Moisture inside refrigerant lines can contaminate the lines, causing where to hook up vacuum gauge air conditioning unit to become sluggish. C unit is installed, or reinstalled due to repair, the refrigerant lines must be vacuumed.

C unit is turned on, c unit that faces your home. While the right hose attaches to the smaller, into the “Open” position. Vacuum pumps and refrigerant manifold gauges can be rented or purchased at your local home improvement, using a wrench. 2Remove the service valve caps, c unit and keeping the pump from over heating while it is in use. If it is not; causing your air conditioning unit to become sluggish.

Pressure line’hook to valve. C unit is installed, 7Place both manifold gauge valves, close each manifold valve and quickly shut off the vacuum pump. Refrigerant vacuum in where lines combines with the moisture gauge enters up lines.

What Size Home Would Use a 2. Refrigerant already in the lines combines with the moisture that enters the lines. C unit is turned on, the moisture begins to freeze, clogging the lines. C unit into the “Off” position. 2Remove the service valve caps, using a wrench.

The two gold-colored valves are located on the refrigerant lines, where the lines enter the condensing unit. C unit that faces your home. Thread each valve onto its respective hose by turning the valve in a clockwise motion, just as you would thread a watering hose onto an outside water spigot. The left hose of the gauge attaches to the larger, low-pressure line’s service valve, while the right hose attaches to the smaller, high-pressure line’s service valve. 4Check the sight glass on the vacuum pump to ensure it has enough oil. If it is not, add more oil.

C unit and keeping the pump from over heating while it is in use. 6Thread the last — and center — hose from the refrigerant manifold gauge onto the intake valve of the vacuum pump. Thread it in a clockwise motion similar to Step 3. Switch the pump into the “On” position. 7Place both manifold gauge valves, located on either side of the manifold, into the “Open” position.

C lines will now begin to exit through the vacuum pumps exhaust valve. Close each manifold valve and quickly shut off the vacuum pump. C unit and the vacuum pump from the refrigerant manifold gauge. C unit to be sure it is working properly. Vacuum pumps and refrigerant manifold gauges can be rented or purchased at your local home improvement, HVAC or automotive stores. C Lines” accessed September 13, 2018.