Qualifications and Requirements
XPR300 Instruction Manual 809480 55
Coolant requirements for operation between -10°C – 40°C (14°F – 104°F)
Use Hypertherm premixed coolant (028872) when operating in a temperature range of -10°C to
40°C (14°Fto104°F).
If using shield water, the temperature range for cutting system operation
and storage is reduced to above 0°C to 40°C (32°F to 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 XPR 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 calculation below. The maximum
percentage of propylene glycol should never exceed 50%.
* Refer to Estimate the total coolant volume for your cutting system on page 254.
Coolant requirements for operation in temperatures above 40°C (104°F)
For operating temperatures above 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 operations 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 56 and 1 part benzotriazole
(128020) to 300 parts of water. Benzotriazole acts as a corrosion
inhibitor for the copper coolant system inside of the cutting system.
Total system coolant
volume (in liters)*
X 0.4 = Total volume in liters of 100% propylene glycol to
add
Total system coolant
volume (in US gallons)*
X 1.514 = Total volume in US gallons of 100% propylene
glycol to add
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