TM 55-1925-282-14&P
0024 00
c.
Press the FAULT RESET switch (figure 1, item 3).
d. Press the START switch (figure 1, item 4).
! CAUTION
Take great care when CLOSING the brine discharge valve during system operation.
Exceeding a brine discharge pressure of 25 PSI (1.7 bar) could damage the reverse
osmosis membranes.
e. Slowly, and without exceeding 25 PSI (1.7 bar) brine discharge pressure, throttle applicable the brine
discharge valve (table 1) in the CLOSED position until the BRINE DISCHARGE PRESSURE gauge
(figure 4, item 11) on the applicable flow control panel indicates 24 PSI (1.6 bar).
f.
Repeat steps 7a - 7e until the applicable ROWPU shuts down at 24 PSI (1.6 bar) to 25 PSI (1.7 bar).
g. Go to step 9.
8. Adjust the applicable brine discharge pressure cutoff to a lower setting as follows:
NOTE
Access to the valve misalignment shutdown switch adjustment screw is gained from the
top of the flow control panel. It is not necessary to open the flow control panel to gain
access to the adjustment screw.
a. Rotate the applicable brine valve misalignment shutdown switch adjustment screw (figure 6, item 9) a
maximum of 1/8th of a turn counterclockwise.
b. Verify that the BRINE DISCHARGE PRESSURE gauge (figure 4, item 11) reads 24 PSI (1.6 bar).
c.
Verify that the ROWPU is still running.
d. Repeat steps 8a- 8c until the applicable ROWPU shuts down between 24 PSI (1.6 bar) and 25 PSI (1.7
bar) as indicated by the BRINE DISCHARGE PRESSURE gauge (figure 4, item 11).
9. Press the FAULT RESET switch (figure 1, item 3) on the applicable system controller.
10. Perform the Follow-On Service procedure at the end of this work package.
REPLACE VALVE MISALIGNMENT SHUTDOWN SWITCH
REMOVAL
2. At 440V power panel No. 5, set to OFF, lock out, and tag out (FM 55-502) the applicable circuit breaker as
shown in table 1.
3. At the 24 Vdc control panel, set to OFF, lock out, and tag out (FM 55-502) the applicable circuit breaker as
shown in table 1.
4. CLOSE, lock out, and tag out (FM 55-502) the applicable inlet sea water supply valve as shown in table 1.
0024 00-15