TM 10-4610-240-10
TM 08580C-10/1
T.O. 40W4-13-21
Table 3-2. Troubleshooting (ROWPU) (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11.
R.O. PUMP SHUTS DOWN BY ITSELF; R.O. PUMP LOW PRESSURE LAMP COMES ON.
Step 1.
Check to see if booster pump is operating.
a. If pump is not operating, reset circuit breaker if necessary and try to restart pump. If pump will
not start, notify unit maintenance.
b. If booster pump is operating, check for clockwise rotation (from fan end).
Step 2.
Check to see if cartridge filter gauge reads over 20 psid.
If over 20 psid, change filter elements (paragraph 3-5).
Step 3.
Check RAW WATER gauge for normal flow.
a. If low flow exists, move raw water pump closer to source.
b. If raw water flow is normal, go to step 4.
Step 4.
Check to see if MULTIMEDIA FILTER gauge has risen 5 psid over reading at startup.
a. If yes, backwash multimedia filter (paragraph 2-10).
b. If no, go to step 5.
Step 5.
Make turbidity test of water taken from DRAIN NO. I CARTRIDGE FILTER valve (figure 2-38).
a. If water is turbid, shut down ROWPU in normal manner (paragraph 2-14) and change cartridge
filter elements (paragraph 3-5).
b. If water is clear, notify unit maintenance.
12.
R.O. PUMP SHUTS DOWN AUTOMATICALLY; R.O. PUMP HIGH PRESSURE LAMP GOES ON.
CAUTION
If HIGH PRESSURE RELIEF VALVE did not activate before R.O. PUMP HIGH PRESSURE switch,
notify unit maintenance.
3-12
