Mettler Toledo QL3 Referenzhandbuch Seite 15

2 Remove the air tube from the bottle by firmly pressing
down the ring (3) and pulling the tube (4) simulta-
neously.
3 If necessary, e.g., for maintenance purposes, use the
same procedure to remove the air tube from the tube
adapter: firmly press the ring and pull the tube simulta-
neously.
Using the pump with external gas
The liquid can be protected by feeding an external gas, e.g., nitrogen, to the pump. Make sure that the pressure
of the external gas does not exceed 0.5 bar (7.2 psi).
Injury and damage to the pump or the bottle due to high pressure
High pressure from external gas can damage the pump or the bottle.
1 Use a regulator on the external gas line.
2 Ensure that the pressure of the external gas does not exceed 0.5 bar (7.2 psi).
A regulator is connected to the external gas line.
1 Remove the muffler from the air inlet (1).
2 Connect the tube of external gas (2) to the air inlet (1).
Note
Outer tube diameter: 6 mm
Pressure in external gas line: The pressure must be at
least 0.1 bar (1.5 psi). The pressure must not exceed the
configured dosing pressure set on the terminal.
The external gas tube is not provided by METTLER
TOLEDO.
Collecting contaminated air
Injury or death due to toxic, explosive, or flammable substances
If you use toxic, explosive, or flammable liquids with the pump, the exhaust air will be contam-
inated.
Connect a tube to the exhaust air outlet to collect the contaminated air.
QL3 Pump
WARNING
WARNING
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