2 NOTICE: Leaking liquid due to wrong assembly. Pay
attention to the orientation of the sealing ring when
threading it on the tube.
Place the sealing ring (1) on a flat stable surface, e.g., a
table or a workbench, with the wider end downwards.
3 Take the end of the liquid tube and press it into the
sealing ring.
This is the dosing-head end of the tube. The opposite
end is the bottle end.
4 Thread the two fastening nuts (2), paying attention to the orientation.
5 NOTICE: Leaking liquid due to wrong assembly. Pay attention to the orientation of the sealing ring
when threading it on the tube.
Thread the sealing ring (3) from the bottle end of the tube.
6 Slide the sealing ring until the distance (D) is enough for the tube to reach the bottom of the bottle. Recom-
mended distances for typical bottle volumes are listed next.
Typical distances (D) between the sealing ring and the bottle-end of the tube
Thread Bottle volume Distance (D)
GL45 1000ml 220mm
500ml 170mm
250ml 135mm
GL25 25ml 90mm
Connecting the liquid tube
1 Insert the dosing-head end of the tube (1) in the dosing
head (2).
2 Tightly fasten the fastening nut to the dosing head.
3 Insert the bottle end of the tube through the corresponding
hole in the bottle cap (3). The tube should reach the
bottom of the bottle.
4 If needed, attach the suction filter (4) to the bottle end of
the tube.
5 Tightly fasten the fastening nut to the bottle cap.
6 Screw the cap to the bottle (5).
The suction filter is used to ensure that no particles or
impurities are carried through the liquid dosing head. Using
the suction filter will extend the lifetime of the dosing head.
However, when dosing solutions, molecules of one of the
substances might be absorbed by the suction filter, altering
the concentration of the solution. The suction filter should only be used when dosing pure solvents.
Connecting the air tube
WARNING
Injury and/or damage due to reacting substances
When pressure is released from the bottle, the air/gas in the bottle moves back towards the
pump. The air/gas coming from the coupled outlets mixes in the pump. Molecules of the
substances in the various bottles can get in contact through this contaminated air/gas.
1 Do not connect bottles with incompatible liquids to the same pump simultaneously.
2 Before connecting a second, incompatible liquid to the pump, disconnect the first bottle and
purge the pump cavity with clean air/gas.
en
9QL3 Pump