MIL-HDBK-1130
and dried, should be capped tightly. Circulating tubes that are too flat to
drain completely should be blown out with compressed air. Further moisture
should be dried by circulating air or heat from a portable heater through the
furnace.
Corrosion Prevention. After cleaning, surfaces should be painted,
2.2.7.3
touched up if already painted, or treated with oil or an anti-rust compound.
a)
The fire sides of tubes, shells, and fire boxes, as well as
accessible surfaces of drums and tubes, should be painted or
treated to inhibit rust. Bearings and journal boxes should be
treated as indicated in para. 2.2.5.5.c. Gears in internal
gear cases that do not run in grease should be coated with the
type of oil normally used for lubrication. Used grease should
be removed from grease-packed gear cases, and the cases
refilled with clear grease of the proper type.
b) Unpainted, machined surfaces should be coated with corrosion-
preventive compounds. Threads and finished surfaces on steel
pipe left exposed when disconnected should be protected with
afilm of graphite and oil. Interior and exterior painted
surfaces that show signs of corrosion should be retouched with
paint. Sheet metal that is not galvanized should be painted.
Space Heaters and Warm-Air Furnaces. Coal, ashes, soot, and carbon
2.2.7.4
should be removed from combustion chambers, grates, and ashpits of space
heaters and warm-air furnaces. Firing equipment, such as shakers and lid-
lifters, should be placed in the firebox, and the firebox door closed and
secured. Ash boxes should be thoroughly cleaned, the ashpan replaced, and the
ash door closed and secured. Smokepipes should be taken down, and soot and
carbon removed. All openings should be closed; if vent pipes cannot be
removed, they should be tightly capped. Draft controls in stacks should be
blocked in a closed position. Exposed metal parts should be protected with a
coating of stove blacking. Humidifiers should be drained thoroughly;
waterlines should be shut off and drained. If necessary, doors should be
blanked, and all ventilation openings should be covered.
Air Conditioning Equipment. The refrigerant should be removed from
2.2.7.5
air conditioning equipment and put into storage cylinders appropriately marked
with the type of refrigerant and the date. Suitable warning labels should
then be posted on switches and controls of equipment to indicate that
refrigerant has been removed. If the oil in crankcases of compressors appears
to be dirty or contaminated, crankcases should be drained, flushed, and
refilled to the proper level with oil of the proper type. All equipment,
including waterlines, cylinder jackets, condensers, pumps, and water pans,
should be flushed with fresh water and drained, leaving all vents and drains
open. Openings should be covered with screens.
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