Tweco 400 XT Ultra-Cut Plasma Cutting System With Automated Gas Control - Manual (Page 41)

ULTRA-CUT 400 XT
Manual 0-5306 INSTALLATION 3-19
3.15 HE400 COOLER
Used in series with the existing cooling system of the Ultra-Cut XT™ series power supplies, the HE400 Cooler provides neces-
sary additional water cooling for the torch head when cutting at over 300amps. The HE400 fan is thermally controlled to operate
whenever the Ultra-Cut fan and pump is on and the coolant temperature is above a predetermined level. It may come on anytime
while the main pump is operating.
!
WARNING
Do not disassemble the Cooler with the power applied or the coolant flowing. Dangerous 220 AC voltages and high
pressure liquid are present.
Locate the Cooler so that there is adequate ventilation in front of and behind the unit and do not place or stack anything on top
of the unit.
2’ (0.6 m)
2’ (0.6 m)
3”
76 mm
3”
76 mm
Art # A-09623
NOTE
Ensure the four coolant lines described below are connected and leak free before connecting power to J71.
Match the colors of the hoses to the front panel label. Supply lines are green and return lines are red. Facing the unit as shown
below, the left connections go to the Ultra-Cut XT™ power supply, the right connections go to the RAS1000 arc starter.