4-4
4-4
(6) Swit
(6)
Swithes, c
hes, contr
ontrol an
S S Y Y M M B B O O L L
(7) Indic
(7)
Indicator
ators, la
s, lamps
THREE-PHASE
THREE-PHASE
INDUCTION MOTOR
INDUCTION MOTOR
DC MOTOR
DC MOTOR
ol and pro
d protect
tective d
ive devic
evices es
N N A A M M E E
SWITCH
SWITCH
(N.O)
(N.O)
SWITCH
SWITCH
(N.C)
(N.C)
TWO POSITION SWITC
TWO POSITION SWITCH H
EMERGENCY SWITCH
EMERGENCY SWITCH
PUSH-BUTTON SWITCH
PUSH-BUTTON SWITCH
SWITCH (AUTO RETURN)
SWITCH (AUTO RETURN)
mps and
and signa
signal de
l device
vices s
CHAPTER 4 HOW TO READ CIRCUIT DIAGRAMS
CHAPTER 4 HOW TO READ CIRCUIT DIAGRAMS
S S Y Y M M B B O O L L
BATTERY
BATTERY
N N A A M M E E
OIL PRESSURE SWITCH
OIL PRESSURE SWITCH
MAGNETIC CONTACTOR
MAGNETIC CONTACTOR
FUSE
FUSE
THERMISTER
THERMISTER
MAGNETIC COIL
MAGNETIC COIL
PROXIMITY SENSOR
PROXIMITY SENSOR