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TM 10-4130-239-14
Section IV.
OPERATION UNDER UNUSUAL CONDITIONS
2-11. GENERAL.
The Small Mobile Water Chiller is designed to
operate normally within a wide range of climatic conditions.
However, some extreme conditions require special operating and
servicing procedures to prevent undue loading and excessive wear on
the equipment.
2-12.
OPERATION IN EXTREME HEAT.
The water chiller is designed to
operate in temperatures up to 1200F (490C).
Extra care should be
taken to minimize the cooling load when operating in extreme high
moist or dry temperatures.
Some of the steps that may be taken are:
a.
When possible, use shades or awnings to shut out direct rays of
the sun.
b.
Check that the fan belts are tight and not slipping.
c.
Store water containers in shade prior to filling.
d.
Shade the water to be cooled as long as possible prior to
cooling in order to get the best results.
2-13.
OPERATION IN SALT AIR/SEA SPRAY.
Exposed areas should be
spray-rinsed or sponged with clear water periodically to remove salt
encrustations.
2-14.
OPERATION IN SANDY/DUSTY CONDITIONS.
a.
Sand and dust can seriously reduce the efficiency of the water
chiller by obstructing the paper cartridge and foam precleaned
reducing airflow.
Clean cartridge and precleaned daily if necessary.
b.
Check the condenser for blockage reducing the air flow through
the coil.
Clean condenser daily if necessary to provide unobstructed
air flow.
c.
Replace fuel filter weekly.
2-15.
OPERATION
reduced with the
will be realized
2-16.
EMERGENCY
IN HIGH ALTITUDES.
Operating efficiency will be
increase in altitude.
A loss of approximately 20%
at one mile.
PROCEDURES .
a.
General.
The water chiller may be operated in an emergency
non-critical damaqe occurs to external components or it becomes
inoperative due to a shutdown by built-in safety devices.
b.
Damage.
if
(1) Case/Exhaust System.
If the water chiller case or muffler
becomes damaged, remove the damaged component(s) and operate the unit
2-31
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