TM 55-1925-282-14&P
0005 00
d. The SYSTEM OPERATION PRESSURE gauge (figure 9, item 22) indicates less than 50 PSI (3.4 bar).
e. The PRODUCT WATER flow meter (figure 9, item 26), indicates less than 1 gallon (3.8 liters) per hour.
6. Allow the system to operate in this configuration for approximately two minutes. Ensure that all gauges
stabilize, and that most of the air is purged from the system as indicated by a fluid stream with few or no
bubbles flowing through the BRINE flow meter (figure 9, item 21).
! CAUTION
Increase system pressure slowly. Failure to comply with this caution will cause damage
to the reverse osmosis membranes.
7. At ROWPU 2 flow control panel (figure 9, item 18), slowly increase system pressure by rotating the SYSTEM
HIGH PRESSURE REGULATOR valve, RO-V-2-3 (figure 9, item 20) in the INCREASE direction until the
SYSTEM OPERATION PRESSURE gauge (figure 9, item 22) indicates 400 PSI (27.6 bar).
8. Allow the system to operate in this configuration for approximately two minutes. Ensure that all gauges
stabilize, and that most of the air is purged from the system as indicated by fluid streams with few or no
bubbles flowing through the BRINE flow meter (figure 9, item 21) and the PRODUCT WATER flow meter
(figure 9, item 26).
9. At ROWPU 2 flow control panel (figure 9, item 18), slowly increase system pressure by rotating the SYSTEM
HIGH PRESSURE REGULATOR valve, RO-V-2-3 (figure 9, item 20) in the INCREASE direction until the
SYSTEM OPERATION PRESSURE gauge (figure 9, item 22) 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 21) and the PRODUCT WATER flow meter (figure 9, item 26).
! 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 2 flow control panel (figure 9, item 18), slowly adjust system pressure by rotating the SYSTEM HIGH
PRESSURE REGULATOR valve, RO-V-2-3 (figure 9, item 20) as necessary until the PRODUCT WATER flow
meter (figure 9, item 26), indicates 33 gallons (125 liters) per hour, to a maximum 900 PSI (62.1 bar) as indicated
by the SYSTEM OPERATION PRESSURE gauge (figure 9, item 22).
12. Verify that the ROWPU 2 gauges and indicators stabilize as follows:
a. At ROWPU 2 flow control panel (figure 9, item 18), verify the following:
! CAUTION
If bypassing the media filter, RO-PG-2-1, 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 19) indicates a minimum of 10 PSI
(0.7 bar) and a maximum of 45 PSI (3.1 bar).
0005 00-15