VEVOR CT-312 Plasma Cutter Welder Machine Instruction Manual

VEVOR CT-312 Plasma Cutter Welder Machine

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This is the original instruction, please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of our user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won’t inform you again if there are any technology or software updates on our product.

MACHINE OPERATING SAFETY

• Do not switch the function modes while the machine is operating. Switching of the function modes during welding can damage the machine. Damage caused in this manner will not be covered under warranty.

• Disconnect the electrode-holder cable from the machine before switching on the machine, to avoid arcing should the electrode be in contact with the work piece.

• Operators should be trained and or qualified.
  Electric shock: It can kill. Touching live electrical parts can cause fatal shocks or severe burns. The electrode and work circuit is electrically live whenever the output is on. The input power circuit and internal machine circuits are also live when power is on. In MIG/MAG welding, the wire, drive rollers, wire feed housing, and all metal parts touching the welding wire are electrically live. Incorrectly installed or improperly grounded equipment is dangerous.

• Connect the primary input cable according to America standards and regulations.

• Avoid all contact with live electrical parts of the welding/cutting circuit, electrodes and wires with bare hands.

• The operator must wear dry welding gloves while he/she performs the welding/cutting task.

• The operator should keep the work piece insulated from himself/herself.

• Keep cords dry, free of oil and grease, and protected from hot metal and sparks.

• Frequently inspect input power cable for wear and tear, replace the cable immediately if damaged, bare wiring is dangerous and can kill.

• Do not use damaged, under sized, or badly joined cables.

• Do not drape cables over your body.

• We recommend (RCD) safety switch is used with this equipment to detect any leakage of current to earth.
  Fumes and gases are dangerous. Smoke and gas generated whilst welding or cutting can be harmful to people’s health.
  Welding produces fumes and gases. Breathing these fumes and gases can be hazardous to your health. Do not breathe the smoke and gas generated whilst welding or cutting, keep your head out of the fumes.

• Keep the working area well ventilated, use fume extraction or ventilation to remove welding/cutting fumes and gases.

• In confined or heavy fume environments always wear an approved air-supplied respirator.

• Welding/cutting fumes and gases can displace air and lower the oxygen level causing injury or death. Be sure the breathing air is safe.

• Do not weld/cut in locations near de-greasing, cleaning, or spraying operations. The heat and rays of the arc can react with vapours to form highly toxic and irritating gases.

• Materials such as galvanized, lead, or cadmium plated steel, containing elements that can give off toxic fumes when welded/cut. Do not weld/cut these materials unless the area is very well ventilated, and or wearing an air supplied respirator.
  Arc rays : harmful to people’s eyes and skin. Arc rays from the welding/cutting process produce intense visible and invisible ultraviolet and infrared rays that can burn eyes and skin. Always wear a welding helmet with correct shade of filter lens and suitable protective clothing including welding gloves whilst the welding/cutting operation is performed.

• Measures should be taken to protect people in or near the surrounding working area. Use protective screens or barriers to protect others from flash, glare and sparks; warn others not to watch the arc.
  Fire hazard. Welding/cutting on closed containers, such as tanks, drums, or pipes, can cause them to explode. Flying sparks from the welding/cutting arc, hot work piece, and hot equipment can cause fires and burns. Accidental contact of electrode to metal objects can cause sparks, explosion, overheating, or fire. Check and be sure the area is safe before doing any welding/cutting.

• The welding/cutting sparks & spatter may cause fire, therefore remove any flammable materials well away from the working area. Cover flammable materials and containers with approved covers if unable to be moved from the welding/cutting area.

• Do not weld/cut on closed containers such as tanks, drums, or pipes, unless they are properly prepared according to the required Safety Standards to insure that flammable or toxic vapours and substances are totally removed, these can cause an explosion even though the vessel has been “cleaned”. Vent hollow castings or containers before heating, cutting or welding. They may explode.

• Do not weld/cut where the atmosphere may contain flammable dust, gas, or liquid vapours (such as petrol)

• Have a fire extinguisher nearby and know how to use it. Be alert that welding/cutting sparks and hot materials from welding/cutting can easily go through small cracks and openings to adjacent areas. Be aware that welding/cutting on a ceiling, floor, bulkhead, or partition can cause fire on the hidden side.
  Gas Cylinders. Shielding gas cylinders contain gas under high pressure. If damaged, a cylinder can explode. Because gas cylinders are normally part of the welding/cutting process, be sure to treat them carefully. CYLINDERS can explode if damaged.

• Protect gas cylinders from excessive heat, mechanical shocks, physical damage, slag, open flames, sparks, and arcs.

• Insure cylinders are held secure and upright to prevent tipping or falling over.

• Never allow the welding/cutting electrode or earth clamp to touch the gas cylinder, do not drape welding cables over the cylinder.

• Never weld/cut on a pressurised gas cylinder, it will explode and kill you.

• Open the cylinder valve slowly and turn your face away from the cylinder outlet valve and gas regulator.
  Gas build up. The build up of gas can causes a toxic environment, deplete the oxygen content in the air resulting in death or injury. Many gases use in welding/cutting are invisible and odourless.

• Shut off shielding gas supply when not in use.

• Always ventilate confined spaces or use approved air-supplied respirator.
  Electronic magnetic fields. MAGNETIC FIELDS can affect Implanted Medical Devices.

• Wearers of Pacemakers and other Implanted Medical Devices should keep away.

• Implanted Medical Device wearers should consult their doctor and the device manufacturer before going near any electric welding, cutting or heating operation.
  Noise can damage hearing. Noise from some processes or equipment can damage hearing.

• Wear approved ear protection if noise level is high.
  Hot parts. Items being welded/cut generate and hold high heat and can cause severe burns.
  Do not touch hot parts with bare hands. Allow a cooling period before working on the welding/cutting gun. Use insulated welding gloves and clothing to handle hot parts and prevent burns.

CAUTION

Working Environment.

1. The environment in which this welding/cutting equipment is installed must be free of grinding dust, corrosive chemicals, flammable gas or materials etc, and at no more than maximum of 80% humidity.
2. When using the machine outdoors protect the machine from direct sun light, rain water and snow etc; the temperature of working environment should be maintained within -10°C to +40°C.
3. Keep this equipment 30cm distant from the wall.
4. Ensure the working environment is well ventilated.

Safety Tips.

1. Ventilation
   This equipment is small-sized, compact in structure, and of excellent performance in amperage output. The fan is used to dissipate heat generated by this equipment during the welding/cutting operation. Important: Maintain good ventilation of the louvres of this equipment. The minimum distance between this equipment and any other objects in or near the working area should be 30 cm. Good ventilation is of critical importance for the normal performance and service life of this equipment.

2. Thermal Overload protection.
   Should the machine be used to an excessive level, or in high temperature environment, poorly ventilated area or if the fan malfunctions the Thermal Overload Switch will be activated and the machine will cease to operate. Under this circumstance, leave the machine switched on to keep the built-in fan working to bring down the temperature inside the equipment. The machine will be ready for use again when the internal temperature reaches safe level.

3. Over-Voltage Supply
   Regarding the power supply voltage range of the machine, please refer to “Main parameter” table. This equipment is of automatic voltage compensation, which enables the maintaining of the voltage range within the given range.
   In case that the voltage of input power supply amperage exceeds the stipulated value, it is possible to cause damage to the components of this equipment. Please ensure your primary power supply is correct.

4. Do not come into contact with the output terminals while the machine is in operation. An electric shock may possibly occur.

LOCAL DESCRIPTION

CT-312 CT-520 is a multifunctional welding and cutting machine developed using internationally advanced inverter technology, with three functions:
argon arc welding, manual arc welding, and plasma cutting.
The emergence of inverter arc welding equipment is attributed to the emergence of inverter power theory and devices. The inverter arc welding/cutting power supply uses high-power device IGBT tubes to convert 50/60Hz power frequency into high frequency (such as 50KHZ or above), then reduces voltage and rectifies it, and outputs a high-power DC source through pulse width modulation technology (PWM). The weight and volume of the main transformer are greatly reduced, and the efficiency is increased by more than 30%. The emergence of inverter welding machines is hailed by experts as a revolution in the welding machine industry.
Our welding power supply can provide stronger, more concentrated, and more stable arcs. When conducting short circuit droplet transfer, the reaction between the welding rod and the workpiece becomes faster after a short circuit occurs. This means that welding machines with different dynamic characteristics can be easily designed, and even the characteristics can be adjusted to make the arc softer or harder.
When using argon arc welding, it is easy to start the arc, the arc is concentrated, and has the characteristics of early gas supply, delayed gas off, and stable arc. As a manual arc welding machine, the external characteristics of the welding machine are oblique, and the welding current and thrust current are uniformly adjusted by the same potentiometer, which has good arc starting and constant power output during welding, achieving the best results in both weld formation and internal quality.
As a plasma cutting process, the arc undergoes forced compression by rapidly flowing air, and the temperature rises to a height of 10000~15000 °C Ionized state, forming a strong plasma arc. Using plasma arc for rapid metal cutting, heat is concentrated and energy is effectively obtained.
By utilizing it, an extremely smooth cutting surface can be obtained, which brings convenience for subsequent processing.
CT-312 and CT-520 are widely used for welding and cutting carbon steel, stainless steel, alloy steel, copper, and other non-ferrous metals. It has the characteristics of being compact, lightweight, efficient, energy-saving, stable and reliable, with a conversion rate of over 85% for the entire machine.
Welcome users from all walks of life to use our products and provide valuable suggestions. We are committed to making our products and services perfect.

TECHNICAL PARAMETER TABLE

ITEM|

CT-312/CT-520
( Non-contact arcing)

|

CT-312
( Contact arcing)

---|---|---
Input
Voltage/Frequency| AC110/220+ 10%,50/60Hz
Input Power
Capacity (KVA)| 5.1
No-Load Loss(W)| 60
Duty Cycle(%)| 30
Power Facto| 0.73
Efficiency(%)| 80
Isolation Class| F
Protection Class| IP21
Net Weight(Kg)| 14.14| 13.56
Machine
Dimensions(mm)| 515X340X390

INSTALLATION INSTRUCTIONS

1. Tighten the copper gas nozzle with sealing tape around the IN and OUT ends.
2. Wrap the sealing tape around the meter head and tighten it in the installation position of the meter head.
3. Fix the connecting frame with nuts as shown in the figure at the installation position of the pressure reducing valve behind the welding machine.
4. Unscrew the rubber nut and fix the pressure reducing valve on the connecting frame as shown in the figure.
5. Turn on the air valve switch, lift the pressure regulating knob upwards, and adjust the air pressure (the scale in the gauge head is the value of Kg) to Regulate the air pressure (increase the pressure by rotating towards “+” and decrease the pressure by rotating towards”-“), and then lower the pressure Press the knob.
6. The position of the meter head scale is shown in the figure The indicated position in the figure is 4 kilograms of air pressure.
7. When there is too much water in the filter cylinder, it should be opened The water valve drains the water.

Our welding machine is equipped with a power supply voltage compensation device, which can continue to operate when the power supply voltage changes within ± 10% of the rated voltage.
When using longer cables, it is recommended to choose cables with a larger cross-section to reduce voltage drop; If the connecting cable is too long, it may cause It has a significant impact on the arcing performance of the welding machine and even other system performance.
So we suggest that you use the recommended configuration length.

1. Confirm that the welding machine vent is not covered or blocked to prevent cooling system failure.

2. Connect the casing to a reliable grounding device using a conductor with a cross-sectional area of no less than 6 square millimeters, by connecting the grounding wire on the back of the welding machine to the grounding device, or confirm that the grounding terminal of the power socket has been reliably grounded separately. To ensure safety, both methods can also be used simultaneously.

3. Using manual arc welding (ARC) function

4. Firstly, confirm that the cable is reliably connected to the welding pliers and quick plug, and then insert the quick plug into the quick socket with polarity “-” of the welding machine. Tighten firmly clockwise.

5. Insert the quick plug of the circuit cable into the quick socket of the welding machine panel with polarity “+argon arc/manual”, and tighten it clockwise with force, while the ground wire clamp at the other end clamps the workpiece.

6. Pay attention to the polarity of the wiring. Generally, there are two types of wiring methods for DC welding machines: direct connection method and reverse connection method;
   Positive connection method: the welding handle is connected to the negative electrode, and the workpiece is connected to the positive electrode;
   Reverse connection method: The workpiece is connected to the negative electrode, and the welding handle is connected to the positive electrode.
   When welding, it is selected according to the process requirements of the workpiece. If not selected properly, unstable arc will occur. Phenomena such as large splashing and sticking can be easily replaced with quick plugs to change polarity.

7. Using argon welding (TIG) function

8. Connect the protective gas source properly. The gas supply channel should include gas cylinders, argon pressure reducing flow meters, and gas pipes. The connection part of the gas pipe should be tightly tied with a clamp or other items to prevent leakage and air entry.

9. Install the gas-electric integrated connector of the welding gun onto the interface of the welding machine panel and tighten it clockwise with a wrench.
   Insert the aviation plug on the welding gun into the corresponding interface of the welding machine panel and tighten the interface screws.

10. Insert the quick plug of the circuit cable into the quick socket of the welding machine panel with polarity “+argon arc/manual”, and tighten it clockwise with force, while the ground wire clamp at the other end clamps the workpiece.

11. Using the Cut function

12. Connect the gas inlet and compressed air source behind the cutting machine with a pressure resistant gas pipe, and tighten the interface with a clamp or other method. The air source should be able to provide appropriate pressure, sufficient flow rate, and be dry. If your existing gas source cannot meet the above requirements, you should consider using a separate air compressor and gas pressure reducer with sufficient power to provide the required pressure and filter out impurities and moisture in the gas.

13. Install the joint of the gas electric integrated cutting gun onto the interface of the machine panel and tighten it clockwise with a wrench. Connect the aviation plug on the cutting gun to the corresponding interface of the machine panel and tighten the interface screws.

14. Insert the quick plug of the circuit cable into the quick socket with polarity “+cutting” on the machine panel, and tighten it clockwise with force, while the ground wire clamp at the other end clamps the workpiece.

15. Given encoder on the panel.
    The current regulation range of CT 416GD is 20-40.

16. Connect the power cord to the corresponding voltage level distribution box according to the input voltage level of the welding machine, and do not connect the wrong voltage At the same time, ensure that the error of the power supply voltage is within the allowable range.
    After completing the above work, the welding machine will complete the installation work and can proceed with the operation.

Related device specification sheet

MODEL NUMBER

|

CT-312/CT-520

---|---
OUTPUT CURRENT RANGE| 20A
POWER CABLE|

4mm2

| > 4mm2

25mm2

| 25mm2

4mm2

| > 4mm2
MMA HOLDER| RECOMMENDED USING >160A
MMA HOLDER
WELDING TORCH| RECOMMENDED USING >160A
WELDING TORCH
CUTTING TORCH| RECOMMENDED USING  >30A
CUTTING TORCH

DIGITAL PANEL OPERATION INSTRUCTION

OPERATING INSTRUCTIONS

1. Use argon welding function:

2. Turn the power switch on the front panel to the “ON” position, the power indicator light will light up, and the internal fan will start rotating.

3. Turn on the argon switch and adjust the gas flow rate to the rated standard.

4. After pressing the switch on the welding torch, the solenoid valve will activate. You will hear the sound of high-frequency spark discharge inside the welding machine, and at the same time, argon gas will flow out of the welding torch nozzle. Note: When welding for the first time, you need to press and hold the switch for a few seconds before welding, until all the air in the air path is discharged before starting welding. After you stop welding, there will still be argon gas flowing out within a few seconds. This is specially designed to ensure that the welding point is still protected before cooling. Therefore, when using it, it is necessary to maintain the welding position for a period of time after the arc is extinguished before removing the welding gun.

5. Set appropriate welding current according to the thickness of the workpiece and process requirements.

6. Maintain a distance of 1-4mm between the tungsten electrode and the welding workpiece, press the welding torch control switch, and high-frequency discharge will occur between the welding torch electrode and the workpiece; After ignition and arcing, the high-frequency arcing sparks inside the welding machine immediately disappear, and work can begin at this time.

7. Use manual welding function

8. Turn on the power switch, the power indicator light will be on, and the internal fan will start rotating.

9. Set the corresponding welding current and select appropriate welding rods based on the thickness of the welded parts, and clamp the welding rods onto the welding tongs for welding.

10. Attention: When using manual arc welding, unplug the aviation plug

11. Use cutting function:

12. Turn on the power switch, the power indicator light will be on, and the internal fan will start rotating.

13. Open the air valve or switch that controls the air, and adjust the pressure and air flow rate to the rated standard.

14. After pressing the switch on the cutting gun, the solenoid valve will activate.
    You will hear the sound of high-frequency spark discharge inside the machine, and gas will flow out of the cutting torch nozzle.

15. Set the corresponding cutting current based on the cutting thickness of the workpiece.

16. Contact the nozzle of the cutting gun with the cutting workpiece, press the button on the cutting gun to cause an arc, and the high-frequency arc discharge sound inside the machine disappears. At this point, cutting can begin. After cutting and arcing, attention should be paid to maintaining a distance of about 1 mm between the nozzle and the workpiece, which is beneficial for protecting the nozzle.

TROUBLE SHOOTING

The meter show nothing;
Fan does not rotate;
No welding output|

• Confirm the power switch is on.
• Power supply available for input cable.
• Check if the three phase commute bridge is damaged.
• There is malfunction occurs in the supplementary power source on control board (contact dealers).

The meter shows;
Fan works normally; No welding output|

• Check if all the sockets in the machine are connected well.
• There is open circuit or badness of connect at the joint of output terminal.
• The control cable on the torch is broken off or the switch is damaged.
• The control circuit is damaged.(contact to dealers)

the meter shows;
Fan works normally; Abnormal indicator lights.|

• It might be over-current protection, please turn off the power switch; restart the machine after the abnormal indicator light winked.
• It might be overheating protection, please wait for about 2-3 minutes until the machine renew without turn off the power switch.
• It might be multi function of inverter circuit. (contact dealers)

Power indicator light is not on, fan does not turn, no welding press output|

• Power switch is broken
• Verify that the electrical grid connected to the input electricity regulations has electricity
• Enter whether there is a break in the cable

The power switch indicator is on and the fan does not turn|

• It is possible that the input is misconnected to the 380V power supply, causing the over-voltage protection circuit to start, which is changed to the 220V power supply, and it can be started again.
• 220V power instability (too long input line) or input line overlap on the grid, resulting in over voltage protection
• Open and close the power switch continuously for a short period of time, causing the over-voltage protection circuit to start, shut down and wait for 2-3 minutes before starting up again.

When the fan turns, the abnormal indicator light is not on and there is no high frequency discharge sound, and no gas flow from the cutting torch|

• The vh-07 plug-in voltage of multi-meter to MOS panel should be about DC308V
• The auxiliary power on MOS panel has a green indicator light. If the light is not on, the auxiliary power is not working
• Control circuit problem, find the cause or contact the dealer to cut the control line on the gun. Cutting gun cable is broken.

MAINTENANCE

Regularly remove dust with clean, compressed air. If the welding machine is working in smoky conditions, in heavily polluted air, remove accumulated dust daily. The compressed air pressure should be maintained at such a level as not to damage small parts inside the device max. 2-4 bar.
Regularly check the internal systems of the welder, check the correctness and reliability of connections (especially equipment and parts). If you notice rust and loose the connection, remove the rust or oxide coating with sandpaper, reconnect and tighten.
Avoid situations where water or steam can enter the device.
If the welder gets wet, dry it and then check the insulation of the device (also between joints and contacts). After checking that everything is OK, you can continue working

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