Setting Up The Work Piece - Matco Tools MP200DVILCD Owner's Manual

DC STICK OPERATION

High voltage danger from power source! Consult a qualified electrician for proper
installation of receptacle. This welder must be grounded while in use to protect the
operator from electrical shock.

Do not remove grounding prong or alter the plug in any way. Use only the supplied
adapter between the plasma cutter's power cord and the power source receptacle. Make
sure the POWER switch is OFF when connecting your welder's power cord directly to a
properly grounded 230 VAC, 60 HZ, Single Phase, 50 Amp input power supply. Or, when
using the supplied 120V adapter, connect the 120V Adapter to a properly grounded 120V,
20 Amp input power supply.

1. SETTING UP THE WORK PIECE

a. Welding positions - There are two basic positions, for welding: Flat and Horizontal. Flat
welding is generally easier, faster, and allows for better penetration. If possible, the work
piece should be positioned so that the bead will run on a flat surface.
b. Preparing the Joint- Before welding, the surface of work piece needs to be free of dirt, rust,
scale, oil, or paint or it will create brittle and porous welds. If the base metal pieces to be
joined are thick or heavy, it may be necessary to bevel the edges with a metal grinder;
the correct bevel should be around 60 degree. See the following illustration:
Based on different welding positions, there are different welding joints. See the following illustration for more
information.
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