Piper PA-44-180 SEMINOLE Maintenance Manual page 811

CHART 9108. ELECTRIC SYMBOLS (New Style) (Sheet 3 of 3)
CONTACT SWITCH ASSEMBLIES
CLOSED
CONTACT
NON-LOCKING
(MAKE OR BREAK)
(MAKE)
CIRCUIT
CIRCUIT
CLOSING OR OPENING
CLOSING
PRESSURE OR VACUUM ACTUATED SWITCH
V P
CLOSES ON
RISING PRESSURE
LIMIT SWITCH, DIRECTLY ACTUATED - SPRING RETURN
NORMALLY NORMALLY OPEN
OPEN HELD CLOSED
SELECTOR OR MULTI - POSITION SWITCH
ANY NUMBER OF TRANSMISSION PATHS MAY BE SHOWN
EXAMPLE OF
RELAY
PIPER AIRCRAFT
PA-44-180/180T
AIRPLANE MAINTENANCE MANUAL
BASIC
OPEN TRANSFER
CONTACT
MOMENTARY OR
SPRING RETURN
(BREAK)
CIRCUIT TWO
OPENING CIRCUIT
OPENS ON
RISING PRESSURE
NORMALLY NORMALLY CLOSED
CLOSED HELD OPEN
SWITCHES WITH TIME/DELAY FEATURE
CLOSED
OPEN
TIME-DELAY
TIME-DELAY
OPENING
CLOSING
OPEN CLOSED
TIME-DELAY TIME-DELAY
OPENING CLOSING
ARROW INDICATES DIRECTION
OF SWITCH OPERATION
IN WHICH CONTACT
ACTION IS DELAYED
PUSH BUTTON
(MAKE)
CIRCUIT
CLOSING
TRANSFER
THREE POSITION
ONE POLE
TEMPERATURE ACTUATED
OR
t t
CLOSES ON
RISING TEMPERATURE
THERMAL SWITCHES
t
NORMALLY OPEN
CLOSES ON
RISING TEMPERATURE
t
NORMALLY CLOSED
OPENS ON
RISING TEMPERATURE
ON-ON-ON SWITCH ACUTATION
TOGGLE IN THE
DOWN POSITION
ROTARY
SWITCH
4B18
MOMENTARY OR
SPRING RETURN
(BREAK)
TWO
CIRCUIT
CIRCUIT
OPENING
LOCKING AND NON-LOCKING
OFF
OFF
THREE POSITION
TWO POLE
NOTE: t* SYMBOL
SHALL BE REPLACED
BY DATA GIVING THE
OPERATING
OR
t t TEMPERATURE
OF THE DEVICE
OPENS ON
RISING TEMPERATURE
t
NORMALLY OPEN
INTERNAL HEATER
SHOWN
EXAMPLE
TOGGLE IN THE
UP POSITION
NOTE: Viewed from end
opposite control knob.
Page 91-23
Added: June 20, 1995
91-22-00