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minal. Otherwise, welding output terminals may burn out by the heat caused by insufficient
connections.
z 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 means the welding time ratio for 10 minutes. This equipment is the rated duty cycle is
50%, namely, the welding time is 5 minutes or less. Be sure to take 5 minutes recess after 5
minutes welding.
<Caution>
z The equipment may be damaged due to overheat, if welding more than 5 minutes succes-
sively or short time recess after the welding.
8-5 Welding
Caution : Suffocation from welding fume
z Be sure to wear a fume proof mask in operation, because welding fume contains poisonous
gas and dust. Pay attention to the airflow direction and sufficient ventilation also in order to
prevent from inhaling the fume.
Caution : Injuries to eyes and skin
z Be sure to wear spark protection glass(es)(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)
Light Shielding Degree No.
7 8 9 10 11 12 13
Welding Current (A) 30-75 76-200 201-400
Caution : Fire
z Keep any inflammable items and easily burning items away from the place in welding, be-
cause welding splashes spatters.
Caution : Burns
z Be sure to wear leather gloves, apron, shoe covers, eye protection glass(es)(mask), safety
shoes, safety cap and long sleeve shirts, because welding splashes spatters.
<Caution>
z Never turn the output selector switch during welding, because it causes burnout of the switch.
(DGW311DM only)
8-5.1 DGW311DM
The equipment can be welding by 2 persons simultaneously.
Each person can adjust the welding current individually.
The current adjustable range by the current adjustable dial depends on the position each of the