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18-GJ89D1-1D-EN
6. Pressurize the refrigerant lines and evaporator coil to 150 PSIG
using dry nitrogen.
7. Check for leaks by using a soapy solution or bubbles at each
brazed location.
Important: Do not open the service valves until the refrigerant lines
and indoor coil leak check and evacuation are complete.
8. Evacuate until the micron gauge reads no higher than 350
microns, then close off the valve to the vacuum pump.
9. Observe the micron gauge. Evacuation is complete if the micron
gauge does not rise above 500 microns in one (1) minute.
a. Once evacuation is complete blank off the vacuum pump and
micron gauge, and close the valves on the manifold gauge
set.
Note: Charge system using Outdoor unit’s Installer Guide or Service
Facts.
Note: Use soapy water to wipe any refrigerant oil off the panels.
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