Section 2
DESCRIPTION
20
the receiver/sump. Also, should fuel supply level
drop near bottom of the fuel tank, a switch will shut
down the machine before the engine actually runs
out of fuel.
2.11 AFTERCOOLER AIR SYSTEM, FUNCTIONAL
DESCRIPTION
Refer to Figures 2-3B and 2-6. The purpose for the
aftercooled system is to operate the air compressor
in conditions when compressed air temperatures
required to be 10°-25°F (5 to 13°C) over ambient
temperature.Two discharge valves are provided on
all 900XH -1350XH compressor models. One
valve is labeled standard air and one valve is
labeled aftercooled air. Closing the standard air
(non-aftercooled) valve completely forces the air
flow the from receiver tank to the aftercooler. The
ambient air, which is drawn through the aftercooler
by the engine fan, cools the compressed air as it
passes through the aftercooler core. Cooled air
enters the moisture separator where condensation
is removed from the cooler air and discharged. This
condensate does carry some oil and it should be
disposed of properly in accordance with local regu-
lations. From the moisture separator the com-
pressed air goes to the compressor service valve.
After-cooler system should not be
operated in ambient conditions below
32º F (0ºC). If it is necessary to oper-
ate in these conditions, Sullair can
supply optional equipment to accom-
modate this requirement. To operate
in the non-aftercooled mode close the
aftercooler service valve completely
and open non-aftercooler valve.
NOTE
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