MIL-HDBK-1164
Table 36 (Continued)
Frequency (1),
Inspection
Action
(2)
V
Underdrain system
If underdrain is porous and clogged by
alum floc, treat with 2 percent NaOH
(continued)
solution for 12 to 16 hours.
Wash water troughs
Check level and elevation; adjust.
Q
Check for corrosion; if present, dry
SA
troughs, wire brush, and paint.
Operating tables
Clean table (console or panel) inside
W
and out.
Cables
Adjust tension.
V
Hydraulic lines (or
Check for leakage; repair as required.
V
pneumatic)
4-way transfer valves Adjust; tighten packing glands or add
M
new packing.
Lubricate with grease.
M
Adjust valve position indicator, if
M
necessary.
Disassemble, clean, lubricate, and
A
replace worn parts.
Table
Paint inside.
A
Rate controllers
Direct-acting
General
Clean exterior, check diaphragm
W
leakage, tighten packing, and check
freedom of movement and zero
differential.
Diaphragm pot
Disassemble, clean, and replace.
A or V
178
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