Reason: increased R2 refrigeration discharge pressure

Solution: check the high pressure pressure of the R1 refrigeration unit in operation.

【Water cooling】
The adjusted value is 1.5 MPa.
If the pressure exceeds 1.5 MPa, clean the strainer, check the operation of the cooling tower and secure the water volume.

【Air cooling】
The adjusted value is 1.5 MPa. Compared to water cooling, it is more susceptible to outside temperatures.
If the high pressure always exceeds 2.0 MPa, use an air conditioner and keep the room temperature at around 20°C.
Alternatively, diffuse the exhaust heat from the refrigeration unit with a fan, or cool the R2 refrigeration unit with a spot cooler, etc.

If the above does not improve the situation

Spend the night with the unit ready for operation and check the high and low pressure of the R2 refrigeration unit.
If there is a significant change from the balance pressure attached to the unit, there is a possibility of refrigerant leakage.
(This is not a perfect match as it is affected by the ambient temperature.）