Table 3-1. WEEKLY PREVENTIVE MAINTENANCE CHECKS AND SERVICES

5-4220-200-12-1

Table 3-1. WEEKLY PREVENTIVE MAINTENANCE CHECKS AND SERVICES

W-WEEKLY

TOTAL MANHOURS REQUIRED 0.5

Work

Sequence

Item to be Inspected

Number

Procedure

Time

M/H

TANKS

Inspect tanks, manifold assembly. tank stabilizer bands, for rust. corrosion and dam-

0.1

age. Tighten exterior screws. bolts, and nuts carefully after inspecting for thread dam-

age. Inspect harness straps for wear or damage. Insure that tanks. manifold and har-

ness are free of dirt, verdigris and other foreign matter. Check tanks to verify next re-

quired hydrostatic test (every 5 years). Verify next required internal (visual) tank in-

spection.

DEMAND REGULATOR

Inspect hose for dry rot, cuts; hose connectors for proper seating and thread damage.

0.1

Clean filter and inspect for damage. Conduct air leakage test: with the first stage regu-

lator cap assembly seated, attempt to breathe from the second stage regulator. Any air

received indicates an air leak in the first or second stage regulator

GAUGES

Inspect rubber gauge cover for dry rot and cuts. Inspect for broken glass. Check

0.1

against a master reference gauge for operational accuracy. Inspect hose for dry rot

and cuts; hose connectors for proper seating and thread damage Insure that gauges

are free of dirt and verdigris.

OPERATIONAL CHECK

0.1

Connect the major components and conduct operational check. Be alert for unusual

operation or condition; i.e., air leakage. or improper breathing resistance. Conduct an

air leakage test with ample air supply in the tanks and the manifold valve control in the

"on" position; then submerge the equipment in water and check for air leaks.

STORAGE

0.1

Dry the equipment and store in a dry cool well ventilated area.

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