6. Disconnect the relay wiring harness (I) from the peripheral board.
7. Disconnect the three connectors (J, K, and L) of the gas/cell temperature
monitoring harness from the peripheral board.
8. Remove the four screws (H), spring washers (G), and flat washers (F).
9. Remove the peripheral board (A) from the analyzer.
CAUTION
ELECTROSTATIC DISCHARGE
Wear an ESD wrist strap or ground yourself to prevent damage to the replacement
peripheral PCA board.
10. Discard the unserviceable peripheral board observing all local and federal laws
regarding disposal of electronics.
11. Remove the replacement peripheral board from the shipping package and inspect
for damage. If damaged, contact your local Customer Care representative.
12. Secure the peripheral board by fitting the four screws (H), spring washers (G), and
flat washers (F) retained during the removal procedure.
13. Torque tighten the screws to 0.6 Nm.
14. Connect the three connectors (J, K, and L) of the gas/cell temperature monitoring
harness respectively to connectors J9, J24, and J37 on the peripheral printed circuit
card (PCA).
15. Connect the relay wiring harness (I) to the peripheral board.
16. Connect the peripheral board ribbon cable (B) to the peripheral board.
17. Secure the TEC board ribbon cable (D) to the connector of the peripheral board
ribbon cable (B) with a cable tie (C).
18. Connect the 12 V power wiring harness (D) to the peripheral board (A).
19. Close the enclosure as described in
and secure with the
captive M16 bolts and engage the threads on the rear housing.
20. Remove Lock-Out Tag-Out labels.
21. Apply power to restart the analyzer.
7.14
Replacing the motherboard
Observe all safety precautions before starting this procedure.
DANGER
ELECTRIC SHOCK
This article is in accordance with IEC 60079-0: 2011 Clause 30.
Death or personal injury may result if this is not observed.
The analyzer uses mains voltage that is dangerous to life. Make sure that the circuit
breakers are set to OFF and tagged off before opening the front cover.
Reference Manual
Troubleshooting and diagnostics
00809-0100-5800
September 2019
Rosemount CT5800
127
Summary of Contents for Rosemount CT5800
Page 20: ...Contents Reference Manual September 2019 00809 0100 5800 xx Emerson com Rosemount ...
Page 34: ...Plan Reference Manual September 2019 00809 0100 5800 34 Emerson com Rosemount ...
Page 60: ...Startup procedure Reference Manual September 2019 00809 0100 5800 60 Emerson com Rosemount ...
Page 90: ...Gas calibration Reference Manual September 2019 00809 0100 5800 90 Emerson com Rosemount ...
Page 168: ...Shutdown procedure Reference Manual September 2019 00809 0100 5800 168 Emerson com Rosemount ...
Page 178: ...Theory of operation Reference Manual September 2019 00809 0100 5800 178 Emerson com Rosemount ...
Page 180: ...Spare parts list Reference Manual September 2019 00809 0100 5800 180 Emerson com Rosemount ...