Tweco CE Ultima 150 - Manual (Page 26)

SECTION 4: OPERATION 20 Manual 0-2530
4.03 Basic Operation
NOTE
Frequently review the safety precautions at the front
of this manual.
1. Setup
Make sure the system is set up properly before operat-
ing. Check the following:
a. Input Voltage Connection
Check the power source for proper input voltage.
The voltage must be compatible ULTIMA-150
Power Supply.
NOTE
This step is particularly important if the input
power cable is not hard-wired to the power source,
and the system is moved frequently between loca-
tions.
b. Gas Connections
Make sure gas pressure regulators are connected
properly to the plasma welding system.
c. Work Cable Connection
Check for a solid and clean work cable connection
to the work piece. The area must be free from paint
and rust.
d. Torch Assembly and Connection
Check the torch for proper assembly and torch parts
for the application and appropriate front end torch
parts.
2. Turn on Gases
Turn gases on. Check that gases pressure is set to 35
psi (245 kPa).
3. Turn on System
Switch the Main Disconnect Switch (#1) to the ON
position.
4. Confirm LED indicators
PILOT ARC
PREVIEW ON CURRENT
SET
A
A
CURRENT
0.5-15
5-150 PREVIEW
ARC
VOLTS
A / V
A
LIMIT
A
PANEL
REMOTE
A
COOL PILOT DC GAS TEMP AC
A
V
RANGE
5 6 7 8 9
10
11 12 13 14
A-00822
Figure 4-5 Front Panel Detail
For normal operation, the following lights should be
GREEN when you turn on the power:
• AC light
• TEMP light
• GAS light
• COOL light
5. Select Current Range:
Select the current range desired (#13):
High 5-150 amps
Low 0.5-15 amps
6. Select Remote/Panel Mode:
PANEL (#14) -Current control is adjusted by the front
panel pot. Preview with Weld Current Preview switch.
REMOTE (#14) -Current control is adjusted by exter-
nal remote device (compatible with Ultima-150 cur-
rent control circuit). The front panel pot is nonfunc-
tional in the remote mode. Current preview is
operational.
7. Adjust Current Limiter:
The Current Limiter Control (#12) limits the maximum
output current of the power source. The current lim-
iter prevents damage to the welding torch or consum-
ables and can also provide more precise current con-
trol.
For example, in range 5-150 (#13) with the maximum
current limiter (#12) set to 150 amps, the maximum
setting (fully clockwise) on the front panel current con-
trol (#11) would represent 150 amps, and the mini-
mum setting (fully counter clockwise) would repre-
sent approximately 5 amps.