Metek 920, Operator'S Manual With Essential Health And Safety Requirements

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Maintenance and Troubleshooting
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5-61
HS Code HStatus Alarm Type Condition / Description and Suggested Corrective Action
2 2 Warning w Out of Range
The concentration of the output exceeds its normal operating full-
scale range by more than 10 %.
Corrective Action:
• From the Output screen, check that the full-scale range is
correct for the current sample. If this Warning persists during
normal operation, contact AMETEK. A range change and recali-
bration may be required.
4 3 Fault f Comm Fault
This serious system Fault condition indicates the Host Controller
board cannot establish reliable communications with the Micro-
controller board.
When this Fault is detected, “ CommFault ” is displayed immedi-
ately on the lower line of the User Interface to indicate the same
serious system alarm as “ f CommFault ”.
Corrective Action:
Take appropriate safety precautions, open the Electronics Enclo-
sure, and:
• Check the flat cable between the Host Controller board (on
door inside Electronics Enclosure) and Micro-Interface board
(mounted to Electronics Enclosure backpan) for proper connec-
tions and inspect it for damage (cuts, nicks, burn marks, etc.).
• Ensure the actuators on switch S100 on the Micro-Interface
board are positioned toward the middle of the board. See Figure
5-11 for the location of this switch.
8 4 Fault f RxData Fault
This serious system Fault condition indicates the
Host Control-
ler
board is not receiving analytical data from the
Microcontroller
board.
When this Fault is detected, “ NoData ” is displayed immediately on
the lower line of the User Interface to indicate the same serious
system alarm as “ f RxData Fault ”.
Corrective Action:
Take appropriate safety precautions, open the Electronics Enclo-
sure, and:
• Check the Chopper Wheel Optocoupler cable connection.
• Check the flat cable between the Optical Bench board ( J103 )
and the PMT Buffer for proper connections and inspect it for
damage (cuts, nicks, burn marks, etc.).
• Check the PMT high-voltage connections at the
Optical Bench
board (
J101, J102
) for proper connections.
• Check the flat cable between the Optical Bench board and the
Micro-Interface board for proper connections and inspect it for
damage (cuts, nicks, burn marks, etc.).
• Check the Chopper Wheel motor connection.

(Output) RUN

F2 6

1..4

See Ribbon Cable
Interconnect drawing in
Appendix A.

See Ribbon Cable
Interconnect drawing in
Appendix A.