Operation - ESAB B Series Installation, Operation And Maintenance Manual

SECTION 4

4.2 OPERATION

A. Check consumables in torch for damage and be sure
they are correct for the material to be cut and gas to
be used (check against process data sheets starting
on page 23).
B. Set N , O and Air inlet gas pressures to 125 psig (8.6
2 2
bar) (flowing). Set H-35, methane inlet pressures to
100 psi.
C. Gas Flow Control (Figure 4-2).
1. Position PLASMA GAS select switch (SW-2) for
plasma gas to be used.
2. Position SHIELD GAS select switch (SW-3) for
shield gas or gases to be used.
3. Set SW-1 switch to start. Verify that N
is 125 psig (8.6 bars) while flowing.
4. Set SW-1 switch to CUT. Verify that O
is 125 psig (8.6 bars) while flowing.
5. Close any throttle valves not being used by
turning them clockwise.
SW-2
SW-3
Figure 4-2. Gas Flow Control
D. Console.
1. If current is to be set from console place the
remote panel switch in the PANEL position.
2. Set the cutting current on the output current dial.
pressure
2
pressure
2
PLASMA GAS
O N
2 2
SHIELD GAS
N +ALT
O +N
2
2 2
3. If current is to be set from the cutting machine
CNC, place the remote panel switch in REMOTE
position. Consult the CNC instructions for setting
currents.
Figure 4-3. Coolant Level Indicator
4. Check coolant level (see Figure 4-3). Coolant
level must be checked with the console main
power switch in the OFF position. The coolant
level must fall within the SAFE OPERATING
LEVEL indicated (See Section 3.5.G).
5. Place pilot arc high/low switch in the LOW posi-
tion.
6. Turn on the power source by placing the main
power switch in the ON position. The amber light
to the left of the switch will come on.
7. Check coolant pressure. The pump pressure is
factory set between 80-90 psig (5.5 to 6.2 bar).
8. Complete setting the gas flow rates by following
the two examples on the next two pages.
E. Set the arc voltage from the suggested arc voltage
values given in the process data sheets.
Arc voltage and piercing height will be set from the arc
voltage control or from the CNC. Consult instructions
supplied with your equipment.
34
OPERATION
NOTE