Diagnostics; Fault Messages; Clearing Faults - Ametek LAND MILLWATCH User Manual

Single Stream

18 Diagnostics

18.1 Fault Messages

To check the fault messages press DIAGS.
The number of system faults is displayed. Press DIAGS again to list individual
messages.
The diagnostics display has no affect on the operation of the monitor.
Fault
ADC FAULT
*COOLER FAILURE
ZERO DRIFT
SPAN COEFFICIENT OUT OF LIMITS
FLOW RATE FAULT
*PERISTALTIC PUMP FAILURE
5V REF FAULT
FAIL IN CALIBRATION
CALIBRATION ABORTED
NO CAL GAS
*EEPROM CHECKSUM ERROR
*These errors will cause the monitor to shutdown. During this time all outputs will read zero. The monitor will
automatically return to normal operation when the faults are rectified.

18.2 Clearing Faults

To manually trigger an automatic calibration, set TYPE to MANUAL and press CAL.
SETUP > CLEAR FAULTS > YES > SETUP
User Guide
Possible Cause
Microprocessor failure may cause
false readings
Cooler is less than 10% below
ambient for more than 5 minutes
Electronic fault, cooler fault
Ambient temperature is too high
Gas sensor has failed
New sensor is settling
Sample gas is entering the monitor
Contaminated ambient air
Sensor saturated, the sensor has
been exposed to excessive amounts
of CO. The sensor will recover if run
on air
Sensor expired
Calibration has failed
Calibration gas is not reaching
sensors
Low sample gas flow
Sample pump failed
Either gas stream probe, probe filter
or sample line blocked
Sample chiller failed (frozen)
Faulty connection to pump
Pump failed
Electronics fault
This message is followed by one of
the following
Calibration was stopped by an
operator
No calibration gas is available
Electronic error
Millwatch / Silowatch
Suggested Solution
Contact AMETEK Land
Check air supply to cooler
Contact AMETEK Land
Replace sensor assembly
Reset faults and recheck
Check for leaks
May correct itself at next change over
Reset the fault
Replace sensor assembly
Check calibration gas concentration in
setup menu matches calibration gas
certificate
Check for leaks in sample path
Replace pump
Remove probe and clean
Replace sample chiller
Check condensate pump is running?
(does it turn when power on?)
Replace pump
Contact AMETEK Land
Repeat calibration
Check calibration gas cylinder pressure
gauge replace the calibration gas when
gauge reads less than 20 bar (290 psi).
Check that the calibration gas pressure
regulator is switched on. Check the
pipe work is connected correctly. Leak
test the pipe work.
Contact AMETEK Land
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