ESAB CIGWELD EasyWeld 130, Руководство по эксплуатации, Страница: 35 / 66

Manual 0-5618 5-3 MIG (GMAW) WELDING
EasyWeld / HandyWeld 130
2. Since the regulator is a preset type, no adjustments to the regulator are necessary. Before opening the
cylinder valve, be sure that the flow adjusting valve is in a finger-tight "OFF" position (clockwise).
3. Slowly and carefully, open the cylinder valve until the maximum pressure registers on the high pressure
gauge.
!!
CAUTION
DO NOT purge oxidising or flammable gases in the presence of flame, lighted cigarettes, or other sources of ignition or in
a confined space. Open each downstream valve in turn, if more than one regulator is used. Close one valve before open-
ing the next one. This procedure will prevent explosive gas mixtures occurring in the welding hose between regulators
and equipment.
Close equipment valve(s) after purging, and test all connections for leaks with a suitable leak detection solution or soapy
water. Never use a flame when testing for leaks.
Adjusting Flow Rate
A-13922_AB
Flow Rate Adjusting Valve
Desrease / Close
Open / Increase
Cylinder
Preset Argon Regulator
Gas Hose
Figure 5-3: Adjust Flow Rate
With the regulator/flowmeter ready for operation, adjust working flow rate as follows:
1. Slowly turn adjusting valve in anti-clockwise direction to open and increase until the bobbin in the flow
tube indicates the required flow rate.
NOTE 5
It may be necessary to re-check the shielding gas regulator/flowmeter flow rate following the first weld sequence due
to back pressure present within shielding gas hose assembly.
2. To reduce flow rate, allow the welding grade shielding gas to discharge from regulator/flowmeter by
opening the downstream valve. Bleed welding grade shielding gas into a well ventilated area and away
from any ignition source. Turn adjusting screw clockwise, until the required flow rate is indicated on
the gauge. Close downstream valve.
3. The correct flow rate will depend on the place and conditions you are working in. For indoors work
shielding gas flow rate can be from 12L/min for welding thin metals (0.6-1.0mm) when using 0.6mm
MIG wire, up to 15L/min when using thicker metals and using 0.8mm MIG wire. When welding near
draughty doorways then the gas flow rate can go up to 18-20L/min. The tell tale sign is to ensure your
finished welds do-not have priority holes in the surface.
Shutdown
Close cylinder valve whenever the regulator/flowmeter is not in use. To shut down for extended periods (more
than 30 minutes).
1. Close cylinder or upstream valve tightly.
2. Open downstream equipment valves to drain the lines. Bleed gas into a well ventilated area and away
from any ignition source.
3. After gas is drained completely, disengage adjusting screw and close downstream equipment valves.
4. Before transporting cylinders that are not secured on a cart designed for such purposes, remove
regulators/flowmeters.