ESAB Precision Plasmarc Installation, Operation And Maintenance Manual For Residential Installation page 126

SECTION 5
Coolant In via
Power Cable
Coolant Out via
Pilot Arc Cable
Water Baffle
Nozzle Retainer
Crossover
Tube
Electrode Body
Pilot Arc Body
Swirl Baffle
Electrode
Nozzle
Shield Gas. Shield Gas. Shield preflow, cut shield and Shield Gas. Shield Gas.
•
postflow enter the torch through one connection.
These gases pass through:
the torch body,
§
the shield gas diffuser,
§
out the orifice in the shield cap surrounding
§
the plasma jet.
Power and Pilot Arc Lines. Coolant IN to the torch Power and Pilot Arc Lines. Power and Pilot Arc Lines. Power and Pilot Arc Lines.
•
is through the power cable (-). Coolant OUT from
the torch is through the pilot arc (+) line.
Water Cooling. Water Cooling.
Water Cooling. Water Cooling.
1. Coolant enters the torch through the power cable
(-),
2. circulates through the torch body and the
electrode,
3. crosses over to the nozzle (+) section of the torch
body through nonconductive crossover tubes,
4. travels back through the body and circulates
between the nozzle retainer and the nozzle,
5. back through the torch body to the junction box
via the pilot arc cable.
5-4
MAINTENANCE