Replace/Repair Pressure Vessel Assembly. (FIGURE 2-32)

TM 55-1905-223-24-7

2-31. Replace/Repair Pressure Vessel Assembly. (FIGURE 2-32)

This task covers: a. Service,

b. Removal,

c. Repair,

d. Replacement.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's,

Service task requires unit

to be in operation.

Kit, cleaning/preservation chemicals

06C-OVM500-000

Materials/Parts

Preformed packing P/N 2-116

Preformed packing P/N 2-228

Scrub brush, Item 8, Appendix C

Pressure vessel assembly P/N 7383

Nonmetallic hose P/N PVTBF025

Nonmetallic hose assembly P/N PG-H00381

Seawater element P/N SW-2540

Reverse osmosis pressure vessel P/N 13A-VM2540-012

SERVICE

a. To change the actual flow to equivalent flow at 25C:

(1)

Measure feedwater temperature.

(2)

Find the corresponding correction factor in Table 2-3.

(3)

Read the product water flowmeter.

(4)

Multiply the correction factor times the flow rate. This is the equivalent flow for 250C.

b. To correct actual flow at a given temperature to an equivalent rate at a desired temperature:

(1)

Measure actual feedwater temperature.

(2)

Look up corresponding correction factor for the actual temperature.

2-107