TM 10-4610-239-24
TM 08580B-24/3
Table 2-2. Unit Troubleshooting - Continued
Malfunction
Test or Inspection
Corrective Action
INSTALLATION PIPING
WARNING
ROWPU piping and components can 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.
If gage indicates 1100 psi when valve opens, go to step 2.
If gage indicates less than 1100 psi, replace high-pressure relief valve. Refer to
Step 2. Inspect R.O. elements. Refer to TM 10-4610-239-10.
If R.O. elements are clogged but not damaged, flush R.O. vessels. Refer to TM 10-
4610-239-10.
If R.O. elements are damaged, replace R.O. elements. Refer to TM 10-4610-239-
10.
2. RUPTURE DISK RUPTURES
Step 1.
Replace rupture disk (refer to TM 10-4610-239-10) and relief valve (refer to paragraph
NOTE
Refer to figure 2-8 for high-pressure switch support diagram.
Step 2.
Check for continuity between red (NO) and purple (COMMON) wires at terminal board
inside high-pressure switch.
If multimeter indicates continuity, go to step 3.
If multimeter does not indicate continuity, replace high-pressure switch. Refer to
2-40
