Cornwell Tools MMWMGS250, Руководство пользователя

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-The welding wire is electrically hot when the power is on and the torch trigger is activated.
4.2.16 Set the WIRE SPEED control to the middle of the wire speed range.
4.2.17 Straighten the MIG torch cable and pull the trigger in the gun handle to feed the
wire through the torch assembly. When at least one inch of the wire sticks out past the end
of the torch, release the trigger.
4.2.18 Turn the Power Switch to the OFF position.
4.2.19 Select a contact tip stamped with the same diameter as the wire being used.
NOTE:
-Due to inherent variances in flux cored welding wire, it may be necessary to use a contact tip one
size larger than your flux core wire if wire jams occur.
4.2.20 Slide the contact tip over the wire (protruding from the end of the torch). Thread
the contact tip into the end of the torch and hand-tighten securely.
4.2.21 Install the nozzle on the torch assembly.
4.2.22 Cut off excess wire that extends past the end of the nozzle more than 1/4 inch.
4.2.23 Turn the welder ON.
5. SETTING THE DRIVE ROLL TENSION
Arc flash can injure eyes! To reduce the risk of arc flash, make certain that the wire coming
out of the end of the torch does not come in contact with the work piece, ground clamp, or
any grounded material during the drive tension setting process or arcing will occur.
5.1 Press the trigger on the torch.
5.2 Turn the drive tension adjustment knob clockwise until the wire seems to feed smoothly
without slipping.
6. GAS INSTALLATION
Shielding gas cylinders and high pressure cylinders can explode if damaged, so treat them
carefully.
•
Never expose cylinders to high heat, sparks, open flames, mechanical shocks or arcs.
•
Do not weld on the cylinder.
•
Always secure cylinder upright to a cart or stationary object.
•
Keep cylinders away from welding or electrical circuits.
•
Use the proper regulators, gas hose and fittings for the specific application.
6.1 Polarity Changing - When MIG wire is used, shielding gas is required and the polarity on
this unit needs to be electrode positive.
6.1.1 Electrode Positive for MIG Welding - The Weld Power Cable should be connected to
the positive (+) weld output connection on the front of the machine. The ground cable would
then be connected to the negative (-) weld output connection. Refer to the polarity setting
label inside the wire compartment.
6.1.2 Electrode Negative for Flux Core Welding - The Weld Power Cable should be
connected to the negative (-) weld output connection on the front of the machine. The
ground cable would then be connected to the positive (+) weld output connection. Refer to
the polarity setting label inside the wire compartment.
6.2 Connect one end of the gas hose to the gas hose connection on the back of the welder.
Use a wrench to snug up the connection.