D8SK1-7000-BXW-BM844 Chiller 70 HP Semi Hermetic Compressor

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Name: D8SK17000BXWBM844 Chiller 70 HP Semi Hermetic Compressor
Brand: Copeland
Price: 1 USD

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70 HP Refrigeration Chiller D8SK1-7000-BXW-BM844 Semi Hermetic Compressor

Speciafication:

Compressors in the higher capacity range need some form of capacity control to accommodate varying

refrigeration load. The capacity control kit supplied by DWM Copeland will reduce the refrigeration capacity along

with a similar proportional reduction in Power Input. This ensures optimum performance even in part load.

Capacity control is also required when the condensing pressure falls with a drop in ambient air temperature.

The compressor suction condition, refrigerant volume and mass flow rate will remain unchanged.

Methods of Capacity Control

There are many methods of capacity control for Semi-Hermetic compressors but DWM Copeland use the “Blocked

Suction method” and for the D3D Over Re-expansion method known as Moduload.

Note: Oil circulation in systems with capacity control is more critical.

The 4S, 6S & 8S compressors have an internal capacity control, they work on the principle of blocking the suction

gas passage to two or more cylinders. They require the use of a special cylinder head and a control valve with

solenoid coil. These items may be ordered installed at the factory or in a kit form for later installation.

The suction port of the valve plate will be closed by a control piston (blocked suction). To prevent transport damage

the solenoid valve is supplied loose and the cylinder head is fitted with a shipping plate, therefore the shipping plate

with gasket must be removed and the solenoid valve with new gasket mounted. Do not put the compressor into

operation with the shipping plate this could result in erratic operation of the control piston and inadequate cooling

capacity.

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