water specifications are a general guide line for acceptable coolant quality. However, where strict
limits apply, a statement is made in the specification.
The water requirements refer to untreated water. When water is treated, some parameters will
change. Water treatments should be carried out by a specialized water treatment company,
taking the responsibility for the performance of the treated cooling water and the compatibility
with the materials in the cooling circuit. This includes not only the selection of the appropriate
additives, but also the correct application, monitoring of concentrations and properties, prevention
of sludge formation and maintenance of the system. This applies also to treatment with anti-
freeze products. They should be provided with suitable stabilizers and inhibitors.
Specifications also depend on the criteria mentioned below:
•
the type of cooling circuit:
• open
• Single Pass
• recirculation with cooling tower
• closed loop
Reference Description
(1) Machine
(2) Heat exchanger
(3) Cooling tower
(4) Make up water
(5) Blowdown
(6) Standard Atlas Copco specification
• the application:
•
standard (max water temperature 65°C / 149°F at the outlet)
• Energy Recovery (water temperature up to 95°C / 203°F)
A full instruction for handling cooling water data is available at Atlas Copco.
Instruction book
9829 3178 63 71
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