Table 2-4. Preventive Maintenance Checks and Services for Seawater System (Continued)
Q - Quarterly
S - Semiannually
A - Annually
CHECK FOR AND HAVE
IS NOT READY/
REPAIRED OR ADJUSTED
B D A D W M Q S A
Be sure O-rings on cover rest in
machined grooves before tightening
yoke screw securely.
c. Lubricate seawater pump motors and fit-
tings, if necessary, with grease as speci-
fied in manufacturer's manual.
d. Be alert for unusual equipment noises,
smells or overheating that might indicate
pending equipment or system maifunc-
a. When using seawater pumps 1 and 2
Class III leaks.
(void 2 starboard):
1) Check seawater system components
for normal operation and for leaks.
2) Inspect mounting bolts.
3) Regularly monitor seawater strainer
input and output pressure gauges for:
* A pressure difference of 2-4 Hg
between the pressure gauges is
* If the pressure difference reaches
8 Hg, turn handle on strainer to
route seawater flow through clean
* Remove and clean dirty strainer
b. Check gauges and tubing for cracks or
Class Ill leaks.
a. Drain seawater filters as follows:
Drain only filter(s) in active use. If only
one ROWPU system is in use with just one
seawater pump, then drain only filter(s) in
Clean Water Operations
Drain filter 15 seconds every 8 hours.