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TM 55-1905-223-24-11
GLOSSARY
SECTION I. ABBREVIATIONS
Abbreviation
Definition
ac
Alternating current
FNPT
Female National Pipe Thread
ft-lb
foot-pound
gl
gallon
hp
Hz
Hertz
in-lb
inch-pound
kva
kilovolt ampere
MSD
Marine Sanitation Device
psi
pounds per square inch
PVC
polyvinylchloride plastic
RPM
Revolutions per Minute
RSI
Remote Status Indicator
vac
Voltage Alternating Current
SECTION II. DEFINITIONS OF UNUSUAL TERMS
ANODE
-
A corrosion preventive zinc plug used for reducing the
effects of electrolysis on other metals.
BACKWASH
-
A reversal of liquid flow for the purpose of clearing or
unclogging a screen or filter.
CAPACITOR
-
A device possessing the property of capacitance. A typical
capacitor consists of two conducting surfaces separated by
an insulating material. A capacitor stores electrical
energy, blocks the flow of dc current and permits the flow
of ac current to a degree largely dependent on the capaci-
tance and the frequency of the applied ac current.
CHLORINATION
-
The process of adding chlorine (bleach) to the treatment
unit.
CIRCUIT
-
An electrical path through which an electric current may
flow from a voltage supply to a load and return. A closed
or complete circuit is one where current is flowing. An
open circuit is one where the path has been disrupted, such
as an open switch or circuit breaker, thus stopping current
flow.
CIRCUIT BREAKER
-
A protective device for opening a circuit when current flow
exceeds a predetermined value.
Glossary 1


 


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