'PURGE
COMPLETE'
VALVE
ENCLOSURE
PRESSURE
TEST POINT
(PLUGGED)
D.P. HI / ENCLOSURE PRESSURE
PURGE OUTLET TO PRESSURIZED ENCLOSURE
PURGE VALVE
PILOT RESTRICTOR
LOGIC GAUGE
PRESSURE
REGULATOR
2 barg
30 psi
"OR"
IN-LINE RESTRICTOR
GATE
PURGE
VALVE
LEAKAGE
COMPENSATION
VALVE
TIMER
VALVE
D.P. LO / RLV CONNECTION
ALARM
INDICATOR 1
RED = ALARM
GREEN =
PRESSURIZED
PURGE
INDICATOR 2
YELLOW =
PURGING
ALARM
& TRIP
SENSOR
MINIMUM
PRESSURE
ALARM ONLY (OPTION)
AIR OR INERT
GAS
FILTER
t
PURGE FLOW
SENSOR
ELECTRONIC
TIMER
B
A
