Metrohm 843 Pump Station with membrane pump - Manual (Page 16)

3.1 Setting up the instrument
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843 Pump Station with Membrane Pumps
3 Installation
3.1 Setting up the instrument
3.1.1 Packaging
The instrument is supplied in highly protective special packaging together
with the separately packed accessories. Keep this packaging, as only this
ensures safe transportation of the instrument.
3.1.2 Checks
Immediately after receipt, check whether the shipment has arrived com-
plete and without damage by comparing it with the delivery note.
3.1.3 Location
The instrument has been developed for operation indoors and may not be
used in explosive environments.
Place the instrument in a location of the laboratory which is suitable for
operation, free of vibrations, protected from corrosive atmosphere, and
contamination by chemicals.
The instrument should be protected against excessive temperature fluctu-
ations and direct sunlight.
3.2 Mounting tubing
Two different types of tubings are available as inlet and outlet tubing,
both of which are included in the scope of delivery (see Chapter 10, page
27):
￭ PVC tubing (6.1801.120), 2 x 2 m
￭ PTFE tubing (6.1812.000), 1 x 4 m
The question of which of the two types of tubing you should use is pri-
marily dependent on the type of solvent utilized. PVC tubing is softer, and
therefore has the advantage of causing less noise during the pumping
procedure.
If your application should allow it, use PVC tubing at least for the mount-
ing of the outlet tubing (3-1), because it is from the valve (3-7) that most
loud pumping noises are likely to be generated.