Tweco 300 XT Ultra-Cut Plasma Cutting System - Manual (Page 46)

ULTRA-CUT 300 XT
3-22 INSTALLATION Manual 0-5274
3.17 Optional HE400 COOLER
Used in series with the existing cooling system of the Ultra-Cut XT™ series power supplies, the optional HE400
Cooler provides additional cooling when ambient temperatures exceed the units rated temperature. 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.