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 TM 55-1905-223-24-18-1
Troubleshooting - CONT
Table 2-2.
Malfunction
Test or Inspection
Corrective Action
FRESH WATER COOLING PIPING SYSTEM - CONT
No discharge pressure.
223.
STEP 1. Check for closed discharge valve.
Ensure discharge valve is fully open.
STEP 2. Check for closed suction valve.
Ensure suction valve is fully open.
STEP 3.
Check valve installed backwards or jammed.
Ensure check valve is installed in correct direction with stem in the
a.
u p r i g h t position.
b.
If check valve is jammed:
(1) Remove valve (para. 2-341).
(2) Inspect and clean as necessary.
(3) Clean or replace strainer basket.
NOTE
If steps 1 through 3 do not correct the malfunction, refer
to POTABLE WATER SYSTEM troubleshooting.
COMPRESSED AIR PIPING SYSTEM
System does not maintain pressure.
224.
STEP 1. Check for leakage in mission essential equipment piping branch.
a. Isolate one mission-essential supply branch at a time.
b. If pressure begins to return, leave branch isolated.
c. If pressure does not return, reopen branch and try another branch.
d. Repair as necessary.
STEP 2. Check for leakage in utility branch piping.
a. Isolate one branch at a time until pressure returns.
b. When faulty area is located, repair as necessary.
STEP 3. Check for leaking receiver.
a. Isolate receiver.
b. Repair or replace faulty components as necessary.
2-170
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