20-56. AFTERCOOLER INSPECTION (CONT).
Drycleaning Solvent (P-D-680) is TOXIC and flammable. Wear protective goggles, face
shield, and gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and
clothes, and do not breathe vapors. Keep away from heat or flame. Never smoke when
using solvent. The flashpoint for Type II Drycleaning Solvent is 140 degrees F (60 degrees
C) and Type III Drycleaning Solvent is 200 degrees F (93 degrees C). Failure to do so may
result in injury or death to personnel.
If personnel become dizzy while using cleaning solvent, immediately get fresh air and
medical help. If solvent contacts skin or clothes, flush with cold water. If solvent contacts
eyes, immediately flush eyes with water and get immediate medical attention.
Ensure water connections are open so cleaning solution can penetrate both water and air
sides of core.
Soak aftercooler core in tank filled with a solution of drycleaning solvent for 12 hours.
Remove core from tank and rinse thoroughly with steam cleaner or high pressure hot water rinse.
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with
effective chip guarding and personal protective equipment (goggles/shield, gloves, etc).
Failure to comply may result in injury or death to personnel.
To ensure debris is not forced farther into fins, direct stream of air opposite direction of
normal coolant and air flow.
Blow out air and water sides of core using compressed air.
Rinse core with clean drycleaning solvent to remove any excess oil or grease.
Remove drycleaning solvent from core using steam cleaner or high pressure hot water rinse.
Blow dry air and water sides of core using compressed air.
Visually inspect aftercooler core tubes and fins to ensure cleaning process has completely removed all
contamination. If contamination still exists, repeat cleaning procedure and inspection.
END OF TASK