heatsink E1B549000 FIN 2 10 6797...

Page 102: ...ft Chassis J2C976800 10 6815 1 PCB10 Chassis JDA013400 10 6816 1 Transformer Chassis 2 JDA024800 10 6817 1 Transformer Chassis 1 JDA026000 10 6818 1 Transformer Hold Chassis 2 JDA064300 10 6819 2 Tran...

Page 103: ...PRO WAVE 300TSW August 10 2005 A 1 APPENDIX 1 GENERAL INFORMATION Note the model and specification number shown on the equipment nameplate...

Page 104: ...PRO WAVE 300TSW A 2 August 10 2005 APPENDIX 2 PRO WAVE 300 TSW PARTS ARRANGEMENT CON1 PCB15 T01 T01 D5 Q4 D4 Q3 L105 PCB11 PCB13 PCB12...

Page 105: ...PRO WAVE 300TSW August 10 2005 A 3 L101 L103 L102 PCB2 PCB4 PCB5 PCB6 PCB3 PCB9 PCB14 PCB1 PCB8 PCB7 FAN T1 T2 TH1 Q1 Q2 D1 FCH S1 R2 L104 PCB1 T3 PCB10 R3 R3 HF UNIT Art A 05602...

Page 106: ...uitCo mmon F Not Us ed G Chassis Grou nd H Not Us ed I Not Us ed J Not Us ed K Not Us ed L Not Us ed M OK To Mov e Cu rrent Detect Signal N OK To Mo ve Current Detect Circuit FAN SOL CON1 P CB7 P CB8...

Page 107: ...2 CN17 TB9 TB10 TB6 TB7 PCB2 PCB5 PCB11 PCB6 PCB12 PCB10 PCB13 T1 T2 HF UNIT D7 D6 D5 FCH CC Q3 Q4 R2 R3 CT1 PCB15 CN13 2 1 4 3 L105 12V 12V I_SENSE GND CN10 3 1 5 7 9 CN9 2 5 1 CN16 2 1 4 3 5 6 7 CN1...

Page 108: ......

Page 109: ...ire England PR6 7Bx Telephone 44 1257 261755 Fax 44 1257 224800 Thermadyne Asia Pacific Pte Ltd 5 Shenton Way 37 02 38 02 UIC Building Singapore 068808 Telephone 65 6832 8066 Fax 65 6763 5812 Thermady...

Page 110: ...Corporate Headquarters 82 Benning Street West Lebanon NH 03784 USA Telephone 603 298 5711 800 752 7621 Fascimile 800 221 4401 Email sales thermalarc com www thermalarc com...

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