TM 10-4610-241-10
TO 40W4-13-41
2-9. OPERATING PROCEDURES - cont.
(7)
Close VENT PRODUCT WATER valve (7, figure 2-46) when no air bubbles are visible in PRODUCT
WATER FLOW meter (3, figure 2-58) and a steady stream of water (no bubbles) is coming out of the
VENT PRODUCT WATER vent pipe.
(8)
Set CHLORINE RUN/PRIME valve to RUN position (figure 2-60).
(9)
The ROWPU is now in full operation. Check the TDS of the product water (para. 2-15c), record the
findings in operator's log. If reading is above 1000 ppm, refer to Section II, Chapter 3,
Troubleshooting. Keep watching your gauges and lamps. Complete the operator's record (log) hourly.
Refer to table 2-3 for normal and trouble point indications.
(10)
Check chlorine residual. It should be 5 ppm unless otherwise specified by medical personnel.
(11)
Check pH. It should be between 5 and 9 units.
Table 2-3. Normal and Trouble-point Gauge Indications.
Gauge/Indicator
Normal Reading
Trouble point reading
CARTRIDGE FILTER
0 to 20 psid
Over 20 psid
MULTIMEDIA FILTER
10 psid or less, not to exceed 5
psid of log reading at startup
Either over 10 psid or not within5
psid of log reading at startup
RAW WATER FLOW
27 to 40 gpm
Drop to 25 gpm or less
BRINE FLOW
16 to 24 gpm
Below 15 gpm
PRODUCT WATER FLOW:
SALT WATER
6 to 12 gpm
Below 6 and above 12 gpm
FRESH WATER
Up to 16 gpm
Above 16 gpm
BRACKISH WATER
Up to 16 gpm
Above 16 gpm
R.O. PRESSURE PSI:
SALT WATER
Not to exceed 960 psig
Above 960 psig
FRESH WATER
Not to exceed 500 psig
Above 500 psig
BRACKISH
Not to exceed 500 psig
Above 500 psig
R.O. VESSELS
50 to 100 psid
Above 100 psid
TDS OF PRODUCT WATER
Below 1000 ppm
1500 ppm or above
2-99
