Cooling System Maintenance; Automatic Air Bleed Valve - Kohler SFGLD480 Operation & Maintenance Manual

The main and secondary circuits on dry-coolers, radiators or heat exchangers, are usually equipped with
automatic air bleed valves. Some come with a shut-off valve for overriding, but you must ensure they are open
during operation. To fill quickly, leave the shut-off valve open and remove the automatic bleed valves until only
liquid begins to flow out with no air, at which point you have to close the valve, without forgetting to refit the
automatic bleed valves and open said shut-off valve.
It is, in turn, both important and necessary that automatic bleed valves are installed at the highest, intermediate
points on the circuit, where there is a probability that air pockets (loops in the circuit) may occur. This way,
purging air pockets located at different points throughout the installation is ensured.
Fig. 4 - Diagram and fitting of automatic air bleed valves at high, intermediate points on the circuit
PRODUCT INFORMATION
IO-C-M-20-002e

COOLING SYSTEM MAINTENANCE

Fig. 3 - Automatic air bleed valve
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5.2.56
INDEX DATE
G
June 2016
O&M_2.002211.810_A_10_2016
Dep. 2
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