DOC: 03-925609-00
DESC:
PAGE:
REV
17 of 17
Assembly Procedure
3
PREPARED BY: Sax Makthepharack REVISED BY:
CONTROL: INDUSTRIAL ENGINEERING
REV. DATE:
SHOWN
-
02 - 03 - 00
Sax Makthepharack
Most likely
problem:
Conduct Full
Test or
Calibration
Test P LT
85 and Leak error
LT .500 Psi
Test P
LT 85 and/or
Leak error GT
.500 Psi
Severe Leak
Normal Leak,
Check O-Rings and
Fittings
Downstream Restriction
Fritt out of Tolerance
Wrong Type #
Bad PWA
Bad Transducer
Missing Fritt
Transducer backwards
Bad Board
Decision
Channel X not
operating
Fritt out of
Tolerance
Leak Test Error
Flow Sensor
Overrange
Error
Message
Label and Package
DEFC Module
Voltage GT
3VDC
Transducer
Connection
Board
Test Flowrate
LT Expected
Flowrate
Bad Transducer
Bad PWA
In
Controller Test,
Valves shut off
Valve or PWA
Blockage
Voltage LT .5VDC
Valve Connection
Blockage
Test Flowrate
LT Expected
Flowrate
Transducer
backwards or
shorted
No Fritt
Test Flowrate
GT Expected
Flowrate
Transducer Bad
Transducer
Backwards
Short to Block
Blockage
PWA
Use Controller test to
diagnosis problem
YES
NO
YES
NO
Diagnostic Rules:
1. Always investigate Leak and Flow
Sensor Errors first
2. Always Verify Detector type.
3. If "Channel X Not Operating" with "Fritt
out of Tolerance" message, ignore fritt
message.
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
YES
NO
NO
YES
NO
YES
DEFC Trouble-shooting Flow Chart