Carrier 69NT40-561-300, Operation And Service Manual

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3–1 T-365
SECTION 3
DESCRIPTION
3.1 GENERAL DESCRIPTION
3.1.1 Refrigeration Unit - Front Section
The unit is designed so that the majority of the components are accessible from the front (see Figure 3.1 ). The unit
model number, serial number and parts identification number can be found on the serial plate on the back wall of
the condenser section.
3.1.2 Fresh Air Makeup Vent
The function of the upper or lower makeup air vent is to provide ventilation for commodities that require fresh air
circulation. A manually operated venting system is located in the upper left access panel.
The optional eAutoFresh vent system is used to moderate the atmospheric level in the container in response to
cargo respiration. When transporting frozen cargo loads the vent will be closed. The upper left access panel con-
tains the vent slide and motor assembly. It may be removed to allow entry into the evaporator section where the
CO
2
sensor and drive pack are located.
Figure 3.1 Refrigeration Unit - Front Section
1. Access Panel (Evap. Fan #1)
2. Fork Lift Pockets
3. Control Box
4. Unit Display
5. Key Pad
6. Remote Monitoring Receptacle
7. Start-Stop Switch, ST
8. Compressor 9. Supply Temperature Supply/Recorder Sensor
Assembly (STS/SRS)
10. Economizer
11. Ambient Temperature Sensor (AMBS)
12. Power Cables and Plug (Location)
13. Autotransformer
14. Condenser Grille
15. Upper Fresh Air Makeup Vent Panel (Evap.
Fan #2)
- - - - -
* Unit may be modi-
fied for Xtend-
FRESH atmosphere
device. Refer to the
T366 XtendFRESH
manual for more in-
formation
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