INSTALLATION AND OPERATION
Section I. SERVICE UPON RECEIPT OF EQUIPMENT
After unpacking boarding ladder,
The darkroom may be positioned by
cable adapter, ground rod and strap,
power cables, water hoses, and float,
located curbside and roadside (fig.
make certain that the three holddown
Make certain that the forks pass
rings are removed from the darkroom
completely under the darkroom and
extend through the three skids. The
darkroom may also be towed by
attaching cables to the tow rings.
The darkroom site must be firm
ground, reasonably level, with good drainage
characteristics to carry off water waste. The darkroom
must be located within 40 feet of water, drain, and
electric power connections. The curbside must face the
and covers from the print processors and enlargers.
prevailing wind, so that the exhaust gas from the space
heater blows away from the darkroom. During summer
d. Remove the cover from the 5-gallon fuel can
operation, select a shaded site to decrease the solar
load on the air conditioners. The darkroom may be
leveled by inserting screwjacks under the jack pads.
The darkroom shall be checked with a spirit level in both
the vertical and horizontal planes. If a spirit level is not
available, fill the large compartment of the processing
f. Unbolt the processing rack assemblies.
sink with water until the water level is adjacent to the
bottom of the small tank holder (TM 11-6740-286-12).
When the darkroom is level, the water will be evenly
g. Unbolt the cover from the diffusion transfer
distributed over the top surface of the small tank holder
equipment storage box.
(without small developing tanks). The site must be
convenient to airdrop or messenger service. If an
h. Unlock storage drawers 1 through 8 and the file
external source of water not under pressure is to be
used, choose a site for the darkroom within 40 feet and
on the same level as the water source. The darkroom is
i. Unstrap and remove the boarding ladder, cable
equipped to lift a column of water to a maximum height
adapters, ground rod and strap, power cables, water
of 15 feet below the level of the water pump.
cable adapters and power cables required.
Make certain that escape door will
j. Unstrap and remove the wastebasket and 3-
always open when darkroom is
secured to truck.
k. Unstrap the Ditto machine carrying case and
b. Vehicle. The darkroom is normally used when
typewriter. Remove the 12-inch safety trimmer.
equipped with four lifting rings. The lifting rings with
sling assembly (fig. 2-1) provide the facility for loading
. Remove the equipment stowed
in the sink (fig.
and off-loading. Folding steps (fig. 5-1) provide access
to the roof of the darkroom. Refer also to paragraph
311n or securing the darkroom to a truck.