INTERCOOLER AND AFTERCOOLER. Never permit air flow to the intercooler or
3-9.
aftercooler tubes to become obstructed, and clean the surface of the tubes whenever deposits
o f oil, dirt and grease are observed. U s e a non-flammable safety solvent for cleaning
purposes.
3-10. SAFETY VALVES. The safety valves are provided to protect against damage from
overpressure. If either valve blows, and continues to blow for more than a minute, the com-
pressor should be stopped at once. Refer to Table 4-1, Compressor Troubleshooting Chart,
to determine the cause of the blowing safety valve.
3-4
