TM 5-6115-400-12
Table 2-1. Freezing Points, Composition and Specific Gravities of Military Antifreeze Materials-Continued
Pints of
Lowest
inhibited
Ethylene glycol
expected
glycol per
coolant solution
ambient
gallon of
Compound, Antifreeze
specific gravity
1
2
3
temperature, F.
coolant
Arctic
at 68F.
-10
3-1/4
DO NOT DILUTE WITH WATER OR ANY
1.055
-20
3-1/2
OTHER SUBSTANCE
1.062
-30
4
1.067
-40
4-1/4
1.073
-50
Arctic Anti-
-60
freeze pre-
-75
ferred
1
Maximum protection is obtained at 60 percent by volume (4.8 pints of ethylene glycol per gallon of solution).
2
Military Specifications MIL-C-11755 Arctic type, nonvolatile antifreeze compound is intended for use in the cooling system of liquid cooled internal combustion
engines. It is used for protection against freezing primarily in Arctic regions where the ambient temperature remains for extended periods of time close to -40F or below,
to as low as -90F.
3
Use an accurate hydrometer. To test hydrometer, use one part ethylene glycol type antifreeze to two parts water. This should produce a hydrometer reading of
0F.
Note. Fasten a tag near the radiator filler cap indicating
generator set as close to the worksite as practical.
Avoid, if possible, dusty or sandy locations. Use
the type of antifreeze.
suitable 2-2 planks, logs, or other material for a base, in
an area where the ground is soft.
Caution
If ambient temperature is 70F. or above, do
c. Indoor Installation.
Keep the area well
not use antifreeze of any kind. If ambient
ventilated at all times, so that the generator set will
receive a maximum supply of air. Install a gas-tight
temperature is between 400F, and 70F., the
exhaust line as large as the exhaust outlet to pipe the
use of antifreeze is optional.
exhaust gases to the outside. Use as few bends in the
line as possible. Provide metal shields for the exhaust
a. Open access door and remove batteries.
lines where they pass through flammable walls. Wrap
b. Remove cell caps and fill battery cells with
the exhaust lines with asbestos if there is any danger of
electrolyte.
anyone touching them.
c. Make sure vent holes in cell caps are open and
install caps.
Warning
d. Reinstall batteries.
Do not operate the generator set in an
e. Positive and negative cables are disconnected
enclosed area unless the exhaust gases are
from the batteries when generator set is shipped.
piped to the outside. Inhalation of exhaust
Connect these cables as illustrated in figure 2-2.
fumes will result in serious illness or death.
f. Tighten all post connectors securely to the
posts.
and is designed to operate satisfactorily up to 150 out of
2-5. Installation or Setting-Up Instructions
level. Set up the unit as level as possible and keep it as
level as possible during operation.
a. General. The generator set should be installed
e. Grounding.
The generator set must be
on a level site, clear of obstacles, and with ample
grounded prior to operation. The ground can be, in
ventilation.
order of preference, an underground metallic water
piping system, a driven metal rod, or a buried metal
b. Installation. When preparing for a permanent
plate. A ground rod must have a minimum diameter of
installation, be sure the base is solid enough to support
5/8 inch if solid or 3/4 inch if pipe, and driven to a
the weight of the unit. Refer to figure 1-4 for dimensions
minimum depth of eight feet. A ground plate must have
of the base.
a minimum area of nine square feet and be buried at a
Select a site where there will be sufficient space
minimum depth of four feet. The ground lead must be
on all sides for servicing and operation of the unit.
at
least
No.
6
When preparing for temporary installation, move the
2-2
