Matco Tools MA48 - Cutting Preparation; Cutting Operation

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4.2 Cutting Preparation
1、Connect the power cable to electrical outlet (the input voltage, refer to the section 3).
2、Connect the air hose to the air supply equipment and set pressure to ~60 psi (4.2 bar).
3、Connect the earth cable to the workpiece not being removed with cut.
4、Make certain operator is wearing proper safety glasses (1.7-6.0 DIN) gloves and protective clothing.
5、Make certain work area is clean and free of all hazordous liquids & gases.
6、Turn ON the power switch and check the power pilot lamp is illuminated.
7、Flip RUN/SET switch to SET position for 10 seconds to purge any moisture from the torch cable.
8、Flip RUN/SET switch to RUN and machine is ready to cut.
4.3 Cutting Operation
Notes: (1) In the event of alarm lamp ON when cutting, release torch trigger and allow unit to cool until
the alarm resets and lamp goes OFF, then press on the switch to start cutting again.
(2) In the automatic air purge mode (SET), pressing trigger will not ignite arc.
(3) In the event less than 30 psi air pressure is supplied to the machine, pressing trigger will
not ignite arc.
(4) After extended usage, nozzle and electrode should be changed to insure optimum cutting
performance.
(5) The alarm lamp will illuminate when shield cup is removed from torch head and torch will
not arc. Shiled cap must be re-installed securely in place and lamp will turn off.
Turn ON
the power
source
Release
torch
trigger to
stop arc
Tip finishes
cut on the
work-piece,
the cutting
arc changes
into pilot arc
again
Place
cutting tip
on edge of
surface
Press
trigger to
ignite the
pilot arc
Post-gas
cooling for
10 seconds
Slide tip to
work-piece,
changing the
pilot arc into
cutting arc
Arc
extinguished