TM 55-1930-209-14&P-2
Table C-1. Preventive Maintenance Checks and Services for Seawater System (Continued)
B - Before
D - During
A - After
D - Daily
W - Weekly
M - Monthly
Q - Quarterly
S - Semiannually
A - Annually
ITEM
PROCEDURES
EQUIPMENT
ITEM
INTERVAL
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
Dirty Water Operations
Drain filter 15 seconds per each hour
of operation.
1)
Drain seawater filters by:
Seawater
Open seawater
Filter No
Valve No
1
22 and 26
2
23 and 26
1 and 2
22, 23 and 26
2)
After draining, close valves SW22
and/or 23, and SW26
3)
Record time/date of purging in opera-
tons log
6
Cooling Pump
a.
While supplying seawater to air condi-
tioning unit and/or chlorination system
using cooling pump (void 2 port) perform
the following:
1)
Check for normal operation and leaks
Class IIl leaks
2)
Check cooling water strainer input
Gauges
and output pressure gauges for
inoperable
normal operation
Pressure differences between the
two reading gauges is normal.
If pressure difference between the
two gauges reaches 2 HG, turn
handle on the cooling water strainer
to route the seawater flow through
dean strainer basket
Remove and clean dirty strainer
basket.
Record date/time of strainer basket
change in operation log
3)
When regulator outlet pressure gauge
drops 10 psi, replace in-line filters
4)
Inspect mounting bolts
C-7
