Ca Components In The Refrigeration Condenser Section; Figure 60. Controlled Atmosphere Components -- Condenser Section - Carrier 69NT40-489-100 Series Operation And Service Manual

8.1.5 CA Components in the Refrigeration
Condenser Section
The refrigeration condenser section (see Figure 60)
contains an air filter assembly, air heater, membrane
pressure transducer, pressure relief valve and pressure
regulator.
The air filter assembly removes dirt and moisture from
the ambient atmosphere. The air filter employs two
drain solenoids to periodically release collected water.
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CA CONTROL BOX REMOVED FOR CLARITY
SIDEWALL VIEW
1. Membrane Air Filter Assembly
2. Pressure Port
3. High Air Temperature Switch (HATS)
4. Air Heater
5. Membrane Pressure Transducer (MPT)
6. Drain Solenoid Valve #2 (DS2)
Figure 60. Controlled Atmosphere Components - - Condenser Section
An air heater is used to warm the ambient air, and the
high air temperature switch is used to protect the CA
system from overheating. A membrane pressure
transducer is used to monitor system performance
during normal operation and CA Pre-Trip. A pressure
relief valve is used to protect the air compressor and
system components from over pressurization due to
system obstructions. A pressure regulator maintains an
optimum pressure level for air compressor and nitrogen
membrane separator performance. An air pressure
gauge can be added for testing purposes.
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7. Drain Solenoid Valve #1 (DS1)
8. Permeate Screen Assembly
9. Pressure Relief Valve
10. Pressure Regulator
11. Flow Meter and Calibration Gas Port
12. Pressurization/Gauge Ports
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T-305