Section Il. MOVEMENT TO A NEW WORKSITE
services, position the unit on the transporter (truck,
2-3. Dismantling for Movement
flatcar. etc.). Block and tie down securely. For long
The only dismantling required is the removal and
distance moving cover unit with cover provided.
stowing of the hypochlorite bag and the dropping of
the hypochlorite bag support. When necessary to
2-4. Reinstallation After Movement
move the water purification unit to a new worksite,
Refer to paragraph 2-2 to reinstall the unit after
it is shipped as a complete unit. After performing
movement to a new worksite.
the required preventive maintenance checks and
CONTROLS AND INSTRUMENTS
Section III.
valve creates a pressure drop in the main 2-inch
2-5. General
water line which may be varied by changing the
This section describes the various controls and
valve setting. Turning the valve handle to the right
instruments and provides the operator / crew
increases the pressure drop and turning to the left
sufficient information to insure proper operation of
decreases the pressure drop. For a given water flow
the hypochlorination unit.
through the unit, the setting of this valve governs
the speed of the hypochlorinator.
a. Stroke Control. The setting of the stroke
e. Water Meter Register. The water meter
control determines the length of stroke of the
register is located on top of the water meter. The
pumping shaft and thereby the quantity of
register totalizes the amount of the water flowing
hypochlorite solution pumped per stroke. For
through the bypass line. By observing the time
maximum length of stroke the pointer is set at 10
required for a certain quantity of water to pass
on the dial. With the pointer set at 5, the stroke
through the meter, the flow rate in the bypass may
length is one-half maximum ; at 7, it is seven-tenths
be determined. For example, if 50 gallons pass
maximum, etc.
through the meter in 10 minutes. the average
b. Flow Controller. The flow controller is a
bypass flow rate is 50 divided by 10 or 5 gpm. The
spring-loaded diaphragm and needle valve which
flow through the bypass should not exceed 10
operates to maintain a fixed flow rate through the
g p m , which is equivalent to the maximum
valve, thus stabilizing the force applied to the
hypochlorinator operating speed of 12 strokes per
automatic hypochlorinator valve diaphragm (fig. 2-
minute.
f. Water Pressure Gage. The water pressure gage
c. Hypochlorinator Water Supply Value. This
is located on top of the balancing water valve. The
valve serves to shut off the water supply to the
gage indicates the hypochlorinator operating water
hypochlorinator when maintenance must be
pressure. The gage reading should always be 10
performed. During normal operation, this valve
pounds per square inch or greater.
must be wide open at all times.
d. Range Adjusting Valve (Globe Valve). This
