Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Troubleshooting
Related Manuals for LOKERMANN GRAND TIG 250 DC PULSE
Summary of Contents for LOKERMANN GRAND TIG 250 DC PULSE
- Page 1 USER MANUAL INVERTER Based Welding Machines GRAND TIG 250 DC PULSE 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.
-
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 INSTALLATION WARNING warning 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: 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
Roller wheel amps control on torch. Integrated heavy duty industrial trolley and water cooler (optional). Wireless Remote Control . (optional) Wire / Wireless Foot Pedal. (optional) Technical Models GRAND TIG 250 DC PULSE Data Parameters Power Supply Voltage (V) 3~380V/400V±10% Frequency(HZ) 50/60 Rated input current（A）... -
Page 5: Brief Introduction
5) High frequency arc is suitable for high welding speed to improve the productivity. GRAND TIG 250 DC PULSE is suitable for all positions welding for various plates made of stainless steel, carbon steel, alloyed steel, titanium, magnesium, cuprum, etc, which is also applied to pipe installment, mould mend, petrochemical, architecture decoration, car repair, bicycle, handicraft and common manufacture. -
Page 6: Working Principle
Meanwhile, the welding current parameters can be adjusted continuously and steplessly to meet with the requirements of welding craft. Volt-Ampere GRAND TIG 250 DC PULSE has excellent volt-ampere characteristic. Referring to the following graph. In TIG welding, the relation between the rated loading voltage U2 and welding current I2 Characteristic is as follows: When I2≤600A，... - Page 7 Further Controls Explained LH Multifunction Display (9) Before welding this displays the setting selected or being adjusted using the control knob (22). During welding it displays welding current. The parameter setting displayed is indicated by the LEDs beside the display; Current (A), Time (S), Percentage (%) and Frequency (Hz).
-
Page 8: Power Supply Input Connection
Power GRAND TIG 250 DC PULSE is designed to operate on a 380V AC power supply. supply When the power supply voltage is over the safe work voltage, there are over voltage and under... -
Page 9: 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) is connected Operation to the negative socket, this is known as DCEP. However various electrodes require a different polarity for for MMA optimum results and careful attention should be paid to the polarity, refer to the electrode manufacturers information for the correct polarity. -
Page 10: Mma Welding
3.3.3 One of the most common types of arc welding is manual metal arc welding (MMA) or stick welding. Welding An electric current is used to strike an arc between the base material and a consumable electrode rod or ‘stick’. The electrode rod is made of a material that is compatible with the base material being welded and is covered with a flux that gives off gaseous vapours that serve as a shielding gas and providing a layer of slag, both of which protect the weld area from atmospheric contamination. -
Page 11: Installation Operation For Tig Welding
Trouble Possible Reason Suggested Remedy Check earth lead is connected. Incomplete welding circuit Check all cable connections. Check that the machine is switched No power supply on and has a power supply No arc Check the MMA selector switch is Wrong mode selected selected Arc length too long... -
Page 12: Operation For Tig Welding
Switch the ON/OFF Switch (located on the rear panel) to OFF. Connect the earth lead to “+”, tighten clockwise; Connect the earth clamp to the work piece. Contact with the work piece must be firm contact with clean, bare metal, with no corrosion, paint or scale at the contact point. -
Page 13: Remote Current Control
3.4.3 Remote TIG series of welding machines can accept remote current control from a potentiometer/ analogue current signal or a digital up/down button signal. Potentiometer remote control will change the current from control the 5A minimum to the maximum set using the machine current control .Using an up/ down button remote signal, the current may be increased or decreased in 1A increments, or ‘scrolls’... - Page 14 3.4.4 DC TIG welding is a process in which an arc is struck between a TUNGSTEN electrode and the metal work piece. The weld area is shielded by an inert gas flow to prevent contamination of the tungsten, Welding molten pool and weld area. When the TIG arc is struck the inert gas is ionized and superheated changing it’s molecular structure which Techniques converts it into a plasma stream.
-
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 Troubleshooting
3.4.6 The following chart addresses some of the common problems of TIG welding. In all cases of TIG Welding equipment malfunction, the manufacturer’s recommendations should be strictly adhered to and followed. trouble shooting Trouble Possible Reason Suggested Remedy Use pure Argon. Check cylinder Incorrect Gas or No Gas has gas, connected, turned on and torch valve is open... -
Page 17: Remote Control Configuration
Connect the torch to the DC- output Torch connected to DC + terminal Remove materials like paint, Contaminated base metal grease, oil, and dirt, including mill scale from base metal. Unstable Arc during welding Remove 10mm of contaminated Tungsten is contaminated tungsten and re grind the tungsten Lower torch so that the tungsten is Arc length too long... -
Page 18: Wireless Remote Control Configuration
3.5.1 On-off switch Wireless remote control Configuration On-off switch To synchronise a remote control to a machine, follow these instructions: Ensure the welding power supply is switched off. Press and hold the parameter select/adjust knob on the front panel of the power supply (2-4 seconds) while at the same time turning the machine ON using the ON-OFF switch on the back of the welding power supply. -
Page 19: Operation Environment
Operation ▲ Height above sea level ≤1000 M ▲ 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 20: Troubleshooting
Troublesho- Before the welding machines are dispatched from the factory, they have already been oting 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! -
Page 21: 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 22: Electrical Schematic Drawing
Electrical schematic drawing... - Page 23 LOKERMANN Srl, Via Produzione 16/18, 37044, Cologna Veneta, (VR)-Italy, Tel: +39 0442 1722469 lokermann@lokermann.eu - www.lokermann.eu...