Compressor description by Ralkin

Introduction: The Carrier 06D series is a line of semihermetic reciprocating compressors designed for both air conditioning and refrigeration applications. This series is known for its robust construction, featuring plugged head designs for service applications, and offers versatile capacity control options including electric, pressure, and suction cut-off unloaders.

### Model Identification

The model number 06DR724 can be decoded as follows:

• Digits 1-3: 06D - 06D SEMIHERMETIC RECIPROCATING COMPRESSOR

• Digit 4: R - LOW TEMP - NO UNLOADERS (Refrigeration Application)

• Digit 5: 7 - Nominal Motor Size. Based on the cylinder count determined below, this corresponds to a 5 HP motor.

• Digits 6 & 7: 72 - Displacement and Configuration. The value '72' indicates a displacement of 72 CFM (based on the progression of CFM values in the data). It utilizes the 6D75-259 Crankcase Assembly, features 6 Cylinders, and has a 2" Cylinder Bore.

  • Correction on Motor Size Lookup: Looking at the standard table, digit '2' for 6-cylinders is 8HP and '3' is 10HP. Digit '7' for 6-cylinders is 6.5 HP. However, '72' is not a standard CFM value in the provided table (values are 07, 08, 09, 13, 16, 18, 20, 24, 25, 28, 37, 41). The prompt states "Other CFM values are possible for newer models". Given the model number format 06DR724, let's re-read carefully.

  • Wait, the model provided is 6D63 6D67 06DR724. The last part is 06DR724.

  • Let's re-evaluate Digit 5 (7) and Digits 6-7 (24).

  • Digits 6 & 7: 24 - Displacement 24 CFM. Crankcase: 6D68-259. No. of Cylinders: 6. Cylinder Bore: 2".

  • Digit 5: 7 - With 6 Cylinders, Digit 7 corresponds to a 6.5 HP motor.

  • Digit 8: 4 - The provided data table for Digit 8 lists 0, 1, 2, 3, 5, 6, 7, 8, 9. It skips 4. However, typically 4 is a PROD model or similar. Given the data constraints, I will note it as a Production Model or Specific Configuration as per standard Carrier coding, but strictly following the table, it's not explicitly defined. I will interpret it as a Production Model with Term Box (similar to 0) or simply list the code.

  • Digit 9: 3 - The provided data table for Digit 9 lists A, B, C, D, E, F, G. It skips numbers. This suggests the model number breakdown might be slightly different or I need to look closer. Ah, looking at the example 06DX3376BC3200, Digit 9 is B. In 06DR724, Digit 9 is 4. The table only has letters for Digit 9. This implies 06DR724 might not fit the 14-digit schema perfectly or 4 is a variation not in the specific letter table provided.

  • Alternative Interpretation: The prompt asks me to decode 06DR724. The data tables are the source of truth. If a code is missing, I state what is available.

  • Let's look at the digits again. 06D (1-3) R (4) 7 (5) 24 (6-7) 4 (8) ? (9).

  • Actually, usually 06D models are 14 digits. 06DR724 is only 7 digits. It is likely a truncated representation or a family code.

  • However, the instructions say "Decode… 14-digit model number". The input is 6D63 6D67 06DR724. This looks like a part number or a short code.

  • Let's assume the user wants the decoding of the visible digits based on the schema.

  • Digit 8: 4 - Not in table. I will omit specific description or note as "Production Model (Inferred)".

  • Digit 9: Missing/Not Applicable - The model 06DR724 ends here.

  • Let's re-read the input: 6D63 6D67 06DR724. These look like separate part numbers or variations. The requested model is 06DR724.

  • Let's decode 06DR724 strictly:

    • 1-3: 06D
    • 4: R (Low Temp Refrigeration)
    • 5: 7 (6.5 HP for 6-cyl) OR if 4-cyl? Digit 6-7 is 24. 24 is a 6-cylinder code (6D68-259). So Motor is 6.5 HP.
    • 6-7: 24 (24 CFM, 6 Cylinders, 2" Bore)
    • 8: 4 (Not defined in table, likely a specific production variant).
    • 9+: Not provided.

### Technical Features:

• Design: Semihermetic reciprocating design ensures efficiency and durability for medium to large capacity applications.
• Application Flexibility: The 'R' variation indicates suitability for low-temperature refrigeration duties.
• Capacity Control: While this specific 'R' variation has no unloaders, the 06D family supports various unloading methods including electric, pressure, and hot gas bypass for other models.
• Construction: Features a robust crankcase assembly (e.g., 6D68-259 for 24 CFM models) with standard 2-inch cylinder bores for reliable performance.

### Specifications & Data:

• Model Series: Carrier 06D Semihermetic Reciprocating
• Application Type: Low Temperature Refrigeration (Variation R)
• Displacement: 24 CFM
• Number of Cylinders: 6
• Cylinder Bore: 2"
• Crankcase Assembly: 6D68-259
• Motor Size: 6.5 HP (Derived from Digit 5 '7' with 6-cylinder configuration)
• Unloading: None (Standard for Variation R)
• Electrical: Not fully defined in short code, but standard 06D electrical codes apply (e.g., 3-phase common for this size).