C25000 O&S Manual
44
C25000-OM-EN-05
Note
When mixing coolant concentrate with water, do not use less than 40% or
greater than 60% concentration of coolant. Less than 40% gives
inadequate additives for corrosion protection. Greater than 60% can result
in coolant gelation and cooling system problems.
Do not use cooling system sealing additives.
Note
Do not use bottled drinking water because it often contains higher
concentrations of total dissolved solids.
The coolant must be changed at regular intervals in accordance with the
maintenance schedule.
The cooling system must be monitored regularly. This includes checking the
concentration of the antifreeze. The concentration of antifreeze to water must
never be allowed fall below 35% as the protective effects fall away rapidly
below this concentration.
Water quality:
Water quality is important to the performance of the cooling system. Distilled,
deionized, or demineralized water is recommended for mixing with antifreeze.
The water used in the cooling system should meet the following minimum
specifications for quality:
pH
5.5 - 9.0
Chlorides
<40mg/l
Sulphates
<100mg/l
Total Solids
<340mg/l
Total Dissolved Solids
<170mg/l
Water that deviates from the values in the table must be conditioned.