TO 1-1-700 - Robins Air Force Base

TO 1-1-700
6.4.5.14 Terminals, screw lugs, and soldered connections,
after making connections.
6.4.6 Exemptions.
6.4.6.1 The following parts need not be coated, however, no
precaution need be taken to prevent coverage, except that dripping
thereon shall be prevented.
6.4.6.1.1 Cable wire, braids, and jackets whose outside surface
is of rubber, synthetic rubber, or Vinylite type composition,
not flexed in normal operation.
6.4.6.1.2 Materials such as nylon, cellulose-acetate rayon
glass, natural or synthetic rubber; this is not applicable to
cable and wire.
6.4.6.1.3 Painted, lacquered, varnished, or surface treated
metal such as chromated zinc or cadmium and anodized aluminum,
interior surfaces.
6.4.6.1.4 Parts made of or plated with chromium, gold,
nickel, rhodium, or stainless steel.
6.4.6.1.5 Shields for coils, electron tubes, transformers, etc.,
and interior surfaces of the shields.
6.4.6.1.6 Small surfaces which were covered to affect
required masking; this is not applicable to solder joints.
6.4.6.1.7 Tubes, electron, and avoid direct application to
envelopes.
6.4.6.2 The following parts and materials shall not be treated
in accordance with this process except as specified herein, but
shall be obtained with an approved fungicidal treatment or be
given a fungicidal treatment in accordance with other processes.
6.4.6.2.1 Cables, cordage, cords, braided cable, etc., which
are flexed in normal operation.
6.4.6.2.2 Instruments, electrical, indicating, treat soldered
connections only during repair operations of the meter.
6.4.6.2.3 Lacing cord, but no precaution need be taken to
prevent overall spray.
6.4.6.2.4 Materials such as canvas, duck, cork, felt, wool or
hair fiber, leather, rope, wood, etc.
6.4.6.2.5 Wave guides.
NOTE
Rotating equipment, such as dynamotors, generators,
motors, power units, and engines, will be impregnated
with a varnish conforming to Grade CB of MIL-I-
24092.
6.4.7 Final Drying of Coated Materials.
6.4.7.1 Prior to packaging, coating shall be dried hard on
metal surfaces and on other surfaces, coating shall not be
tacky.
6.4.7.2 Coated assemblies shall be force-dried at a temperature
not exceeding 60 °C (140 °F). Care shall be taken to
ensure sufficient drying to prevent presence of solvent vapors
in any enclosure.
6.4.7.3 Force drying shall be accomplished for a minimum
period of 1/2 hour and not exceeding 3 hours.
6.4.8 Adjusting and Final Testing. (After 24 hours of air
drying.) After treatment, the equipment or individual assembly
shall be adjusted and aligned for optimum operating characteristics
and, wherever film is broken during alignment. Breaks
will be retouched.
6.4.9 Marking of Treated Equipment. Each unit of equipment
which has been treated and each treated plug-in assembly
as well as all cases and containers in which they are
packed for shipment, will bear a permanent and legible marking
reading MFP. Where any equipment is composed of major
components or assemblies each of these may be individually
marked.
6.4.10 Determination of Coverage.
6.4.10.1 Coverage will be inspected for compliance with
requirements of this process.
6.4.10.2 In general, coating will present a glossy appearance
when viewed under ordinary light.
6.4.10.3 Since varnish coating material is inherently fluorescent,
inspection of treated equipment will be made under an
ultraviolet light.
6.4.10.4 The extent of coverage will be determined by
appearance of fluorescence.
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