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 TM 55-1905-223-24-18-1
Table 2-2.
Troubleshooting - CONT
Malfunction
Test or Inspection
Corrective Action
FRESH WATER COOLING PIPING SYSTEM
Low discharge pressure.
222.
STEP 1. Check for partially closed suction valves.
Ensure suction valves are fully open.
STEP 2. Check for partially closed discharge valves.
Ensure discharge valves are fully open.
STEP 3. Check for dirty or clogged suction strainers.
Clean or replace strainers.
STEP 4. Check for sticking valves.
Refer to POTABLE WATER SYSTEM troubleshooting, Malfunction 1, Step 6.
STEP 5. Check for leaking valves.
Refer to POTABLE WATER SYSTEM troubleshooting, Malfunction 1, Step 8.
STEP 6. Check for leaking flange joints or loose flange connections.
Refer to BILGE/BALLAST AND FIREMAIN SYSTEM troubleshooting, Malfunction 1,
Step 7.
STEP 7. Check for piping failure.
Locate leak, isolate repair or replace affected piping.
STEP 8. Check for leaking pipe fitting.
Locate leak, isolate repair or replace fitting.
STEP 9. Check for malfunctioning pressure gauge.
a. Test the gauge as follows:
(1) Remove gauge from system (para. 2-340).
(2) Install a gauge of known accuracy to check system.
(3) Replace faulty gauge (para. 2-340).
STEP 10. Check valve jammed by foreign matter.
Remove valve (para. 2-341).
b. Inspect and clean as necessary.
c. Replace valve (para. 2-341).
NOTE
If steps 1 through 10 do not correct the malfunction,
refer to POTABLE WATER SYSTEM troubleshooting.
2-169
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