TM 5-4610-218-12
Troubleshooting-Continued
Table 3-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
DIATOMITE FILTER SECTION
7.
DIATOMITE FILTER WILL NOT DELIVER WATER.
Step 1.
V a l v e s not correctly positioned.
Reposition the valves CV-36, CV-46, CV-45 and CV-40.
Step 2.
Filter elements clogged.
Backwash and precoat the filter elements.
DIATOMITE FILTER WILL NOT TAKE PRECOAT.
8.
Valves not correctly positioned.
Step 1.
Reposition valves CV-36, CV-45 and CV-40.
Elements clogged.
Step 2.
Backwash or remove the filter elements and clean.
Elements damaged.
Step 3.
Replace the elements.
Elements not correctly positioned.
Step 4.
Position the elements correctly, check O-ring gasket,
r e p l a c e if necessary.
90
DIATOMITE FILTER RUN TOO SHORT OR TOO LONG.
Incorrect diatomite dosage.
Step 1.
Correct the diatomite dosage.
Improper backwash.
Step 2.
Backwash and precoat the filters.
3-38
