This drying procedure is applicable to machine tooling and accessories.

TM 38-260

(3) Process D-3, infrared lamp. Infrared lamp drying consists of exposing the item(s) to direct heat rays, from

infrared lamps.

(a) All pockets of trapped cleaning solvents must be drained from parts before they are exposed to the direct

heat rays of the infrared lamps.

(b) A temperature of 160F (71C) must be maintained to effectively dry the parts.

spacing of the lamps, the distance between the lamps, the mass and composition of the parts, and the distance from the

lamps to the parts.

(d) It is necessary to remove flammable vapors from the drying area to avoid further danger from fire.

(e) This drying procedure is applicable to machine tooling and accessories.

(4) Process D-4, wiping. Drying by wiping is accomplished by wiping the surfaces of the item(s) with clean, dry,

lint free cloths, or lint free wiping papers.

(a) Drying by wiping shall be accomplished in two steps; Step 1 The first wiping should remove all cleaning

solvent and leave an apparently dry surface. Step 2 A final wipe should be performed using a clean, dry, lint free cloth or

paper to assure a thoroughly dried surface.

(b) When disposing of solvent-saturated cloths or paper, care must be exercised to see that they are placed in

approved metal containers with closed tops. The containers must be emptied at regular intervals.

WARNING

SINCE MOST SOLVENT CLEANING OPERATIONS INHERENTLY

INVOLVE FIRE HAZARDS, AN ADEQUATE SUPPLY OF FIRE

EXTINGUISHERS SHOULD BE LOCATED IN THE VICINITY OF

THE CLEANING OPERATIONS. FOAMITE TYPE FIRE

EXTINGUISHERS ARE RECOMMENDED FOR PETROLEUM FIRES

IN GENERAL, AND DRY CHEMICAL ALL PURPOSE A, B, AND C

TYPE EXTINGUISHERS ARE RECOMMENDED FOR GENERAL

USE.

(5) Process D-5, draining. When the final step in the cleaning operation involves the use of a petroleum solvent,

a thorough draining of the solvent shall be permitted as a drying procedure.

(a) This procedure may be used only when cold-application solvent cutback compounds, such as P-2, P-3, P- 19,

and P-21, of table 2-1, are to be used as preservatives on the items. Preservatives P-3, P-19, and P-21, of table 2-1, are

basically petroleum preservatives.

2-11