TM 10-4520-259-13&P
2-5.
CLEANING AGENTS. (CONT)
NOTE
Use only those authorized cleaning solvents or agents listed in Appendix F.
a.
Cleaning the Water Heater.
(1)
When using water to clean the heater; use a bucket and brush,
or a hose that supplies regular
household pressure. Keep water away from electrical parts or cover with plastic before cleaning.
(2)
After cleaning, allow the water heater to air dry.
CAUTION
Keep cleaning solvents, gasoline and lubricants away from rubber and plastic
parts. They will deteriorate material. (3) When cleaning rusty areas on metal
parts, use dry cleaning agent (Item 14, Appendix F).
b.
Leakage Definitions for Operator PMCS.
Class I
Seepage of fluid (as indicated by wetness or discoloration) not great enough to form
drops.
Class II
Leakage of fluid great enough to form drops but not enough to cause drops to drip
from the item being checked.
Class III
Leakage of fluid great enough to form drops that fall from the item being inspected.
CAUTION
Equipment operation is allowable with minor leakage such as Class I or Class II.
However, consider fluid capacity of the system that is leaking. If in doubt, notify
your supervisor. When operating with Class I or II leaks, continue to check fluid
levels as required in your PMCS instructions. Class III fluid leaks must be reported
to your supervisor or unit maintenance.
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