(3) Main parts status

1) Digital scroll compressor

The variable capacity type compressor to control the capacity up to 10 ~ 100% with 19 steps.

2) Accumulator

To prevent the incoming of the liquid refrigerant to the compressor (prevention of liquid back).

3) Receiver

To reduce the noise by flowing the high pressure liquid refrigerant to the high pressure pipe and to control the amount of refrigerant during the individual operation of indoor unit.

4) Solenoid valve (PWM)

It is installed at the top of digital scroll compressor and at the low pressure pipe, which is used for operating the digital scroll compressor.

When the valve is open, the digital scroll compressor keeps the state of unloading.

5) Solenoid valve (HGBV)

When the low pressure gets lower, the valve is open by the low pressure safety device. The valve is open in order to reduce the load at the start of compressor and when the system stops and then keep the balance of low pressure.

6) Solenoid valve (LBV)

When the compressor is overheated, it actuates to lower the temperature of compressor for stable operation.

7) Solenoid valve (VBV)

The valve is open in order to reduce the load at the start of compressor and when the system stops and then keeps the balance of low pressure.

8) High pressure switch

To stop the system for the system protection when the high pressure exceeds the set value.

9) Low pressure switch

To stop the system for the system protection when the low pressure falls below the set value.

10) Temperature sensor (DTS, Discharge Temperature Sensor)

It is the means to measure the refrigerant temperature of compressor outlet which is used as the data for control of compressor.

11) Temperature sensor (CMS, Condenser Mid Sensor)

It is the detection means to do the optimum control of outdoor fan, which is used as the data for each protection or initial startup.

12) Temperature sensor (COS, Condenser Out Sensor)

It is used as the detection for calculation of over-cooling at the condenser outlet which is referred for the adjustment of refrigerant during refrigerant charging.

13) Temperature sensor (OATS, Outdoor Air Temperature Sensor)

To measure the outdoor temperature which is used for the determination of start method.

14) Fixed scroll compressor

The fixed capacity type compressor.

15) Temperature sensor (FDTS, Fixed Discharge Temperature Sensor)

It is the means to measure the refrigerant temperature of compressor outlet which is used as the data for control of fixed compressor.

IV 37

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Samsung 3759 technical manual Main parts status

3759 specifications

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