Vector Welding C-Series Operating Instructions Manual page 70

MIG SERIES EQUIPMENT
Operation
2.8 Feed Roller Pressure Adjustment
The roller on the swing arm applies pressure to the grooved roller via an adjustable tension
devise. The Tension Adjuster should be set to a minimum pressure that will provide satisfactory
wire feed without slippage. If slipping occurs, and inspection of the wire out of the MIG Gun
reveals no deformation or wear, the conduit liner should be checked for kinks or clogging
from metal flakes. If this is not the cause of slipping, the feed roll pressure can be increased
by rotating the Tension Adjusting knob clockwise. The use of excessive pressure may cause
rapid wear of the feed roller, motor shaft and motor bearings.
NOTE
Genuine contact tips and liners should be used. Many non-genuine liners use inferior
materials which can cause wire feed problems.
2.9 Changing The Feed Roll
NOTE
Feed rolls often come with a rust prohibitive coating that needs to be cleaned off before installation.
A Feed roll consists of four different sized grooves. As delivered from the factory the drive
roll is installed for 0.6 / 0.8 mm .
The stamped marking on the feed roll refers to the groove furthest from the stamped marking.
When mounted, that will be the groove closest to the motor and the one to thread.
To ensure proper wire feed, the groove closest to the motor must match the electrode wire
size being used.
The size that is visible when fitting the feedroll is the groove size in use.
NOTE
All grooved feed rolls have their wire size or range stamped on the side of the roll. On rolls
with different size grooves, the outer (visible when installed) stamped wire size indicates
the groove in use.
Refer to feed roll kit in the Appendix for the proper selection and ordering of feed roll kits.
Kit includes drive rolls, an input wire guide and an output wire guide for a specific wire type
and size.
Feed rolls are removed by twisting the feed roll retainer cap and aligning the retaining knob
splines/tabs with the drive gear splines. Feed rolls are installed by putting the feed roll onto
the drive gear splines and twisting the feed roll retainer cap so that the splines/tabs rest
against the face of the feed roll where they will click into place.
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MIG SERIES EQUIPMENT
WARNING
The welding wire is electrically Hot if it is fed by depressing MIG Gun switch. Electrode contact
to work piece will cause an arc with MIG Gun switch depressed.
2.10 Shielding Gas Regulator Operating Instructions
WARNING
This equipment is designed for use with welding grade (Inert) shielding gases only.
NOTE
Shielding Gas is not required if the unit is used with self shielded FCAW (flux cored arc
welding) wires
Shielding Gas Regulator Safety
Gas regulators are designed to reduce and control high pressure gas from a cylinder or pipeline
to the working pressure required for the equipment using it. If the equipment is improperly
used, hazardous conditions are created that may cause accidents. It is the users responsibility
to prevent such conditions. Before handing or using the equipment, understand and comply
at all times with the safe practices prescribed in the manufacturer's instructions.
SPECIFIC PROCEDURES for the use of regulators are listed below.
1. NEVER subject the regulator to inlet pressure greater than its rated inlet pressure.
2. NEVER pressurize a regulator that has loose or damaged parts or is in a questionable
condition. NEVER loosen a connection or attempt to remove any part of a regulator until
the gas pressure has been relieved. Under pressure, gas can dangerously propel a loose part.
3. Do NOT remove the regulator from a cylinder without first closing the cylinder valve and
releasing gas in the regulator high and low pressure chambers.
4. Do NOT use the regulator as a control valve. When downstream equipment is not in use
for extended periods of time, shut OFF the gas at the cylinder valve and release the gas
from the equipment.
5. OPEN the cylinder valve SLOWLY. Close after use.
User Responsibilities
This equipment will perform safely and reliable only when installed, operated and maintained,
and repaired in accordance with the instructions provided. Equipment must be checked
periodically and repaired, replaced, or reset as necessary for continued safe and reliable
performance. Defective equipment should not be used. Parts that are broken, missing,
obviously worn, distorted, or contaminated should be replaced immediately.
The user of this equipment will generally have the sole responsibility for any malfunction,
which results from improper use, faulty maintenance, or by repair by anyone other than
an accredited repairer.
Operation
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