Table 3-3. Preventive Maintenance Checks and Services for ROWPU 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
c. If HP pump diesel engine is operating:
1) Position valve RO15 from product
water flow to overboard flow.
Do not abruptly stop engine except in an
emergency. When shutting down engine,
always reduce throttle and operate
engine for 5 minutes at low idle to allow
hot areas to cool and turbocharger to
slow down while maintaining oil pressure
on turbine shaft.
2) Gradually reduce HP pump diesel
engine throttle setting to IDLE. Leave
engine idling and check oil and tem-
3) Open throttling RO7.
4) Stop coagulant pump and inhibitor
pump at control station by setting ON/
OFF switches to OFF.
5) After HP pump diesel engine has idled
for 5.minutes, stop engine by pushing
in shutdown lever.
6) Stop seawater pump by turning OFF/
ON/START switch on control station
d. Backwash media filter 1:
1) Position RO valves as indicated
O = Open X = Closed 1/20 = 1/2 open
A = Position A
B = Position B
C = Position C
RO Valve No.