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21

OPERATION

The PEAK AMPERAGE control ADJUSTS THE PEAK AMPER-
AGE FOR PULSE TIG WELDING. If the welding power source is
set at the 50% position, the PEAK AMPERAGE control will
provide (from it’s minimum to maximum adjustment) amperage
control of 50% of the welding power source output.

The scale surrounding the control is calibrated from 0 to 100
percent and should not be read as an amperage or voltage value.

THE PEAK AMPERAGE CONTROL MAY BE ADJUSTED
WHILE WELDING.

The BACKGROUND AMPERAGE control provides a means of
setting the weld output background amperage level. The back-
ground amperage is a percent-age of the peak amperage and can
never be set to a value higher than the peak amperage. Rotating
the control clockwise increases the background amperage.

The scale surrounding the control is calibrated from 0 to 100
percent and should not be read as an amperage or voltage value.

THE BACKGROUND AMPERAGE CONTROL MAY BE AD-
JUSTED WHILE WELDING.

The PULSES PER SECOND control provides a means of selecting
the pulse frequency (pulses per second) when the PULSER switch
in the ON position. Rotating the control clockwise increases the
pulse frequency.

The two scales surrounding the control are calibrated in pulses
per second. The inner scale is calibrated from 0.5 to 25 pulses per
second. The outer scale is calibrated from 10 to 500 pulses per
second. The desired scale is selected by pulse switch(6)(on panel).

THE PULSES PER SECOND CONTROL MAYBE ADJUSTED
WHILE WELDING.

The PERCENT ON TIME control provides a means of selecting
the pulse width. Rotating the control clockwise increases the peak
output time in relation to the entire pulse time as set on the
PULSER PER SECOND control.

The scale surrounding the control is calibrated from 15 to 85
percent and represents the peak output “on time” during one
pulse.

THE PERCENT ON TIME CONTROL MAY BE ADJUSTED
WHILE WELDING.

Placing the switch in the LOW position selects the 1-25 PULSE
PER SECOND range. Placing the switch in the HIGH position
selects the 20-500 PULSE PER SECOND range. Placing the
switch in the OFF position turns off the pulser control.

PEAK AMPERAGE

CONTROL(10)

NOTE

BACKGROUND

AMPERAGE

CONTROL(9)

NOTE

PULSES PER SECOND

CONTROL(8)

NOTE

PERCENT ON TIME

CONTROL(7)

NOTE

LOW/HIGH/OFF

SWITCH(6)

3.2 SLOPER AND PULSER CONTROLS (continued)

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Содержание 400 GTSW AC/DC

Страница 1: ...INVERTER ARC WELDER MODEL 400 GTSW AC DC CC TIG Stick TIG High Frequency Lift Start Operating Manual Manual No 0 2430 First Edition September 1994 ...

Страница 2: ......

Страница 3: ... Dynamics Corporation Industrial Park No 2 West Lebanon New Hampshire USA 03784 603 298 5711 Copyright 1994 Thermal Dynamics Corporation All rights reserved Reproduction of this work in whole or in part without written permission of the publisher is prohibited The publisher does not assume and hereby disclaims any liability to any party for any loss or damage caused by any error or omission in the...

Страница 4: ...e 2 2 1 Site Selection 3 2 2 Transporting Methods 4 2 3 Weld Output Connections 5 2 4 Shielding Gas Connections 8 2 5 Remote 14 Connections 9 2 6 Electrical Input Connections 10 3 1 Operator Controls 13 3 2 Sloper and Pulser Controls 19 3 3 Operating Precautions 22 3 4 Sequence of Operation 23 3 5 Electrode Preparation 26 3 6 Electrode Selection 27 4 1 General Maintenance 29 4 2 Troubleshooting Gu...

Страница 5: ...tego rized as follows An operation procedure or background information which requires additional emphasis or is helpful in efficient operation of the system A procedure which if not properly followed may cause damage to the equipment A procedure which if not properly followed may cause injury to the operator or others in the operating area NOTE CAUTION WARNING ...

Страница 6: ...ss or death can result from fumes vapors heat or oxygen enrichment or depletion that welding or cutting may produce Ventilation must be adequate to remove gases and fumes during operation as described in ANSI Standard Z49 1 Use a downdraft table or water table to capture fumes and gases Use an air supplied respirator if ventilation is not adequate to remove all fumes and gases When working in conf...

Страница 7: ... apparatus clean and free from oil and grease Oxygen cylinders and apparatus should not be handled with oily hands or gloves Do not allow an oxygen stream to contact oily or greasy surfaces Do not use oxygen as a substitute for compressed air NEVER ventilate with oxygen Generator engine exhaust must be vented to the outside air Carbon monoxide can kill ARC RAYS can injure eyes and burn skin Never ...

Страница 8: ... Welding Current Number Torch soldering 2 Torch brazing 3 or 4 Oxygen Cutting Light Under 1 in 25 mm 3 or 4 Medium 1 6 in 25 150 mm 4 or 5 Heavy Over 6 in 150 mm 5 or 6 Gas welding Light Under 1 8 in 3 mm 4 or 5 Medium 1 8 1 2 in 3 12 mm 5 or 6 Heavy Over 1 2 in 12 mm 6 or 8 Shielded metal arc welding stick electrodes Light Under 5 32 in 4 mm 10 Medium 5 32 1 4 in 4 6 4 mm 12 Heavy Over 1 4 in 6 4...

Страница 9: ...lly hot part or grounded metal reduces electrical resistance and could cause potentially fatal electric shock A voltage will exist between the electrode and any conducting object in the work circuit Examples of conducting objects in clude but are not limited to buildings electrical tools work benches welding power source cases workpieces etc Never touch electrode to any metal object unless the wel...

Страница 10: ...esistance equivalent to original cable Keep cables dry free of oil and grease and protected from hot metal and sparks Terminals and other exposed parts of electrical units should have insulating covers secured before operation For equipment with output ON OFF control contactor Weld ing power sources for use with gas metal arc welding GMAW gas tungsten arc welding GTAW and similar processes nor mal...

Страница 11: ...vers or shields Walls having combustibles on opposite sides should not be welded on or cut Walls ceilings and floor near work should be protected by heat resistant covers or shields A fire watch with suitable fire extinguishing equipment must be provided during and after welding or cutting if combustibles including building construction are within 35 ft 10 7 m if combustibles are further than 35 f...

Страница 12: ...ter work is done check that area is free of sparks glowing embers and flames Burn Prevention Wear protective clothing including gauntlet welding gloves hat and high safety toe shoes Button shirt collar to protect chest and neck button pocket flaps and wear cuffless trousers to avoid entry of sparks and slag Wear dark colored substantial long sleeve clothing particularly for gas shielded arc As nec...

Страница 13: ...inter does not move off stop pin when pressurized nor returns to stop pin after pressure release Do not attempt to repair faulty regulators Send to manufactur er s authorized repair center where special techniques and tools are used by trained personnel Cylinders must be handled carefully to prevent leaks and dam age to walls valves or safety devices Contact with electrical circuits including thir...

Страница 14: ... for hose not ordinary wire or other substitute as a binding to connect hoses to fittings Do not use copper tubing splices Use only standard brass fittings to splice hose Avoid long runs to prevent kinks and abuse Coil excess hose to prevent kinks and tangles Suspend hose off ground to protect from damage Protect hose from damage by sharp edges sparks slag excessive heat and open flame Examine hos...

Страница 15: ...eases slowly When gauge is pressurized gauge reaches regulator maximum open cylinder valve fully to seal stem against possible leak when using oxygen and inert gases For fuel gas open less than one turn to permit quick emergency shutoff Use pressure charts available from supplier for safe and effi cient recommended pressure settings on regulators Check for leaks on first pressurization and regular...

Страница 16: ...itute 1430 Broadway New York NY 10018 6 ANSI Standard Z49 2 FIRE PREVENTION IN THE USE OF CUTTING AND WELDING PROCESSES obtainable from American National Standards Institute 1430 Broadway New York NY 10018 7 AWS Standard A6 0 WELDING AND CUTTING CONTAIN ERS WHICH HAVE HELD COMBUSTIBLES obtainable from American Welding Society 550 N W LeJeune Rd Miami FL 33126 8 NFPA Standard 51 OXYGEN FUEL GAS SYS...

Страница 17: ...ing Supply Associa tion 1900 Arch Street Philadelphia PA 19103 14 American Welding Society Standard AWSF4 1 RECOM MENDED SAFE PRACTICES FOR THE PREPARATION FOR WELDING AND CUTTING OF CONTAINERS AND PIPING THAT HAVE HELD HAZARDOUS SUBSTANCES obtainable from the American Welding Society 550 N W LeJeune Rd Miami FL 33126 15 ANSI Standard Z88 2 PRACTICE FOR RESPIRATORY PROTECTION obtainable from Ameri...

Страница 18: ...all not except as expressly provided herein exceed the price of the goods upon which such liability is based THIS WARRANTY BECOMES INVALID IF REPLACEMENT PARTS OR ACCESSORIES ARE USED WHICH MAY IMPAIR THE SAFETY OR PERFORMANCE OF ANY THERMAL PRODUCT THIS WARRANTY IS INVALID IF THE PRODUCT IS SOLD BY NON AUTHORIZED PERSONS The limited warranty periods for Thermal products shall be as follows A maxi...

Страница 19: ...er source Curves of other set tings will fall between the curves shown Description NOTE Table 1 A Unit Specifications Input Data At Rated Load No Load 50 60 Hz Output Output Amps KVA KW Amps KVA KW 208 VAC 1 Phase 84 17 12 3 7 0 8 0 4 208 VAC 3 Phase 46 17 12 2 9 0 8 0 4 230 VAC 1 Phase 76 17 12 3 3 0 8 0 4 230 VAC 3 Phase 41 17 12 2 6 0 8 0 4 460 VAC 1 Phase 38 17 12 1 7 0 8 0 4 460 VAC 3 Phase 2...

Страница 20: ...four consecutive minutes but it must operate at no load for the remaining six minutes to allow proper cooling If the welding amperes decrease the duty cycle increases If the welding amperes are increased beyond rated output the duty cycle will decrease EXCEEDING DUTY CYCLE RATINGS will cause the thermal overload protection circuit to become energized and shut down output until the unit cools to no...

Страница 21: ...t FIRE OR EXPLOSION can result from placing unit on or over combustible surfaces RESTRICTED AIRFLOW can cause overheating and possible damage to internal parts Do not locate unit over combustible surfaces Maintain at least 3 inches 76 mm of space from sides of unit 6 inches 152 mm from rear and open unrestricted access to ambient air at front of unit Do not place any filtering device over the inta...

Страница 22: ...LLING EQUIPMENT can cause serious personal injury and equipment damage Do not hang unit from eyelets Have two persons of adequate physical strength lift unit Use hand cart or similar device of adequate capacity If using a fork lift vehicle place and secure unit on a proper skid before transporting This unit has two eyelets on top ends of case for lifting Be sure unit is lifted and transported safe...

Страница 23: ... the cable size recommended in Table 2 A for 50 feet 15 m 4 Do not use damaged or frayed cables 1 Install terminal lugs of adequate amperage capacity and correct stud size onto ends of cables that connect to the work clamp and electrode holder or torch 2 If installing electrode holder follow manufacturer s installa tion instructions Always use an insulated electrode holder to ensure operator safet...

Страница 24: ...plied sleeve on stripped end of cable 6 Insert cable with sleeve into connector body so that cable is snug and against bottom of connector body 7 Install and tighten set screw with supplied hex wrench to secure connector body onto cable 8 Push insulator onto connector body to cover set screw Connector Installation ELECTRIC SHOCK can kill ARCING can burn skin or damage electrical connections Do not...

Страница 25: ...hen Gas Tungsten Arc Welding in the AC mode a Connect end of electrode holder cable to the positive weld output receptacle as follows align keyway insert plug and rotate plug clockwise until it is securely seated in receptacle b Connect work cable connector to the negative weld output receptacle as follows align keyway insert plug and rotate plug clockwise until it is securely seated in receptacle...

Страница 26: ...te and connect a hose of suitable length and construction from the shielding gas supply to the GAS INPUT fitting on rear of unit 2 Connect the torch gas hose to the GAS OUTPUT fitting on front of unit The gas flow must be accurately controlled with a regulator and flowmeter Recommendations for rate of gas flow should be obtained from the torch manufacturer It is recommended to use a nylon or synfl...

Страница 27: ...o interface with REMOTE 14 receptacle Table 2 B Remote 14 Socket Information Figure 2 C Front View of 14 Pin Socket with Locations Socket A Remote solid state contactor control when contact closure is provided between Sockets A and B Socket B Remote solid state contactor control when contact closure is provided between Sockets A and B to energize the solid state contactor Socket C Remote amperage ...

Страница 28: ...hase or single phase if derated 50 60 Hz AC power supply The input voltage must match one of the electrical input voltages shown on the input data label on the unit nameplate Contact the local electric utility for information about the type of electrical service avail able how proper connections should be made and inspection required The line disconnect switch provides a safe and convenient means ...

Страница 29: ...ors to a deenergized line disconnect switch 3 For single phase electrical input power connect ends of red line 1 white line 2 input conductors to a de energized line disconnect switch Insulate and isolate the black line 3 conductor 4 Use Table 2 C below as a guide to select line fuses for the disconnect switch 2 6 ELECTRICAL INPUT CONNECTIONS continued INPUT INPUT FUSE SIZE POWER VOLTAGE AMPERES S...

Страница 30: ...ns and Components The input voltage must match one of the electrical input voltages shown on the input data label on the unit nameplate This power source incorporates the Smart Link circuit which automatically links the power source to primary input voltage and adjusts it to allow for operation of unit within input rating on data tag It is not necessary to manually switch terminals or links if uni...

Страница 31: ...AGE 0 3 2 4 6 8 10S 0 3 2 6 10S 0 20 80 40 60 100 INITIAL AMPERAGE 0 20 40 60 80 100 ON TIME L H PULSE PER SECOND PEAK AMPERAGE 15 30 50 70 0 20 80 40 60 100 BACKGROUND AMPERAGE 0 20 40 60 80 100 SLOPER PULSER OFF ON OFF LOW HIGH 8 4 85 0 20 40 60 1 0 0 30 0 5 0 0 1 2 3 5 10 2 5 2 1 8 9 10 11 12 13 14 7 6 5 4 3 Primary Power Switch Controls Behind Access Door A 00327 3 1 OPERATOR CONTROLS 8 DIGITA...

Страница 32: ... source Rotating this control in a clockwise direction increases the amperage output The scale surrounding the AMPERAGE control is calibrated in actual amperage values The AMPERAGE control may be adjusted while welding The ARC CONTROL provides a variable selection of short circuit amperage to suit individual welding situations when operating in the STICK Welding SMAW mode Rotating this control clo...

Страница 33: ...ds Rotating the control clockwise increases postflow time The POSTFLOW TIME control and gas valve only work if the Process Selector switch is in one of the Gas Tungsten Arc Weld ing positions the OUTPUT CONTACTOR switch is in the RE MOTE position and a remote control is connected to the RE MOTE 14 receptacle The PREFLOW TIME control only works if the PROCESS SELEC TOR switch is in the LIFT TIG or ...

Страница 34: ...process the LIFT TIG GTAW process without high frequency and the HF TIG GTAW process with high frequency start only The unit will provide weld output for the Shielded Metal Arc Welding SMAW process When the Process Selector switch is in this position the ARC CONTROL will function and the POSTFLOW TIME control will not function The unit will provide weld output for the Gas Tungsten Arc Welding GTAW...

Страница 35: ...aximum output the maximum output available from the remote control will be half the welding power source maximum output ELECTRIC SHOCK CAN KILL Do not touch live electrical parts Do not touch the weld output receptacles when the contactor is energized Do not touch electrode and work clamp at the same time If the OUTPUT CONTACTOR switch is in the ON position open circuit voltage will be present at ...

Страница 36: ...utput frequency is 60 Hz The frequency can be adjusted from 20 to 100 Hz The LED meter displays either an amperage or voltage value The selected preview amperage value is displayed when welding is not taking place The meter is not intended for exact amperage CC or voltage measurements The amperage display indicates amperage output of the welding power source and is driven by circuitry on control b...

Страница 37: ...gizes the sloper con trols Placing the switch in the OFF position turns off the sloper controls When the sloper switch is in the ON position the output current control on the front panel of the welding power source is invalid Initial Amperage Control 4 allows the desired starting current to be set from which upslope will begin Adjustable for the full range of the power supply Final Amperage contro...

Страница 38: ...ond switch func tion to the existing sequence of Operation USE PIN B PIN M FOR REPEAT FUNTION To use the repeat function start the Slope sequence as normal Maintaining the REMOTE switch CONNECTED TO PINS A B OF THE 14 PIN RECPT in the closed posistion starts the se quence for initial current setting Opening the REMOTE switch contacts will start the upslope sequence to weld current and will stay in...

Страница 39: ... when the PULSER switch in the ON position Rotating the control clockwise increases the pulse frequency The two scales surrounding the control are calibrated in pulses per second The inner scale is calibrated from 0 5 to 25 pulses per second The outer scale is calibrated from 10 to 500 pulses per second The desired scale is selected by pulse switch 6 on panel THE PULSES PER SECOND CONTROL MAYBE AD...

Страница 40: ...SURFACES can burn eyes and skin NOISE can damage hearing Wear correct eye ear and body protection FUMES AND GASES can seriously harm your health Keep your head out of the fumes Ventilate to keep from breathing fumes and gases If ventilation is inadequate use approved breathing device HOT METAL SPATTER AND SLAG can cause fire and burns Watch for fire Keep a fire extinguisher nearby and know how to ...

Страница 41: ...operation see section 3 9 Place AMPERAGE CONTROL switch in desired position see section 3 10 Rotate AMPERAGE CONTROL to desired position see section 3 11 Rotate POSTFLOW TIME CONTROL to desired position see section 3 12 Rotate PREFLOW TIME CONTROL to desired position see section 3 13 Rotate HOT START CONTROL to desired position see section 3 14 Turn on shielding gas and water supplies as applicabl...

Страница 42: ...UND AMPERAGE control in the desired position 11 Place the PULSES PER SECOND control in the desired position 12 Place the ON TIME control in the desired position 13 Place the AMPERAGE switch in the desired position 14 Place the OUTPUT CONTACTOR switch in the desired position 15 Place the PULSER switch in the ON position 16 Turn on shielding gas and water supplies as applicable 17 Wear welding helme...

Страница 43: ...AC OR DC OPERATION 8 If remote amperage control is not used place the AMPER AGE Control switch in the PANEL position If remote amperage control is to be used place the AMPERAGE Control switch in the REMOTE 14 position 9 Rotate AMPERAGE control or remoted amperage control if applicable to desired position see Section 3 10 Rotate ARC CONTROL to desired position see Section 3 11 Wear welding helmet w...

Страница 44: ... used on tungsten in the AC mode when the CLEANING balance control is set at 20 or less Grind the end of the tungsten electrode to a taper for a distance of 2 to 2 1 2 electrode diameter in length HOT FLYING METAL PARTICALS CAN INJURE PERSONNEL START FIRES AND DAMAGE EQUIPMENT HIGH CONCENTRATION OF SHIELDING GAS can harm health or kill Shut off gas supply when not in use Ground to a Point Ground R...

Страница 45: ...30 1 8 in 3 18 mm 225 360 25 40 5 32 in 3 97 mm 360 450 40 55 3 16 in 4 76 mm 450 720 55 80 1 4 in 6 35 mm 720 950 80 125 2 THORIUM ALLOYED TUNGSTEN RED BAND 010 in 0 25 mm 1 25 020 in 0 51 mm 15 40 040 in 1 02 mm 25 85 1 16 in 1 59 mm 50 160 10 20 3 32 in 2 38 mm 135 235 15 30 1 8 in 3 18 mm 250 400 25 40 5 32 in 3 97 mm 400 500 40 55 3 16 in 4 76 mm 500 750 55 80 1 4 in 6 35 mm 750 1000 80 125 3...

Страница 46: ...OPERATION 28 NOTES ...

Страница 47: ...g environment To clean the unit first make sure that the power is disconnected Blow out any accumulated dirt and dust with compressed air The unit should also be wiped clean If necessary solvents that are recommended for cleaning electrical apparatus may be used Inspect all external wiring on the unit Look for any frayed wires or loose connections that should be corrected Routine Maintenance ...

Страница 48: ... have had training in power electronics measurement and trouble shooting techniques This manual covers a basic level of troubleshooting that requires limited dissasembly and measurements It is helpful for solving many of the common problems that can arise with the Inverter Arc Welder system If major complex subassemblies are faulty the unit must be returned to an authorized service center for repa...

Страница 49: ...heck and replace line fuse s 3 Improper electrical input connections a See Installation section pages 3 14 for proper input connections 4 Primary power switch MCB in OFF position a Check and reset MCB if necessary B No weld output fan motor running and AC POWER indicator on 1 OUTPUT CONTACTOR switch S2 in REMOTE 14 position no remote contactor control connected to REMOTE 14 receptacle a Place S2 i...

Страница 50: ...E 14 receptacle 2 Remote control defective a Replace with known good device E Wandering arc poor control of arc direction 1 Use of tungsten considerably larger than recommended a Use proper size tungsten Refer toSection 3 5 2 Improperly prepared tungsten a Prepare tungsten 3 Gas flow rate too high a Reduce flow rate 4 Drafts blowing shielding gas away from tungsten electrode a Shield weld zone fro...

Страница 51: ...efer to torch parts list for part s requiring replacement and repair torch as necessary G Lack of high frequency difficulty establishing an arc 1 Dissipation of high frequency from torch cable or conductive gas hose a Be sure that torch cable is not near any grounded metal Do not use conductive gas hose 2 Weld cable leakage a Check cables and torch for cracked or deteriorated insulation or bad con...

Страница 52: ... Fuse 5A 600V X X X 10 2206 F2 F3 Fuse 2A 250V X X X 10 2196 S1 S2 S3 Switch 1P3T X X X 10 2124 VR1 10K Pot X X X 10 2618 VR2 10K Pot X X X 10 2135 CON1 14 Pin Receptacle X X X 10 2133 CON2 17 Pin Receptacle X X X 10 2227 TO Output Terminal X X X 10 2202 Case Left Right Side X X X 4 3 REPACEMENT PARTS ...

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