Tweco 400 Ultra-Cut(October 2014) - Manual (Page 47)

ULTRA-CUT 100 XT/200 XT/300 XT/400 XT
Manual 0-5264 INSTALLATION 3-21
3.19 HE400XT COOLER
Used in series with the existing cooling system of the Ultra-Cut XT™ series power supplies, the HE400XT Cooler
provides necessary additional water cooling for the torch head when cutting at over 300amps. The HE400XT 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.
Included with the HE400XT are two 10’ hoses, supply (green) and return (red), that are to be connected to the match-
ing colors on left side of the HE400XT and to the supply and return fittings on the rear of the Ultra-Cut XT power
supply. Hoses to the RAS1000XT connect on the right side of the HE400XT.