TM 5-4610-218-12
transformer, receptacles, low water alarm toggle
feeder tank supplies pulverized limestone slurry
switch, alarm buzzer, and warning light indicator.
(coagulation aid) to the erdlator tank and diatomite
slurry to the diatomite dilution tank.
h. Raw Water Pump. A self-priming, centrifu-
gal, electric-driven pump is furnished for each
(2) Chemical solution feeder. The chemical
water purification unit.
solution feeder is constructed of material having
anticorrosive resistance and is mounted to the first
i. Distribution Pump. An electric-driven pump
shelf of the chemical equipment frame. It consists
is furnished with each water purification unit,
of two diaphragm pumps operated from one electric
j. Storage Tanks. Three collapsible fabric
motor by means of a gear reduction mechanism. The
tanks, each with a capacity of 1500 gallons, are re-
chemical solution feeder pumps ferric chloride and
quired for storing the filtered water.
calcium hypochlorite solution from two chemical
tanks into the mixing zone (fig. 1-4) of the erdlator
generator set is required to supply the electric
tank.
power for the operation of the water purification
(3) Chemical slurry feeder speed reducer.
unit,
The chemical slurry feeder speed reducer (fig. 1-5)
l. Hoses and Fittings. Sufficient hoses and fit-
is mounted on the second shelf of the chemical feed
tings are furnished with the basic issue items to
equipment frame. It reduces the speed from the
equip the water purification unit for normal oper-
slurry feeder drive motor to the feed agitator. The
ation.
ratio is 60 to 1.
m. Piping and Valves. The unit is equipped
(4) Chemical slurry feeder drive motor.
with piping and valves of four different colors.
The chemical slurry feeder drive motor is mounted
Black indicates raw water; yellow, coagulated wa-
on the second shelf of the chemical feed equipment
ter; red, waste water; and green, filtered water,
frame. It drives the slurry feeder through a speed
reducer and chain drive safety slip clutch.
1-7. Identification and Tabulated Data.
(5) Diatomite slurry dilution tank assem-
bly. The diatomite slurry dilution tank assembly is
a. Identification.
made of aluminum and welded watertight. It is
(1) The transportation data plate, located on
mounted to the slurry feeder tank and provide stor-
the right rear of the van body, provides information
age of diatomite slurry to supply the suction line of
pertaining to transportation. It gives the overall
the filter pump.
length, width, and height in inches, shipping
(6) Chemical solution tanks and covers
cubage in cubic feet, shipping weight in pounds, and
There are two chemical solution tanks, located
set stock number (set consists of chassis, van, and
under the chemical solution feeder. These tanks are
trailer).
made of steel, lined with synthetic rubber molded to
(2) The set data plate is located on the right
the metal. They are used to store a supply of chem-
rear side of the van body. It gives the nomenclature,
icals for the solution feeder pumps, one supplies cal-
Federal stock number, serial number, registration
cium hypochlorite, and the other ferric chloride.
number, manufacturer, model number, contract
(7) Safety s1ip clutch. The safety slip clutch
number, date manufactured, length, width, height,
is located on the drive end of the slurry feeder agita-
shipping weight, cubage feet, capacity or pay load,
tor shaft. It protects the drive components from
gross vehicle weight, data list, specification re-
damage when an overload is applied to the agitator
visions, inspection stamp and date inspected, (fig. 1-
shaft.
6).
(8) Chain tightener. The chain tightener is
(3) The erdlator identification plate, located
mounted near the center of the chemical feed equip-
on the front of the erdlator tank, specifies the man-
ment frame. It consists of a sprocket and shaft and
ufacturer, model number, serial number and part
is used to increase or decrease the drive chain ten-
number, design activity and contract number.
sion.
(4) The chemical slurry feeder identification
g. Electrical Control Cabinet. The electrical
plate, located on the front of the feeder, specifies the
control cabinet (fig. 1-3) is mounted to the front of
name of the unit, the manufacturer, serial number,
the sludge concentrator tank. It contains the circuit
model number, part number, design activity, and
breakers, motor starters, ON and OFF switches,
contract number.
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