TM 10-4320-303-13
Table 2-6. Description of Operator's Controls and Indicators for Hypochlorination Unit, Model 1955-1.
Item
No.
Item Name
Description and Purpose
1
WATER METER REGISTER
Used to display amount of water flowing through
hypochlorinator unit up to 999,999 gallons.
2
WATER
RESERVOIR
FILL
(GLOBE)
VALVE
Used to fill plastic reservoir with water. Open to fill reservoir.
3
RANGE ADJUSTING (GLOBE) VALVE
Used to control water flow through hypochlorination unit.
Open to route water through hypochlorination unit. Close to
eliminate water flow through hypochlorination unit.
4
WATER PRESSURE GAUGE
Displays operating pressure of hypochlorination unit. Range is
0 to 100 psi.
5
STROKE ADJUST KNOB
Used to set stroke length of impulse diaphragm. Stroke
length determines the quantity of chlorine solution pumped
into water per stroke. Micrometer barrel is marked 0 to 10.
Stroke adjustment thimble is marked 0 to 20.
6
COLOR COMPARATOR
Used to determine amount of chlorine solution present in
water.
SECTION II. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
2.2 GENERAL.
Figure 2-7 (PMCS) routing diagram and table 2-7 (PMCS table) have been provided so you can keep your
TWDS equipment, including hypochlorination unit 1955-1, in good operating condition and ready for its primary
mission. Refer to the applicable technical manuals for specific component PMCS:
a. 125 GPM Pumping Assembly
b. 20,000 Gallon Pillow Tank
c. Hypochlorination Unit, Model A-506131
d. Hypochlorination Unit, Model 1955-3
e. 600 GPM Pumping Assemblies
2.2.1 Warnings and Cautions. Always observe the WARNINGS and CAUTIONS appearing in your PMCS
table. WARNINGS and CAUTIONS appear before applicable procedures. You must observe these
WARNINGS and CAUTIONS to prevent serious injury to yourself and others or prevent your equipment from
being damaged.
2.2.2 Explanation of Table Entries.
2.2.2.1 Item No. Column . Numbers in this column are for reference. When completing DA Form 2404
(Equipment Inspection and Maintenance Worksheet), include the item number for the check/service indicating
a fault. Item numbers also appear in the order that you must do checks and services for the intervals listed.
2.2.2.2 Interval Column. This column tells you when you must do the procedure in the procedure column.
BEFORE procedures must be done before you operate or use the equipment for its intended mission. DURING
procedures must be done during the time you are operating or using the equipment for its intended mission.
AFTER procedures must be done immediately after you have operated the equipment.
2.2.2.3 Location and Item to Check/Service Column. This column provides the location and the item to be
checked or serviced. The item location is underlined.
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