MAHLE AIR-NEX 9380, Service Manual

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| AIR-NEX 9380/9480 | 22 en
14.8 Pump oil change
Required tools:
•
1 flat screwdriver
•
1 Hex key (10 mm)
For replacement, comply with the instructions outlined
below:
1. Disconnect the unit from the mains.
2. Remove the six screws that fix the front door of
the unit and remove it.
3. Place a bowl underneath the machine, right under
the pump oil drain hole. Open the upper plug and
then the lower plug to drain the used oil contained
within the vacuum pump.
4. Once the pump has been emptied, screw the
lower plug again.
5. Fill the pump with new oil through the upper
opening, using a funnel if needed. Bring new oil
level halfway through the oil inspection window.
6. Once the pump has been filled, close the upper
plug.
Once oil has been replaced, switch on the unit and from the
MAINTENANCE menu select PUMP OIL CHANGE: press
OK to reset the counter.
14.9 Dryer filter change
The dryer filter must be replaced after having dehydrated
150 kg of refrigerant fluid, since the filter capacity to keep
the humidity present in the refrigerant will run out.
To replace the dryer filter, from the MAINTENANCE menu
select DRYER FILTER REPLACEMENT: press “START” to
set the counter to zero and to start the filter replacement
procedure. Insert the code of the new filter. Now you can
replace the filter.
Required tools:
•
1 flat screwdriver
•
1 cross screwdriver
•
1 regular or torque Hex key (14 mm)
•
1 Hex key (16 mm)
For replacement, comply with the instructions outlined below:
1. disconnect the HP and LP hoses from other
systems/circuits or vehicles and close the quick
couplers
2. wait the ends the hoses emptying.
3. confirm to have already worn the personal protective
equipment (PPE) and follow the safety regulations in
force.
DANGER OF CONTACT WITH R134a/R1234yf REFRIGERANT
and motor vehicle A/C system oil
4. Before opening the doors of the equipment, switch off
the equipment and disconnect the power supply
cord.
DANGEROUS VOLTAGE HAZARD
5. Remove the six screws that fix the front door of the
unit.
6. Unscrew the 2 connection nuts of the filter by means
of the hex keys.
7. Remove the straps that wind up the filter
8. Install the new filter paying attention to the position of
gaskets and to the direction of the arrow indicating the
fluid flowing direction.
9. Screw the two connection nuts of the filter.
10. Close the front panel
11. Carry out the automatic leak test requested by the
software when switched on again after the filter
replacement.
14.10 Replacement of Active Oil Protection
Cartridge
After six months or after injecting 2 kg of New Oil or UV dye, the
station will show a reminder suggesting the replacement of the
cartridge. To replace the Active Oil Protection Cartridge, from the
MAINTENANCE menu select CARTRIDGE REPLACEMENT: press
“START” to set the counter to zero and to start the cartridge
replacement procedure of each bottle. Enter the code of the new
cartridge. Now you can replace the cartridge.
Oil inspection
window
Upper filling plug
Lower
drain plug
Oil
DRYER
FILTER
NUTS