Welder Operation; Stick Welding; Tig Welding - Lincoln Electric RANGER 405D Operating Manual

Welder Operation

ELECTRIC SHOCK can kill
• Do not touch electricity live parts or electrode with skin
or wet clothing.
• Insulate yourself from work and ground.
• Always wear dry insulating gloves.
FUMES AND GA S E S
can be dange ro u s
• Keep your head out of fumes.
• Use ventilation or exhaust fan to remove fumes from
breathing zone.
W E L D I NG SPA R KS can
cause fi re or ex p l o s i o n
• Keep flammable material away.
• Do not weld upon containers which have held
combustibles.
A RC RAYS can burn
• Wear eye, ear and body protection.
Stick/TIG (Constant Current) Welding
Connect welding cables to the positive and negative output studs
as appropriate to process being performed. The high inductance
negative output receptacle "
rating of this receptacle is 335amps @ 50% duty cycle. Thermal
protection is provided for this output. Start the engine, set the idler
switch to the desired operating mode, and set the C.V./C.C.
switch to C.C. Set the "Output Control" dial to the desired welding
current and the machine is ready for welding. Adjustment of the
welding current can be made with the "Output Control" dial or a
"Remote Output Control" using K857 and K864 remote control kit.
While in Constant Current Mode the Open Circuit Voltage (OCV)
is held to a value less than 8 volts for added operator safety, Refer
to "Welder Controls – Function & Operation ROCV" for further
details

Stick Welding

The Ranger 405D can be used with any DC stick electrode within
the rating of the unit.

TIG Welding

The Ranger 405D can be used for a variety of DC tungsten inert
gas (TIG) welding applications. Arc initiation may be by "scratch"
starting, or by use the K930 Hi-Freq unit. Scratch starting is not
recommended for critical work, because of the risk of tungsten
inclusions in the weld, and there is also a risk of damage to the
tungsten electrode. For more information on TIG, (or GTAW
welding, as it is sometimes called) refer to JFLF 834, a Guidebook
on Gas Tungsten Arc Welding, available from The Lincoln Electric
Company.
The Hi-Freq unit must be installed per instructions in Installation
Instructions Section of this manual, and the Ranger 405D should
be set for High Idle for proper operation.
IMA 608D
" is for stick/TIG welding. The
Ranger 405D
W A R N I NG
Health aspects of the use of thoriated tungsten electrodes
Thorium oxides are found in thoriated tungsten electrodes up to
4.2%. Thorium is radioactive and may present hazards by
external and internal exposure. If alternatives are technically
feasible, they should be used, however several studies carried out
on thoriated electrodes have shown that due to the type of
radiation generated, external radiation risks - during storage,
welding and disposal of residues - are negligible under normal
conditions of use.
On the contrary , during grinding of electrode tips there is
generation of radioactive dust, with the risk of internal
exposure. It is therefore necess ary to use local exhaust
ventilation to control the dust at its source, complimented if
necessary by respiratory protective equipment. The risk of internal
exposure during welding is considered negligible since the
electrode is consumed at a very slow rate.
Precautions must also be taken to control any risk of exposure
during the disposal of dust from any grinding devices.
Wire Feed (Constant Voltage) Welding
Connect a wire feeder to the Ranger 405D and set welder
controls according to the instructions under the heading
"Connection of Lincoln Electric Wire Feeders".
The Ranger 405D permits use of a broad range of Innershield,
Outershield & solid wire electrodes within the rating of the
machine.
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