Bartec ORB P-800LT, Руководство пользователя

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11-07-2013
P-800LT Freeze Point Analyzer 6-4 Routine Maintenance & Service
T
ROUBLESHOOTING
Problem / Symptom Cause Corrective Action
Freeze point out of
range Detected freeze point value is
outside the expected range of the
Analyzer
Faulty temperature sensor
Incorrect 4-20 mA signal
Allow unit to run additional cycles.
Process fluctuations or changeovers
can cause out of range alarms due to
different sample characteristics.
Check and replace as required.
Check 4-20 mA signal and range;
correct as required (see Section 4).
Freeze point not
detected Time to detect value too short
Faulty cryocooler
Increase time to detect interval (see
Section 4).
Check and replace as required.
Erratic readings Faulty temperature sensor
Faulty RTD PCB
Electronics failure (main PCB)
Check and replace as required.
Check and replace as required.
Check and replace as required.
Cell won’t cool Low or no coolant supply to
cryocooler
Faulty cryocooler
Sample solenoid leaking or faulty
Check and correct as required.
Check and replace as required.
Check for proper flow during analysis;
replace as required.
Low or no sample flow Damaged or plugged back
pressure regulator
Sample solenoid leaking or faulty
Faulty air-actuated valve
Blockage in cooling cell
Clean or replace as required.
Check and replace as required.
Check and replace as required.
Check and clear blockage as required.
4-20 mA failed or out of
range Incorrect 4-20 mA values
Faulty 4-20 module
Faulty main PCB
Faulty line to control room
Correct as required (see Section 4).
Check and replace as required.
Check and replace as required.
Check line and repair as required.