7
APP-001b
APR 2007
AUTO-PURGER PLUS APP FLOW DIAGRAM
Figure 4
After the operator opens the water purge line shut-off valve
and presses the OK button, the water purge line solenoid
valve (G) energizes to drain the concentrated water. If the
pressure in the evaporator chamber is less than 10 psig
(0.7 bar) as detected by the low side pressure transducer,
the low-side pressure assist solenoid valve (F) modulates
to maintain 10 psig (0.7 bar) in the evaporator chamber.
The concentrated water continues to drain until the level
reaches the low-liquid level sensor. After the liquid level
reaches this sensor, the water purge line solenoid valve
(G) remains energized for an additional 10 seconds, and
then shuts.
After the water is drained, the low-side pressure-assist
solenoid valve F closes, the suction line solenoid valve
E opens, and the Control Console indicates, DRAINING
IS COMPLETE. CLOSE WATER PURGE SHUT-OFF VALVE
THEN PRESS “OK” BUTTON.
After the operator closes the water purge line shut-off
valve and presses the OK button, the AUTO-PURGER
Plus goes back to COOLING DOWN mode, STARTUP
DEL AY mode, and then COLLECTING AIR AND WATER
mode. If no air or water is present, there are no releases
to atmosphere.
1" WATER BUBBLER
WATER
BUBBLER
OVERFLOW
TUBE
½" FOUL
GAS LINE
½" LOW-PRESSURE
PUMPED-LIQUID LINE
¾" SUCTION LINE
FILL LINE
D
B
C
FLOW REGULATOR
GAUGE VALVE
GAUGE VALVE
LIQUID MAKE-UP
LEVEL SENSOR
CHECK VALVE
LIQUID
DRAINER
OIL DRAIN AND PUMP OUT
HIGH PRESSURE
EVAPORATOR SHELL
FLOAT
SWITCH
1 PSID (0.07 BAR)
CHECK VALVE
½" LOW-PRESSURE
LIQUID RETURN LINE
STOP/CHECK VALVE
METERING
VALVE
HIGH SIDE PRESSURE TRANSDUCER
LEVEL SENSOR
LOW LIQUID
WATER CONCENTRATION SENSOR
ELECTRIC HEATERS
VAPOR
TRAP
TEMPERATURE SENSOR
PLATE HEATER TEMPERATURE SENSOR
LIQUID TEMPERATURE SENSOR
225 PSID (15.5 BAR) RELIEF CHECK VALVE
LOW SIDE PRESSURE TRANSDUCER
STRAINER
E
F
G
1 PSID (0.07 BAR) CHECK VALVE
AIR SEPARATOR
N.C.
OIL DRAIN AND PUMP OUT
FLOODED EVAPORATOR CHAMBER
1 PSID (0.07 BAR) RELIEF CHECK VALVE
WATER PURGE LINE
TO CUSTOMER SUPPLIED CONTAINER
GAS
RELIEF VALVE
300 PSI (20.7 BAR)
½" WATER BUBBLER
DRAIN LINE TO SEWER
RELIEF VALVE
VENT LINE
ASSEMBLY
CHAMBER
HIGH SIDE TO LOW SIDE
BYPASS VALVE
(NORMALLY CLOSED)
WITH ORIFICE
PURGE
VALVE
WATER PURGE LINE
SHUT-OFF VALVE
NO ORIFICE
WATER PURGE LINE STRAINER
NO ORIFICE
SOLENOID VALVES:
B
LOW-PRESSURE PUMPED-LIQUID SOLENOID VALVE
C
PURGE GAS SOLENOID VALVE
D
WATER BUBBLER FILL LINE SOLENOID VALVE
E
SUCTION LINE SOLENOID VALVE
F
LOW-SIDE PRESSURE-ASSIST SOLENOID VALVE
G
WATER PURGE LINE SOLENOID VALVE
