Ametek 900

Maintenance and Troubleshooting | 5-65
HS Code HStatus Alarm Type Condition / Description and Suggested Corrective Action
64 7 Warning w Zero Drift
This condition indicates excessive Zero Drift or Span Error. Exces-
sive Zero Drift is indicated if Zero gas transmission values attained
after a Zero di󰀨er by more than ±10 % from the previous values. A
Span Error occurs if a Span Factor attained after a Span is ≤0.85
or ≥1.15.
Corrective Action:
• Ensure the proper gases are being used for the calibration.
• Check the analyzer to determine if the Measuring Cell, its optics,
and/or sample system is contaminated. Refer to “Analyzer Preven-
tive Maintenance Schedule” and “Measuring Cell Maintenance”
in this chapter to help you determine if these areas need to be
cleaned.
128 8 Warning w SKO temp high (used only if system uses a SKO)
The sulfur knock-out (SKO) temperature is above the Set Point by
more than 5 % of the Set Point value.
Corrective Action:
• From the User Interface:
- Check the current temperature (Show MAI screen) for this
temperature zone and compare it to its Set Point temperature
(TStPt screen).
• Replace the Temperature Sensor (SKO) Daughter board. Con-
tact AMETEK to verify operation before removing this board.
• Replace the Termination board. Contact AMETEK to verify op-
eration before removing this board.

(Show MAI) RUNF6 81..8
(TStPt) RUNF4 01..4
Figure 5-11.
Micro-Interface board.