CIGWELD 250i Transmig, Руководство по обслуживанию

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TRANSMIG 250i TROUBLE SHOOTING
TROUBLE SHOOTING 6-4 Manual 0-5188
After the power to the unit is turned on, similar measurements can be taken in volts (both AC and DC). For some
of these it would be better to use an oscilloscope and will be noted “*”. Also the measurement from the DC+ to
R20 is no longer beneficial.
• * DC+ to GND PRI: the rectified sine wave of the amplitude of the AC Input Line.
• * Large Upper heat sink to GND PRI: rises exponentially from 0VDC to the peak of the AC line with a quick
up tick when the inrush relays close (roughly 1.4s after the power is applied). Shortly thereafter (~0.2s) the
voltage will steadily ramp to 400VDC when the PFC turns on.
• P14-1 to P14-5: This is the primary referenced Bias supply and should read 15VDC +/- 0.5V shortly after
power is applied.
• P10-1 to P10-5: The first secondary referenced Bias supply should read 24VDC +/- 1.0V
• P10-4 to P10-5: Bias supply, -15VDC +/- 0.5V
• P10-6 to P10-5: Bias supply, 15VDC +/-0.25VDC
6.04 Routine Service and Calibration Requirements
!
WARNING
There are extremely dangerous voltage and power levels present inside this Inverter Power Source. Do
not attempt to open or repair unless you are an accredited CIGWELD Service Provider. Disconnect the
Welding Power Source from the Mains Supply Voltage before disassembling.
Routine Inspection, Testing & Maintenance
The inspection and testing of the power source and associated accessories shall be carried out in accordance with
Section 5 of AS 1674.2 - 2007: Safety in Welding and Allied Processes-Part 2 Electrical. This includes an insula-
tion resistance test and an earthing test to ensure the integrity of the unit is compliant with Cigweld's original
specifications.
If equipment is to be used in a hazardous location or environments with a high risk of electrocution as outlined in
AS 1674.2 - 2007, then the above tests should be carried out prior to entering this location.
A. Testing Schedule
1. For transportable equipment, at least once every 3 months; and
2. For fixed equipment, at least once every 12 months.
The owners of the equipment shall keep a suitable record of the periodic tests and a system of tagging, includ-
ing the date of the most recent inspection.
A transportable power source is deemed to be any equipment that is not permanently connected and fixed in
the position in which it is operated.