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8 • Maintenance and servicing
80116-443
10.16
Basic suction
Test setup
• As for the previous test.
Test procedure
1. Ascertain and note the basic suction time in the Setting mode (P. 5),
see page 26. Set the blocked suction time to 20 s for this test.
2. Exit the Setting mode. Switch unit off and back on for this purpose.
3. Keep footswitch pedal pressed. The suction must be activated.
4. Set IES 2 to:
–Operation suction: 80%
– Basic suction: 30%
– Run-on time: 0 sec
5. Release the footswitch pedal. The suction must change audibly from
the operation suction to the lower suction power of basic suction.
After approx. 30 s basic suction, the suction has to be switch off com-
pletely.
6. Reset the basic suction time is reset to the old value.
Filter recognition
Test setup
• As for the previous test.
Test procedure
1. Keep footswitch pedal pressed. The suction must be activated.
2. During activation, remove the main filter. The suction must switch off
immediately and the Filter expended display must light up red.
3. End the activation.
4. Wait at least 10 s. Then replace the main filter. The Filter expended
display must go out.
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