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2.1.6 Control Box Section
The control box (Figure 2-5) 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
expansion
communications interface module.
1
2
19
18
1.
Compressor Phase A Contactor
2.
Compressor Phase B Contactor
3.
Heater Contactor
4.
Display Module
5.
Communications Interface Module
6.
Controller/DataCORDER Module (Controller)
7.
Key Pad
8.
Start-Stop Switch
9.
Remote Monitoring Receptacle
10.
Manual Defrost Switch
module
and
3
17
16
15
Figure 2-5 Control Box Section
2.1.7 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
the
power line. Refer to the master system technical manual
for further information.
4
14
13
12
11.
Condenser Fan Switch
12.
Controller Battery Pack
13.
Interrogator Connector (Box Location)
14.
Control Transformer
15.
Evaporator Fan Contactor - High
16.
Evaporator Fan Contactor - Low
17.
Condenser Fan Contactor
18.
Circuit Breaker -- 460V
19.
Current Sensor Module
2-5
5
6
11
10
7
9
8
T-322
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