Power Fist 8785107 Manuel D'utilisateur page 20

8785107
CHECK FOR GAS LEAKAGE
Check for gas leakage after each time the welding unit is set up for welding
and at regular intervals.
The recommended procedure is as follows:
1. Connect the regulator and gas hose assembly and then tighten all
connectors and clamps.
2. Slowly open the cylinder valve.
3. Set the flow rate on the regulator to approximately 15 to 25 CFH.
4. Close the cylinder valve and pay attention to the needle indicator on the
regulator's pressure gauge. If the needle drops away towards zero, there is
a gas leak.
Sometimes a gas leak can be slow and difficult to identify. Leave the gas
pressure in the regulator and line for an extended time. Perform the test as
above, but reduce the flow rate to 16 to 21 CFH. Close the cylinder valve
and check after a minimum of 15 minutes.
5. After confirming there is a loss of gas, check all connectors and clamps for
leakage by brushing or spraying with soapy water. Bubbles will appear at
the leakage point.
6. Tighten clamps or fittings to eliminate gas leakage. Replace the clamps and
fittings if this fails to solve the problem.
ALIGN AND SET THE DRIVE ROLLER
The correct drive roller grove must be set on the wire drive mechanism before
the welding wire is installed in the unit.
1. Open the door to the welding unit's drive compartment.
2. Remove the drive tension by loosening the drive tension adjusting knob
(Fig. 2-1) and lifting the drive tension adjustor away from the drive tension
arm (Fig. 2-2). Pull the drive tension arm away from the drive roller.
3. If there is a wire already installed in the welding unit, roll it back onto the
wire spool by hand-turning the spool counterclockwise. Be careful not to
allow the wire to come out of the rear end of the inlet guide tube (Fig. 2-3)
without holding onto it or it will unspool itself. Put the end of the wire into
the hole on the outside edge of the wire spool and bend it over to hold the
20
130A Inverter MIG Welder
For technical questions call 1-800-665-8685
V4.0