Mettler Toledo QLX3 Benutzerhandbuch Seite 21

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.
Connect a tube (1) to the exhaust air outlet (2) to collect
the contaminated air into a safe container (3).
Note
Outer tube diameter: 6 mm
The exhaust air tube and the container are not provided
by METTLER TOLEDO.
QLX3 liquid module
WARNING
WARNING
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