Operation, Cutting capability, Consumable life – Lincoln Electric PRO-CUT 55 SVM140-A User Manual

Page 17: Limitations

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CUTTING CAPABILITY

The Pro-Cut 55 is rated at 55 amps, at 50% duty cycle
on a 10 minute basis or 40 amps, at 100% duty cycle.
If the duty cycle is exceeded, a thermal protector will
shut off the output of the machine until it cools to the
normal operating temperature.

Figure B.1 shows the cut capacity of the Pro-Cut 55
when cutting mild steel. The graph plots cut thickness
vs. torch travel speed with a torch standoff of 0.15 in.
(3.8mm).

Example: 0.25 material

Amps

Speed (IPM)

FIGURE B.1 – LINCOLN’S PRO-CUT 55 MILD STEEL CUT CAPACITY CHART

CONSUMABLE LIFE

The expected life for the Pro-Cut 55's electrode under
normal operating conditions is approximately 320
starts/cuts. An erosion of .060 in. (1.5mm) is typical for
end of electrode life. However, the electrode may last
longer. A green and erratic arc will indicate definite
electrode failure, and the electrode should be
replaced immediately.

It is recommended that consumables be replaced in
complete sets. (Example: Electrode and Nozzle). This
will maximize the performance of the Pro-Cut 55 sys-
tem.

LIMITATIONS

Do not exceed output current and duty cycle rating of
machine. Do not use the Pro-Cut 55 for pipe thawing.

OPERATION

B-4

PRO-CUT 55