AC800 V2.00
9/16
Operating procedure
Recovery function
For the HFO-1234yf system, refrigerant identification is necessarily processed. Only when the purity of
refrigerant is above 98% the recovery is allowed.
Check and empty the used oil vessel before the recovery process is initiated.
The recovery process removes refrigerant from the vehicle A/C system, until a vacuum is reached. During this
process, the refrigerant is purified from any moisture, oil, and foreign particles. The processed refrigerant is then
stored in the internal storage cylinder of the machine, ready for re-use. If any oil is recovered during this process,
the oil will be discharged into the used oil vessel. After the first recovery has been completed, the machine will
pause for 3 minutes, to check if there is any refrigerant left in the vehicle A/C system. Recovery will start again
automatically if there is a pressure rise during the 3-minute pause. At the completion of recovery, the machine will
display and print the total amount of refrigerant recovered and oil if any.
Evacuation function
Select “
Vacuum
” , evacuation is performed to
further remove air and moisture from the vehicle A/C system,
making it ready for oil injection. Evacuation time can be set from 2 to 60 minutes. If the machine has vacuum leak
test function, vacuum test can be selected to effect 10-minute vacuum leak test.
Oil injection function
Select “
Oil injection
”,
set oil volume and new oil is sucked into A/C system by vacuum created by vacuum
function.
UV can be also selected to inject UV dye for future leak detection.
If the vehicle A/C system is not in a vacuum state, oil or dye injection cannot be performed and the machine will
display a warning.
Hose flush,
if hose flush is selected (highly recommended), the process will flush the oil from the wall of the
service hoses and internal pipelines, to make sure the new oil to be injected is not contaminated with the previous
oil injected. This process will take about 5 minutes.