TM 55-1930-209-14&P-3
4-8.1.6 Temperature gauge (T1) and pressure gauge (P1 thru P5) replacement.
NOTE
Do not operate the ROWPU while performing the following procedures.
a.
Remove existing gauge.
b.
Apply pipe thread sealant to threads of replacement gauge and Install gauge.
c.
Ensure replaced gauge operates satisfactorily and does not leak when ROWPU operates.
d.
Record completion of maintenance in maintenance logbook.
4-8.1.7 Control station Indicator light bulb replacement. Replace indicator light bulb (P/N 60-18-131) as follows:.
a.
Open (OFF) switchboard circuit breaker P6 or P7 as appropriate Redtag circuit breaker with the following.
"WARNING - DO NOT ACTIVATE REPAIR BEING MADE".
b.
Unscrew lens to expose light bulb.
c.
Unscrew burned out bulb and Install replacement bulb.
d.
Reinstall lens.
e.
Close (ON) switchboard circuit breaker P6 or P7 and remove red warning tag.
4-8.1.8 Control station fuse replacement.
a.
Open (OFF) switchboard circuit breaker P6 or P7 as appropriate Redtag circuit breaker with the following'.
"WARNING - DO NOT ACTIVATE REPAIRS BEING MADE ".
b.
Open control station cover and remove 1 OA fuse from spring clip holder.
c.
Install new fuse and close control station cover.
d.
Close (ON) switchboard circuit breaker P6 or P7 and remove red warning tag.
4-8.2 Media filters.
4-8.2.1 Media replacement. When proper flow and filtration can no longer be attained by backwashing and flushing
(paragraph 4-7.2), then media replacement in the media tanks is required.
a.
Preliminary procedures.
(1)
Stop ROWPU selected for media replacement (paragraph 4-7.2.1).
(2)
Stop seawater pump by turning pump OFF/ON/START switch on ROWPU control station (Figure 3-1)
to OFF.
(3)
Drain selected media tank (or tanks) by disconnecting piping at lowest point and allowing water to
drain.
CAUTION.
Do not drop access cover into media tankafter opening. Protect cover lining of tank.
(4)
Attach a line to access cover on top of media tank Open cover and carefully remove from tank.
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