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Operation
Ground Clamp Attachment
Connect the GROUND CLAMP AND CABLE to the workpiece to be cut or to the metallic workbench. Take the following
precautions:
•
Ensure that the GROUND CLAMP is attached with a good connection to an area of the workpiece that is clean and
free from any coatings such as paint, rust, oil/grease, or scale.
•
Make ground connections as close as possible to the cutting area to reduce EMI.
•
Do not make a ground connection on the piece which is to be removed.
•
The GROUND CLAMP must be attached to the workpiece while cutting.
Power ON the System
Set the POWER SWITCH on the rear of the machine to the ON position. If the input voltage is suitable, the INCOMING
POWER LED will turn on.
Checking Air Supply Quality
•
To check supplied air quality, activate and deactivate the PLASMA TORCH so there is no active arc but air flow
continues (post-flow). Place a welding filter lens in front of the PLASMA TORCH. Any oil or moisture in the air will be
visible on the lens.
•
DO NOT initiate pilot arc while checking air quality.
Performance Data Plate & Duty-Cycle
On the machine, there is a plate that includes all the operating specifications for your new unit. The serial number of the
product is also found on this plate.
The duty-cycle rating of a plasma cutting machine defines how long the operator can cut and how long the plasma cutting
machine must rest and be cooled. Duty-Cycle is expressed as a percentage of 10 minutes and represents the maximum
cutting time allowed. The balance of the 10-minute cycle is required for cooling.
For example, a plasma cutting machine has a duty-cycle rating of 30% at the rated output of 90A. This means with that
machine, you can cut at 30A output for three (3) minutes out of 10 with the remaining seven (7) minutes required for
cooling. The duty-cycle of your new plasma cutting machine can be found on the data plate affixed to the machine. It
looks like the diagram below. Referring to the sample below, the "X" row lists duty-cycle percentages while the "I2" row
lists the amp draw corresponding to the duty-cycle. Various duty-cycles at other amperages are listed on your data plate.
45 P (ITEM# 445)
CAUTION: DO NOT REGULARLY EXCEED THE DUTY-CYCLE OR DAMAGE TO THE
PLASMA CUTTING MACHINE CAN RESULT.
Serial NO.:
CAN/CSA-E60974-1:12
ANSI/IEC 60974-1: 2008
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