TM 55-1925-282-14&P
0005 00
! CAUTION
Increase system pressure slowly. Failure to comply with this caution will cause damage
to the reverse osmosis membranes.
9. At ROWPU 1 flow control panel (figure 9, item 9), slowly increase system pressure by rotating the SYSTEM
HIGH PRESSURE REGULATOR valve, RO-V-1-3 (figure 9, item 11) in the INCREASE direction until the
SYSTEM OPERATION PRESSURE gauge (figure 9, item 13) indicates 650 PSI (44.8 bar).
10. Allow the system to operate in this configuration for approximately two minutes. Ensure that all gauges
stabilize, and that all air bubbles are purged from the system as indicated by solid fluid streams flowing
through the BRINE flow meter (figure 9, item 12) and the PRODUCT WATER flow meter (figure 9, item 17).
! CAUTION
ROWPU maximum safe operating pressure is 950 PSI (65.5 bar). The system high
pressure cutout is set at 950 PSI (65.5 bar) 25 PSI (1.7 bar). Do not exceed 900 PSI
(62.1 bar) as indicated by the SYSTEM OPERATION PRESSURE gauge, or damage to
the ROWPU system could occur.
11. At ROWPU 1 flow control panel (figure 9, item 9), slowly adjust system pressure by rotating the SYSTEM
HIGH PRESSURE REGULATOR valve, RO-V-1-3 (figure 9, item 11) as necessary until the PRODUCT
WATER flow meter (figure 9, item 17) indicates 66 gallons (249.8 liters) per hour, to a maximum 900 PSI
(62.1 bar) as indicated by the SYSTEM OPERATION PRESSURE gauge (figure 9, item 13).
12. Verify that the ROWPU 1 gauges and indicators stabilize as follows:
a. At ROWPU 1 flow control panel (figure 9, item 9), verify the following:
! CAUTION
If bypassing the media filter, RO-PG-1-1, 20-micron filter outlet/5-micron filter inlet pres-
sure gauge, should not exceed 45 PSI (3.1 bar), or damage could occur.
(1)
HIGH PRESSURE PUMP INLET pressure gauge (figure 9, item 10) indicates a minimum of
10 PSI (0.7 bar) and a maximum of 45 PSI (3.1 bar).
(2)
The SYSTEM OPERATION PRESSURE gauge (figure 9, item 13) indicates less than
900 PSI (62.1 bar).
(3)
The PRODUCT WATER OUTPUT PRESSURE gauge (figure 9, item 16) indicates less than
20 PSI (1.4 bar).
(4)
The BRINE DISCHARGE PRESSURE gauge (figure 9, item 15) indicates approximately 10 PSI
(0.7 bar).
(5)
The BRINE flow meter (figure 9, item 12) indicates approximately 3.2 gallons (12.1 liters) per minute.
(6)
The PRODUCT WATER flow meter (figure 9, item 17) indicates approximately 66 gallons
(248.8 liters) per hour.
b. At the ROWPU 1 system controller (figure 9, item 14), verify that the SALINITY METER (figure 13,
item 6) indicates that product water salinity is less than 500 parts per million (ppm), as indicated by
five or fewer LEDs lit.
0005 00-13