Ametek 5000 Manual page 42

Possible Cause
Gen Temp Alert
Environmental Temp
Faulty electronic control amplifier
PCB
Faulty moisture generator heater
thermistor
Faulty moisture generator thermistor
Low Cell Frequency
Faulty Cell
High Cell Frequency
Contaminated sample cell
Contaminated dryer and/or trap
Excessive moisture
Negative Delta Frequency
Incorrect flow rate or reference leak
Faulty dryer
Memory Is Corrupted
Faulty RAM or RAM battery

To ensure correct moisture operation, refer to "Display Reads Low in Calibrate or
Operate Modes," or "Moisture Generator Output Incorrect."
NOTE
42 | 5000 Single-Point Moisture Analyzer
Troubleshooting Guide for 5000 Analyzer
Isolation Procedure
Check for CR14 blinking
Remove moisture generator cable
J2, CR14 will go on. Short Pins 2
and 3 on electronic control amplifier
PCB, CR14 will go off.
Remove J2 and check Pins 1 and 4
for 28Ω.
Remove J2 and remove thermistor
from moisture generator, check for
=100KΩ @ 23 °C.
Leak test system
Verify sample gas is not above
analyzer specifications.
Substitute dryer with known good one.
Supply known dry sample.
Corrective Action
Housing or ambient temperature is too
hot or too cold for the electronic control
amplifier to control moisture generator
temperature.
If not, replace electronic control amplifier
PCB.
If not, replace a moisture generator
heater assembly.
If not 100KΩ, adjust R26 as necessary.
If adjustment will not work, isolate
either the moisture generator heater or
field unit board.
Replace cell.
Replace cell.
Replace trap and/or dryer and flush out
sample system.
Dry-down system.
Dry-down system.
Verify and adjust flow rates.
Replace and/or refill dryer.
Replace and/or refill dryer.
Replace battery.