The Rated Duty Cycle
Contents
1. Rated Input Current A 27 6 48 4 Maximal Effective Input Current A 14 2 19 6 34 4 51 No load Voltage V DC49V DC52V DC64V DC75V Output Current A DC50 315A DC50 350A DC60 500A DC80 630A Output voltage V Diameter of Wire Electrode mm DC16 30V Mild Steel solid wire 00 8 G 1 0 1 2 Flux cored wire 01 2 DC15 36V DC16 44V DC17 44v Mild Steel solid wire 1 2 O1 4 01 6 Flux cored wire 1 2 1 4 1 6 Insulation Degree Cover Protection Degree IP21S Exterior Dimension mm 740x410x770 840x460x810 Weight kg 105 132 172 220 4 The Rated Duty Cycle About Rated duty cycle Please use under rated duty cycle or it may cause harm to the welding machine N Note i The rated duty cycles are shown as followed NBC 350R 350A 50 NBC 500R 500A 50 NBC 630R 630A 50 For example If rated duty cycle is 30 it means that setting 10 minutes as one cycle the machine can continuously run for 3 minutes at rated current then stops for 7 minutes If the machine is used over rated duty cycle It could cause thermal overload and damage the machine e Please operate under rated duty cycle and the corresponding welding current according to the drawing on the right e Owing to limitation of the rated duty cycle of welding torch and other spare parts pl2. O FENGHUO SCR SEMI AUTO MIG MAG GAS SHIELDED WELDER FENGHUO AUTO NBR 250 NBC R SERIES 630 MANUAL INSTRUCTION lt Thank you for choosing FENGHUO lt Please read carefully before operating the equipment lt Please restore this manual for checking Guangzhou FENGHUO Industrial Co Ltd 9 Directory GENERAL SAFETY SPECIFICATIONS ABOUT RATED DUTY CYCLE INSTALLATION NAME AND FUNCTION WELDING OPERATION APPLICATION ENGINERY MAINTENANCE amp EXAMINATION 10 ELECTRIC CIRCUIT DRAWING 11 PARTS LIST 12 WHOLE SETS 13 AFTER SALES 1 GENERAL NBC R series SCR controlled MIG MAG semi auto arc welding machine 1 Outstanding craftsmanship and performance eAdopting imported elements for the main which provides outstanding quality eNew model appearance enhances the dust defending capacity which enlarges the available scopes of welding machine eBecause working current and voltage can be adjusted respectively unified both tenderfoots and practicians can use it with facility eArc extinguishing makes it possible to get elegant shape of seam 2 Main characteristic eMain transformer supplies simple and steady voltage for in phase circuit eOutstanding capacity against power fluctuation eWith no load energy saving function After released welding torch switch for 2 minutes AC contactor would break off automatically to save energy usage eF TT is offered Wire feeding w
3. meter shows welding voltage 83 Wire feeder fuse Switch for selecting the diameter of wire electrode Power fuse installed in controlling circuit used for protecting power source Regulator of arc extinguishing current switch on the arc extinguish and regulate the arc extinguishing current Regulator of arc extinguishing voltage switch on the arc extinguish and regulate the arc extinguishing voltage note If the welder was set to unified mode this switch could be as a micro adjuster of arc extinguishing current Since welding specification has some infection with welding position kind of wire electrode and length of lengthened cable the welding voltage would not be suitable even though the regulator was set at standard for unified regulating If so you can left turn the regulator to get lower voltage and right turn to get higher voltage 13 Switch for arc extinguishing selection Yes No 6 Name and Function Continuous Switch of gas checking Switch of wire electrode selection choose the kind of wire electrode according to your need flux cored wire or solid wire Power switch switch on and off the power 12 Power source of indicator light he thermal overload indicator light If the rated duty cycle and rated output power are overloaded or the temperature inside welder exceeds rated requirement the temperature controller would start working which results in
4. or damaged cable Do not use the cable with bared wiring 5 Disconnect input power or stop engine at least for 5 minutes before installing or servicing this equipment 6 Properly install and ground this equipment according to its user s manual 7 Clearly verify the supply ground check and be sure that input power ground cable is properly connected to ground terminal in disconnect box and that cord plug is connected to a properly grounded receptacle outlet 8 Do not remove any panel or cover when working 9 Use safety and qualified electric network when working in high altitudes 10 Do not touch electrode if you are physically contact with the work piece ground or other electrode from other machine 11 Keep ground clamp from other metal when not connected to work piece 5 12 Use well maintained equipment repair and replace parts once damaged 13 Turn off the machine when not in use NOTE FUMES AND GASES CAN BE HAZARDOUS Ventilate the fumed area by exhaust or use respirator to prevent hazardous Wear air supply respirator when working inside container boiler or ship button as CO2 and Argon are heavier than air it is danger in these surroundings Wear air supply respirator if welding plated or coated steel Do not weld in locations near degreasing cleaning or spraying NOTE ARC RAYS CAN BURN EYES AND SKIN 1 Wear a welding helmet with proper shade of filter to protect your face and eyes when welding or watchi
5. pick off cover 4 Fix the Connect the input cable 3pcs ey cover well to the auto switch of distributing box or to the circuit breaker without fuse or electric leak protection device Input end Te Dax 2Connect input cable 3pces with the 3 phase AC 380V input end 3 Twine the nudity position for electric with insulation line Inputcable pcs 6 Ground cable NBC 250R NBC 350R NBC 500R NBC 630R gt 4mm Kp udihg se cale with diameter Ensure to set a switch device with fuse or Cauti eee current breaker without fuse supply for motor gt lt Please set a switch device with fuse or current breaker without fuse on the power supply of welder The capacity of power source fuse and curent breaker are followed NBC 250R NBC 350R NBC 500R NBC 630R Capacity of power 9 7above 18 1above 31 9above 47 3above source KVA Commend capacity of 20 30 50 75 fuse and camen breake A D model Supply for eectic machine The parts withXare supplied by yourself Pi ase use the c trent breaker which supplied for the motor 10 D Installation and Connection Continuous 3 Connection of power output cable for work piece and weldingtorch 1 Switch off the power p supply OX 2 Remove the two nails 5 Joint the welding wir from cover of wire feeding and tl terminal toge the with auxiliary bolt __ Coverage 7 of teRinal 3 Ov
6. recti the adjustmen bolt NBC 250 350R have no Confirm the 1 Wire mount ing electrode Wheel of wire feedis cincide ZIN with the diamete JRectificat Yonof wire wheel Loc k nut Adjustment bolt Wheel of wire feeding 5 Loose the ad justment bolt and move it from fi xed mount of spool Fit the wire electrode to the spool of wire feeding the spool run with clockwise 7S crew the lock nut down 8Pick off the anti loosing device for wire long the verge of the spool caution the electrode could release by spring Adjust the plus pressure nut and press i 1 according to the diameter of electrode 16 7 Welding Operation Continuous 2 Welding operation without contracting arc sync operation with the switch of welding torch This welding is main suitable for repeated position and instantaneous welding thinplate jointing Sequential operation Turn the switch of contracting arc to the position of without contracting arc turn on off the switch of welding torch the welding arc come into be disappearing he process of produce weld ing arjc Stop the welding arc Switch on the welding torch Switch off the welding torch Picture about work time Switch of On OFF welding torch 7 ON L ORF Gas supply J Feed slowly Wire feeding Retrace Welding voltage ime Welding current Adjustment of we d i ng Regulator of remote controller qualification Taf Gas pre flow
7. things that can not do gt Identifiers refer to the normal situations Safety Cautions Continuous lt gt Danger To prevent the hazard please follow the directions below Read carefully before using 1 Many safety factors are considered when designing the machine so please comply with this manual instruction when operating 2 Make sure the power supply working location setting high pressure gas usage and storage as well as welding piece storage are complied with related regulations and you company s internal standard 3 Do not allow other people to enter working area 4 People who use heart pacemaker do not approach to working welding machines unless with grant from doctors As the magnetism surrounding the machine could cause side effects 5 Highly recommend to hire professionals to install and maintain 6 For your safety please read this instruction thoroughly and operate with professional or people with welding knowledge 7 Do not use welding machine for any other purpose 8 Strictly forbid using welding power to the thaw of conduit DANGER ELECTRIC SHOCK CAN KILL 1 Do not touch live electrical parts 2 Be insulated from work and ground using dry insulation mats or covers big enough to prevent any physical contact with the work and ground Wear dry hole free insulation gloves and body protection 3 Before connecting the cables please make sure they are insulated 4 Do not use undersized worn
8. ease consult to minimum rated duty cycle for using a 9A0 Anp pej es SUL a 0A9 Ainp p OYL a OA0 Aynp payed Oy 100 247A below 100 50 The range of welding current for NBC 350R 2 0 50 50 150 350 Welding current A 100 354A below 100 i The range of welding 50 current for NBC 500R 0 200 300 400 500 Welding current A 100 445A below 100 The range of welding current for NBC 630R 50 0 300 500 200 400 630 Welding current A 5 Installation and Connection 1 Function and Installation MEE Outfit b y yo urslfe Input cabl groun dir 1 2 5mm ab ov He aterca ble Welding po 250 350 NBC 599 R 630 Contolling ca ble e feeding Cab le for work piece Output cable SS Workpiece 7v grounding l4mm above p fo Welding torch Distrib uting b ox AC 380v 3p hase _ Airflow Gas Gaspipe bottle Standard Equipment Welding power Wire Welding torch feeder NBC250R SJ 25R QTB 200K NBC 350R SJ 35R QTB 350K NBC 500R SJ 50R QTB 500K NBC 630R SJ 63R QTB600K 5 Installation and Connection Continuous 2 Connection of grounding input end of power source To avoid electric shooting or other accident please obey the rules as follow J To ensure safety the connection of electric is allowed after switch off distributing box Don t touch with wet T Loosen nails both left and rihgt for a screw
9. erturn the cover above connect the Controlling cable for wire feed the socket 6chip according to the The picture on right whi le fini shed Connection of output bring the cover to its own position 4 Use auxiliary bolt to joint one end of cable for work piece and teminal together 7 Connect the other end 7 mine of cable for work piece with work piece Twine the nudity 6 position for electric with insulation plast belt l Cable 1 Por work piece p Hoop nut Use cable which with a diameter bigger than 14mm to grounding Insert in the gu iding trough gt correctly and faehre i the hop figured fastener Connect to terminal of power source Welding gt rebec trode Z Gas pipe ire feeding ONS eee Fastening me X screw A Conner Se OA ce terminal for amp c2 lt E l NS oY Set screw Insert in the guiding trough Confirm correctly and tighten the hoop fasteness figured fastener m circum gyrate 11 5 Installation and Connection Continuous 4 Picture of connect gas bottle and gas regulator with power source DFit gas regulator on gas bottle with mounting CA U T l 0 N nuts use clybum wrench to screw them down ONLY FOR HEATER OF nh GAS REGULATOR USE a Gas Mounting Ay bottle Gas regulator AUse cable with section abovel 25mm for grounding 2 Link gas pipe with the junction of gas regulator s gas pipe use
10. hoop lt Y gullet of accessories to fix up i SSN Socket Insert heater cable _ S7 for air to the socket Haai regulator Notice The quality of gas could make a constructive effect to welding impression pls note When use COwelding you d better use Co for welding hen use MAG welding you d better use the mixed gas argon with5 20 C02 for welding When use mixed gas CO2and argon pls use a gas mixer to avoid incomplete mix ing Argon for mixing pls choose high purity wel ding argon pureness 99 9 above 5 Noteofinstallation Place the welding power prevent from direct shine of sun rainning and with less wet and dust Install a welder away from wall and other welders at least 300M Fit the gas bottle to its special shelf If the welding power was placed on a inclined plane pls forestall it topple over the slop up inclination angle of incline plane and horizontal level lt 10 Dor t put any heavy on the welder Don t plug the intake of welder up Brake the wheel of welder after set the welder well 12 6 Name and Function 1 The front panel 1 2 3 4 5 Wire feeder Power 15A 5A Diameter of wire electrode 0 8 Abn 1 0 O O Dea Regulate to Regulate to contract contract Arc arc currenizz arc vorktage contraction Gas fag oro aes 7 Yeg s core D id Solid ofi Wire On Welding core DO 00O W W wW Ampere meter shows welding current Voltage
11. ng Wear approved safety glasses with side shields under your helmet Wear oil free protective garments such as leather gloves heavy shirt leather apron and high shoes NOTE BECAREFUL Do not approach you hand hair or clothes close to the fan Dust can cause insulation worn out please test and maintain every month Highly recommend to use dry fan to clean equipment inside a 1 2 Ol SL a cd Keep yourself from flying sparks and hot work piece Connect work cable to the work piece as close to welding area as practical to prevent welding current from traveling long possibly unknown paths and causing electric shock and fire Do not weld on container with flammable material Do not weld on closed containers such as tanks drums or pipes which can cause blow up Make sure there is no flammable material or gas in working place Keep welded work pieces from any flammable Before welding the ceiling ground or wall clear up all flammable behind them Always store fire extinguishers in working place Please clear up work place to prevent spatter and other powder entering power source which can cause fire hazard 3 Technical Specifications Style Parameters NBC 250R NBC 350R NBC 500R NBC 630R Rated Input Voltage Phase AC380V 3Phase Frequency HZ SOHZ Rated Input Capacity KVA 14 0KVA 18 1 KVA 31 9 KVA 47 3 KVA Rated Duty Cycle 50
12. of the positio nof elding e distributing box Distrib uting box 3 2 switc hon the power supply 4 open the cover of gas bottle Airflow metre Primary pressure Gas adjuste 6 slo wly switch the knob of airflux adjustment toward the 4 pen ay until got the number youneed nt teminal COPEN Knob of air fluxad justm Gas bottle Press on the spot switch could begin wire gt B 5 y 7C feeding and don t loose until there is J rj 15 20mm wire out from the top of torch B2 4 X The wire electrode with thin 4 g Caution Switch of spot diameter 0 8 is easy to break off controlling so please feed the wire slowly 15 7 Welding Operation Continuous 1 3 Setting of wire electrode are fitted to 1 6 NBC 500R 630 R r use 0 8 eL The number showed on the wh 1 of wire feeding is the best suitable diameter for wire electrode Gland arm nut Ce mounting accessories Locating hole of wire electrode Is Handle bolt Wire electrode Baffler of wire spool Rectifiica tion wheel C Pull wire out and insert it into the CC socket through the rectification wheel the wire onidi no tronoh nf NRCIRNR 25NR 3 Lift it up NBC 250R 350R Restore the gland arm and plus pressure nut in turn i loTipof i liner spr ing Gland art j a NBC 500R 630R 5 v4 loose the loc nut and
13. ould stop ahead of welding current which eliminates melting ball at the end tip of wire and would be propitious to next arc ignition e Excellent arc ignition capacity high voltage and slow wire feeding speed assure the welding machine with excellent are ignition capacity e Preset function could server the purpose of MAG welding welding with aluminum electrode 2 Safety Cautions For your safety please operate according to the following rules and read this manual thoroughly identifiers warning contents Mis operation may lead user to extremely danger situation D Extremely may cause user or others Grievous Bodily Harm even death Y danger Mis operation may lead user to danger situation may cause Danger user Grievous Bodily Harm even death Mis operation may lead user to danger situation may cause Note harms to the user and others A lt The identifier of Note refers to normal situation lt Grievous Bodily Harm refers to ablepsia trauma scald electric shock fracture toxicosis etc which may cause operations and sequelae Loss in material refers to damnification of property caused by damage of machine Further more during the operation there are some identifiers indicating some compelled actions and forbidden actions compelled actions The preparation actions such as connecting the ground cable forbidden actions The actions and
14. the working of thermal overload indicator light 2 The remote controller Manul switch of wire feeding t is include current and voltage Switch it on could begin wire feeding The speed 2gulation and unified regulation of wire feed is realized by regulate the welding jen vou regulate unified swithing current The diameter of wire is so thin and easy ee to break off Pls slowly regulate It could only the ee feed wire out could t receding ais panel Bolt wei ii we wil mE oo the panel Regulator of Regulator of welding voltage welding current Could regulate welding current Note when the welder was selected Could regulate welding voltage Ifthe w elder was selected unified mode this switch could be asa micro adjuster of c ontracing arc current Owingto the spec ification unified mode the voltage could doa of welding has related to welding position kind of wire electrode and self adjusted to a suitable according lengthened cable length That ca use sometimes the knobw as onthe the current It is called unified standard position b ut the unified welding voltage wasnot suitable In regulation that situation y ou could use thisregulatortofine control 14 7 Welding Operation 1 Ready for welding operation 1 1 Switch operation and the adjustment of air flux the position of ihecking 3 Turn the switch of gassupplyon 6 Turn the switch of gas sup ply on 1 Turnon the switch
15. thout set it under the condition of no air pre f lowing Set with ene set it under the condition of air pre f lowing 0 6s 1 2 Switching terminal SW6 the qualification of primary contracting arc is attached factory adjusted without Setting of Weee there is a same output between the qualification of primary welding and contracting arc welding Precondit id The switch of contracting arc was on the position of with l 3 Switching terminal SW10 unified normal factory adjusted normal Set normale separate set current and voltage on noemal Set unified It could be set by adjust suitable current and voltage on the output adjuster of the remote control ler In the process of using special wire electrode or flux cored wire owing to they have different kind and quality saretimes it is hard to realize by unified of stable welding condition Although adjust it through the knob of welding voltage adjuster You should do this The welding voltage could ke set free after switching the setting to normal the regulation range could enlarge by it Or make it meet ing your need by adjust Vr8 of P board 1 4 Switching terminal Sw11 FTT controlling with without factory adjusted without set without have no FTT controlling set with have FTT controlling 19
16. time the moment of arc bring the time of arc d sappear 17 7 Welding Operation Continuous 3 Weldin operation with contracting arc self lock and contracting arc This welding is main use to fill the sunken up fill after finish welding and suitable for median or thick plate jointing Sequential operation Turn the switch of contrating arc to the position of with contracting arc Successively two times for switching on off welding torch to begin finish welding The welding arc Retain the Switching to The welding arc come into being welding arc contrac te arc disappear J Press on the switch Loose iesita Pregs on the switch Loose the switch of welding torch f idi t elding torch again of welding torch ON Ghia is DNE MORE ON ONE MORE OFF Picture about work time Switch of i ON l ieee C welding torc tat ON OFF Wire feeding i Ret race Welding voltag yine Welding current Adjuster of eee Adjustment of welding emote controller de ad insga qualification Taf gas pre flow time the moment of arc biting the time of arc disdppear Showed as above the welder could self lock by operate on the switch of wel When finish welding the current decreased the welder could contracted ar 18 8 Application enginery 1 The switching of all switches on the marking PCB 1 1 Switching terminal Sw4 air pre fl ow with without factory ad justed wi thout Set wi
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