Semi-Hermetic Compressors Technical Details
D3DC-75X - AWM
Cooling Capacity at Standard Condition 6.99kW
R404A, Evaporating -35°C, Condensing 40°C, Suction Gas Return 20°C, Subcooling 0K (Dew Point data)
Mechanical Data
Number of cylinders3.0 Displacement @ 50 Hz, cu.m/h38.0
Bore/Stroke, mm60.4/50.8 Length/Width, mm655/370
Height, mm480.0 Net Weight, kg150.0
Gross Weight, kg161.0 Rotalock Discharge, inch1 1/8
Suction, inch1 3/8 Oil Quantity, l3.7
Frequency Range, Hz25 - 60 Base mounting (hole dia), mm381 x 305 (18.0)
Sound Pressure @ 1m, dBA71.2 Sound Power, dBA82.2
High Side PS, bar(g)28.0 Low Side PS, bar(g)22.5
Electrical Data
Maximum Operating Current, A18.3 Locked Rotor Current, A70.0
Default Enclosure ClassIP 54 (IEC 34)  
Mounting Springs4
Crankcase Heater70W Internal
Additional Cooling70W Vertical Air Flow Fan
Unloaded StartAvailable
Capacity ControlModuload
Oil Pressure SwitchOPS2 Electronic Switch
Oil Pressure SwitchOPS2 Sensor
Enclosure ClassIP56
Deep Oil SumpMounted
Adapter KitFor Parallel Operation
Check Valve (NRV)For unloaded start operation
InverterControl Techniques SK 3401
Related Documentation
Copeland Discus™ The Best Gets Even Better
Semi-Hermetic Compressors Product Selection Catalogue (2009)
Technical Information
Semi-hermetic compressors - additional fans
Oil pressure safety control
Mounting parts for semi-hermetic compressors
Starting methods
Semi-Hermetic Compressors Capacity Control
Use of Inverters with DWM Copeland Semi-hermetic Compressors
Oil additives
Model Designation for Copeland Brand Semi-Hermetic Compressor
Unloaded Start for Semi-hermetic Compressors
Refrigeration - Controlling Copeland® Discus 3D Digital
Replacement Guidelines
Replacement Guidelines for 2, 3, 4, 6 & 8 Cylinder S-Series and for 4 & 6 Cylinder Discus
Technical Drawings
Drawing for compressor D3DA50*, D3DC75*, D3SC75*
Semi Ref D2 / D3 / D9: Declaration of Incorporation according to the Machinery Directive 2006/42/EC
Semi Ref D2 / D3 / D9: Conformity Declaration according to the RoHS Directive 2011/65/EU
Wiring Diagramms
Wiring diagram Semi Hermetics D2D, D3, D9 AW*
Related Condensing Unit(s)