Floodback

رادیران - برگشت مایع به کمپرسور چیست؟ علل، نشانه‌ها و روش پیشگیری از Floodback Radiran - Liquid Refrigerant Floodback: Causes, Symptoms, and Prevention
04Nov

Liquid Refrigerant Floodback: Causes, Symptoms, and Prevention

Liquid refrigerant floodback occurs when some of the refrigerant entering a running compressor is still in the liquid phase. In systems designed to supply refrigerant vapor to the compressor, this condition can dilute the lubricant, impair lubrication, and, in severe cases, damage mechanical components. The problem often begins when refrigerant does not evaporate completely in the evaporator. However, identifying the root cause requires examining refrigerant feeding, heat transfer, superheat control, and transient operating conditions together. Adjusting or replacing the expansion valve...

By Articles, Technichal Points, Training
Read more...
برگشت مایع به کمپرسور؛ دلایل، نشانه‌ها و روش‌های پیشگیری Liquid Floodback to the Compressor: Causes, Signs, and Prevention Methods
10Oct

Liquid Floodback to the Compressor: Causes, Signs, and Prevention Methods

<p> Liquid floodback to the compressor occurs when, during system operation, some of the refrigerant enters the compressor through the suction line without fully evaporating. This phenomenon, known as “floodback,” can dilute the oil, reduce lubrication quality, and, in severe conditions, cause mechanical damage to the compressor. Replacing a damaged compressor without identifying the cause of liquid floodback does not resolve the problem. To prevent repeated failure, the evaporator’s operation, refrigerant feed control, load conditions, and system protection devices must be examined.

By Articles, Technichal Points, Training,
Read more...
18Nov

Flooding

Flooding (also known as ‘flood back’) is the term used to describe the condition when liquid refrigerant reaches the compressor. This occurs when the amount of liquid fed to the evaporator is more than can be evaporated. There are a number of possible causes of flooding including: • TXV oversized for the application • TXV misadjusted (superheat too low) • System overcharged with refrigerant • Insufficient airflow through evaporator • Dirty evaporator • Evaporator fans not operating • TXV bulb not...

By Articles, Technichal Points, Training,
Read more...
18Oct

Compressor Floodback

Floodback occurs when liquid refrigerant returns to the compressor during the running cycle. Often a service contractor may see a compressor that failed due to floodback, but because of the severity of the damage, he may misdiagnose the problem. System-based causes of slugging and floodback may be different from each other; finding the root of the problem is essential to prevent it from happening again. There can be multiple system causes of floodback, even as basic as lack of airflow because...

By Technichal Points, Training,
Read more...