Perform following during operation checks.
Check for leaks, paying special attention to all joints, valves, fittings, and piping Report uncorrectable leaks
to shift leader.
Check for loose or missing securements and fasteners. Tighten or replace as necessary.
Check wiring for loose connections Tighten as necessary
Be alert to unusual noises or overheating that might indicate a pending malfunction.
While ROWPU's are operating, periodically perform the following eight steps to ensure normal operation:
Monitor pressure gauges and flow indicators for normal readings listed below:
Monitor MEDIA FILTER OK Indicator light on control station If light goes out, check difference between
media filter output pressure gauge P1 and media filters output pressure gauge P2. If difference exceeds 35
psi, backwash media filters according to paragraph 4-14.2 In TM 55-1930-209-14 & P-3. if pressure
difference is acceptable, check indicator light. Replace bulb if faulty.
Monitor CARTRIDGE FILTER OK indicator light on control station. If light goes out, check pressure
difference between media filters output pressure gauge P2 and cartridge filter output pressure gauge P3. If
difference exceeds 12 psi, change cartridge cage assembly according to paragraph 4-14.1.1 in TM 55-
1930-209-14 & P-3. If pressure difference Is acceptable, check indicator light Replace bulb If faulty.
Monitor difference between HP pump discharge pressure gauge P4 and brine discharge pressure gauge
P5. If difference exceeds 25 psi, clean RO block membranes according to paragraph 4-14.4.2 In TM 55-
1930-209-14 & P-3.
Monitor EMS salinity, HP WATER PUMPS, POTABLE WATER TANKS, and CHLORINE STATUS display
pages for normal readings. Alarms are activated when any of these parameters exceed normal limits.
These Indications should be periodically checked, however, in case of alarm failures. When alarms sound,
turn off alarms as described In Chapter 8 (6) Monitor coagulant pump and inhibitor pump amber and red
indicator lights on pump control panel (Figure 13-10, 1 of 2). When amber light goes out, pump may be
malfunctioning Troubleshoot according to Table 4-1 in TM 55-1930-209-14&P-3. When red indicator light
comes on, supply drum may be empty. Replace drum, if necessary.
Monitor HP pump diesel engine gauges (Figure 13-7, 2 of 2) for normal readings listed below. If not
normal, troubleshoot according to paragraph 4-11 in TM 55-1930-209-14&P-3.
Normal (green) zone
Normal (green) zone
Slightly positive near zero
Normal (green) range
Periodically check product water quality being discharged for TDS (salinity) and pH according to TM 5-
6630-215-12. Obtain product water sample at valve R09. Make sure salinity reading is less than 1500 ppm
and pH factor is about 7. If readings are not within these values, troubleshoot according to Table 4-1 In TM
55-1930-209-14 & P-3.