Rtaa Refrigeration System And Control Components; Compressor Description; Compressor Motor - Trane RTAA-70 Installation & Maintenance Manual

Figure 32

RTAA Refrigeration System and Control Components

1. Discharge Service Valve
2. Oil Separator
3. 1/4" Angle Valve
4. Oil Cooler
5. Quick Connect Shutoff
Valve or Angle Valve
6. Oil Temperature Sensor
7. Condenser
8. Saturated Condenser Rfgt.
Temp Sensor
RTAA-SVX01A-EN
Operating Principles
9. Subcooler
10. Low Pressure Switch
11. Liquid Line Service Valve
(Backseat Port Upstream)
12. Schrader Valve
13. Filter/Dryer
14. Sight Glass
15. Electronic Expansion Valve
16. 1/4" Angle Valve

Compressor Description

The compressors used by the Model RTAA Series "R" Air-cooled chiller
consists of two distinct components: the motor and the rotors.

Compressor Motor

A two-pole, hermetic, squirrel-cage induction motor (3600 rpm) directly drives
the compressor rotors. The motor is cooled by suction refrigerant gas from
the evaporator, entering the end of the motor housing through the suction
line.
17. Saturated Evaporator Rfgt.
Temp. Sensor
18. Relief Valve
19. Compressor Suction Rfgt. Temp
Sensor
20. Suction Service Valve
21. Evaporator Entering Water
Temp. Sensor
22. Evaporator Leaving Water
Temp. Sensor
23. Entering Water Connection
24. Leaving Water Connection
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