Haskel 8AG Serie Instructions De Fonctionnement Et D'entretien page 4

Figure 1. 8AGD Series Aftercooling Diagram.
In the 8AGT series two stage boosters (Figure 2.), where higher maximum temperatures can result due to
high compression ratios, the hot output gas line from the first stage pump is "intercooled" by passing
through the plenum cooler prior to entering the second stage pump. The hotter, higher pressure output
line from the second stage pump is then "aftercooled" by passing through the plenum cooler prior to the
final output port.
Figure 2. 8AGT Series Intercooling / Aftercooling Diagram.
Under certain severe operating conditions, it may be necessary to slow down the cycling of the gas
booster to prevent overheating. It is very difficult to predict exactly when overheating may occur. To test,
install a thermocouple approximately one inch from the discharge port of the gas pumping section.
Temperatures above 300°F at this point will shorten gas piston seal life considerably.
Air Driven Gas Booster Compressor, 8" Drive AG Series • OM-12F
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