Domestic and commercial sealed hermetic systems
Domestic refrigerators and freezers do not normally have liquid receivers but access to both high and low pressure sides of the system can be achieved by using line tap valves. Some small commercial sealed systems may well fall into this category.
Other commercial sealed systems will have liquid shut-off valves at the receiver and suction service valves at the compressor.
Reference to the reclaim/recovery unit arrangement will show how hose connections can be made.
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