TM 10-4610-241-10
TO 4OW4-13-41
Table 3-2. Operator Troubleshooting (ROWPU) - cont.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11.
12.
R.O. PUMP SHUTS DOWN BY ITSELF; R.O. PUMP LOW PRESSURE LAMP COMES ON - cont.
Step 4.
Check to see if MULTIMEDIA FILTER gauge has risen 5 psid over reading at startup.
a.
If yes, backwash multimedia filter (para. 2- 10).
b.
If no, go to step 5.
Step 5.
Make turbidity test of water taken from DRAIN NO. 1 CARTRIDGE FILTER valve (figure 2-59).
a.
If water is turbid, shut down ROWPU in normal manner (para. 2-14) and change cartridge filter tubes
(para. 3-5).
b.
If water is clear, notify unit maintenance.
R.O. PUMP SHUTS DOWN AUTOMATICALLY; R.O. PUMP HIGH PRESSURE LAMP GOES ON.
WARNING
If high pressure relief valve did not activate before R.O. pump high pressure switch,
Step 1.
Step 2.
Step 3.
Step 4.
notify unit maintenance. Continued operation may injure personnel or damage the
equipment.
If high pressure relief valve did not open, notify unit maintenance.
Check brine hose for kinks.
Unkink hose.
Clean R.O. elements (para. 2-13) then attempt to start normal operation (para. 2-9).
If R.O. PUMP RESET switch does not turn off R.O. PUMP HIGH PRESSURE lamp, there may be a
defective switch. Notify unit maintenance.
13.
BACKWASH PUMP DOES NOT START WHEN START BACKWASH SWITCH IS SET TO START.
Step 1.
Check that BACKWASH PUMP CB-2 circuit breaker in junction box is set to on (up).
Reset BACKWASH PUMP CB-2 circuit breaker to on (up).
3-13
