Schulz MTS 150 Compact Manual De Instrucciones página 32

Operation at 220 V
The initial position of the switch is for 220 V. With the electric circuit closed, the welding equipment operates at
the rated voltage of 220 V. In order to prevent the sudden change of voltage, make sure the screw is well faste-
ned on the left side of the switch so as to "lock" the desired voltage. When performing this maneuver, keep the
equipment disconnected from the power supply.
Operation at 127 V
In order to operate the equipment at 127 V of rated voltage, first disconnect the equipment from the power sup-
ply. Then remove the screw on the left side and fasten it to the right side of the selector switch so as to "lock"
the voltage in 127 V.
Consideration about installation
Before turning on the equipment, make sure the voltage (127 V or 220 V), phase (single phase) and frequency
(60Hz) of the power supply match the values informed on the equipment and on Table 1. Models with two volta-
ges (e.g., 127/220 V) are connected to the highest voltage. To change the operating voltage, follow the procedure
aforementioned. Do not forget to check if the power supply cable has a proper section to stand the input current
required by the equipment, as indicated in Table 6.1. The power supply must feature proper protection fuses and
circuit brakers. It is recommended:
POWER SUPPLY
220V
Rod holder
Part to be welded
Ground clamp
FIGURE 8.2
In order to ground the equipment, connect the ground wire of the power cable to the grounding system installed
in the workplace. Do not use the neuter of the grid to make the grounding of the equipment. The proper grounding
of the equipment prevents electric shocks!
In operation, the welding equipment may produce disturbances in the power supply to other users, depending on
the conditions and connection points. Therefore, check the proper dimensioning of the electric circuits and the
power supply outlet before turning on the equipment.
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