A&D Weighing AD-1690 - Manual (Page 22)

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3) Installing the filter unit
Install the filter unit with the filter element replaced, or with a new filter unit, into
the main unit following this procedure:
1. Connect the tubes to the both sides
of the filter unit.
At this time, be careful that the direction
of the filter unit is correct (Refer figure
at the right). When inserting, do not turn
the tube.
2. Install the filter unit into the holder.
* If particles of dust invade the tube, they may cause trouble. When replacing the
filter, be careful that no dust invades the instrument.
(4) Note
1. Checking the Leak Tester (main unit)
- Insert the adapter into the connecter opening, and insert the air plug into the
connecter opening on the other side.
- Turn the power supply of the main unit on. Press the START key.
- When detecting leakage inside of the main unit, the main unit displays “
fa1l ”.
- When displaying “
fa1l ” , confirm that the each of the connector parts , filter unit
are securely connected.
When displaying “ fa1l ” after this operation, contact the local A&D dealer for
service.
2. Size of the instrument measured
The object instrument is up to an inside capacity of about 50 ml.
The Leak Tester can test the leakage of a pomp, container or plumbing that have
a capacity less than about 50 ml.
3. The tip that is connected to the attachment end is a consumable.
When the attachment tip is warn, damaged or not matching up with the pipette,
replace it with a new tip.
4. The internal leak quantity, of the Leak Tester, may increase due to dust invasion.
In this case, change the setting of the pressure change value to within possibility.
Main unit bottom side
1
2
Holder
Filter unit
Tube