B-3
OPERATION
B-3
CUTTING CAPABILITY
The PRO-CUT 20 is rated at 20 amps, at 20% duty cycle on a 10 minute basis. 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 20 when cutting mild steel. (The graph plots cut thickness vs.
torch travel speed with a torch standoff of 0.15".
PRO-CUT 20
Lincoln's PRO-CUT 20
Aluminum vs Mild Steel Cut Capacity Chart
Recommended T
orch T
ravel
Speed
(IPM)
80% of Maximum Speed
100
80
60
40
20
0
0.062
0.125
0.187
0.250
Material Thickness
20 A
Thick Line: Aluminum
Thin Line: Mild Steel
Figure B.1
CONSUMABLE LIFE
The expected life for the Pro-Cut 20's electrode under normal operating conditions is approximately 1000
starts/cuts. An erosion of .060" is typical for end of electrode life, however, the electrode life 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 system.
