TM 10-4610-215-1O
TM 08580A-10/1
Table 3-2. Troubleshooting (ROWPU) (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
b. If raw water flow is normal, go to step 4.
Step 4.
Check to see if MULTIMEDIA FILTER gage has risen 5 psid over reading at startup.
a. If yes, backwash multimedia filter (para. 2-26).
b. If no, go to step 5.
Step 5.
Make turbidity test of water taken from DRAIN NO. 1 CARTRIDGE FILTER valve (fig. 2-36).
a. If water is turbid, shut down ROWPU in normal manner (para. 2–31) and change
cartridge filter elements (para. 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.
Step 1.
Check to see if R.O. PRESSURE PSI gage is over 1150 psi.
a. Clean R.O. elements (para. 2–29) then attempt to restart R.O. pump.
b. 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 WITHIN 5 MINUTES FROM THE TIME THE START
BACKWASH SWITCH IS SET TO START (MECHANICAL TIMER - MODEL NO. 600-1).
Step 1.
Check that the timer recharge knob is in the idle position (fig. 2–71).
Rotate clockwise to the idle position as required.
Step 2.
Push START BACKWASH switch (33, fig. 2-4) up to START position. Inspect timer
recharge lever to see if the lever has been pulled to the right to rotate the recharge knob
(fig. 2-71).
Manually push lever to the right as required.
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