TM 55-1930-209-14&P-2
4-7.2.10.1 Cleaning and inspection
a.
Wipe clean exterior of pressure gauge with rag dampened with hot soapy water or an approved solvent.
Wipe dry with clean cloth.
b.
Visually inspect for damage or leaks. Correct leak by tightening connections. Replace damaged
pressure gauge.
4-7.2.10.2 Replacement
a.
Removal.
(1)
If chlorination unit valve CU11 is in position A, turn to position C. If chlorination unit valve CU11
is in position B, leave in that position.
(2)
Close seawater valves SW47 and SW48.
(3)
Remove pressure gauge.
b.
Installation. Install pressure gauge in reverse order of installation.
4-7.2.11 Seawater to chlorination In-line filter 3 (chlorination unit seawater supply line)
4-7.2.11.1 Cleaning and Inspection
a.
Wipe clean exterior of filter (Figure 1-5) with rag dampened with hot soapy water or an approved solvent.
Wipe dry with clean cloth.
b.
Visually inspect for damage or leaks. Correct leak by tightening connections. Replace damaged filter
assembly. Replace filter element when pressure gauge pressure drops from 10 psi to about 8 psi.
4-7.2.11.2 Filter element replacement. When pressure gauge adjacent to filter drops in pressure from 10 psi to about 8
psi, replace filter element as follows:
a.
If chlorination unit valve CU11 is in position A, turn to position C. If chlorination unit valve CU11 is in
position B, leave in that position.
b.
Close seawater valves SW47 and SW48.
c.
Use in-line hose bib to drain excess water from line, then close hose bib.
d.
Unscrew filter body and drain. Clean and replace filter element.
e.
Replace filter body to housing
4-7.2.11.3 Filter assembly replacement
a.
Removal.
(1)
Perform steps a thru d.
(2)
Disconnect piping from filter assembly.
(3)
Remove filter assembly.
b.
Installation. Install filter assembly in reverse order of removal in step a.
4-7.2.12 Seachest and ballast tank air escape valve
4-19
