Use Hypertherm premixed coolant (028872) when operating in a temperature range of -10°C – 40°C
(14°F – 104°F).
If you use shield water, the temperature range for cutting system
operation and storage is reduced to 0°C – 40°C (32°F – 104°F).
If it is possible for the temperature to go below -10°C (14°F) when the cutting system is not in use, adjust
coolant propylene glycol concentration to 50% to prevent damage to cooling system components.
Operating your plasma cutting system below -10°C (14°F) is not
recommended due to reduced consumable life and performance.
To increase the coolant propylene glycol percentage, add 100% propylene glycol (028873) to the
premixed Hypertherm coolant (028872) according to the following calculation. The maximum percentage
of propylene glycol should never exceed 50%. Also refer to Calculations for total coolant volume estimates
on page 263.
Table 15 - Calculate the correct quantity of propylene glycol
Total system coolant volume (in liters)
X 0.4 =
Total volume in liters of 100% propylene
glycol to add
Total system coolant volume (in U.S. gal-
lons)
X 0.4 =
Total volume in U.S. gallons of 100%
propylene glycol to add
Coolant requirements for operation in temperatures above 40°C
(104°F)
Use the correct treated water mixture as coolant when you operate the cutting system at temperatures that
stay higher than 40°C (104°F).
For operating temperatures more than 40°C (104°F) and that can never go at or below 0°C (32°F) use
treated water with no propylene glycol as coolant.
For operation in very warm temperatures, treated water provides the best cooling properties.
Treated water is a mixture of purified water that meets the Purity
requirements for coolant water on page 60 and 1 part benzotriazole
(128020) to 300 parts of water. Benzotriazole acts as a corrosion
inhibitor for the copper components inside of the cutting system.
Qualifications and Requirements
2
59811530Instruction ManualXPR460
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