Calibration Check; 32 6.9 Change Vacuum Pump Oil - Bosch ACS 661 Originalbetriebsanleitung

6.8

Calibration Check

This function is used to ensure the ACS 661's internal
scale is always calibrated. During this test, use only the
calibration weight that is provided with the ACS 661.
1. Verify the magnet on the bottom of the ACS 661 is
clean.
2. Select calibration check from the Setup Menu.
 The ACS 661 displays
weight on magnet located on the bot-
tom of machine
3. Attach the calibration weight to the magnet on the
bottom of the ACS 661.
1
Fig. 11: Calibration check
1 Magnet
4. Select F1 to continue.
 The ACS 661 displays
weight from magnet located on the
bottom of machine
5. Remove calibration weight from magnet located on
the bottom of machine
6. Select F1 to continue.
R
If the display shows
scale is in calibration. Select F2 to return to the
Setup Menu.
R
If the display shows
scale is out of calibration. Press F1 again to retry.
If calibration continues to fail, contact Bosch for
assistance.
6.9 Change Vacuum Pump Oil
CAUTION: To prevent personal injury, do
NOT operate the ACS 661 at any other
time without the oil fill port cap installed,
because the vacuum pump is pressurized
during normal operation.
!
It is the responsibility of the user to monitor vacuum
pump oil level and clarity. If contaminated oil is not
removed from the vacuum pump and replaced, the
vacuum pump will be permanently damaged.
Robert Bosch GmbH
Place calibration
Remove calibration
CALIBRATION passed the
CALIBRATION failed
the
Maintenance | ACS 661 | 49
1. Select Pump Maintenance from the Setup Menu or
when prompted.
 The display shows how long the vacuum pump
has operated since the last oil change.
Oil life remaining xxx:xx (hhh:mm)
Change oil now?
2. Press F1 to change vacuum pump oil.
R
If the ACS 661 displays
wait
, allow the vacuum pump to run for two
minutes to warm up the oil.
R
If the oil is already warm, the display shows
Drain used oil from pump and replace
with 150 ml of new oil
3. Slowly open the oil fill cap to verify there is no pres-
sure in the ACS 661.
4. Then carefully remove the cap.
5. Remove the oil drain fitting cap and drain the oil into
a suitable container for disposal.
6. Replace the cap and close tightly.
7. Press F1 to continue.
 The ACS 661 displays
of sight glass with new oil
8. Slowly add vacuum pump oil to the pump through
the oil fill port until the oil reaches the center of the
sight glass.
9. Install the cap on the oil fill port and close tightly.
10. Press F1 to return to the Pump Maintenance screen.
2
Fig. 12: Vacuum Pump
1 Sight glass
2 Filling port
3 Drain port
en
Warming oil please
.
Fill pump to center
3 1
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SP00D00171 2019-07-02