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Current measurement diagnosis walk-in cooler fault
author: supermarket refrigerated showcase category: commercial refrigeration Views: 516Time: 2016-08-22
current measurement diagnosis walk-in cooler fault
1. Measurement current diagnosis fault measurement walk-in cooler working current, we can know whether the compressor is started, the defrost circuit is working, and experienced personnel also rely on the current To determine the unblocked condition of the refrigeration system and the amount of refrigerant.
①3A-12A is the compressor circuit is connected, but can not start, there are compressor and accessories problems, the possibility of blockage.
②0.8A-1.4A or equal to the rated current: the compressor is operating normally.
③Slightly smaller than the rated current, generally because there is less refrigerant in the refrigeration system and the compressor load is light.
④Slightly larger than the rated current, the amount of refrigerant is large: the first failure of the machine is that the performance of the compressor deteriorates; the second failure of the machine may also be considered that the amount of refrigerant charged is large.
⑤ The current was normal when it was turned on, but it increased instantly, and the refrigeration system was blocked by welding.
⑥ The current was normal when it was turned on, but increased a lot after a few hours, and the walk-in cooler refrigeration system was blocked by ice.
⑦The inter-cooling walk-in cooler is placed in the defrosting position, and the current is about 0.8A; the defroster can work with heating: otherwise the defrosting heater and series components are open.
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