Carrier TRANSICOLD 69NT20-274 Operation And Service page 14

1
18
1. Compressor Contactor (C)
2. Condenser Fan Motor Relay (CF)
3. Heat Relay (TH)
4. Evaporator Fan Motor Relay --- High Speed (EF)
5. Current Transformer (CT)
6. Terminal Block (TB)
7. Microprocessor Control Box
8. Remote Monitoring Receptacle (RM) (Optional)
9. Manual Defrost Switch (MDS)
10. Start-Stop Switch (ST)
11. Microprocessor Control Panel (Display)
Revised 8-6-93
Downloaded from ManualsNet.com
UNITS WITH TWO-SPEED EVAPORATOR MOTOR
2 3 4 5
17 16 15
UNITS WITH ONE-SPEED EVAPORATOR MOTOR
Figure 1-4. Control Box
search engine
6 7
Cool Heat Defrost
SETPOINT/Code AIR TEMP/Data
13,14 12
12. Control Transformer (TR)
13. Control Fuse (F) (6 amp)
14. Fuse (F3A & F3B) (5 amp) Slow Blow
15. Voltage Switch (VS) (Optional)
16. Circuit Breaker (CB-1) --- 460V
17. Potential Transformer (PT)
18. Circuit Breaker (CB-2) --- 230V (Optional)
19. Evaporator Fan Motor Relay --- Low Speed (ES)
20. Battery Module Switch (BMS) --- Optional
20 Condenser Fan Switch (CFS) --- Optional
1-6
19
15
In range Alarm
DataCORDER
11
8
20
9
10