Carrier 69NT40-541-505, Operation And Service Manual, Page: 25 / 143

3–5 T-368
3.1.6 Control Box Section
The control box ( Figure 3.5 ) includes the manual oper-
ation switches, circuit breaker (CB-1), compressor, fan
and heater contactors, control power transformer, cur-
rent sensor module, controller module and the commu-
nications interface module.
3.1.7 Communications Interface Module
(option)
The communications interface module is a slave mod-
ule which allows communication between the refrigera-
tion unit and a ship system master central monitoring
station. The module will respond to communication,
and return information over the ships main power line.
Refer to the master system technical manual for further
information.
Figure 3.5 Control Box Section
1. Compressor Contactor − CH
2. Compressor Phase A Contactor − PA
3. Compressor Phase B Contactor − PB
4. Heater Contactor − HR
5. Controller/DataCORDER Module (Controller)
6. Remote Monitoring Receptacle
7. Start
− Stop Switch, ST
8. Controller Battery Pack (Standard Location)
9. Control Transformer
10. Evaporator Fan Contactor − E1
11. Evaporator Fan Contactor − S1
12. Evaporator Fan Contactor − S2 or EF
13. Evaporator Fan Contactor − E2 or ES
14. Condenser Fan Contactor − CF
15. Circuit Breaker (CB1) − 460V
16. Current Sensor Module
17. Emergency Bypass Switch (EBS)
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