MIL-PRF-83831A
2.4 Order of Precedence. In the event of a conflict between the text of this specification
and the references cited herein, (except for related associated detail specifications, specification
sheets, or MS standards), the text of this specification takes precedence. Nothing in this
document, however, supersedes applicable laws and regulations unless a specific exemption has
been obtained.
.
3. REQUIREMENTS
3.1 First article. This specification provides for first article testing. (see paragraph 4.3
and 4.4)
3.2 Function. This booth shall clean electronic instruments, as normally used in Air Force
Precision Measurement Equipment Laboratories, by spraying the item with a water based cleaning
solution, followed by a clear water rinse, and the removal of moisture with an air blast. The booth
shall accommodate instruments up to 24 inches by 24 inches by 24 inches in size and weighing no
more than 150 pounds.
3.3 Description. The booth shall incorporate features that allow the operator to clean an
item through a full 360 degree rotation manually without the operator physically repositioning it.
The operator shall stand outside the booth to operate the cleaning, rinsing, and drying nozzles as
well as rotating the item being cleaned. All vapors shall be externally exhausted and liquids
drained. Lighting shall be provided so that the work piece is shadowless. Cleaning and rinsing
nozzles shall be adjustable so that the fineness or coarseness of the spray is controllable. A
reservoir shall be included to contain sufficient cleaning solution for four hours of continuous
operation. All controls and indicators shall be within reach and view from the operators work
location and nozzles shall be self storing. Mix ratio of the cleaning solution to water shall be
adjustable from at least 1 part solution to 3-6 parts water. Operating air pressure shall be adjustable
within the 20 to 80 psig range minimum. Hoses serving spray and air blast guns shall withstand a
burst test pressure of not less than four times the maximum pressure developed by a stall or bypass
pressure.
3.4 Interfaces.
a.
Electrical power; 120 Volt AC, 60 Hz, 1 Phase via junction box.
b. Tap water; 60 psig via three-fourths (3/4) inch IPS nipple.
c. Shop compressed air; 200 psig via three-eighths (3/8) inch IPS nipple.
d. Waste drain; via three-fourths (3/4) inch IPS nipple.
e. Exhaust air venting; via duct flange meeting the requirements of NFPA Standard No 91.
f.
Compatible with MIL-C-87937, type I, cleaning compound.
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