DWM Copeland D9RC4-1000-AWM/D Semi-Hermetic Compressor

The DWM Copeland D9RC4-1000-AWM/D is a semi-hermetic reciprocating piston compressor for commercial and industrial quality applications designed for rugged low to medium temperature refrigeration applications. The 10 HP nominal rated power unit is built with a rugged 3-cylinder design, providing great reliability, mechanical durability and superior thermal efficiency in harsh operating settings.

The AWM/D motor architecture is state-of-the-art, optimized for part-winding or Delta start with minimized in-rush current spikes while remaining within stringent operational parameters under severe load profiles. New zero hour unit with precision reed valve assembly and integrated oil pump lubrication network with full cast iron housing integrity. The new unit is excellent for marine supply plants, deep sea long tail refrigeration systems and industrial blast freezing applications.

Model Details

• Brand: DWM Copeland
• Model: D9RC4-1000-AWM/D
• MPN (Manufacturer Part Number): D9RC4-1000-AWM/D
• Equipment Classification: Semi-Hermetic Reciprocating / Piston Compressor
• Product Condition: Brand New (Original Open-Box / Unused Surplus with factory blanks intact)

Technical Specifications: D9RC4-1000-AWM/D

Main Features

1. Heavy-Duty 3-Cylinder Block: Optimized mechanical balance with a displacement capacity of 38.0 m³/h at 50 Hz to handle high mass flow requirements smoothly.
2. Versatile AWM/D Motor Configuration: Built for 380-420V/3Phase/50Hz power supply with part-winding start layout to significantly reduce locked rotor amperage (LRA) limits.
3. Advanced Reed Valve Engineering: High-durability premium steel reed valves guarantee optimal gas routing and lower parasitic heat transfers during continuous duty cycles.
4. Integral Pressure Lubrication System: Internal displacement oil pump delivers consistent positive oil pressure to critical rod journals and wrist pins, mitigating friction failure risks.
5. Multi-Refrigerant Formulation Cross-Compatibility: Engineered to operate efficiently with standard HCFC and HFC compounds including R22, R404A, and R507A setups.

Applications

• Marine Provision Complexes: Cargo hold refrigeration, walk-in galleys, and deep-sea commercial fishing vessel freezing arrays.
• Industrial Cold Storage: Low and medium-temperature walk-in freezers, distribution hubs, and processing plant cooling loops.
• Blast Freezers: Fast-acting commercial food processing, cryogenic tunnel operations, and rapid thermal reduction configurations.
• Liquid Chiller Systems: Process cooling for manufacturing plants, industrial process machinery heat extraction, and heavy HVAC duties.

Part Number Cross-References

• Direct Legacy Match: Copeland D9RC-1000
• Modern Evolution Alternative: Copeland D3SC-1000 / D3SC-100X (Check line geometry variances prior to installation)
• Standard Electrical Coding Replaces: D9RC4-1000-EWM/D (Voltages match across multi-rated regional grids)

Marine Chief Engineer’s Installation Checklist

1. Electrical Terminal Allocation Bridge: When wiring the AWM/D terminal box block, ensure that you follow the part-winding sequence explicitly if using two contactors. Powering terminals out of sync will reverse internal motor phase orientation, triggering an instantaneous thermal trip or winding breakdown under load.
2. Oil Compatibility Conversion: This model arrives configured with factory-tested mineral oil charges meant for HCFC (R22) retrofits. If you plan to charged-fill this system with HFC alternatives like R404A, you must flush the system clean and replace the crankcase filling with Polyolester (POE) synthetic lubricant to prevent phase separation and starvation.
3. Crankcase Heater Installation: On marine marine provision applications subjected to low engine-room ambient states during layovers, always verify that the crankcase heater is energized during off-cycles. Liquid refrigerant migration to the oil sump will instantly flash upon start, causing severe mechanical oil foaming and premature piston scoring.
4. Pressure Switch Configuration: Set your differential oil pressure protection switch (e.g., Copeland Sentronic or mechanical equivalent) to time-out if oil-to-suction crankcase pressure drops below 0.7 bar for longer than 120 seconds.

Equipment & Spare Parts Compatibility

• Condensing Unit Frameworks: Integrates seamlessly into standard DWM Copeland modular condensing racks, Bitzer-equivalent configurations with 381x305mm spacing, and Carrier-O6E style replacement footprints.
• Original Equipment Spares: Fully compatible with Copeland internal valve plate kit replacements, external capacity regulation heads (230V/115V), and standard oil sight glass thread fittings.