DANGER
COOLANT 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, flush skin or eyes with water. If swallowed, drink water and call a
physician immediately. Do not induce vomiting.
Torch coolant requirements
The power supply is shipped without any coolant in the tank. Before filling 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.
Caution: Never use automotive anti-freeze in place of propylene glycol. Antifreeze
contains corrosion inhibitors that will damage the torch coolant system.
Always use purified water in the coolant mixture in order to prevent damage to
the pump and corrosion in the torch coolant system.
Standard installation
Use Hypertherm premixed coolant (028872) when operating in a temperature range of 0° C to 40° C
(32° F to 104° F). Refer to the non-standard installation recommendations, if temperatures during operation are ever
outside of this range.
Hypertherm premixed coolant consists of 69.9% water, 30% propylene glycol, and 0.1% benzotriazole.
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