| Distribution of refrigerant gas loop components and their influence on the high and low pressure areas. |
| The liquid tank condenser is assembled in the high pressure area; separation between the liquid in the low and high pressure areas is achieved with a butterfly (throttle) or expansion valve. |
| Excessive filling with refrigerant gas or cooling gas oil, as well as a dirty condenser, damaged fan radiator, clogged system or humidity penetration in the cooling gas loop (ice formation on the butterfly (throttle) or on the expansion valve) are all factors that produce excessive pressure. |
| The evaporator, the collection loop and the temperature sensor of the evaporator are located In the low pressure area; separation between the high pressure gas area and the low pressure gas area is implemented by the compressor. |
| The system pressure can decrease together with loss of refrigerant gas due to a leak in the butterfly (throttle) and/or expansion valve (throttle zone), due to malfunction in the compressor or the presence of ice in the evaporator. |
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