Power Fist SMART TIG AC/DC-200P Manuel De L'utilisateur page 21

V4.1
MAINTENANCE
In order to guarantee that the arc welding unit operates efficiently and safely, it must be
maintained regularly.
WARNING! Make sure that the main power switch has been disabled before attempting any type of maintenance to
the machine. For safety while maintaining the machine, remove from the power source and wait for 3 minutes to
allow the capacity voltage to drop to a safe voltage
1. Maintain the tool with care. A tool in good condition is efficient, easier to control and will have fewer problems.
2. Follow instructions for lubricating and changing accessories.
3. Inspect the tool fittings, alignment and hoses and power supply cord periodically. Have damaged or worn
components repaired or replaced by an authorized technician.
4. When servicing, use only identical replacement parts. Only use accessories intended for use with this tool. Replace
damaged parts immediately.
5. Keep the wire drive compartment lid closed at all times unless the wire needs to be changed or the drive tension
needs adjusting.
6. Keep all parts of the welding unit, such as nozzles and tungsten electrode, clean and replace when necessary (see
Consumable Maintenance and Troubleshooting).
7. Replace ground cable, ground clamp or torch assembly when damaged or worn.
8. Periodically clean dust, dirt, grease, etc. from your welding unit. Every six months or as necessary, remove the side
panels from the welding unit and air-blow any dust and dirt that may have accumulated inside the welding unit.
9. Maintain the tool's label and name plate. These carry important information. If unreadable or missing, contact
Princess Auto Ltd. for replacements.
WARNING! If the equipment does not work normally, stop using the machine at once and check for any signs of
trouble. Have the machine inspected by a qualified professional. Do not allow untrained persons to check, clean or
repair the machine. Only use replacement parts that have been approved by
the manufacturer.
MAINTENANCE - CONSUMABLES
Maintain the consumables to avoid the need for premature replacement of the torch assembly.
MAINTAINING THE TUNGSTEN ELECTRODE
The tungsten rod is not consumed during welding, but it can become shorter due to the end being burned off during the
welding process. When this occurs, loosen the collet and pull the tungsten electrode forward (see Preparing the torch).
This method is also used to replace the tungsten rod.
The end of the electrode may be ground to a point to provide better transfer of the electric arc for DCEN or AC welding.
Use a dedicated grinding wheel to prevent contamination of the rod. The tungsten rod should be held point forward
when applied to the grinding wheel. Grinding the tungsten rod end against the side can create parallel grooves along the
length of the point. This can negatively affect the focus of the welding arc and create poor welds.
MAINTAINING THE NOZZLE
The nozzle directs the shielding gas to the weld puddle, determines the size of the shielding gas area and prevents the
electrically hot contact tip from contacting the workpiece.
NOTICE! Clean the nozzle of slag when needed. During the welding process, spatter and slag will build up inside the
nozzle. Failure to clean and/or replace the nozzle in a timely fashion will damage the front end of the torch
assembly.
1. Stop welding and clean any accumulated slag or spatter from the nozzle every 5 to 10 minutes of welding time.
2. Overhead welding may allow molten metal to drip from the weld puddle into the nozzle. Stop welding immediately
and clean the nozzle.
3. Replace the nozzle when you can no longer clean the slag out. Failure to keep the nozzle adequately cleaned can
result in a restricted nozzle. The slag build up in the nozzle affects the direction, concentration and/or flow rate of the
shielding gas. This problem can cause porous, brittle welds and reduce penetration.
Visit www.princessauto.com for more information
SMART TIG AC/DC-200P Inverter Welding Machine 8560237
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