TIF 25150B Refrigerant Recovery Machine - Manual (Page 8)

8
1. Allow the tank to sit undisturbed for 24 hours. This
allows the air to rise to the top.
2. Connect a manifold to the tank and read the
amount of pressure in the tank by looking at the
output pressure gauge.
3. Determine the ambient temperature in the room.
4. Refer to a Refrigerant pressure/temperature chart.
Find the temperature on the chart and look across
to the corresponding pressure for the type of
refrigerant in the tank. Determine how that relates
to the reading on the gauge.
5. If the pressure reading is higher than the pressure
shown on the chart, very slowly (so as not to
cause turbulence inside the tank) crack open the
vapor port valve. Watch the pressure on the
gauge decrease. To prevent venting, add 4-5 psi
to the pressure shown on the chart. when the
gauge corresponds to that pressure, close the
vapor port valve.
6. Allow the tank to sit for 10 minutes and check the
pressure again.
7. Repeat the process again if necessary.
PURGING NON-CONDENSABLE GASES
FROM REFRIGERANT TANK