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Quick connects are for one time use only. Once disconnected, the coupling cannot be re-used. Refrigerant leaks
will occur if the couplings are re-used resulting in poor system performance.
• Excess line set length should never be allowed to coil in the vertical position. Excess line length should be laid flat on
its side.
Leak Testing
• After all connections are complete the refrigeration system must be tested for leaks.
• Failure to perform a leak test can result in unsatisfactory system performance, additional servicing and service costs,
and possible system failure.
• Leak test should be performed using an electronic leak detector.
• All joints and components, both factory and field installed, should be thoroughly inspected for leaks.
• The system installation must be leak free!
Leak Testing “PR” model systems
• Open both the liquid and suction service valves.
• Ensure the solenoid valve is energized and open.
• Add 50 psi refrigerant, then pressurize with dry nitrogen to the low side test pressure identified on the unit rating
label.
• Allow thirty minutes for refrigerant to reach all parts of the system.
• Check all joints and components with an electronic leak detector.
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