6-56 | Model 933 UV Analyzer
Alarm Type / Alarm Condition Description and Suggested Corrective Action
Warning Sample Pressure Hi The sample pressure is above 99 % of the full-scale range.
Note: This alarm is used only by analyzers equipped with the optional
pressure transducer.
Corrective Action:
• Check the sample gas pressure gauge and ensure that it is at an
appropriate pressure (80 PSIG). Adjust the sample gas pressure regulator
until the sample gas is at an appropriate ow and pressure.
• From the Output Setup dialog box, conrm the Low Scale and High
Scale pressure settings are correct.
Take appropriate safety precautions, open the Lower Enclosure, and:
• Check the pressure transducer.
• Conrm that the Measuring Cell pressure transducer jumpers on the
Customer I/O board are congured correctly (see “Compensations” in
Chapter 4).
Fault Internal Comm This serious system Fault condition indicates the Host Controller board
cannot establish reliable communications with the Microcontroller board.
Corrective Action:
Take appropriate safety precautions and:
• Cycle the analyzer AC power o for a minimum of 15 seconds before
cycling it on again.
• If this doesn’t correct the alarm, take appropriate safety precautions, click
Reset M933 on the Analyzer Information dialog box.
• If this doesn’t correct the alarm, take appropriate safety precautions, open
the Electronics Enclosures, and:
- Reset the Host Controller board (SW100, Lower Enclosure – see
Figure 6-15).
- Reset the Microcontroller board (SW400, Upper Enclosure – see
Figure 6-16).
• Check the connections of the cable between the Host Controller (J300)
and Micro-Interface (J104) boards. Inspect it for damage (cuts, nicks,
burn marks, etc.).
• Replace the Microcontroller, Host Controller, and/or Micro-Interface
boards. Contact AMETEK to verify operation before removing any of
these boards.
Setup (tab)Info
Setup (tab)Output
To Next Page
