TM 10-4610-240-24
TM 08580C-24/2
TO 40W4-13-22
Table 2-2. Unit Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PIPING INSTALLATION
WARNING
ROWPU piping and components may contain extremely high pressure during and after
operation. If this pressure is not relieved before working on pipes or equipment, serious
injury or death may occur Be sure to open all drains and vents before beginning any work.
1. HIGH-PRESSURE RELIEF VALVE OPENS REPEATEDLY.
Step 1. Check R.O. PRESSURE gage.
a. If gage indicates 1100 psi or higher when valve opens, go to step 2.
b. If gage indicates less than 1100 psi, replace high pressure relief valve. Refer to
Step 2. Inspect R.O. vessels. Refer to TM 10-4610-240-10.
a. If R.O. elements are clogged but not damaged, flush R.O. vessels. Refer to TM
104610-240-10 .
b. If R.O. elements are damaged, replace R.O. elements. Refer to TM 10-4610-240 10 .
2. RUPTURE DISK RUPTURES.
Step 1. Replace rupture disk (TM 10-4610-240-10 ), high pressure switch (para 2-65) and pressure relief
valve (para 2-59).
Step 2. Operate ROWPU and note pressure reading on R.O. PRESSURE gage If pressure stays below
1000 psi, malfunction is fixed, continue with normal operation.
Step 3. Remove and inspect R.O. elements. Refer to TM 10-4610-240-10.
a. If R.O. elements are clogged but not damaged, flush R.O. vessels. Refer to TM
104610-240-10.
b. If R.O. elements are damaged, replace R 0. elements. Refer to TM 10-4610-240-10
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