Tweco Ultima 150 - Manual (Page 27)

Manual 0-2472 21 SECTION 4: OPERATION
15. Quick Disconnect Torch Connector
Connects a PWH/M quick disconnect torch to the
power supply (or an older model torch that has been
retrofitted with the Adapter Kit).
16. Power Input Connector
Fitting on the rear panel through which the Primary
AC Input power cable is fed and wired to the main
circuit breaker and ground.
17. Work Cable Connector
Fitting on the rear panel which connects to the inside
of the unit. The work Cable Lug on the other end
should be securely attached to the work piece or ma-
chine.
18. Gas Connectors
Plasma (black) and shield (yellow) gas hoses connect
from the gas solenoids inside the unit on the front
panel through the back panel of the unit to the gas
regulators on the gas cylinders.
19. Standard Remote Interface Connector (J20)
Connects any remote device with 14 pin amp plug for
remote interface to the unit. Factory-wired to connect
to the TB1 terminal strip on the Logic Board inside the
unit, for Arc on and remote weld current.
20. Interface Knock-Out
Connects user's own remote interface to the unit. User
must make own connections to TB1. (See Appendix
III, Remote Wiring, for Control Signal Assignments.)
21. Coolant Filter
Coolant Filter connects to rear of unit by a bracket.
22. Coolant Reservoir
Coolant Reservoir is accessible from rear of unit. The
user can fill the Coolant Reservoir, check coolant con-
ductivity, and replace Deionizer Bag without remov-
ing Enclosure cover.
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 with the High-Low
Voltage selection within the 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.
3. Turn on System
Switch the Main Disconnect Switch (#1) to the ON
position.