Analysis of the causes of low pressure alarm during operation of water cooled chillers
The refrigerant in the compressor refrigeration system is insufficient.
One of the high-pressure or low-pressure meters is broken.
3. The filter is blocked or the condenser has insufficient heat dissipation; The throttle (expansion valve) may be blocked.
4. The refrigeration system does not match, the copper tubes in the evaporator are too long, and the copper tubes in the condenser are too short.
5. If the high-pressure meter is also low, the possibility of refrigerant leakage or refrigerant leakage is quite high.
If there is only an accidental low pressure alarm when the water chiller is just turned on, then everything is normal, which is within the allowable range; Before starting the compressor, it is necessary to start the cold water pump first, but generally the control system has a compressor delay, and users only need to start it. The water pump will run first, and the compressor will not start until a delay has elapsed.
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