The purpose of this laundry unit is to wash, extract
water, and dry clothes and other suitable materials. The
washing process is a series of baths during which soil is
loosened from the materials, suspended in the water,
and finally rinsed away. Several baths are usually
necessary to remove the soil completely.
Operation is controlled by a timer and removable
FORMULA CHART located in the washer, which
regulates water temperature, wash rinse cycle, and
adding of supplies. The chart carries the unit through a
complete cycle according to the formula cut into the
chart (up to 88 minutes). This chart can be changed at
the discretion of the operator. The washer has an
automatic supply injector unit that consists of five
compartments that facilitates addition of starch, dry
soap, and bleach before and during the washing cycle.
The extractor is simple in operation and is
controlled by a moisture programmer located inside
the control panel. The programmer is adjustable with a
l-minute to lo-minute time range. Once set, the
extractor will run at the set time each time the start
button is depressed.
The dryer, or tumbler, is operated by three different
controls that are manually set by the operator. These
controls are as follows:
Temperature regulating thermostat sets the
basket outlet temperature as determined by the
material being dried.
The drying timer sets the time duration for
drying. It can be set from 0 minutes to a
maximum of 60 minutes.
The cool-down timer controls the allowed cool-
down time for materials being dried. This
control can be set from 0 to 15 minutes.
More specific operation, maintenance, and
troubleshooting information is contained in the
Utilitiesman Basic, Volume 2, Chapter 7, Laundry
Equipment, NAVEDTRA 11020.
Securing the Unit
Before transporting or relocating the unit, you must
secure it properly to prevent damage and extend the
operational life of the unit. As each unit may be
somewhat different, general securing procedures are as
Turn the unit OFF and empty all components.
Switch all breakers to OFF.
Open the drain valve on the pump assembly, and
open the pressure-relief valve on the water
Replace the rib holder assembly in the dryer
Close the water and fuel valves. Disconnect the
fuel and water sources.
Disconnect and store the following components:
a. Dryerflex hose; store it in the tumbler.
b. Power line; store it in the washer.
c. Drain hose; store it in the washer.
Remove the drain plug on the pump and let the
water out. After draining is complete, replace the
When all the water has drained from the system,
close the drain and pressure-relief valves.
WATER PURIFICATION UNITS
The remainder of this topic concerns the NCF water
purification equipment. One of the most important jobs
as a Utilitiesman is the purification of water.
Insufficient quantity or quality of water is not only
debilitating to the individual but has a significant
impact on unit readiness. Water that is not properly
treated and disinfected can spread bacterial diseases,
such as cholera, shigellosis, typhoid, and paratyphoid
fever. Untreated water can also transmit viral hepatitis,
gastroenteritis, and parasitic diseases, such as amoebic
dysentery, giardiasis, and schistosomiasis.
The treatment process includes one or more of the
following processes: coagulation, sedimentation,
filtration, and disinfection.
The medical department advises the commanding
officer on water quality issues. This entails assisting the
Utilitiesman in selecting water sources, surveying the
potable water system, conducting routine
bacteriological examination of the potable water
supplies, and testing the water for halogen levels. The
medical representative also informs the Utilitiesman of
water quality and type of treatment required, if any.