What is the difference between an air receiver and an air compressor? Do they both need an inspection?
• driving motor • compressor – which compresses the air • air receiver – which is a pressure vessel which stores the compressed air The air receiver is the only part of the air compressor unit which needs a “statutory” examination. The air compressor and driving motor do not need an inspection – but should be regularly serviced/maintained by the user. Some air compressors only have two components – driving motor and air compressor and the delivery of compressed air is immediate and the need to store air in a pressure vessel is not required. Because these compressors do not have air receiver they do not need examination. The term “compressor” is also used for refrigeration compressors on fridges, cold stores, freezers and air conditioning systems. Refrigeration compressors only require examination under regulations where the driving motor exceeds 25kw. The majority of commercial cold stores operate using motors well below this limit.
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