Tweco 100 Auto-Cut - Manual (Page 63)

Manual 0-4764 4-3 OPERATION
4.03 Operating Set-up
Follow this set-up procedure each time the system is operated:
WARNING
Disconnect primary power at the source before assembling or disassembling power supply, torch parts, torch
and leads assemblies or adding coolant.
A. Coolant Level Inspection
Check the coolant level in the coolant tank at the rear of the unit. If the tank is below 3/4 full, add coolant.
B. Torch Parts Selection
Check the torch for proper assembly. Install proper torch parts for the application per the Torch section of
the manual.
C. Input Power
Check the power source for proper input voltage. Make sure that Power Supply is set for the proper voltage.
Close main disconnect switch or plug unit in to supply primary power to the system.
D. Work Cable Connection
Check for a solid and clean work cable connection to the workpiece or cutting table. The connection area
must be free from paint and rust.
E. Torch Connection
Check that the torch is properly connected.
F. Gas Supplies
Connect desired plasma and shield gases. Make sure gas sources meet requirements. Check connections
and turn gas supply on.
Select the desired shield gas as follows:
1. If gas shield is desired, set shield selector switch to GAS position.
2. If Water Mist shield is desired, set shield mode selector switch to ‘H
2
O MIST’ position. Water must be
connected to the control console at the shield water connection.
NOTES
Tap water should only be used for shield gas.
If tap water pressure is over 100 psi (6.9 bar) there must be a Water Regulator (Catalog No. 8-6118) installed
between the water source and the Power Supply.
H. Plasma Gas Purge
Move the Power Supply ON/OFF switch to the ON position.
An automatic gas purge will remove any condensation that may have accumulated in the torch and leads
while the system was shut down. After the purge is complete, if the RUN/SET switch is in SET position,
gases will flow.
I. Amperage Selection
Select the desired current output amperage.