Hypertherm HPR800XD Auto Gas Rev.2 - Manual (Page 97)

InstallatIon
HPR800XD Auto Gas – 806500 3-57
Torch coolant requirements
Premixed coolant for standard operating temperatures
10/16/08
Torch coolant requirements
The system is shipped without any coolant in the tank. Before fi lling the coolant system, determine what coolant mix is
correct for your operating conditions.
Observe the warning and cautions below. Refer to the Material Safety Data Sheets appendix for data on safety,
handling, and storage of propylene glycol and benzotriazole.
DANGER
C OOLANT CAN BE IRRITATING TO SKIN AND EYES AND
HARMFUL OR FATAL IF SWALLOWED
Propylene glycol and benzotriazole are irritating to skin and eyes, and harmful or fatal if
swallowed. Upon contact, fl ush skin or eyes with water. If swallowed, seek immediate medical
attention.
CAUTION
Never use automotive anti-freeze in place of propylene glycol. Antifreeze contains corrosion
inhibitors that will damage the torch coolant system.
Always use purifi ed water in the coolant mixture in order to prevent damage to the pump and
corrosion in the torch coolant system.
Defi nitions
Ambient temperature – The temperature of the room in which the chiller is being used.
Chiller operating temperature – The temperature of the coolant inside the chiller.
Premixed coolant for standard operating temperatures
Use Hypertherm premixed coolant (028872) when operating in an ambient temperature range of -12° C to 40° C
(10° F to 104° F), and when operating at chiller process temperatures of 4° C to 35° C (59° F to 95° F). Refer to the
custom coolant mix recommendations, if temperatures during operation are ever outside of this range.
Hypertherm premixed coolant consists of 69.8% water, 30% propylene glycol, and 0.2% benzotriazole.