TM 55-1930-209-14&P-19
Table 4-2. Preventive Maintenance Checks and Services for ROWPU System (Continued)
B -
Before
D -
Daily
Q - Quarterly
D -
During
W -
Weekly
S - Semiannually
A -
After
M -
Monthly
A - Annually
INTERVAL
ITEM
PROCEDURES
EQUIPMENT
ITEM
TO BE
CHECK FOR AND HAVE
IS NOT READY/
NO.
INSPECTED
REPAIRED OR ADJUSTED
AVAILABLE IF
B D A D W M Q S A
AS NECESSARY
(g) Turn cooling water flowmeter
OFF by closing valve at bottom
of flowmeter.
(h) Turn makeup water flowmeter
OFF by closing valve at bottom
of flowmeter.
(i) Turn function switch on control
cabinet to FLUSH.
(j) Allow seawater to flow thru
chlorination unit for about 5 min-
utes, then turn function switch on
control cabinet to OFF/RESET.
(k) Open chlorination valve CU 9 to
allow chlorination unit to drain. If
sump appears to be overfilling,
partially close valve CU 9 to
reduce drain flow to sump.
(I) After chlorination unit has
drained, close valves CU 8 and
CU 9 to position C (OFF).
d. Drain and clean sludge buildup from brine
tank and holding tank.
7
Acid Tank
WARNINGS
Wear rubber gloves, safety goggles or
faceshield, and chemical dust mask when
working with acid crystals and acid solution.
Always add acid to water. Do not add water
to acid. If any acid crystals or solution
splash on skin, flush skin with water imme-
diately. Immediately flush eyes at eyewash
station if acid crystals or solution splash in
eyes.
a. Flush acid tank with sulphuric acid as fol-
lows:
4-9
