Troubleshooting - BRAND macro Mode D'emploi

Trouble
Suction capacity
impaired
Pipette drips
Pipette not held
properly
Compressed suction
bellows take in air
automatically
Note:
Often visual control of the instrument is sufficient to discover a faulty
device which can easily be replaced by a spare part. The advantages of
do-it-yourself repair are obvious: It saves time and money.
Possible Cause
Filter dirty or valve
system damaged
Filter not properly posi-
tioned or valve system
damaged
Silicone adapter
damaged
Suction bellows or valve
system damaged

Troubleshooting

Action to be taken
Replace filter,
see pages 26-27
Insert filter properly or
replace valve system,
see page 28
Unscrew the adapter
support of the instru-
ment, replace silicone
adapter
Replace the looking ring
with the suction bellows
or the valve system
31