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GRAND
T I G 2 0 0
D C P F C M V
USER MANUAL
INVERTER Based Welding Machines
IMPORTANT: Read this OPERATOR MANUAL together
with PRESCRIPTION AND COMPLIANCE MANUAL before
to use this equipment. In case of loss one of two parts
contact immediately your dealer.
Allow the operator to consult this manual.
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Table of Contents
Troubleshooting
Related Manuals for LOKERMANN GRAND TIG 200 DC PFC MV
Summary of Contents for LOKERMANN GRAND TIG 200 DC PFC MV
- Page 1 USER MANUAL INVERTER Based Welding Machines GRAND T I G 2 0 0 D C P F C M V IMPORTANT: Read this OPERATOR MANUAL together with PRESCRIPTION AND COMPLIANCE MANUAL before to use this equipment. In case of loss one of two parts contact immediately your dealer.
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Page 2: Table Of Contents
CONTENT 1 INSTALLATION WARNING 2 OVERVIEW 2.1 Features 2.2 Technical Data 2.3 Brief Introduction 2.4 Duty cycle and Over-heat 2.5 Working Principle 2.6 Volt-Ampere Characteristic 3 INSTALLATION & OPERATION 3.1 Layout for the front and rear panel 3.2 Power supply input Connection 3.3 Installation &... -
Page 3: Installation Warning
INSTALLATION WARNING Installation This machine is certified according to 60974-10:2014 Arc Welding Equipment Part 10: Electromagnetic compatibility (EMC) requirement and the EUT belongs to Group 2 Class A. warning WARNING: This Class A equipment is intended for industrial use and it is not intended for use in residential locations where the elctrical power is provided by the public low-voltage supply system. -
Page 4: Overview
Extremely low weight and versatility. Generator friendly Designed to work with diesel generators and to avoid failures due to its voltage spikes. Technical Data Models GRAND TIG 200 DC PFC MV Parameters Power Supply Voltage (V) 1~110V/120V/130V±10% 1~220V/230V/240V±10% Frequency(HZ) 50/60... -
Page 5: Brief Introduction
GRAND TIG 200 DC PFC MV is suitable for all positions welding for various plates made of stainless steel, carbon steel, alloyed steel, titanium, copper, etc, which is also applied to pipe installment, mould mend, petrochemical, architecture decoration, car repair, bicycle, handicraft and common manufacture. -
Page 6: Duty Cycle And Over-Heat
Working Principle The working principle of GRAND TIG 200 DC PFC MV of welding machines is shown in the following figure. Single-phase 110V/220V line frequency AC is rectified into DC, then is converted to medium frequency AC by inverter device (IGBT), after reducing voltage by medium transformer (the main transformer) and rectified by medium frequency rectifier (fast recovery diode), and is outputted by inductance filtering. -
Page 7: Installation Operation
Installation & （1） “-” Output terminal. Operation （2） TIG torch remote connection socket. （3） TIG torch gas connector. （4） “+” Output terminal. （5） Power switch: control the power Layout for Supply on and off. the front （6） Input power cable. and rear （7）... - Page 8 Lift TIG Ignition is a compromise that minimises tungsten contamination while eliminating the electrical interference of HF start systems. Lift arc starting works by lightly resting the tungsten on the work piece, activating the torch trigger signal and then lifting the tungsten off. The control circuit will sense when the tungsten is removed from the work piece and send a low powered pulse of electricity through the tungsten that will cause the TIG arc to initiate.
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Page 9: Power Supply Input Connection
Pulse welding Pulse welding mode switches the welding output between a high and low current output in a cyclical manner. When used correctly this function has substantial benefits in the TIG welding process including greater weld penetration for less work heat input and greater control of the weld pool. The basic theory for setting the base current using pulse mode is that the base current should be sufficient to maintain the existing molten weld pool, while the peak current is sufficient to melt new metal in order to move/ expand the molten weld pool. -
Page 10: Installation & Operation For Mma Welding
Installation Connection of Output Cables Two sockets are available on this welding machine. For MMA welding & the electrode holder is shown be connected to the positive socket, while the earth lead (work piece) Operation is connected to the negative socket, this is known as DCEP. However various electrodes require a for MMA different polarity for optimum results and careful attention should be paid to the polarity, refer to the electrode manufacturers information for the correct polarity. -
Page 11: Operation For Mma Welding
3.3.2 Operation According to the above method to install is correct, turn the power switch, so that the power for MMA switch is “ON” position, then the power indicator light, the fan comes on, the device work properly. Welding Select the MMA function with the 4T/2T/MMA selector switch. Set the required output current by turning the current control knob . -
Page 12: Installation & Operation For Tig Welding
Installation & Switch the ON/OFF Switch (located on the rear panel) to OFF. Operation Connect the earth lead to “+”, tighten clockwise; Connect the earth clamp to the work piece. Contact with the work piece must be firm for TIG contact with clean, bare metal, with no corrosion, paint or scale at the contact point. -
Page 13: Tig Welding Techniques
3.4.3 TIG GUN TIG GUN (TIG-17) Control 12 Pin Remote Plug Connection 3.4.4 Tig Welding Techniques DC TIG Welding The DC power source uses what is known as DC (direct current) in which the main electrical component known as electrons flowin only one direction from the negative pole (terminal) to the positive pole (terminal). - Page 14 TIG Welding Fusion Technique Manual TIG welding is often considered the most difficult of all the welding processes. Because the welder must maintain a short arc length, great care and skill are required to prevent contact between the electrode and the work piece. Similar to Oxygen Acetylene torch welding, Tig welding normally requires two hands and in most instances requires the welder to manually feed a filler wire into the weld pool with one hand while manipulating the welding torch in the...
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Page 15: Electrodes
3.4.5 Electrodes Tungsten Electrodes Tungsten is a rare metallic element used for manufacturing TIG welding electrodes. The TIG process relies on tungsten’s hardness and high-temperature resistance to carry the welding current to the arc. Tungsten has the highest melting point of any metal, 3,410 degrees Celsius. Tungsten electrodes are non-consumable and come in a variety of sizes, they are made from pure tungsten or an alloy of tungsten and other rare earth elements. -
Page 16: Tig Welding Trouble Shooting
Electrode Included Angle/Taper DC Welding Tungsten electrodes for DC welding should be ground longitudinally and concentrically with diamond wheels to a specific included angle in conjunction with the tip/flat preparation. Different angles produce different arc shapes and offer different weld penetration capabilities. In general, blunter electrodes that have a larger included angle provide the following benefits ：... -
Page 17: Operation Environment
▲ Height above sea level ≤1000 M Operation ▲ Operation temperature range -10〜+40°C environment ▲ Air relative humidity is below 90 %( 20°C) ▲ Preferable site the machine some angles above the floor level, the maximum angle does not exceed 15℃. ▲... -
Page 18: Troubleshooting
Troublesho- oting Before the welding machines are dispatched from the factory, they have already been tested and calibrated accurately. It is forbidden for anyone who is not authorized by our company to do any change to the equipment! Maintenance course must be operated carefully. If any wire becomes flexible or is misplaced, it maybe potential danger to user! Only professional maintenance staff that isauthorized by our company could overhaul the machine! Be sure to shut off the Main Input Power before doing any repair work on the welding machine! -
Page 19: List Of Error Code
List of error code Error Type Error code Description Lamp status Yellow lamp(thermal Over-heating(1st thermal relay) protection) always on Yellow lamp(thermal Over-heating(2nd thermal relay) protection) always on Yellow lamp(thermal Thermal relay Over-heating(3rd thermal relay) protection) always on Yellow lamp(thermal Over-heating(4th thermal relay) protection) always on Yellow lamp(thermal Over-heating(Program in default) -
Page 20: Electrical Schematic Drawing
Electrical schematic drawing... - Page 21 LOKERMANN Srl, Via Produzione 16/18, 37044, Cologna Veneta, (VR)-Italy, Tel: +39 0442 1722469 lokermann@lokermann.eu - www.lokermann.eu...