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TROUBLESHOOTING & REPAIR

F-34

V160-S & -T

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7MM SCREWS

10MM SCREWS

MAIN IGBT INVERTER BOARD REMOVAL AND REPLACEMENT

PROCEDURE

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FIGURE F.19 MAIN IGBT INVERTER BOARD MOUNTING BOLTS

Содержание IMVERTEC V160-T

Страница 1: ...7 1199 U S A TEL 216 481 8100 FAX 216 486 1751 WEB SITE www lincolnelectric com World s Leader in Welding and Cutting Products Copyright Lincoln Global Inc Safety Depends on You Lincoln arc welding an...

Страница 2: ...NJURY OR DEATH KEEP CHILDREN AWAY PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strong...

Страница 3: ...from sparks and the rays of the arc when welding or observing open arc welding Headshield and filter lens should conform to ANSI Z87 I standards 4 b Use suitable clothing made from durable flame resis...

Страница 4: ...If this is not possible cover them to prevent the welding sparks from starting a fire Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to ad...

Страница 5: ...aillant proximit au soudage l aide d crans appropri s et non inflammables 4 Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l hui...

Страница 6: ...ration V160 S Section B Operation V160 T Section BB Accessories V160 S Section C Accessories V160 T Section CC Maintenance V160 S Section D Maintenance V160 T Section DD Theory of Operation V160 S Sec...

Страница 7: ...A 1 Technical Specifications A 2 Safety Precautions A 3 Select Suitable Location A 3 Stacking A 3 Tilting A 3 Input Connections A 3 Ground Connection A 3 A 4 Output Connections A 5 Output and Gas Conn...

Страница 8: ...pprox 24 2lbs 320 mm 200 mm 430 mm 11 kgs PHYSICAL DIMENSIONS TEMPERATURE RANGES OPERATING TEMPERATURE RANGE 20 C to 40 C STORAGE TEMPERATURE RANGE 50 C to 85 C RECOMMENDED INPUT WIRE AND FUSE SIZES F...

Страница 9: ...rated in ambient temperatures greater than 40 C the output duty cycle may be reduced Do not mount over combustible surfaces STACKING The Invertec V160 S cannot be stacked TILTING Place the machine dir...

Страница 10: ...tore Fuse The dual input voltage machine is provided with an ARFU device It only operates when the input is con nected to an 115V supply and protects from input over current conditions When the ARFU h...

Страница 11: ...include a TIG torch but one may be purchased separately The Lincoln K1781 7 PTA 9FV K1782 11 PTA 17FV and K1782 6 K1782 8 PTA 17V are recommended for use with this machine for this purpose however an...

Страница 12: ...ew will be well below the surface of the brass plug after tightening OUTPUT CONNECTION FOR TIG WELDING A one piece Gas Valve Tig Torch is recommended for use with the V160 S A K960 1 Tig Torch adapter...

Страница 13: ...eturn to Master TOC V160 S T Operation B 1 Safety Precautions B 2 General Description B 2 Welding Capability B 2 Limitations B 2 Rear Control Panel B 3 Controls and Settings B 3 B 4 DIP Switch Functio...

Страница 14: ...mended for stick welding with such popular electrodes as Fleetweld 35 Fleetweld 37 Fleetweld 180 and LH 78 It features adjustable arc control to adjust the arc force and start The Invertec V160 S perf...

Страница 15: ...a TIG weld by first pressing the TIG torch electrode on the work piece in order to create a low current short circuit Then the electrode is lifted from the work piece to start the TIG arc 4 Arc Contro...

Страница 16: ...remote control device with trigger only circuit such as the K814 Arc Start Switch will not be sensed by the V160 S remote control connection and therefore will not allow con trol of the output 3 Mode...

Страница 17: ...r change the DIP Switches with power applied to the machine Only Lincoln trained service technicians are authorized to per form these modifications The DIP switches are numbered from 1 to 8 shown in F...

Страница 18: ...f the following functions are clearly understood DIP Switch 1 ON In TIG welding mode the following conditions can exist No TIG slopes are available If slopes are needed a foot pedal remote control can...

Страница 19: ...S ACCESSORIES SECTION C 1 C 1 Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC V160 S T Accessories C 1 Optional Accessories and Compatible Equipment C 2 Factory Fie...

Страница 20: ...the torch The following 1 piece cable torches can be used with a K960 1 adapter K1782 6 12 50 Ft 1 Piece Cable K1782 8 25 0 Ft 1 Piece Cable PTA 9FV TIG Torch Gas Valve flexible head torch K1781 7 25...

Страница 21: ...NANCE SECTION D 1 D 1 Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC V160 S T Maintenance D 1 Safety Precautions D 2 Input Filter Capacitor Discharge Procedure D 2...

Страница 22: ...which are charged to a high voltage during power on conditions This voltage is dangerous and must be discharged before the machine can be serviced Discharging is done automatically by the machine each...

Страница 23: ...W05X0250 SCHEMATIC X0203 Y G BLACK RED W1 DC DC JP1 JP1 JP2 GND AC2 AC1 BROWN BLUE BLACK WHITE S1 1 3 4 2 DC DC A 115 230 1 50 60 Vac GREEN FAN J1 WELD CONTROLLER W05X0233 SCHEMATIC X0233 DISPLAY BOAR...

Страница 24: ...The Invertec V 160 S is rated at 160 amps 26 4 volts at 35 duty cycle on a ten minute basis It is capable of higher duty cycles at lower output currents It is capable of 130 amps 25 2 volts at a 100 d...

Страница 25: ...c system manages by reconnect board mounted on the input board sets the input board for 115V or 230V working mode volt age duplicator when 115Vac is applied After this time the start relays go closed...

Страница 26: ...cing Do not touch electrically live parts Only qualified persons should install use or service this machine 1 2 3 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 26 25 24 23 22 21 20 19...

Страница 27: ...all the potentiometer switches and LED FIGURE E 5 CONTROL DISPLAY BOARD INVERTER BOARD W05X0190 SCHEMATIC X0190 GND DC DC W1 W2 INPUT BOARD W05X0250 SCHEMATIC X0203 Y G BLACK RED W1 DC DC JP1 JP1 JP2...

Страница 28: ...current to the components connected to the source The circuit is turned OFF like a light switch Example B shows the IGBT in an active mode When the gate signal a positive DC voltage relative to the so...

Страница 29: ...ct Suitable Location AA 3 Stacking AA 3 Tilting AA 3 Machine Grounding and High Frequency Interference Protection AA 3 AA 4 Input Connections AA 4 Ground Connection AA 4 AA 5 Output Connections AA 6 O...

Страница 30: ...STORAGE TEMPERATURE RANGE 50 C to 85 C RECOMMENDED INPUT WIRE AND FUSE SIZES FOR MAXIMUM RATED OUTPUT INPUT VOLTAGE FREQUENCY HZ 230 50 60 MAXIMUM TIME DELAY CIRCUIT BREAKER OR FUSE SIZE AMPS 30 TYPE...

Страница 31: ...nto the machine should be kept to a minimum Keep the machine dry and do not place it on wet ground or in puddles Locate the machine away from radio controlled machinery Normal operation may adversely...

Страница 32: ...ed rigid metal lic conduit or equivalent shielding Flexible metallic conduit is generally not suitable 8 When the welder is enclosed in a metal building several earth driven electrical grounds connect...

Страница 33: ...store Fuse The dual input voltage machine is provided with an ARFU device It only operates when the input is con nected to an 115V supply and protects from input over current conditions When the ARFU...

Страница 34: ...sert the connector with the key lining up with the key way and rotate approximately 1 4 turn clockwise until the connection is snug Do not over tighten OUTPUT AND GAS CONNECTION FOR TIG WELDING FIGURE...

Страница 35: ...able will need to have a plug attached 1 Cut off welding cable lug if present 2 Remove 75 in 19mm of welding cable insulation 3 Slide rubber boot onto cable end The boot end may be trimmed to match th...

Страница 36: ...Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC NOTES AA 8 AA 8 V160 S T...

Страница 37: ...Rear Control Panel BB 3 Controls and Settings 2 Step and 4 Step Tig Sequence BB 3 BB 6 DIP Switch Functions Service Information BB 7 DIP Switch 1 Machine Type BB 7 DIP Switch 2 Preflow Timer BB 7 DIP...

Страница 38: ...AW and TIG GTAW The unit is ideal for indus trial applications where portability is important The Invertec V160 T performs DC TIG with high fre quency or Touch Start Tig Starting with excellent result...

Страница 39: ...gulator and flow gage installed See Figure BB 1 CONTROLS AND SETTINGS See Figure BB 2 4 Mode Switch This switch changes the welding modes of the machine The V160 T has three weld ing modes Stick SMAW...

Страница 40: ...rent Control 11 Downslope Control 12 Postflow Control 13 Digital Display 8 Remote LED This indicator will turn ON when a remote control is connected to the machine via the remote control connector Usi...

Страница 41: ...current TRIGGER MODE SEQUENCES For the V160 T TIG welding can be done in either the 2 step or 4 step mode which is selected with the Trigger Mode Switch DIP Switch functions are set by the factory For...

Страница 42: ...cally pass from Step 1 to Step 2 when the arc is started 2 Release the TIG torch trigger to start the main part of the weld The output current will increase to the welding current The time for this in...

Страница 43: ...ans are authorized to per form these modifications The DIP switches are numbered from 1 to 8 shown in Figure BB 3 Switch 1 is on the bottom and switch 8 is on the top When a switch is pushed to the ri...

Страница 44: ...rigger to stop welding The machine will now decrease the output current at a controlled rate downslope until the Start Crater current is reached and the output of the machine is turned OFF After the a...

Страница 45: ...weld The output current will be increased upslope to the welding current 3 Press and hold the TIG torch trigger when the main part of the weld is complete The machine will now decrease the output curr...

Страница 46: ...e machine is turned OFF After the arc is turned OFF the postflow time will start 4 Release the TIG torch trigger The output current will again increase upslope to the welding current like in step 2 to...

Страница 47: ...IP Switch 1 which selects the machine type This setting can be changed but only if the following functions are clearly understood DIP Switch 1 OFF In TIG welding mode the following conditions can exis...

Страница 48: ...ust the start crater current output current from the machine must flow through a load bank or a TIG arc Connect the necessary equipment In both cases load bank or TIG arc a trigger must be con nected...

Страница 49: ...CCESSORIES SECTION CC 1 CC 1 Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC V160 S T Accessories CC 1 Optional Accessories and Compatible Equipment CC 2 Factory Fi...

Страница 50: ...and PTA 17 TIG Torches The fol lowing standard Magnum TIG torches with one piece cable may be used with the Invertec V160 T K1781 1 PTA 9 12 5 ft medium back cap K1781 3 PTA 9 25 ft medium back cap K1...

Страница 51: ...Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC V160 S T Maintenance DD 1 Safety Precautions DD 2 Input Filter Capacitor Discharge Procedure DD 2 Routine Maintenanc...

Страница 52: ...which are charged to a high voltage during power on conditions This voltage is dangerous and must be discharged before the machine can be serviced Discharging is done automatically by the machine eac...

Страница 53: ...OC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 1 Front Assembly 2 Rear Assembly 3 Base Main As...

Страница 54: ...Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC NOTES DD 4 DD 4 V160 S T...

Страница 55: ...C X0203 Y G BLACK RED W1 DC DC JP1 JP1 JP2 GND AC2 AC1 BROWN BLUE BLACK WHITE S1 1 3 4 2 DC DC A 115 230 1 50 60 Vac GREEN FAN J1 WELD CONTROLLER W05X0233 SCHEMATIC X0233 DISPLAY BOARD W05X0245 SCHEMA...

Страница 56: ...15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D E C B A METER BOARD W05X0207 SCHEMATIC X0207 GENERAL DESCRIPTION The V160 T is an industrial 160 amp arc welding power source which utilizes singl...

Страница 57: ...istances located on input board that limit the charge current During precharge time an automatic system manages by reconnect board mounted on the input board sets the input board for 115V or 230V work...

Страница 58: ...ut the current from the main transformer The choke fil ters the output current The shunt provides output feedback information to the control board INVERTER BOARD W05X0190 SCHEMATIC X0190 GND DC DC W1...

Страница 59: ...ter board Displays the pre set and actual output current FIGURE EE 5 DISPLAY BOARD INVERTER BOARD W05X0190 SCHEMATIC X0190 GND DC DC W1 W2 INPUT BOARD W05X0250 SCHEMATIC X0203 Y G BLACK RED W1 DC DC J...

Страница 60: ...current to the components connected to the source The circuit is turned OFF like a light switch Example B shows the IGBT in an active mode When the gate signal a positive DC voltage relative to the so...

Страница 61: ...cedures and Replacement F 3 Troubleshooting Guide F 4 Case Removal F 7 Test Procedures Input Board Capacitor Discharge Procedure F 9 Input Board Test F 11 Main IGBT Inverter Board V160 T Welding Logic...

Страница 62: ...It also specifies the appropriate test procedure to verify that the subject com ponent is either good or bad If there are a number of possible components check the components in the order listed to el...

Страница 63: ...ment Do not touch electrically hot parts Remove the PC board from the static shielding bag and place it directly into the equipment Don t set the PC board on or near paper plastic or cloth which could...

Страница 64: ...Return to Master TOC Return to Master TOC The machine is dead No LED No Fan 1 Make sure that the input volt age is present 2 Check the input switch 3 Check the fuse F1 F2 Auto depending upon input bo...

Страница 65: ...operate 1 Check if the machine is in stand by condition after 5 min utes of inactivity in tig mode the fan stops 2 Check the fan supply voltage must be 12vdc 1 Replace the fan 2 Perform the Input Boar...

Страница 66: ...Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC NOTES F 6 F 6 V160 S T...

Страница 67: ...is manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical trou bleshooting a...

Страница 68: ...the four screws on the back See Figure F 1 3 Pull out the rear panel take off the handle then remove the cover 4 Perform the Input Filter Capacitor Discharge Procedure detailed in this section TROUBLE...

Страница 69: ...s detailed throughout this manual If for any reason you do not understand the test procedures or are unable to per form the test repairs safely contact the Lincoln Electric Service Department for elec...

Страница 70: ...lder pads located on the input board See Figure F 2 4 Obtain a high resistance and high wattage resistor 25 1000 ohms and 25 watts minimum This resistor is not with the machine NEVER USE A SHORTING ST...

Страница 71: ...afety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to per form the test repairs safely contact the Lincoln Electric...

Страница 72: ...C Return to Master TOC Return to Master TOC Return to Master TOC Input Board INPUT BOARD TEST V160 S T continued FIGURE F 3 INPUT BOARD TEST PROCEDURE 1 Remove input power to the V160S T 2 Perform Cas...

Страница 73: ...urn to Master TOC Check the start resistor 20 Ohms Check the Fuse F1 Check capacitors for shorts Check the input bridge for shorts or open Input board checks INPUT BOARD TEST V160 S T continued FIGURE...

Страница 74: ...to Master TOC Return to Master TOC PIN 2 PIN 1 PIN 16 PIN 15 CONNECTOR JP1 Voltage check on JP1 input board Refer PIN 11 as ground Pin 5 5Vdc Pin 7 15Vdc Pin 9 5Vdc INPUT BOARD TEST V160 S T continue...

Страница 75: ...OC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 115V or 230Vac AC1 AC2 320 Vdc DC DC INPUT BOARD TEST V160 S T continued FIGURE F 6 INPUT BOARD TEST PROCEDURE 1...

Страница 76: ...CONNECTOR JP1 PIN 2 PIN 1 PIN 16 INPUT BOARD TEST V160 S T continued TEST PROCEDURE NEW MODELS 1 Locate connector JP1 See Figure F 6A See Figure F 7 See Figure F 8 2 Check pin 5 to pin 11 for 5vdc 3...

Страница 77: ...er TOC Return to Master TOC Return to Master TOC Revision Number 5 VDC Supply 5 VDC Supply 15 VDC Supply V160 INPUT PCB INSIDE F1 Fuse Protects Reconnect Transformer F2 Thermostat Start Resistor Recon...

Страница 78: ...Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 320 VDC Input DC 320 VDC Input DC JP1 Input PCB Output Same As Input PWM Drive PCB Inverter PCB 115AC or 230AC Input F2 Thermo...

Страница 79: ...throughout this manual If for any reason you do not understand the test procedures or are unable to per form the test repairs safely contact the Lincoln Electric Service Department for electrical tro...

Страница 80: ...turn to Master TOC Inverter Board MAIN IGBT INVERTER BOARD V160 S T WELDING LOGIC AND INVERTER SECTION TEST continued TEST PROCEDURE 1 Remove input power to the V160S T machine 2 Perform Case Cover Re...

Страница 81: ...Return to Master TOC Return to Master TOC Return to Master TOC VOLTAGE CHECKS ON JP1 INVERTER BOARD CHECK FOR 320 VDC REFER PIN 2 AS GROUND PIN 3 15 VDC PIN 7 15 VDC INVERTER OFF PIN 7 0 VDC INVERTER...

Страница 82: ...10V div Take note that you need an oscilloscope insulated from the supply line to do this measure TEST PROCEDURE 1 Locate 6 gate points indicated on Figure F 11 2 Connect scope probe set at 5us div 10...

Страница 83: ...ORMALLY IS EVIDENT CHECK FOR THERMAL PROTECTION 36 OHMS CHECK THE OUTPUT DIODES FOR SHORTS CHECK FOR 1K OHMS CHECK THE DIODES FOR SHORTS TEST PROCEDURE 1 Locate test points on inverter board See Figur...

Страница 84: ...HECK FOR SHORT 27 Ohms NORMAL INVERTER PCB OUTPUT DIODES 1K BOTH WAYS CAN BE CHECKED AT OUTPUT STUDS ALSO VOLTAGE CHECKS ON JP1 INVERTER BOARD REFER PIN 2 AS GROUND PIN 3 15 VDC PIN 7 O VDC INVERTER O...

Страница 85: ...ction TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC GATE DRIVE OUTPUT RECTIFIER OUTPUT TRANSFORMER IGBT IGB T SHUNT 1 Ohm T3 T3 INSIDE INVERTER PCB MAIN IGBT...

Страница 86: ...NOTES F 26 F 26 V160 S T Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC...

Страница 87: ...ur factory warranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test proc...

Страница 88: ...V160 S T 2 Perform the Case Cover Removal Procedure 3 Perform the Capacitor Discharge Procedure 4 Locate the Input Board See Figure F 15 5 Label and remove plugs JP1 JP2 and JP3 See Figure F 16 6 Lab...

Страница 89: ...OC Return to Master TOC AC1 AC2 DC DC JP1 JP2 HF2 HF1 JP3 Ground 7mm Mounting Bolts INPUT BOARD REMOVAL AND REPLACEMENT PROCEDURE continued FIGURE F 16 INPUT BOARD REPLACEMENT PROCEDURE 1 Connect lead...

Страница 90: ...NOTES F 30 F 30 V160 S T Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC...

Страница 91: ...your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to...

Страница 92: ...Procedure 3 Perform the Capacitor Discharge Procedure 4 Locate the Inverter Board See Figure F 17 5 Using a 7mm nutdriver remove the four P C Board mounting screws See Figure F 19 6 Label and disconne...

Страница 93: ...round MAIN IGBT INVERTER BOARD REMOVAL AND REPLACEMENT PROCEDURE continued REPLACEMENT PROCEDURE 1 Connect ground lead to new P C Board 2 Position new P C Board in its proper loca tion 3 Replace 2 10...

Страница 94: ...on TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 7MM SCREWS 10MM SCREWS MAIN IGBT INVERTER BOARD REMOVAL AND REPLA...

Страница 95: ...warranty For your safety and to avoid electrical shock please observe all safety notes and pre cautions detailed throughout this manual If for any reason you do not understand the test procedures or a...

Страница 96: ...ront mounting screws located on the bottom of the machine See Figure F 21 7 Using a 7mm nutdriver remove the two casefront mounting screws four total on either side of the machine See Figure F 20 8 Th...

Страница 97: ...VAL AND REPLACEMENT PROCEDURE continued FIGURE F 21 BOTTOM OF MACHINE REPLACEMENT PROCEDURE 1 Connect plugs J1 and JP1 to new dis play board 2 Replace the four display board mounting bolts 3 Replace c...

Страница 98: ...V160T on TIG mode set mode switch to LIFT TIG do not use HF TIG or dam age to measuring equipment will occur To test HF on V160T attach tig torch remote amptrol and argon shielding gas Input Circuit...

Страница 99: ...3 Wiring Diagram V160 T Code 10878 G 4 Wiring Diagram V160 T Code 11032 G 5 Schematic V160 S T Page 1 G 6 Schematic V160 S T Page 2 G 7 Schematic V160 S T Input PC Board G 8 Schematic V160 S T Input P...

Страница 100: ...RD W05X0250 SCHEMATIC X0203 INVERTER BOARD W05X0190 SCHEMATIC X0190 1 3 4 2 X0261 WARNING HIGH VOLTAGE CAN KILL Do not operate with covers removed Disconnect input power by unplugging power cord befor...

Страница 101: ...OARD W05X0322 SCHEMATIC X0322 W07X0261rev03 NOTE INPUT FILTER PCB NOT ON ALL MODELS NOTE DISPLAY PCB NOT ON ALL MODELS NOTE REMOTE PCB NOT ON ALL MODELS G 3 NOTE This diagram is for reference only It...

Страница 102: ...accurate for all machines covered by this manual The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine Return to Section TOC Return to Section TOC Retu...

Страница 103: ...ENOID W07X0262rev03 WARNING HIGH VOLTAGE CAN KILL Do not operate with covers removed Disconnect input power by unplugging power cord before servicing Do not touch electrically live parts Only qualifie...

Страница 104: ...3 5 C2 400V 4 F T1C 12 8 D19 STTA1206D T1D 14 10 C3 100 F 25V D2 1N4148 R20 10R R22 1mohm D3 1N4148 R13 470R C11 3n3F 1600V C6 2n2F 630V R12 100R C10 4n7F 4kV R14 10R 3W W1 C13 4n7F 4kV GND R10 470R...

Страница 105: ...D 9 3 6 C24 63V 1 F R6 1K D3 1N4148 D14 2N6509 D18 5W 160V R21 18K 1 4W RL2A C16 1200Vdc 150nF R22 680K 1 4W D8 BYV26C C25 100V 33nF JP2 1 2 3 4 D15 BYV26E RL1A W7162430 A1 A2 R24 10K 1 4W DC a R25 10...

Страница 106: ...ntrolled 100KZ to Maintain Proper supply 15VDC 5VDC 5VDC G 8 NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual Return to Section TOC Return to Sect...

Страница 107: ...Off 12VDC Fan On Signal From Control PCB Signal Sent to Control Board When using 115V Input Solenoid Circuit present on TIG machines only G 9 NOTE This diagram is for reference only It may not be accu...

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