TM 5-4610-223-12
Table 4-2. Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WATER PURIFICATION UNIT-Cont
Step 3.
Check for insufficient precoating.
Backwash and precoat the filters.
Step 4.
Check for clogged filter elements.
Remove and clean the elements (para 3-46 d. ).
17. WATER NOT CLEAR AFTER FILTERING.
Step 1.
Check for improperly precoated filter elements.
Backwash (para 3-46 a. ) and precoat the elements (para 2-4 c (2)).
Step 2.
Check for clogged filter elements.
Backwash and precoat the elements.
Step 3.
Check for broken filter aid cake.
Backwash and precoat the elements.
Step 4.
Check for loose or damaged filter elements.
Tighten the elements if loose; replace damaged elements (para 3-46 f.)
18. ERDLATOR AGITATOR RUNS NOISY OR WILL NOT RUN.
Step 1.
Check for worn or seized agitator shaft bearings.
Replace the shaft bearings (para 4-112).
Step 2.
Check for worn or damaged flexible coupling.
Replace the flexible coupling (para 4-112).
Step 3.
Check for sheared flexible coupling key.
Replace the key (para 4-112).
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