The Parweld XTT-182 DV is an inverter-based welding machine designed for both TIG (Tungsten Inert Gas) and MMA (Manual Metal Arc) welding processes. It utilizes advanced inverter technology, which rectifies the input voltage to DC and then inverts it to high-frequency AC voltage before converting it back to DC for the output. This design allows for a smaller transformer, resulting in a lighter machine and improved power efficiency.
Function Description:
The XTT-182 DV is capable of performing both MMA and TIG welding. In MMA mode, it provides a stable arc for various electrode types, with an adjustable arc force control to manage penetration. In TIG mode, it offers both LIFT-ARC and HF (High Frequency) start options, allowing for precise arc ignition without contaminating the tungsten electrode. The machine features controls for main amperage, downslope time (in TIG mode), and arc force (in MMA mode). It also includes a process selector switch to easily switch between MMA, 2-touch TIG, and 4-touch TIG modes.
Important Technical Specifications:
The XTT-182 DV is a dual-voltage machine, operating on either 110V +/- 10% or 230V +/- 10% AC power at 50/60Hz.
- 110V Input:
- TIG: Max input current 33A, effective input current 19.5A, fuse rating 32A, output current range 5-160A.
- MMA: Max input current 38A, effective input current 21A, fuse rating 32A, output current range 5-125A.
- 230V Input:
- TIG: Max input current 20A, effective input current 11A, fuse rating 16A, output current range 5-180A.
- MMA: Max input current 29A, effective input current 17.5A, fuse rating 16A, output current range 5-180A.
- Output Open Circuit Voltage (OCV): 71V for both 110V and 230V inputs.
- Output Load Voltage:
- TIG: 10-16.4V (110V), 10-17.2V (230V).
- MMA: 20-25V (110V), 20-27.2V (230V).
Usage Features:
- Controls:
- ON/OFF Switch: Powers the machine on or off.
- Fault Light: Indicates a fault or over-temperature condition.
- Power Light: Illuminates when mains power is applied and the machine is on.
- Process Selector: A three-position switch for MMA, 2-touch TIG (momentary), and 4-touch TIG (latching).
- TIG Mode Switch: Toggles between LIFT-ARC and HF start TIG.
- Main Amperage Control: Adjusts welding current in both TIG and MMA modes.
- Downslope/Arc Force Control: Dual function; controls downslope time (0-10 seconds) in TIG mode and arc force in MMA mode.
- Positive Connection: Used for electrode holder in MMA or earth lead in TIG.
- Negative Connection: Used for earth lead in MMA or torch in TIG.
- Control Socket: For remote control (trigger or amperage).
- Gas Output Connection: 3/8 BSP connection for gas output in TIG welding.
- Gas Input Connection: Nipple connection for gas input in TIG welding.
- Installation: Requires proper grounding and connection to an adequate power supply. The machine should be located in a clean, dry area with ambient temperatures between 0-40°C, away from direct sunlight, oil, steam, corrosive gases, and excessive vibration. A minimum distance of 12" (300 mm) from walls is recommended for proper airflow.
- TIG Welding:
- Torch Connection: TIG torch connects to the negative terminal, and the work lead to the positive terminal for DC straight polarity.
- Gas Connection: Gas hose connects to the gas output connection, and trigger wires to the trigger socket.
- Start Modes: LIFT-ARC involves briefly contacting the workpiece with the tungsten electrode, then lifting to draw an arc. HF start initiates the arc without contact.
- Trigger Control: 2-touch (momentary) requires holding the trigger for the arc to be on. 4-touch (latching) requires a press and release to start, and another press and release to stop, with downslope activated by holding the button before the final release.
- Shielding Gas: Pure Argon is recommended for most alloys including aluminum, carbon steel, stainless steel, nickel alloy, copper, and titanium.
- Tungsten Electrodes: Thoriated 2% (red) is suitable for DC welding of mild steel, stainless steel, and copper. Ceriated 2% (grey) is for DC welding of mild steel, stainless steel, copper, and AC welding of aluminum, magnesium, and their alloys. Zirconiated (white) is for AC welding of aluminum, magnesium, and their alloys.
- MMA Welding: Electrode holder connects to the positive terminal, and the work lead to the negative terminal. Arc force control helps manage penetration.
- Safety Precautions: Emphasizes protection against electric shock, fumes and gases, arc rays, and fire/explosion hazards. Proper PPE (welding helmet, safety glasses, protective clothing, gloves) is mandatory. Ventilation is crucial, especially in confined spaces. Cylinders must be handled with care to prevent explosion.
Maintenance Features:
- Routine Maintenance: The only routine maintenance required is thorough cleaning and inspection of the power supply. The frequency depends on usage and the operating environment.
- Cleaning: Disconnect primary power and wait at least two minutes for capacitors to discharge before opening the cover. Use a vacuum cleaner to remove dirt and dust. If necessary, wipe clean with solvents recommended for electrical apparatus.
- Fault Finding: The manual provides comprehensive fault-finding tables for both MMA and TIG welding problems, covering issues like arc establishment, arc start smoothness, gas pockets, cracks, lack of fusion, and power source problems. Each problem is linked to possible causes and recommended remedies. For example, if the welding arc cannot be established, possible causes include disconnected work clamp/leads, incorrect gas flow, or an empty cylinder. Remedies include checking connections, adjusting gas flow, or replacing the cylinder. For power source issues like no power output, causes could be input voltage failure, over-voltage, or internal fault, requiring re-establishing mains supply, checking voltage, or professional inspection.
Accessories:
The manual lists various accessories and spares, including:
- Electrode Holder and Earth Leads: For MMA welding.
- TIG Torches: ERGO Tig Torch with remote control, and a Tig Spares Kit.
- Gas Equipment: Everyday Gas Regulators (single stage, 300 BAR) with various flow rates and outlet pressures, and Flow Meters (e.g., Mixed Gas 15 lpm).
- TIG Torch Spares (PRO26 and PRO26FX): Includes standard collets, stubby collets, standard ceramic cups, long ceramic cups, stubby ceramic cups, gas lens bodies, gas lens cups, cup gaskets, insulators, torch heads (flexible and standard), back caps, O-rings, switch kits, connectors, handle, screw pack, knuckle joint, leather covers, neoprene covers, and sheath jointing repair kits.
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