TM 55-1930-209-14&P-3
Table B-1. 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
ITEM
PROCEDURES
INTERVAL
TO BE
CHECK FOR AND HAVE
EQUIPMENT
ITEM
INSPECTED
REPAIRED OR ADJUSTED
IS NOT READY/
NO.
AS NECESSARY
AVAILABLE IF:
B D
A D W M Q
S
A
3) Close valve RO14 on hose connected
to small threaded drum bunghole.
4) Disconnect hose containing valve
R014.
5) Tip drum from vertical position and
remove using drum lifter and bridge
crane with 2-ton hoist.
NOTE
Membrane cleaning agent drum is normally
painted black.
6) Use drum lifter and bridge crane with
2-ton hoist to position drum to stand
so large bunghole is on bottom and
small bunghole is on top when drum is
tipped into place.
7) Connect hose containing valve RO14
to small threaded drum bunghole.
8) Connect hose containing valve R013
to large threaded drum bunghole.
4
Media Filters
a. Check each media filter unit for damage
and leaks. Check vent valve for proper
operation. Replace vent valve as
required. Unscrew existing air vent on
top of media tank and install new vent
(P/N 51896-1).
b. Backwash and flush media filters when
Pressure in P1
pressure difference between seawater
and P2 exceeds
pump discharge pressure gauge P1 and
35 psi.
media filter output gauge P2 exceeds 35
psi, when MEDIA FILTER LIGHT OK light
goes out, or when water sample taken
from cartridge filter assembly drain valve
R08 is dirty.
c. If HP pump diesel engine is operating:
1) Position valve RO15 from product
water flow to overboard flow.
B-9
