CLEAN/lNSPECT/REPAIR HEAT EXCHANGER
Dry cleaning solvent (Item 13, Appendix E)
Detergent (Item 2, Appendix E)
Heat exchanger removed.
Dry cleaning solvent P-D-680 (safety or Stoddards Solvent)
is potentially dangerous. Avoid repeated and prolonged
breathing of vapors and skin contact with the liquid. Do
not use near open flame, arcing equipment, or other igni-
tion sources. Always wear eye protection and protective
clothing. Flash point of P-D-680 is 100° to 138° F (38° to
Clean heat exchanger whenever it is removed for any
Remove carbon deposits from heat exchanger by flushing thoroughly with P-D-680 dry cleaning
solvent. Shake out excess solvent.
Wash heat exchanger by flushing thoroughly with mixture of one part detergent and one part
Rinse heat exchanger in clear water and shake out excess.
Allow to drain from both ends. No
special drying method is necessary.
Inspect heat exchanger for cracks, broken welds, corroded or burned areas, severe dents, and
other damage which could cause leakage. Replace damaged heat exchanger.
Check exhaust end of heat exchanger for stripped threads. Replace heat exchanger if threads are