Refrigerant Line

Restriction in the refrigerant line will be indicated by:
1. Suction line - A restricted suction line will cause low suction pressure at the compressor, low discharge pressure and little or no cooling.
2. Discharge line - A restriction in the discharge line generally will cause the discharge line to leak.
3. Liquid line - A liquid line restriction will be evidenced by low discharge and suction pressure and insufficient cooling.

Refrigerant flexible hoses that have a low permeability to refrigerant and moisture are used. These low permeability hoses have a special nylon layer on the inside.