Tweco Welding Equipment Basic Utility Cart - Manual (Page 6)

WELDING EQUIPMENT basIc UTILITy caRT assEMbLy INsTRUcTIONs
December 01, 2011 6 0-5221
I. Installation of Shielding Gas for MIG (GMAW) or TIG (GTAW) Processes
1. Cylinder positioning
Fit the Power Source to the cart BEFORE attempting to position the cylinder on the cart. Block the wheels of
the unit so it cannot roll. Carefully stand the cylinder on the tray and with one foot, press against the bottom
of the cylinder to assure it is against the back of the unit. Chain the cylinder in place. Refer to Figure below.
2. Cracking
Remove the large metal cap on top of the cylinder by rotating counter clockwise. Next remove the dust seal.
Position yourself so the valve is pointed away from you and quickly open and close the valve for a burst of
gas. This is called “Cracking” and is done to blow out any foreign matter that may be lodged in the fitting.
3. Fit Regulator/Flow Meter to cylinders
Screw the gas regulator into the appropriate cylinder. The nuts on the regulator and hose connections are
right hand (RH) threaded and need to be turned in a clockwise direction in order to tighten. Tighten with a
wrench.
Regulator and
Flow Meter
Cap
“Cracking”
1
2
3
4
5
Art # A-10867
Shielding
Gas
Shielding
Gas
Shielding
Gas
Shielding
Gas
1 1/8”
Gas Hose
Gas Cylinder Installation