TM 10-4610-215-24TM 08580A-24/2c. Cleaning.Remove dirt and rust from discharge pipe, plug, and adapter.d. Inspec tion.Inspect discharge pipe, plug, and adapter for stripped or damaged threads.e. Replace.(1) Replace damaged or unserviceable discharge tube, plug, reducing adapter, and pipe fittings.(2) Replace damaged or unserviceable automatic pressure relief valve assembly.f. Installation. (Figure 2-93)NOTEPipe unions are not tightened until relief valve is installed. ApplyTeflon tape to pipe threads before making connections.(1) Install reducing adapter (4) in pipe tee (7).(2) Install relief valve (3) in reducing adapter (4).(3) Install elbow (6) on automatic pressure relief valve (3).(4) Install adapter (5) in elbow (6).(5) Install plug (2) in relief valve (3).(6) Connect discharge pipe coupling nut (1) to adapter (5).(7) Perform operational check.2-79. RUPTURE DISC ASSEMBLY.a. General.The rupture disc assembly IS a safety device which prevents progressive pressure buildup in theR.O. vessels. It is located between the R.O. pump and the pulse dampener. The rupture disc opens (ruptures) at1425 psi (100 kg/cm2). This paragraph describes removal, cleaning, inspection, repair, and installation of therupture disc assembly.b. Removal. (Figure 2-94)WARNINGROWPU piping and equipment can contain extremely highpressure during and after operation. If this pressure is notrelieved before working on these pipes or equipment, seriousinjury or death may occur. Be sure to open all drains and ventsbefore beginning any disassembly.(1) Remove rupture disc assembly (6) from bushing (5).(2) Remove bushing (5) from pipe.(3) Unscrew cap (1) from body (2).(4) Remove spacer (3) and rupture disc (4) from body (2).c. Cleaning.(1) Clean pipe and surrounding area with brush and soap solution.(2) Clean all parts of rupture disc assembly.(3) Clean all threads.(4) Particular attention should be paid to rupture disc and rupture disc seating surface.2-185
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