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Gauges should be attached to both the service ports. 

   

Evacuate the unit down to a minimum of 200 Microns, break vacuum with Nitrogen to further leak

check. 

Re-evacuate the system down to 200 Microns or lower. 

  

This is an R410a system, it is essential that a deep vacuum be pulled on the system to remove all 

traces of moisture.

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