MAHLE ACX1281, Operation Manual

Page: 20 / 36

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20 | ACX1281 | Operation en
6.3.2 Decontamination
t
Perform the following steps to remove contaminated
refrigerant from the service hoses and couplers.
1. Select “ Maintenance >> Maintenance >>
Decontamination ” or process continues automatically
after 3 failed identifications.
2. Switch off the ACX1281 unit.
3. Disconnect power cord from outlet.
4. Move unit outside.
5. Connect High and Low side couplers to the Parking/Flush
adapter and open valves to equalize pressure.
6. Close Low side coupler and remove from Parking/Flush
adapter.
7. Connect Low side tank adapter to low side coupler.
8. Pointing adapter away from unit and person, slowly open
valve until low pressure gauge shows 0 bar(g).
9. Close low side coupler and remove Low side tank
adapter.
10. Connect low side coupler to the Parking/Flush adapter
and open valve. Pressure on HP gauge should go down.
11. Close low side coupler and disconnect from parking/
flush adapter.
12. Repeat steps 5-9 until both gauges read 0 bar(g).
t
This process may need to be repeated a number of times
depending on the amount of pressure inside the hoses.
13. After all pressure has been released, connect low side
coupler to Parking/flush adapter and open valve.
14. Connect power to the unit.
15. Switch on the ACX1281 unit.
16. Follow the menu prompting.
t If getting message "High Pressure in System" which
appears after decontamination process begins, pres-
sure has not been relieved from hoses properly. Repeat
above steps starting at 5 to remove error above.
t Following the Decontamination routine, a Refrigerant verifi-
cation should be performed.
Fig. 13: High low flushing adapter / Parking coupler
6.3.3 Refrigerant verification
t
Connect refrigerant identification unit to an external R1234yf
bottle with pure R1234yf.
1. Select "Vehicle A/C Service >> Refrigerant Identification" .
2. Follow the menu prompting.
t
Contact customer service after not passed analysis
for 3 times.