4-5
c. Fully backseat (to close off gauge port) the suction
service valve (see Figure 1-3) and remove the service port
cap.
d. Connect charging line between suction service valve
port and cylinder of refrigerant-134a. Open VAPOR valve.
e. Partially frontseat (turn clockwise) the suction service
valve and slowly add charge until the refrigerant appears at
the proper level (refer to section 4.6.1).
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