Sample Line Set Configurations; Leak Checking And Evacuation Process - Wine Guardian SP25 Installation, Operation And Maintenance Manual

Sample line Set Configurations

Leak Checking and Evacuation Process

• Pressurize and leak test the interconnecting lines, including the fan coil unit, fittings,
and brazed joints using the intended operating refrigerant, nitrogen, or dry air for leak
testing. A pressure equal to the low-side test pressure marked on the unit nameplate
is recommended for leak testing. Repair any leaks found. Connect a good vacuum
pump to both the low- and high-side service valves while still in their factory supplied
position, isolating the refrigerant charge in the condensing unit. Draw a deep vacuum
of at least 15pp microns. Do not use the motor compressor to pull a vacuum and do
not operate the motor compressor in a vacuum.
• Evacuate the system to hold at 500 microns and break the vacuum by releasing the
factory refrigerant charge in the condensing unit to interconnect lines and fan coil unit
by opening service valves. Remove the vacuum pump. The system is now ready for
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