Metrohm NIRS XDS Process Analyzer – SingleFiber - Manual (Page 19)

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2.4.1 Operations Sequence and Flow Diagram
BEBCO Industries, Inc. 4000 Series Purging System
OPERATIONS SEQUENCE NORMAL SYSTEM CONDITIONS
Sequence 1:
Power-up
Self-Test – All LED’s flash
ENCLOSURE
POWER
DISENGAGED
SAFE
ENCLOSURE
PRESSURE
RAPID
EXCHANGE
FLOW
RAPID
EXCHANGE
TIMER
HIGH
ENCLOSURE
PRESSURE
ENCLOSURE
POWER
ENGAGED
PRESSURE
LOSS
ALARM
SYSTEM
CONTROL
BYPASSED
POWER
SHUTDOWN
DELAY
EMERGENCY
POWER
SHUTDOWN
RAPID
EXCHANGE
OVERRIDE
EPCU
POWER
ENGAGED
HEP SEP SDT RET
SERIES 4000 ELECTRONIC POWER CONTROL UNIT
Sequence 2:
Flow Switch Warm-up Cycle
Safe Pressure LED flashes
ENCLOSURE
POWER
DISENGAGED
SAFE
ENCLOSURE
PRESSURE
RAPID
EXCHANGE
FLOW
RAPID
EXCHANGE
TIMER
HIGH
ENCLOSURE
PRESSURE
ENCLOSURE
POWER
ENGAGED
PRESSURE
LOSS
ALARM
SYSTEM
CONTROL
BYPASSED
POWER
SHUTDOWN
DELAY
EMERGENCY
POWER
SHUTDOWN
RAPID
EXCHANGE
OVERRIDE
EPCU
POWER
ENGAGED
HEP SEP SDT RET
SERIES 4000 ELECTRONIC POWER CONTROL UNIT
During Flow Switch Warm-up Cycle,
system monitors Flow Switch Voltage.
Shelf Condition = 4.5V.
Sequence 3:
Flow Switch Warm-up Cycle Complete
Safe Pressure LED OFF
ENCLOSURE
POWER
DISENGAGED
SAFE
ENCLOSURE
PRESSURE
RAPID
EXCHANGE
FLOW
RAPID
EXCHANGE
TIMER
HIGH
ENCLOSURE
PRESSURE
ENCLOSURE
POWER
ENGAGED
PRESSURE
LOSS
ALARM
SYSTEM
CONTROL
BYPASSED
POWER
SHUTDOWN
DELAY
EMERGENCY
POWER
SHUTDOWN
RAPID
EXCHANGE
OVERRIDE
EPCU
POWER
ENGAGED
HEP SEP SDT RET
SERIES 4000 ELECTRONIC POWER CONTROL UNIT
Flow Switch Warm-up Cycle complete
when Flow Switch Voltage > 3.75V