Hypertherm MAXPRO200, Instruction Manual

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64 MAXPRO200 Instruction Manual 807700 Revision 1
Installation
Custom Coolant mix for cold operating temperatures (below -12° C / 10° F)
Use the chart below to determine what percentage of propylene glycol to use in the mixture.
Mix 100% propylene glycol (028873) with the premixed Hypertherm coolant (028872) to increase the percentage of
glycol in the premixed Hypertherm coolant. The 100% glycol solution can also be mixed with purified water (see the chart
below for water purity requirements) to achieve the required protection from freezing.
Note: The maximum percentage of propylene glycol should never exceed 50%.
Freezing Point of Propylene Glycol Solution
CAUTION!
For operating temperatures colder than the temperature stated above, the percentage of propylene
glycol must be increased. Failure to do so could result in a cracked torch head, hoses or other damage
to the torch coolant system due to freezing.
0
0
0
0
0
0
0
0
-7
-6
-5
-4
-3
-2
-1
10
20
30
40
0 10 20 30 40 50 60
-57
-51
-46
-40
-34
-29
-23
-18
-12
-7
-1
4
Te
mp
er
at
ur
e
% of Propylene Glycol
Hypertherm pre-mix
(028872)
Maximum glycol percentage
°C °F