Duty Cycle; Welding - Shindaiwa DGW300MS Owner's And Operator's Manual

① Stop the engine.
② Connect a welding cable to a crimping terminal, a welding rod holder (Wire
Feeder) and a material holder.
③ After connecting cables, be sure to close output terminal covers.
(1) Welding Rod / Gouging Rod
WELDING ROD HOLDER
or GOUGING TORCH
MATERIAL HOLDER
(1) Welding Rod / Gouging Rod
Welding Rod φ 2 .0 – φ 6 .0
Gouging Rod φ 3 .2 – φ 4 .0
<Caution>
Be sure to crimp a crimping terminal to a cable and connect the cable to welding
output terminal. Otherwise, welding output terminals may burn out by the heat
caused by insufficient connections.
Do not use a cable without a crimping terminal. If you use the cable, the
insulation is peeled off partly, to bind to an output terminal, the output terminal
may burn out by the heat caused by insufficient connections and also a bare part
of the cable may touch the bonnet to short-circuit.

8-4. Duty Cycle

Duty cycle is the percentage of time the load is being applied in a 10 minutes period.
For example, a 60% duty cycle represents 6 minutes of load and 4 minutes of no
load in a 10 minutes period.
<Caution>
The equipment may be damaged due to overheat, if welding more than duty
cycle.

8-5. Welding

Danger : Electromagnetic Interference
Person with a pacemaker of the heart, do not approach the equipment and
welding around the work site during work. May adversely affect the operation
of the pacemaker.
Caution : Suffocation from welding fume
Be sure to wear a fume proof mask during operation, as welding fumes
contain poisonous gas and dust. Pay attention to the airflow direction and
ensure there is sufficient ventilation in order to prevent from inhaling fumes.
Caution : Injuries to eyes and skin
Be sure to wear spark protection glasses/mask (Refer to the table below),
long-sleeve shirts, gloves, etc. in order to protect eyes and skin from harmful
spark in welding.
Standard for Spark Protection Glass (Japan Industrial Standard
No.
Welding Current (A)
(2) Semi-automatic Wire Feeder
CRIMPING
TERMINAL
MATERIAL HOLDER
7 8 9
30-75
- 20 -
(2) Semi-automatic Wire Feeder
Welding Wire
MIG/MAG : φ 0 .6 – φ 1 .2
Self-Shield : φ 0 .9 – φ 2 .0
10 11 12
76-200 201-400
WIRE FEEDER
CRIMPING
TERMINAL
)
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