ESAB CIGWELD 220i, Руководство по эксплуатации, Страница: 26 / 94

OPERATION 4-2 Manual 0-5439
Transmig 220i
OPERATING MANUAL
1. Power Indicator
The power indicator is illuminated when the correct mains power is applied to the power source and
when the ON/OFF switch located on the rear panel is in the ON position.
2. VRD Indicator ON/OFF Lights
A VRD (voltage reduction device) is a hazard reducing device designed to reduce electric shock hazards
present on the output of welding power source when operating in MMAW (stick) mode. Note that
the presence of VRD should not be used as a substitute for the use of appropriate safety practices as
indicated in section one of this manual.
Both the green and red indicator lights only operate in MMAW (stick) mode.
The green VRD ON light illuminates (red light is off) when the VRD is active. Under this condition the
open circuit voltage of the unit is limited to below 35V DC, thus reducing the potential of serious electric
shock (such as when changing electrodes).
The red VRD OFF light illuminates (green light is off) when the VRD is inactive. Under this condition the
output voltage of the unit will be at welding potential which in some cases may exceed 35V DC.
3. Digital Amps Meter (Left Digital Display)
MIG Mode
This digital meter is used to display the pre-set (preview) Wirefeed Speed in Meters Per Minute (MPM)
in MIG mode and actual welding amperage of the power source when welding. At times of non-welding,
the digital meter will display a pre-set (preview) value of Wirefeed Speed. This value can be adjusted by
varying the Amperage Control Knob (4).
STICK and LIFT TIG Modes
The digital meter is used to display the pre-set (preview) amperage in STICK / LIFT TIG modes and
actual welding amperage of the power source when welding. At times of non-welding, the amperage
meter will display a pre-set (preview) value in both STICK and LIFT TIG modes. This value can be
adjusted by varying the Amperage Control Knob (4).
When welding, this digital meter will display actual welding amperage in all modes.
At the completion of welding, the digital meter will hold the last recorded amperage value for a period
of approximately 10 seconds in all modes. The amperage meter will hold the value until; (1) any of
the front panel controls are adjusted in which case the unit will revert to preview mode, (2) welding is
recommenced, in which case actual welding amperage will be displayed, or (3) a period of 10 seconds
elapses following the completion of welding in which case the unit will return to preview mode.
NOTE
The preview functionality provided on this power source is intended to act as a guide only. Some
differences may be observed between preview values and actual welding values due to factors
including the mode of welding, differences in consumables/gas mixtures, individual welding
techniques and the transfer mode of the welding arc (ie dip versus spray transfer). Where
exact settings are required (in the case of procedural work), it is recommended that alternate
measurement methods be utilised to ensure output values are accurate.