Shenzhen Envicool Technology Co., Ltd.
Airflow
The equipment of all models is designed to discharge abundance of air uninterruptedly, so any
abnormal airflow block near the indoor and outdoor units should be removed at once.
The components of the cooling system should be checked every month to see if there are faults or
worn down components. In most cases, the system breaks down first, and then the component wears
down. Periodic inspection can prevent most components from wearing down. The cooling pipe must
be firmly fixed without vibrating with the frames on the floor or of the equipment. Check if the
cooling pipe is worn down and if it is firmly fixed every six months.
Suction pressure
Suction pressure is mainly determined by the indoor temperature and humidity and heat
transfer of the evaporator. The range of pressure depends on the specific refrigerant model.
For specific values, seen in Table 6-1.
Discharge pressure
Discharge pressure is mainly determined by the outdoor temperature and humidity and heat
transfer of the condenser. The range of pressure depends on the specific refrigerant model.
For specific values, seen in Table 6-1.
Table 6-1
Parameters of the pressure operating range of the refrigeration system
Suction pressure of
the compressor
Discharge pressure
of the compressor
Expansion valve
The expansion valve can ensure supply appropriate amount of refrigerant to the evaporator, meeting
the load requirement and ensuring certain return air superheat. By measuring the return air superheat,
you can confirm if the expansion valve works normally. If there is less refrigerant in the evaporator,
the superheat will be higher than normal value. Vice versa, if there is too much refrigerant in the
evaporator, the superheat will be lower than normal value. The normal return air superheat is 5K to
10K.
Air-cooled condenser
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