© MAHLE
Maintenance | ACX2120H | 23 en
10.8
Long life pump test
t
The Long Life Pump function equipped on the ACX2120H
enables the unit to optimize the vacuum pump oil use and
avoid the need to replace after every 60 hours of operation.
1.
Aft
ration, check
the vacuum pump oil level and t
ry.
2.
From the
MAINTENANCE
menu, press
until
LONG
LIFE PUMP TEST
is highlighted and press
.
3.
The process will run for approximately 1 hour.
t
During this process, the vacuum pump oil is automatically
pur
rom the gaseous residues absorbed by the oil during
the vacuuming of vehicle A/C systems.
4.
At end of procedure, vacuum pump performance check is
executed and the result is displayed on the display.
t
If the result of the Long Life Pump test is negative, the oil
must be changed.
t
If the results pass, the pump oil remaining time will change
to 1000 hours. After 1000 hours of runtime, the oil must be
changed.
Fig. 27:
Long life pump screen
10.9
Vacuum pump oil change
t
After 60 hours of runtime (or 1000 hours if the Long Life
Pump test is completed successfully), the vacuum pump oil
must be replaced.
1.
Disconnect ACX2120H from power.
2.
Unlock front latch and carefully lift cover.
Fig. 28:
Changing vacuum pump oil
1 Oil filling plug
2 Oil inspection window
3 Lower drain plug
3.
Place a bowl under the vacuum pump oil drain hole. Remove
the upper
plug and the lower drain plug to allow the oil
to drain from unit.
4.
Once the pump has been emptied, reinstall the lower drain plug.
5.
Fill the pump with new oil through the upper port using a
funnel if needed. Fill until the oil appears halfway up the oil level
inspection window.
6.
Once the pump h
reinstall the upper plug.
7.
Carefully close front cover and secure latch.
8.
Connect to power and turn on.
9.
From the
MAINTENANCE
menu, press
until
PUMP OIL
REPLACEMENT
is highlighted and press
. Press the RESET
key to set the counter.
Fig. 29:
Reset vacuum pump oil life
t
The level and clearness of the vacuum pump oil can be checked
by removing the rubber plug located on the front-left side of
the unit.
