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
6
Brine Tank
a. Check brine tank salt level and add salt
as necessary.
b. Check cooling water and makeup water
flowmeter and ammeter readings.
Adjust
water and brine feed control.
c. Check condition of cells for scale buildup.
Descale when necessary as follows:
1) Flush with seawater.
(a) Check that seawater system is
operating and providing sea-
water to chlorination system thru
seawater SW47 or SW48.
(b) Tum alarm ON/OFF switch on
control cabinet to OFF.
(c) Turn function switch on control
cabinet to OFF/RESET.
(d) Position chlorination unit (CU)
valves as indicated below:
O = open X = closed A = position A
B = position B C = position C
CU Valve No.
Valve Position
2
X
2A
X
3
B
5
A
6
X
6A
X
8
X
9
X
12
X
16
O
(e) Position valve CU4 halfway
between positions A and C to
reduce flow thru system.
(f) Turn brine pump ON/OFF
switch inside control cabinet
to OFF.
4-8
