Table 4-1. Operator/Crew Preventative Maintenance Checks and Services
Equipment will be
Item to be
reported not ready
Equipment panels and surfaces
Clean front panels, cases, and meter
Check all cable connections and
Check for loose ground straps at
grounding rods. Check ground
leads for tight connection at
equipment connection points.
Power distribution panel
Check that each circuit breaker is
Any circuit, breaker is in the
Check that the audible signal is
working by placing the FAULT
Test all indicator lamps; replace
Tighten loose screws and nuts and
replace any missing hardware as
Control and switch knobs.
Check all front panel knobs and
tighten as necessary.
Check spare fuse holders on the
power supply to see that spare
fuses of the proper size are
Gaskets, shelter air vents and
Inspect gaskets around air vent
covers and door for damage or
Inspect for wear and fraying. Repair
with electrical insulating tape, if
Clean the filters in the exterior
(4) At least once each week if the equipment
TRICHLOROTRIFLUOROETHANE dissolves natural
is maintained while in a shutdown condition.
oils, prolonged contact with skin should be avoided.
b. Cleaning of the filters should be accomplished
When necessary, use gloves which the solvent cannot
penetrate. If the solvent is taken internally, consult a
on a more frequent basis if the equipment is operating in
an extremely dusty environment.
a. Use a dry, clean, lint-free cloth or brush to
c. Record the results of the preventive
remove dust or dirt. If necessary, moisten the cloth or
maintenance on DA Form 2024, Equipment Inspection
brush with cleaning compound (NSN 6850-00-5979765).
and Maintenance Worksheet. Use the item number in
b. After cleaning, wipe dry with a clean cloth.
as the source item number for entry
c. If available, dry compressed air not exceeding
Number column of Form 2404.
60 pounds per square inch may be used to remove dirt
and dust from inaccessible places.
4-6. General Cleaning WARNING
4-7. Cleaning Filters
Adequate ventilation should be provided while using
a. Location of Filters to be Cleaned.
breathing of vapor should be avoided. The solvent
(1) Two on the interior side of the shelter
should not be used near heat or open flame; the
products of decomposition are toxic and irritating. Since
(2) One in each of the two exterior bottom