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Repair



Trouble shooting

Problem

Reasons

Measurements

1.Turn on the

machine,
current display
meter not on

1.Input power switch shut

or damage

2.Input power cable

connect not stable

1.Check the input power

switch, make sure the input
voltage correct

2.Check the connection,

ensure it is stable

2.Machine not

working,
overheat
indicator on

1.Overload

2.Cooling fan damage

3.Temperature sensor

damage

1.Wait the welding machine

cool down, the overheat
indicator off, machine can
work again

2.Replace the fan

3.Replace the temperature

sensor

3.Current

unstable

1.Current potentiometer

1.Replace the current

potentiometer

4.Bad cutting

quality

1.Air pressure too low

2.Work piece too thick

3. Electrode and nozzle

burnt

4.Plasma arc and work

price not vertical

5.Cutting speed too fast or

too slow

1.Check the air pump pressure

2.Work piece thickness should

within the machine cutting
capacity

3.Replace electrode and

nozzle

4.Adjust torch angle

5.Adjust the cutting speed

5.Electrode and

nozzle life is
short

1.Air pressure too low

2.Nozzle and work piece

short circuit

1.Check the air pump pressure

2.Short circuit arc strike

prohibited

Maintenance and repair

Содержание LGK-240P

Страница 1: ...LGK 240P INVERTER AIR PLASMA CUTTING MACHINE...

Страница 2: ...1 2 3 IP21S 4 5 A...

Страница 3: ...1...

Страница 4: ...2 3 4...

Страница 5: ...5 6 7...

Страница 6: ...8 1 2 3 4 5 9...

Страница 7: ...10 80...

Страница 8: ...1 4 4 4 5 7 8 8 9 11 12 12 13 14 1 15...

Страница 9: ...1...

Страница 10: ...2 60 10 6 4...

Страница 11: ...3 1 2 20 90 40 50 3 10 40 4 5 30cm 30cm 6 1000m...

Страница 12: ...4 L G K 2 40 P 40A 220V IGBT GB T 15579 1 2013 GB T8118 2010...

Страница 13: ...5 1 LGK 240P V Hz 1 220 15 50 60 kVA 7 5 A 33 8 A 25 40 V 253 mm 0 3 6 mm 10 60 40 75 5 0 68 IP21S F mm 440 320 356 kg 27...

Страница 14: ...6 2...

Страница 15: ...7 IGBT 40KHz PWM IGBT AC AC DC PI IGBT AC DC...

Страница 16: ...8 1 2 3 4 5 6 7 8 9 AC220 10 1 2 4 5 6 7 8 9 10 3...

Страница 17: ...9 1 2 3 4 1 2 3 4 IP21S 5 15 1...

Страница 18: ...10 6 6mm2 7 6mm2 8 9...

Страница 19: ...11 10 1 2 3 220VAC 220VAC...

Страница 20: ...12 6...

Страница 21: ...13 1 1 2 1 2 2 1 2 3 1 2 3 3 1 1 4 1 2 3 4 5 1 2 3 4 5 5 1 2 1 2...

Страница 22: ...14 1 1 2 1 3 1 4 1...

Страница 23: ...15 1...

Страница 24: ...LGK 240P INVERTER AIR PLASMA CUTTING MACHINE...

Страница 25: ...reeze the pipeline by the cutter 3 The shield rank of this series of cutter is IP21S so working in rain is not suitable 4 The cutter has external static characteristic with rated duty cycle 60 which m...

Страница 26: ...tric shock sometimes even fatal dangers Users need to follow the items below to avoid electric shocks If possible lay some insulating materials which are dry and large enough in your working field Oth...

Страница 27: ...loth to protect your skin from hurting by the arc rays Remind other nearby personnel before working lest arc rays hurt them by accident 3 Fumes and Gases Welding may produce fumes and gases hazardous...

Страница 28: ...e that there is no flammable or toxic gas Spatter might cause burn Wear leather gloves heavy shirt cuffless trousers high shoes and a cap over your hair to prevent from burning by spatter Wear the ear...

Страница 29: ...the equipment perfectly in accordance with the manufacturer s recommendations 7 Power For engine driven welding and cutting equipment Work in ventilated place or outdoors Do not add fuel near to fire...

Страница 30: ...e s health is not confirmed so it might have some negative effect to one s health Welders may use following method to reduce the hazardous of electromagnetic a Bundle the cable connected to the work p...

Страница 31: ...ne It is better to push the welding machine moving in use of its rollers unless special situations Be sure that the appurtenances are all removed off when lifting When lifting make sure that there is...

Страница 32: ...Safety warnings 1 Product Summary 4 Working Principle 7 Installation and Operation 9 Maintenance and repair 12 Packing list 15 Electric Diagram 16 Catalogue...

Страница 33: ...l person 4 Welding may produce fumes and gases hazardous to health Avoid breathing these fumes and gases While working in limited room use enough ventilation and or exhaust to keep fumes and gases awa...

Страница 34: ...confirmed so it might have some negative effect to one s health Welders should reduce the hazardous of electromagnetic 12 This Machine is with CC mode with rated duty cycle 30 that means machine worki...

Страница 35: ...cal sunshine and rain Air relative humidity is no more than 90 at 20 and no more than 50 at 40 When using air cooling torch the ambient temperature should be from 10 to 40 It should avoid metal foreig...

Страница 36: ...h success rate Current preset function can accuracy preset the cutting current stepless adjust Good characteristic with stable cutting current and arc stiffness with good cutting performance Widely us...

Страница 37: ...A 33 8 Cutting Current Adjust Range A 25 40 Rated Open Circuit Voltage V 253 Quality cutting thickness steel mm 0 3 6 Max cutting thickness steel mm 10 Rated Duty Cycle 60 40 Efficiency 75 5 Power Fa...

Страница 38: ...6 2 Cutting capacity Technical specifications...

Страница 39: ...cutting current is obtained Control circuit can control output current by controlling driven pulse width The real time cutting current which is obtained through current sensor connected to output ter...

Страница 40: ...utput Inductance filter DC Current sampling Negative feedback control circuit PI adjust control circuit IGBT drive circuit PWM circuit Current giving control circuit Input power AC Frequency rectify c...

Страница 41: ...cate the preset cutting current 4 Cutting current adjust knob adjust the cutting current 5 Gas electric output cutting current output terminal also for compressed air output terminal 6 Ground cable pl...

Страница 42: ...need long distance movement Installation and connection 10 Make sure the distribution switch is off before install the machine 11 Installation circumstance should suitable for the requirements 12 Ant...

Страница 43: ...bly with the ground cable must be 6mm2 17 Torch connection First stably connect the torch gas inlet screw with the electric gas output terminal then stably connect the torch control switch with the co...

Страница 44: ...he air flow reach the cutting requirements turn the switch to cutting position 4 3 Keep the nozzle on the vertical position of the work piece and suitable distance away from work piece cutting from th...

Страница 45: ...tock and work in the humid circumstance Make sure the blowhole not blocked when machine working Machine should work and stock in draughty circumstance Inspect all the connection s regularly Keep clean...

Страница 46: ...k again 2 Replace the fan 3 Replace the temperature sensor 3 Current unstable 1 Current potentiometer 1 Replace the current potentiometer 4 Bad cutting quality 1 Air pressure too low 2 Work piece too...

Страница 47: ...15 1 Cutting power source 1set 2 Ground cable 1pc 3 Cutting torch 1pc 4 Instruction manual guarantee card qualified card one for each Packing list...

Страница 48: ...16 Electric Diagram...

Страница 49: ...17...

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