Carrier 69NT40-489-100 Series - Control Box Section; Communications Interface Module; Figure 6. Control Box Section

10T-305
2.1.7 Control Box Section
The control box (Figure 6) includes the manual
operation switches, circuit breaker (CB-1), compressor,
fan and heater contactors, control power transformer,
fuses, key pad, display module, current sensor module,
refrigeration controller module and the communications
interface module.
2.1.8 Communications Interface Module
The communications interface module is a slave
module which allow communication with a master
central monitoring station. The module will respond to
communication and return information over the main
power line. Refer to the master system technical manual
for further information.
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1. Compressor Contactor
2. Heater Contactor
3. Display Module
4. Communications Interface Module
5. Controller/DataCORDER Module (Controller)
6. Key Pad
7. Emergency Defrost Light
8. Start-Stop Switch
9. Remote Monitoring Receptacle
10. Manual Defrost Switch
11. Condenser Fan Switch
12. Emergency Defrost Switch
13. Emergency Defrost Fuse
14. Emergency Bypass Switch
15. Controller Battery Pack
16. Interrogator Connector (Box Location)
17. Control Transformer
18. Evaporator Fan Contactor - High Speed
19. Evaporator Fan Contactor - Low Speed
20. Condenser Fan Contactor
21. Circuit Breaker -- 460V
22. Current Sensor Module
Figure 6. Control Box Section