Control Box Section; Communications Interface Module; Figure 3.6 Control Box Section - Carrier 69NT40-541-001 Operation And Service

3.1.7

Control Box Section

The control box (Figure
heater contactors, control power transformer, fuses, key pad, display module, current sensor module, controller
module, and the communications interface module.
3.1.8

Communications Interface Module

The communications interface module is a slave module which allow communication with a master central monitor-
ing 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.
1
19
21
20
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
T-316
3.6) includes the manual operation switches, circuit breaker (CB-1), compressor, fan and

Figure 3.6 Control Box Section

2
18
15
16
17
3
13 12
14
12. Controller Battery Pack
13. Interrogator Connector (Box Location)
14. Control Transformer
15. Evaporator Fan Contactor - E1
16. Evaporator Fan Contactor - S1
17. Evaporator Fan Contactor - S2 or EF
18. Evaporator Fan Contactor - E2 or ES
19. Condenser Fan Contactor
20. Circuit Breaker - 460V
21. Current Sensor Module
- - - - -
3–6
5
4
11 10 9
6
7
8