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2.1.7 Control Box Section
The control box (Figure 2-6) 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;
controller module and the communications interface
module.
1
24
23
22
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 (if equipped)
11.
Condenser Fan Switch
12.
Emergency Defrost Switch
T-285
2
21
20
19
18
Figure 2-6 Control Box Section
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.
3
17
16
15
14
13.
Emergency Defrost Fuse
14.
Emergency Bypass Switch
15.
Controller Battery Pack
16.
Interrogator Connector (Box Location)
17.
Control Transformer
18.
Evaporator Fan Contactor - E1
19.
Evaporator Fan Contactor - S1
20.
Evaporator Fan Contactor - S2 or EF
21.
Evaporator Fan Contactor - E2 or ES
22.
Condenser Fan Contactor
23.
Circuit Breaker -- 460V
24.
Current Sensor Module
2-6
5
4
13
12
11
10
9
6
8
7
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